Spheroidal graphite alloy composite roller heat treatment device and preparation method thereof

Abstract

The invention relates to the field of spheroidal graphite alloy material heat treatment, and particularly discloses a spheroidal graphite alloy composite roller heat treatment device and a preparation method thereof.The spheroidal graphite alloy composite roller heat treatment device comprises an annealing furnace used for forming a sealed annealing cavity; the steel net rack is arranged in the annealing chamber and forms a plurality of accommodating chambers for placing spheroidal graphite alloy composite rollers to be subjected to annealing heat treatment; the elastic displacement assembly is used for bearing the steel net rack at a first supporting position when the annealing chamber is in the stop state and bearing the steel net rack at a second supporting position when the annealing chamber is in the annealing state; and when the position where the elastic displacement assembly bears the steel net rack is changed into a second position from a first position, the steel net rack is inclined, so that the spheroidal graphite alloy composite roller to be subjected to annealing heat treatment rolls in the containing cavity. The spheroidal graphite alloy composite roller has the effects that the spheroidal graphite alloy composite roller is heated uniformly, and the annealing heat treatment effect is better.

Description

Technical Field

[0001] The present application relates to the field of heat treatment of ductile iron alloy materials, and in particular to a heat treatment device for a ductile iron alloy composite roller and a preparation method thereof. Background Art

[0002] Ductile alloy needs to be annealed during heat treatment. After annealing, the quality of ductile alloy is better. Ductile alloy rods need to be annealed in an annealing furnace filled with nitrogen. Nitrogen is to protect the ductile alloy rods and prevent oxidation. Ductile alloy rods are usually placed in an annealing furnace using a rack. The rack holds multiple ductile alloy rods for simultaneous annealing. When the ductile alloy rod is placed on the rack in the annealing furnace, the ductile alloy rod is stationary in the annealing furnace, which easily leads to uneven contact between the ductile alloy rod and the high-temperature gas in the annealing furnace, resulting in uneven heating and poor annealing heat treatment effect. Summary of the invention

[0003] In order to improve the problem that the ductile iron alloy rods are in uneven contact with the high-temperature gas in the annealing furnace, resulting in uneven heating and poor annealing heat treatment effect, the present application provides a ductile iron alloy composite roller heat treatment device and a preparation method thereof.

[0004] The present application provides a ductile alloy composite roller heat treatment device and a preparation method thereof using the following technical solutions: A heat treatment device for ductile alloy composite rollers, comprising an annealing furnace for forming a sealed annealing chamber and a control door for controlling the annealing chamber to communicate with the external environment; the annealing furnace is used to heat the annealing chamber to an annealing state or cool it to a stop state; a steel grid is arranged in the annealing chamber and forms a plurality of accommodating chambers for placing ductile alloy composite rollers to be annealed and heat treated; an elastic displacement component is used to support the steel grid at a first supporting position when the annealing chamber is in the stop state and to support the steel grid at a second supporting position when the annealing chamber is in the annealing state; a temperature sensor is used to detect the temperature of the annealing chamber and to stop the annealing furnace from heating the annealing chamber when the temperature of the annealing chamber reaches a preset temperature; wherein the ductile alloy composite roller to be annealed and heat treated is inserted into the accommodating chamber and can roll in the accommodating chamber; When the position of the elastic displacement component supporting the steel grid changes from the first position to the second position, the steel grid tilts to allow the ductile alloy composite roller to be annealed and heat treated to roll in the accommodating chamber.

[0005] By adopting the above technical solution, multiple ductile alloy composite rollers can be inserted into the accommodating chamber, and each ductile alloy composite roller has a space for rolling, so that there are gaps between the multiple ductile alloy composite rollers, and the gaps are sufficient to allow the high-temperature gas in the annealing chamber to contact them, thereby improving the uniformity of the contact between the ductile alloy composite roller and the high-temperature gas, improving the heating effect during annealing, and making the ductile alloy composite roller evenly heated, thereby improving the heat treatment effect and improving the quality of the product.

[0006] By adopting the above technical scheme, the elastic displacement member supports the steel grid, and the elastic displacement member can tilt the steel grid when the annealing chamber changes from a stop state to an annealing state, so that the ductile alloy composite roller can roll in the accommodating chamber. Then, when the ductile alloy composite roller is heated in the annealing furnace, the ductile alloy composite roller is heated for a period of time, and then the steel grid tilts, and then the ductile alloy composite roller rotates in the accommodating chamber. Originally, part of the ductile alloy composite roller was in contact with the steel grid. After the ductile alloy composite roller is rotated, the part in contact with the steel grid becomes out of contact with the steel grid, so that the ductile alloy composite roller can be heated more evenly. To be precise, when the temperature inside the annealing furnace rises, the air in the annealing furnace is heated up first, and then the air and the steel grid are heat-transferred, and then the steel grid is heated up, so that there is a temperature difference between the air and the steel grid. When the air heats the ductile alloy composite roller, part of the ductile alloy composite roller contacts the steel grid, resulting in uneven heating. The present application utilizes the rotation of the ductile alloy composite roller on the steel grid to achieve uniform heating of the ductile alloy composite roller, improve the heat treatment effect, and improve product quality.

[0007] The present application mainly utilizes the change of the elastic displacement member to tilt the steel grid, and the change of the elastic displacement member is caused by the annealing of the annealing furnace, so that no external drive is required to move the steel grid. In actual use, since no external drive is required, the sealing of the annealing chamber can be better guaranteed, the heat storage of the annealing chamber can be better improved, and the annealing efficiency of the annealing furnace itself is improved.

[0008] Optionally, the elastic displacement component includes: a first connecting member, a second connecting member and an elastic telescopic member; the first connecting member is connected to the inner wall surface of the annealing chamber, and the second connecting member is connected to the steel grid; the elastic telescopic member is located between the first connecting member and the second connecting member; the elastic telescopic member can stretch after heating, and when the annealing chamber is in an annealing state, the elastic telescopic member stretches to increase the distance between the first connecting member and the second connecting member; the steel grid is hinged to the inner wall surface of the annealing chamber.

[0009] Optionally, the elastic telescopic member includes: an elastic spring body and a guide rod body; the guide rod body is fixed to the inner wall surface of the annealing chamber, and the elastic spring body is sleeved on the guide rod body; the first connecting piece is used to connect one end of the elastic spring body to the inner wall surface of the annealing chamber, and the second connecting piece is used to connect the other end of the elastic spring body to the steel grid; the elastic spring body is elastic and loses its elasticity under the action of high temperature; when the annealing chamber is in a stopped state, the elastic spring body has a first length; when the annealing chamber is in an annealing state, the elastic spring body has a second length; the first length and the second length are different; the elastic spring body is detachably connected to the first connecting piece and the second connecting piece.

[0010] Optionally, the elastic telescopic member includes: a liquid storage structure and a moving structure; the moving structure is connected to the second connecting member, and the liquid storage structure is connected to the first connecting member; the liquid storage structure is used to form a storage chamber for storing a preset liquid and an exhaust cavity connected to the storage chamber; the moving structure is used to form a closing portion that abuts and seals the exhaust cavity to seal the exhaust cavity; the closing portion is used to make the moving structure slidably connected to the exhaust cavity, and the moving structure can at least slide in the exhaust cavity to a first moving position and a second moving position; the liquid storage structure also forms a discharge port connected to the exhaust cavity; when the moving structure is located at the first moving position, the closing portion blocks the exhaust cavity; when the moving structure is located at the second moving position, the discharge port is connected to the annealing chamber through the exhaust cavity; when the annealing chamber is in a stopped state, the preset liquid is in a liquid state; when the annealing chamber is in an annealing state, the preset liquid is vaporized into a gas state.

[0011] Optionally, the extension direction of the exhaust cavity is at least partially upward; the second moving position is located above the first moving position; when the preset liquid is in a liquid state, the moving structure is located at the first moving position in the exhaust cavity or moves from the second moving position to the first moving position along the exhaust cavity.

[0012] Optionally, the liquid storage structure is further used to form a limiting portion in the exhaust cavity, and the limiting portion is used to limit the movable structure when the movable structure moves to the second movable position, so that the movable structure stops at the second movable position.

[0013] Optionally, a delayed exhaust component is provided in the storage chamber, and the delayed exhaust component is used to discharge gas into the storage chamber when the exhaust cavity stops exhausting gas outwards; the delayed exhaust component comprises: a fixed structure and a plug-in structure; the fixed structure is used to form a fixed chamber for storing the preset liquid and a connecting cavity for connecting the fixed chamber with the storage chamber; the plug-in structure is provided in the connecting cavity, and the plug-in structure can move relative to the connecting cavity; an air leakage cavity is also formed on the fixed structure, and after the liquid in the fixed cavity is vaporized, the plug-in structure is pushed outward to connect the air leakage cavity with the storage chamber; a thermal insulation wrapping layer is formed on the outside of the fixed structure, and the thermal insulation wrapping layer is used to delay the heating of the fixed chamber relative to the storage chamber.

[0014] Optionally, a thermal insulation wrapping layer is formed on the outside of the liquid storage structure, and the thermal insulation wrapping layer is used to delay the temperature rise of the storage chamber relative to the annealing chamber.

[0015] Optionally, a storage piece is arranged at the edge of the liquid storage structure, and the storage piece is used to form a storage chamber and a plurality of filter holes for connecting the storage chamber with the annealing chamber; a feed port connected to the storage chamber is formed on the storage chamber, and paper scraps are stored in the storage chamber.

[0016] Another object of the present application is to provide a method for preparing a ductile alloy composite roller using the above-mentioned ductile alloy composite roller heat treatment device, comprising the following steps: placing the ductile alloy roller into the accommodating chamber, and the annealing furnace heats the annealing chamber; the temperature sensor detects the temperature of the annealing chamber, and stops heating the annealing chamber when the annealing furnace switches from a stop state to an annealing state; after a period of time, the position of the elastic displacement component supporting the steel grid changes from a first position to a second position, and the steel grid is tilted so that the ductile alloy composite roller to be annealed and heat treated rolls in the accommodating chamber.

[0017] In summary, the present application includes at least one of the following beneficial technical effects: 1. When the annealing chamber is in the stopped state, the steel grid is supported at the first supporting position by means of an elastic displacement member, and when the annealing chamber is in the annealing state, the steel grid is supported at the second supporting position. When the supporting position of the steel grid is changed from the first position to the second position, the steel grid is tilted to allow the ductile alloy composite roller to be annealed and heat treated to roll in the accommodating chamber. There is no need to set a drive, and the properties of the elastic displacement member itself can be used to allow the ductile alloy composite roller to roll, so that the part originally in contact with the steel grid is transferred away, thereby ensuring that every position of the ductile alloy composite roller can contact the high-temperature gas in the annealing furnace, greatly improving the uniformity of heating. In addition, by utilizing the properties of the elastic displacement parts themselves, the sealing of the interior of the annealing furnace can be better ensured, avoiding the problems of poor sealing of the annealing furnace and high sealing costs caused by setting up a corresponding drive to drive the steel grid to move. Therefore, the present application not only improves the uniformity of heating of the ductile alloy composite rolling roller and improves the effect of heat treatment, but also saves the cost of the annealing furnace and better ensures the sealing of the annealing furnace, further saving costs and heat treatment effects.

[0018] 2. By utilizing the setting of the liquid storage structure and the mobile structure, after the water in the storage chamber evaporates, the pressure in the storage chamber increases significantly, which will push the mobile structure to move, so that the mobile structure drives the steel grid to move, thereby realizing the tilt of the steel grid. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is an overall schematic diagram according to an embodiment of the present application; Figure 2 It is a structural schematic diagram of a part of the embodiment, mainly showing a structure for controlling the door to open; Figure 3 It is a schematic structural diagram of a part of the embodiment, mainly showing the structure of the elastic spring body and some surrounding parts; Figure 4 It is a structural diagram of a part of the embodiment, mainly showing Figure 3 The structure in which the steel grid is in an inclined state when the elastic spring body is stretched until the elastic spring body loses its elasticity; Figure 5 It is a structural schematic diagram of a part of the embodiment, mainly showing the structure inside the annealing chamber; Figure 6 It is a structural diagram of a part of the embodiment, mainly showing Figure 5 The specific structure of the annealing chamber; Figure 7 It is a structural schematic diagram of a part of the embodiment, mainly showing the structure of the liquid storage structure, the mobile structure and the steel grid; Figure 8It is a structural schematic diagram of a part of the embodiment, mainly showing the structures of the liquid storage structure and the moving structure; Fig. 9 It is a structural schematic diagram of a part of the embodiment, mainly showing the structure of another embodiment of the liquid storage structure and the moving structure; Fig.10 It is a structural schematic diagram of a part of the embodiment, mainly showing the structure of the steel grid, the liquid storage structure, and the storage element; Fig.11 It is a structural schematic diagram of a part of the embodiment, mainly showing the exploded schematic structure of the liquid storage structure and the spatial position arrangement of the storage element, wherein the arrow represents the direction in which the water vapor is discharged from the discharge port; Fig.12 It is a structural schematic diagram of a part of the embodiment, mainly showing the Fig.11 structure; Fig.13 It is a structural schematic diagram of a part of the embodiment, mainly showing the internal structure of another embodiment of the annealing chamber; Fig.14 yes Fig.13 A magnified view of part A; Fig.15 It is a structural schematic diagram of a part of the embodiment, mainly showing the structure of the liquid storage structure, the raised cylindrical block, the annular groove and the annular block; Fig.16 It is a structural schematic diagram of a part of the embodiment, mainly showing the structure of the flexible membrane, the control chamber, the water storage chamber, the port and the pressure valve; Fig.17 It is a structural schematic diagram of a part of the embodiment, mainly showing the structure of the liquid storage structure, the fixing structure, the plug-in structure and the heat-insulating wrapping layer; Fig.18 It is a structural schematic diagram of a part of the embodiment, mainly showing the structure when the moving structure is pushed to the second position by water vapor, wherein the arrow represents the flow direction of the water vapor; Fig.19 It is a structural schematic diagram of a part of the embodiment, mainly showing the structure when the steel grid is located at the first supporting position; Fig. 20 It is a structural schematic diagram of a part of the embodiment, mainly showing the structure when the steel grid is located at the second supporting position.

[0020] Figure numerals: 1, annealing furnace; 11, annealing chamber; 2, control door; 3, steel grid; 31, accommodating chamber; 4, elastic telescopic member; 41 elastic spring body; 42, guide rod body; 43, liquid storage structure; 431, storage chamber; 432, exhaust cavity; 433, discharge port; 434, limiter; 435, through port; 436, pressure valve; 437, water storage chamber; 438, control chamber; 44, moving structure; 441, closing part; 45, fixed structure; 451, fixed chamber; 452, connecting cavity; 453, air release cavity; 46, plug-in structure; 47, raised cylindrical block; 471, annular groove; 48, annular block; 49, flexible membrane; 5, storage member; 51, filter hole; 52, feed port; 6, ductile alloy composite roller. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1-20 This application is described in further detail.

[0022] Example 1

[0023] A heat treatment device for a ductile alloy composite roller 6 comprises an annealing furnace 1, a control door 2, a steel grid 3, an elastic displacement component and a temperature sensor.

[0024] The annealing furnace 1 is a furnace body, and the annealing furnace 1 forms a sealed annealing chamber 11. The control door 2 is used to control the annealing chamber 11 to be connected to the external environment. The annealing furnace 1 can heat the annealing chamber 11 to an annealing state of 800°C or cool it down to a stop state of normal temperature. The annealing state is the state when the workpiece is annealed, and the stop state is the normal state when the workpiece is not annealed. The purpose of the annealing furnace 1 is to heat the ductile alloy composite roller 6 to be annealed to 800°C, and then cool it down after 1-2 hours to restore the ductile alloy composite roller 6 to be annealed to a state of normal temperature, thereby realizing the heat treatment of the annealing step of the ductile alloy composite roller 6 to be annealed. The ductile alloy composite roller 6 to be annealed after annealing will have better quality.

[0025] The steel grid 3 is arranged in the annealing chamber 11, and the steel grid 3 forms a plurality of accommodating chambers 31 for placing the ductile alloy composite roller 6 to be annealed and heat treated, wherein the steel grid 3 is a plurality of mesh plates formed by winding a rigid wire, and then the plurality of mesh plates are vertically connected and fixed to form a steel grid 3 with multiple layers of mesh plates, and each layer of steel mesh plates is wound with a wire, so that the wire separates each layer of steel mesh plates into a plurality of accommodating chambers 31. After the ductile alloy composite roller 6 to be annealed and heat treated is inserted into the accommodating chamber 31, the volume of the accommodating chamber 31 is greater than the volume of the ductile alloy composite roller 6 to be annealed and heat treated, and the ductile alloy composite roller 6 to be annealed and heat treated can roll in the accommodating chamber 31. Each ductile alloy composite roller 6 has a space for rolling, so that there are gaps between multiple ductile alloy composite rollers 6, and the gaps are sufficient to allow the high-temperature gas in the annealing chamber 11 to contact them, thereby improving the uniformity of the contact between the ductile alloy composite roller 6 and the high-temperature gas, improving the heating effect during annealing, and making the ductile alloy composite roller 6 evenly heated, thereby improving the heat treatment effect and improving the quality of the product.

[0026] The elastic displacement component is used to support the steel grid 3 at the first support position when the annealing chamber 11 is in a stopped state. The elastic displacement component is also used to support the steel grid 3 at the second support position when the annealing chamber 11 is in an annealing state. When the position where the elastic displacement component supports the steel grid 3 changes from the first position to the second position, the steel grid 3 tilts so that the ductile alloy composite roller 6 to be annealed and heat treated rolls in the accommodating chamber 31. Among them, the first support position refers to the state where the steel grid 3 is placed flat in the annealing chamber 11, and the second support position refers to the state where the steel grid 3 is placed obliquely in the annealing chamber 11. In this embodiment, the elastic displacement component is made of a material that will be melted at a high temperature of 800°C, such as aluminum, or the elastic displacement component is made of a material that will break at a high temperature of 800°C, such as ordinary hemp rope; when the elastic displacement component is made of aluminum, the aluminum is the rod body. One end of the elastic displacement member is connected to the top of the annealing chamber 11, and the other end is connected to the steel grid 3. Therefore, when the annealing chamber 11 is in the annealing state, the elastic displacement member will melt or break. One end of the steel grid 3 is connected to the annealing chamber 11, and the other end is connected to the elastic displacement member. If the elastic displacement member breaks, one end of the steel grid 3 will sink, thereby causing the steel grid 3 to tilt, and the ductile alloy composite roller 6 to be annealed and heat treated will roll in the accommodating chamber 31. When the temperature inside the annealing furnace 1 is increased, the air in the annealing furnace 1 is heated first, and then the air and the steel grid 3 are heat-transferred, and then the steel grid 3 is heated. As a result, there is a temperature difference between the air and the steel grid 3. When the air heats the ductile alloy composite roller 6, part of the ductile alloy composite roller 6 contacts the steel grid 3, resulting in uneven heating. The present application utilizes the rotation of the ductile alloy composite roller 6 on the steel grid 3 to achieve uniform heating of the ductile alloy composite roller 6, improve the heat treatment effect, and improve product quality.

[0027] The temperature sensor is used to detect the temperature of the annealing chamber 11, and when the temperature of the annealing chamber 11 reaches a preset temperature, the annealing furnace 1 stops heating the annealing chamber 11. The temperature sensor adopts the existing technology, and the annealing furnace 1 integrates a computer to heat the annealing chamber 11 and stop heating the annealing chamber 11 when the temperature reaches 800°C. The computer stops the annealing furnace 1 from continuing to heat the annealing chamber 11 when the temperature reaches 800°C. This is a common existing technology of the annealing furnace 1 and will not be elaborated in detail.

[0028] The solution provided in this embodiment mainly utilizes the change of melting or breaking of the elastic displacement member to tilt the steel grid 3, and the change of the elastic displacement member is caused by the annealing of the annealing furnace 1, so that no external drive is required to move the steel grid 3. If an external drive is used to provide power to the steel grid 3 to tilt the steel grid 3, a driving structure such as a motor, a cylinder, and a hydraulic cylinder must be used. However, this type of driving structure cannot be used in an environment where the annealing chamber 11 is at a high temperature of 800°C, so it needs to be set outside the annealing furnace 1. However, the power structure is set outside the annealing furnace 1. A corresponding transmission structure is required to connect the power structure with the steel grid 3, such as a rotating shaft or a push rod, and the transmission structure needs to penetrate the annealing furnace 1, which will increase the difficulty of sealing the annealing furnace 1. Since the steel grid 3 needs to be driven, the sealing effect of the annealing furnace 1 is far inferior to the sealing effect of the traditional annealing furnace 1. Since this solution does not require external drive, it can better ensure the sealing of the annealing chamber 11, thereby realizing the inclination of the steel grid 3 to increase the rolling of the ductile alloy composite roller 6 on the steel grid 3 and increase the heating uniformity of the ductile alloy composite roller 6. It can also ensure the sealing effect of the annealing furnace 1, better improve the heat storage of the annealing chamber 11, and improve the annealing efficiency of the annealing furnace 1 itself.

[0029] In addition, the annealing furnace 1 in this embodiment has the function of adding nitrogen, the purpose of which is to inject nitrogen into the annealing chamber 11 so that the nitrogen contacts the surface of the ductile alloy composite roller 6 to avoid oxidation caused by contact with oxygen. The annealing furnace 1 having the function of adding nitrogen is a common prior art and will not be elaborated in detail.

[0030] Example 2

[0031] The difference from Example 1 is that the elastic displacement component can be extended or shortened, so that the steel grid 3 is tilted in the annealing chamber 11.

[0032] The elastic displacement assembly includes: a first connecting member, a second connecting member and an elastic telescopic member 4. The first connecting member is connected to the inner wall surface of the annealing chamber 11, and the second connecting member is connected to the steel grid 3; the elastic telescopic member 4 is located between the first connecting member and the second connecting member. The elastic telescopic member 4 can be stretched after heating, and when the annealing chamber 11 is in the annealing state, the elastic telescopic member 4 stretches to increase the distance between the first connecting member and the second connecting member. The steel grid 3 is hinged to the inner wall surface of the annealing chamber 11. Thereby, after the elastic telescopic member 4 is stretched, the steel grid 3 is in a tilted state in the annealing chamber 11.

[0033] The first solution for the elastic displacement component is: The first connecting member is a block, and the first connecting member is fixed to the inner wall side of the annealing chamber 11. The second connecting member is a block, and the second connecting member is fixed to the steel grid 3. The first connecting member is provided with a first fixing ring, and the second connecting member is provided with a second fixing ring. The elastic telescopic member 4 is a rod body, and is a material that can be stretched at a high temperature of 800°C, so that the length of the elastic telescopic member 4 can be lengthened. Hooks are provided at both ends of the elastic telescopic member 4, which are hung on the first fixing ring and the second fixing ring. The elastic telescopic member 4 can be replaced each time it is used.

[0034] The second solution for the elastic displacement component is: The elastic telescopic member 4 includes: an elastic spring body 41 and a guide rod body 42. The guide rod body 42 is fixed to the inner wall surface of the annealing chamber 11, and the elastic spring body 41 is sleeved on the guide rod body 42. The elastic spring body 41 is elastic and loses its elasticity under the action of high temperature. The elastic spring body 41 is detachably connected to the first connecting member and the second connecting member. The specific elastic spring body 41 is a compression spring or a tension spring. When the elastic spring body 41 is a tension spring, the first connecting member is a block fixed to the inner wall surface of the annealing chamber 11, a first fixing ring is formed on the first connecting member, and one end of the tension spring is hooked on the first fixing ring, so that the first connecting member is used to connect one end of the elastic spring body 41 to the inner wall surface of the annealing chamber. The second connecting member is a block fixed to the steel grid 3, a second fixing ring is formed on the second connecting member, and the other end of the tension spring is hooked on the second fixing ring, so that the second connecting member is used to connect the other end of the elastic spring body 41 to the steel grid 3.

[0035] When the annealing chamber 11 is in a stopped state, the elastic spring body 41 has a first length; when the annealing chamber 11 is in an annealing state, the elastic spring body 41 has a second length. The first length and the second length are different. When the annealing chamber 11 is in a stopped state, the annealing chamber 11 is at room temperature, so that the tension spring is in a normal state, and the tension spring can normally bear the weight of the steel grid 3. When the annealing chamber 11 is in an annealing state, the tension spring loses its elasticity, so that when it bears the weight of the steel grid 3, the tension spring is straightened, or stretched to a state close to being straight, thereby causing the steel grid 3 to tilt.

[0036] When the elastic spring body 41 adopts a compression spring, the first connecting member, the second connecting member and the guide rod make the compression spring vertical, so that it is compressed to the limit when the annealing chamber 11 is in the annealing state, so that the length of the compression spring becomes shorter, which will cause the steel grid 3 to tilt. The principle is the same as that of the tension spring and will not be described in detail.

[0037] Example 3

[0038] The difference from Example 2 is that the elastic telescopic member 4 includes: a liquid storage structure 43 and a movable structure 44. The movable structure 44 is connected to the second connecting member, and the liquid storage structure 43 is connected to the first connecting member. The liquid storage structure 43 is a shell structure, and the liquid storage structure 43 is used to form a storage chamber 431 for storing a preset liquid and an exhaust cavity 432 connected to the storage chamber 431. The movable structure 44 is used to form a closing portion 441 that abuts and seals the exhaust cavity 432 to seal the exhaust cavity 432. Among them, the exhaust cavity 432 is a cavity with a circular cross-section, and the closing portion 441 is a metal material in contact with the exhaust cavity 432. In some other schemes, the closing portion 441 can also be a rigid block and high temperature resistant rubber, and the high temperature resistant rubber is wrapped around the outside of the rigid block to increase the sealing between the closing portion 441 and the exhaust cavity 432.

[0039] The closing portion 441 is used to make the movable structure 44 slidably connected with the exhaust cavity 432. The movable structure 44 is a rod structure, and the movable structure 44 can at least slide to a first movable position and a second movable position in the exhaust cavity 432. The second movable position is located above the first movable position. The liquid storage structure 43 also forms a discharge port 433 connected to the exhaust cavity 432, and the discharge port 433 is used to discharge the gas in the liquid storage chamber to the outside. When the movable structure 44 is located at the first movable position, the closing portion 441 is located below the discharge port 433, so that the closing portion 441 blocks the exhaust cavity 432 at this time. When the movable structure 44 is located at the second moving position, the closing portion 441 is located above the discharge port 433, and then below the closing portion 441, the exhaust chamber 432 is connected with the discharge port 433, so that the discharge port 433 is connected with the annealing chamber 11 through the exhaust chamber 432. At this time, the gas in the liquid storage chamber can be discharged into the annealing chamber 11 along the exhaust chamber 432 and the discharge port 433.

[0040] The liquid storage structure 43 is also used to form a limiting portion 434 in the exhaust cavity 432. The limiting portion 434 is used to limit the movable structure 44 when the movable structure 44 moves to the second movable position, so that the movable structure 44 stops at the second movable position. The limiting portion 434 is a block structure in this embodiment. Preferably, the limiting portion 434 is a protruding ring block formed on the inner wall surface of the exhaust cavity 432. The movable structure 44 is slidably connected with the protruding ring block. A protruding stopper is formed at one end of the movable structure 44 away from the steel grid 3. When the movable structure 44 moves to the second position, the protruding stopper abuts against the protruding ring block, thereby limiting the movable structure 44. Among them, the protruding ring block is arranged above the closed portion 441.

[0041] In addition, the preset liquid in this embodiment preferably uses distilled water, and when the annealing chamber 11 is in a stopped state, the preset liquid is in a liquid state. When the annealing chamber 11 is in an annealing state, the preset liquid vaporizes into a gas state. Among them, according to common sense, when water evaporates under standard atmospheric pressure, its volume will increase significantly. The density of water vapor is much lower than that of liquid water, so the volume of water vapor will be much larger. Therefore, when the preset liquid changes from a liquid state to a gas state, the pressure in the liquid storage chamber increases due to the increase in gas volume in the liquid storage chamber, pushing the closed portion 441 to move upward along the exhaust cavity 432, so that the moving structure 44 moves upward, and the moving structure 44 is connected to the steel grid 3 through the second connecting member, thereby pushing the steel grid 3 to move upward, so that the steel grid 3 has a horizontal state to change to an inclined state, and the ductile iron composite roller 6 in the accommodating chamber 31 of the steel grid 3 rotates, so that the ductile iron composite roller 6 is heated evenly, improving the effect of heat treatment.

[0042] In this solution, water can be added to the liquid storage chamber before each annealing to ensure that the steel grid 3 can be tilted and operate normally, and the addition of water will not cause damage to any parts. Compared with the above-mentioned embodiments, this solution has the lowest cost.

[0043] In some other embodiments, when the moving structure 44 is located at the first moving position, the steel grid 3 is tilted 3-10° clockwise, and when the moving structure 44 is located at the second moving position, the steel grid 3 is tilted 3-10° counterclockwise.

[0044] On the basis of the present embodiment, after all the preset liquids in the liquid storage chamber of the present scheme are changed from liquid state to gas state, the pressure of the liquid storage chamber increases, which will cause all the gas in the liquid storage chamber to be discharged outwardly. Theoretically, the movement stops at the same time as the sum of the thrust exerted by the gas in the liquid storage chamber on the closing part 441 and the friction between the closing part 441 and the exhaust chamber is equal to the sum of the weight of the moving structure 44 and the weight of the steel grid 3 and the corresponding workpiece. However, at this time, the discharge port 433 is connected to the exhaust cavity 432. Therefore, the gas in the liquid storage chamber continues to be discharged outwardly until the closing part 441 moves down to the point where the closing part 441 is located below the discharge port 433. Only then will a new balance appear to stop the moving structure 44 from moving. However, the closing part 441 moves down to below the discharge port 433, which will cause the moving structure 44 to move down. After the moving structure 44 moves down, the inclination angle of the steel grid 3 changes. For ease of description, the gas in the liquid storage chamber is discharged outwardly from most of the ports, the closing portion 441 is moved to below the discharge port 433, and when the closing portion 441 stops moving, the position of the movable structure 44 is defined as the third moving position. When the movable structure 44 is located at the third moving position, the steel grid 3 is tilted clockwise by 1-5°. This allows the steel grid 3 to rotate in one direction and then in the opposite direction, so that the ductile iron composite roller 6 in the accommodating chamber 31 on the steel grid 3 rolls in one direction to the end of the accommodating chamber 31, and then rolls in the opposite direction to the other end of the accommodating chamber 31, so that the ductile iron composite roller 6 can roll twice in the annealing chamber 11, thereby better ensuring the uniformity of the heating of the ductile iron composite roller 6 and improving the effect of the heat treatment.

[0045] In some other embodiments, the extension direction of the exhaust channel 432 is at least partially upward, and the extension direction of the exhaust channel 432 in this embodiment can be inclined upward. The second moving position is located above the first moving position; when the preset liquid is in a liquid state, the moving structure 44 is located at the first moving position in the exhaust channel 432 or moves from the second moving position to the first moving position along the exhaust channel 432. Through the description of the previous example, in this scheme, it is also possible to realize that the moving structure 44 moves up and then moves down, so that the steel grid 3 changes the inclination angle twice. Therefore, this scheme also has the effect of improving the uniformity of heating of the ductile alloy composite roller 6 and improving the effect of heat treatment.

[0046] Example 4

[0047] The difference from Example 3 is that a delayed exhaust member is provided in the storage chamber 431, and the delayed exhaust member is used to discharge the gas into the storage chamber 431 when the exhaust channel 432 stops exhausting the gas outward. As can be seen from Example 3, when the exhaust channel 432 stops exhausting the gas outward, the moving structure 44 causes the inclination state of the steel grid 3 to change twice, so that the ductile iron composite roller 6 can roll back and forth in the accommodating chamber 31, and the purpose is that the ductile iron composite roller 6 rolls once in the accommodating chamber 31, and after a period of time, rolls again in the opposite direction, which greatly improves the uniformity of heating of the ductile iron composite roller 6. In this embodiment, by using the setting of the delayed exhaust member, the inclination state of the steel grid 3 can be changed twice again after a period of time after the inclination state of the steel grid 3 changes twice, thereby further greatly improving the uniformity of heating of the ductile iron composite roller 6.

[0048] Since the boiling point of water is 100°C and the temperature of the annealing chamber 11 is 800°C, the water evaporates very quickly in an environment of 800°C, and the annealing time is generally 1-2 hours. In addition, since the amount of water should not be too much, it is avoided that the pressure of the annealing chamber 11 becomes too high after the water evaporates, which may cause danger. The time for water to completely evaporate in this environment is relatively short. Therefore, when the annealing is just carried out, the ductile alloy composite roller 6 is rolled twice, and the ductile alloy composite roller 6 is kept in one state for most of the annealing time. For this reason, the setting of the delayed exhaust part is used to change the tilt state of the steel grid 3 twice, thereby further greatly improving the uniformity of the heating of the ductile alloy composite roller 6.

[0049] In this embodiment, the delayed exhaust component includes: a fixed structure 45 and a plug-in structure 46; the fixed structure 45 is used to form a fixed chamber 451 for storing a preset liquid and a connecting cavity 452 for connecting the fixed chamber 451 with the storage chamber 431; the plug-in structure 46 is arranged in the connecting cavity 452, and the plug-in structure 46 can move relative to the connecting cavity 452; a venting cavity 453 is also formed on the fixed structure 45, and after the liquid in the fixed chamber 451 is vaporized, the plug-in structure 46 is pushed outward to connect the venting cavity 453 with the storage chamber 431; a heat-insulating wrapping layer is formed outside the fixed structure 45, and the heat-insulating wrapping layer is used to delay the temperature rise of the fixed chamber 451 relative to the storage chamber 431. Among them, the fixed structure 45 is a shell, and the plug-in structure 46 is a rod. The principles of the plug-in structure 46 and the fixed structure 45 are the same as those of the movable structure 44 and the liquid storage structure 43. The heat-insulating wrapping layer is a heat-insulating layer, and preferably a glass fiber blanket is used to wrap the fixed structure 45, which can make the evaporation time of water in the fixed structure 45 later than the evaporation time of water in the liquid storage structure 43, thereby playing a role of delayed control.

[0050] Example 5

[0051] The difference from Example 4 is that a heat-insulating wrapping layer is formed outside the liquid storage structure 43, and the heat-insulating wrapping layer is used to delay the temperature rise of the storage chamber 431 relative to the annealing chamber 11. The heat-insulating wrapping layer adopts the heat-insulating layer in Example 4, and its purpose is to achieve the delayed change of the tilt angle of the steel grid 3. Then, after annealing for a period of time, the steel grid 3 can be tilted, for example, after the annealing is halfway done, the steel grid 3 is tilted, thereby better improving the uniformity of the heating of the ductile alloy composite roller 6.

[0052] Example 6

[0053] The difference from Example 3 is that water fills the storage chamber 431 and part of the exhaust cavity 432; the water abuts against the closed part 441. The initial tilt state of the steel grid 3 is clockwise, and then the water evaporates, causing the moving structure 44 to move up, and the clockwise tilt angle of the steel grid 3 increases. After the water evaporates completely, the moving structure 44 moves down. Since the initial position of the closed part 441 is in contact with water and supported by water, after the water evaporates completely, the closed part 441 loses the support of water, which causes the closed part 441 to move down to the bottom. When the closed part 441 moves to the bottom, the state of the steel grid 3 is counterclockwise tilted, so the purpose of this embodiment is to achieve that the ductile alloy composite roller 6 only rolls once in the accommodating chamber 31.

[0054] The ductile alloy composite roller 6 only rolls once, so the width of the accommodating chamber 31 can be set to control the rolling angle of the ductile alloy composite roller 6, so that the part originally in contact with the steel grid 3 is completely in contact with the annealing chamber 11. In another environment, it can also improve the uniformity of heating of the ductile alloy composite roller 6.

[0055] In the present embodiment, since water is filled in the exhaust chamber 432 and the sealing portion 441 is in contact with water, it is ensured that there is no gas in the storage chamber 431 and the exhaust chamber 432. Then, after the water evaporates, the gas in the annealing chamber 11 is only some more water vapor. At this time, the gas in the annealing chamber 11 is a mixture of nitrogen and water vapor. Nitrogen will not affect the quality of annealing, and water vapor will not affect the quality of annealing, thereby avoiding the presence of air in the storage chamber 431, the presence of oxygen in the air, and the contact of oxygen with the ductile alloy composite roller 6, resulting in oxidation of the ductile alloy composite roller 6, thereby better ensuring the quality of annealing.

[0056] In other schemes, the water is similarly filled in the exhaust chamber 432 and the closing portion 441 is in contact with the water, but the initial state of the steel grid 3 is counterclockwise tilted, so that after the water in the storage chamber 431 evaporates, the movable structure 44 moves upward, pushing the steel grid 3 to move, so that the steel grid 3 becomes clockwise tilted, achieving one rolling of the ductile alloy composite roller 6, and then after the water completely evaporates, the closing portion 441 will move down to the bottom, causing the steel grid 3 to return to the counterclockwise tilt, thereby also being able to achieve two rollings of the ductile alloy composite roller 6.

[0057] Example 7

[0058] The difference from Example 6 is that the second connecting member is a bolt used to fix the moving structure 44 and the steel grid 3 together, and the first connecting member is a structure used to fix the liquid storage structure 43 and the bottom surface of the annealing chamber 11. Among them, the first connecting member is a raised cylindrical block 47 fixedly arranged on the bottom surface of the annealing chamber 11, and the outer side of the raised cylindrical block 47 is provided with a thread, and the bottom of the liquid storage structure 43 is open, so that the liquid storage structure 43 and the first connecting member are detachably connected by threaded matching. The exhaust chamber 432 is formed in the middle of the liquid storage structure 43, and a plurality of annular grooves 471 are formed on the first connecting member. The annular groove 471 is used to place an annular block 48. The annular block 48 is embedded in the annular groove 471, and then the liquid storage structure 43 is fixed together with the first connecting member. At this time, the lower end of the annular block 48 is pressed against the annular groove 471, and the upper end of the annular block 48 is pressed against the top surface of the storage chamber 431, so that the annular block 48 forms a chamber in the storage chamber 431, and the center of the annular groove 471 matches the center of the exhaust chamber 432, so that the chamber in the annular block 48 is connected to the exhaust chamber 432. The multiple annular grooves 471 formed on the first connecting member have different sizes and are used to place annular blocks 48 of different diameters in the annular grooves 471, so that the annular blocks 48 can form multiple chambers of different sizes in the storage chamber 431 by replacing the annular blocks 48, so that different amounts of water can be placed in the annular blocks 48 by replacing the annular blocks 48, so that the closed portion 441 is in contact with the water surface, and different contents of water can be stored in the storage chamber 431, so that the change in water content can be used to shorten or extend the time interval between the two tilting angles of the steel grid 3. The purpose is to increase the time interval between the two tilting angles of the steel grid 3 when annealing the large-sized ductile alloy composite roller 6, and to reduce the time interval between the two tilting angles of the steel grid 3 for the small-sized ductile alloy composite roller 6.

[0059] In other schemes, the annular block 48 is replaced by a flexible membrane 49 of high temperature resistant rubber, wherein the flexible membrane 49 divides the storage chamber 431 into a water storage chamber 437 connected to the exhaust cavity 432, and a control chamber 438 in contact with the inner wall surface of the storage chamber 431. A through port 435 is provided on the liquid storage structure 43, and a pressure valve 436 is arranged in the through port 435. When water is poured into the control chamber 438, as more or less water is poured into the control chamber 438, the water storage chamber 437 becomes smaller or larger, thereby realizing the control of the size of the water storage chamber 437. In addition, the pressure valve 436 is used to prevent the water in the control chamber 438 from overflowing, but when the pressure in the control chamber 438 is large enough, the water or water vapor in the control chamber 438 can overflow. Before the annealing chamber 11 is in the annealing state, the size of the water outlet chamber can be changed by injecting water into the control chamber 438, so that the water content in the water storage chamber 437 is controlled. After being in the annealing state, since the water in the control chamber 438 can be discharged to the outside through the port 435 through the pressure relief valve, and will not be discharged into the exhaust chamber 432, the time interval between two tilt angles of the steel grid 3 can be shortened or extended.

[0060] Example 8

[0061] On the basis of the above-mentioned embodiment, a storage part 5 is provided at the edge of the liquid storage structure 43, and the storage part 5 is used to form a storage chamber and a plurality of filter holes 51 for connecting the storage chamber with the annealing chamber 11. A feed port 52 connected to the storage chamber is formed on the storage chamber, and paper scraps are stored in the storage chamber. The storage part 5 adopts a cylindrical mesh tube, and the paper scraps are materials with a combustion point lower than 800°. Therefore, in actual use, if there is oxygen in the storage chamber 431 or the annealing chamber 11, the oxygen can be consumed by burning the paper scraps, thereby preventing oxygen from affecting the annealing quality of the ductile alloy composite roller 6.

[0062] Example 9

[0063] A method for preparing a ductile alloy composite roller 6 using the ductile alloy composite roller 6 heat treatment device in the above-mentioned embodiment is provided, comprising the following steps: placing the ductile alloy roller into the accommodating chamber 31, and the annealing furnace 1 heats the annealing chamber 11; the temperature sensor detects the temperature of the annealing chamber 11, and stops heating the annealing chamber 11 when the annealing furnace 1 switches from a stop state to an annealing state; after a period of time, the position of the steel grid 3 supported by the elastic displacement component changes from a first position to a second position, and the steel grid 3 is tilted so that the ductile alloy composite roller 6 to be annealed and heat treated rolls in the accommodating chamber 31.

[0064] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A ductile alloy composite roller heat treatment device, characterized in that: include: An annealing furnace, used to form a sealed annealing chamber and a control door for controlling the annealing chamber to communicate with the external environment; The annealing furnace is used to raise the temperature of the annealing chamber to an annealing state or lower the temperature to a stop state; A steel grid frame is arranged in the annealing chamber and forms a plurality of accommodating chambers for placing the ductile alloy composite rolls to be annealed and heat treated; An elastic displacement assembly, used to support the steel grid at a first supporting position when the annealing chamber is in the stopped state and to support the steel grid at a second supporting position when the annealing chamber is in the annealing state; A temperature sensor is used to detect the temperature of the annealing chamber, and when the temperature of the annealing chamber reaches a preset temperature, the annealing furnace stops heating the annealing chamber; Wherein, the ductile alloy composite roller to be annealed and heat-treated is inserted into the accommodating chamber and can roll in the accommodating chamber; When the position of the elastic displacement component supporting the steel grid changes from the first position to the second position, the steel grid tilts to allow the ductile alloy composite roller to be annealed and heat treated to roll in the accommodating chamber.

2. A ductile alloy composite roller heat treatment device according to claim 1, characterized in that: The elastic displacement assembly comprises: a first connecting member, a second connecting member and an elastic telescopic member; The first connecting member is connected to the inner wall surface of the annealing chamber, and the second connecting member is connected to the steel grid; the elastic telescopic member is located between the first connecting member and the second connecting member; The elastic expansion member can be extended after heating, and when the annealing chamber is in an annealing state, the elastic expansion member is extended so that the distance between the first connecting member and the second connecting member increases; The steel grid is hinged to the inner wall surface of the annealing chamber.

3. A ductile alloy composite roller heat treatment device according to claim 2, characterized in that: The elastic telescopic member comprises: an elastic spring body and a guide rod body; the guide rod body is fixed to the inner wall surface of the annealing chamber, and the elastic spring body is sleeved on the guide rod body; The first connecting piece is used to connect one end of the elastic spring body to the inner wall surface of the annealing chamber, and the second connecting piece is used to connect the other end of the elastic spring body to the steel grid; The elastic spring body is elastic and loses its elasticity under high temperature; When the annealing chamber is in a stopped state, the elastic spring body has a first length; when the annealing chamber is in an annealing state, the elastic spring body has a second length; the first length and the second length are different; The elastic spring body is detachably connected to the first connecting member and the second connecting member.

4. A ductile alloy composite roller heat treatment device according to claim 2, characterized in that: The elastic telescopic member comprises: a liquid storage structure and a moving structure; the moving structure is connected to the second connecting member, and the liquid storage structure is connected to the first connecting member; The liquid storage structure is used to form a storage chamber for storing a preset liquid and an exhaust cavity communicated with the storage chamber; The movable structure is used to form a sealing portion that abuts against and seals the exhaust cavity, so as to seal the exhaust cavity; The sealing portion is used to make the movable structure slidably connected to the exhaust cavity, and the movable structure can at least slide in the exhaust cavity to a first movable position and a second movable position; The liquid storage structure also forms a discharge port communicating with the exhaust cavity; When the movable structure is located at the first movable position, the sealing portion blocks the exhaust cavity; When the moving structure is located at the second moving position, the exhaust port is connected to the annealing chamber through the exhaust channel; When the annealing chamber is in a stopped state, the preset liquid is in a liquid state; when the annealing chamber is in an annealing state, the preset liquid is vaporized into a gas state.

5. A ductile alloy composite roller heat treatment device according to claim 4, characterized in that: The exhaust cavity extends at least partially upward; the second moving position is located above the first moving position; When the preset liquid is in a liquid state, the moving structure is located at a first moving position in the exhaust cavity or moves from the second moving position to the first moving position along the exhaust cavity.

6. A ductile alloy composite roller heat treatment device according to claim 4, characterized in that: The liquid storage structure is further used to form a limiting portion in the exhaust cavity, and the limiting portion is used to limit the movable structure when the movable structure moves to the second movable position, so that the movable structure stops at the second movable position.

7. A ductile alloy composite roller heat treatment device according to claim 4, characterized in that: A delayed exhaust component is provided in the storage chamber, and the delayed exhaust component is used to exhaust the gas into the storage chamber when the exhaust channel stops exhausting the gas outward; The delayed exhaust component comprises: a fixing structure and a plug-in structure; The fixed structure is used to form a fixed chamber for storing the preset liquid and a connecting cavity for connecting the fixed chamber with the storage chamber; the plug-in structure is arranged in the connecting cavity, and the plug-in structure can move relative to the connecting cavity; The fixed structure is also formed with an air leakage channel, and after the liquid in the fixed chamber is gasified, the plug-in structure is pushed outwards to make the air leakage channel communicate with the storage chamber; A heat-insulating wrapping layer is formed outside the fixed structure, and the heat-insulating wrapping layer is used to delay the temperature rise of the fixed chamber relative to the storage chamber.

8. The heat treatment device for a ductile alloy composite roller according to claim 7, characterized in that: A heat-insulating wrapping layer is formed outside the liquid storage structure, and the heat-insulating wrapping layer is used to delay the temperature rise of the storage chamber relative to the annealing chamber.

9. A ductile alloy composite roller heat treatment device according to any one of claims 1 to 8, characterized in that: A storage member is arranged at the edge of the liquid storage structure, and the storage member is used to form a storage chamber and a plurality of filtering holes for connecting the storage chamber with the annealing chamber; A feeding port communicated with the storage chamber is formed on the storage chamber, and paper scraps are stored in the storage chamber.

10. A method for preparing a spheroidal graphite alloy composite roll using the spheroidal graphite alloy composite roll heat treatment device according to any one of claims 1 to 9, characterized in that: The following steps are involved: The ductile iron alloy roll is placed in the containing chamber, and the annealing furnace heats up the annealing chamber; The temperature sensor detects the temperature of the annealing chamber and stops heating the annealing chamber when the annealing furnace switches from the stop state to the annealing state; After a period of time, the position of the elastic displacement component supporting the steel grid changes from the first position to the second position, and the steel grid is tilted to allow the ductile alloy composite roller to be annealed and heat treated to roll in the accommodating chamber.

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