Molybdenum plug grain refining device

Abstract

The utility model provides a molybdenum plug grain refinement device, which comprises a tray, the tray comprises a bearing surface, the molybdenum plug grain refinement device also comprises a plurality of positioning assemblies which are uniformly arranged on the bearing surface, and each positioning assembly comprises at least three positioning pieces which are uniformly arranged around a virtual axis at intervals, the positioning piece comprises a positioning end close to the virtual axis and a guide rod arranged on the side away from the positioning end, the bearing face is provided with a guide hole matched with the guide rod in a guiding mode, a certain supporting force is provided through the elastic piece, and therefore the problem that the molybdenum plug inclines laterally can be solved, and safety is improved.

Description

Technical Field

[0001] The utility model generally relates to the technical field of heat treatment, and in particular to a molybdenum plug grain refining device. Background Art

[0002] Molybdenum plug is a tool used to process seamless metal pipes. It is made of molybdenum-titanium-zirconium-carbon alloy. At present, in order to ensure the mechanical properties of molybdenum plug, the molybdenum plug is usually subjected to grain refinement treatment.

[0003] At present, the molybdenum plug is often tempered to achieve grain refinement. During tempering, the produced molybdenum plug is placed on a metal pallet, and then a forklift is used to place the pallet and the molybdenum plug together in a heating furnace. After the molybdenum plug is tempered, the pallet is moved out by a forklift. This method requires the assistance of a forklift. Since the molybdenum plug is columnar, usually cubic on the pallet, the molybdenum plug is prone to tipping over and falling when moved by a forklift, which is not conducive to safe production. Utility Model Content

[0004] In view of the above problems, the present application provides a molybdenum plug grain refining device, which is used to at least partially solve the technical problems existing in the prior art.

[0005] The utility model provides a molybdenum plug grain refinement device, comprising a tray, the tray comprising a bearing surface, and further comprising:

[0006] The positioning component includes a plurality of positioning members evenly distributed on the bearing surface, the positioning component includes at least three positioning members evenly spaced around a virtual axis, the positioning member includes a positioning end close to the virtual axis and a guide rod arranged on a side away from the positioning end, a guide hole is arranged on the bearing surface to cooperate with the guide rod, the guide hole is provided with a first limiting surface opposite to the positioning member, the guide rod is provided with a second limiting surface facing the first limiting surface away from the positioning member, an elastic member is arranged between the guide hole and the guide rod, the elastic member can provide the guide rod with an elastic force in the direction from the second limiting surface to the first limiting surface, and the axis of the guide rod is arranged along the radial direction of the virtual axis.

[0007] Specifically, by arranging a plurality of positioning assemblies on the bearing surface of the tray, when the molybdenum plug is heat-treated, the molybdenum plug is placed between at least three positioning members of the positioning assemblies, and the positioning segments of the positioning members are in contact with the outer peripheral surface of the columnar molybdenum plug for positioning, and a certain supporting force is provided by the elastic member, thereby reducing the problem of the lateral tilt of the molybdenum plug and improving safety. Moreover, by arranging the elastic member, the positioning member can provide elastic force in the radial direction, so that the positioning member can move in the radial direction, thereby being able to adapt to molybdenum plugs of various diameters and improving adaptability.

[0008] Furthermore, a support plate corresponding to at least three of the positioning members is arranged on the bearing surface, the guide hole is arranged on the support plate, and the elastic member is a compression spring arranged between the support plate and the positioning member.

[0009] Furthermore, the positioning member is a hemispherical structure, and the positioning end is the vertex of the hemispherical structure.

[0010] Specifically, by setting the positioning piece as a hemispherical structure, when the molybdenum plug is placed in the positioning assembly, the molybdenum plug can be guided by the spherical arc surface of the positioning piece, and during the placement of the molybdenum plug, the spherical arc surface can provide a radial thrust to the positioning piece, so that the positioning piece resists the elastic force of the elastic piece and expands outward, thereby automatically adapting to the size of the molybdenum plug and improving the convenience of use.

[0011] Furthermore, a limiting plate is integrally provided at one end of the guide rod located on the support plate away from the positioning member, the other end of the guide rod is detachably fixedly connected to the positioning member, and the second limiting surface is the plate surface of the limiting plate; specifically, through this setting method, it is convenient to assemble the guide rod and the guide hole.

[0012] Furthermore, the positioning assembly further comprises a circular connecting plate, the connecting plate is coaxially arranged with the virtual axis, and the connecting plate is detachably fixedly connected with the bearing surface, and the supporting plate is arranged on the connecting plate. Specifically, through this arrangement, each positioning assembly can be integrated on the connecting plate, which is convenient for installing the positioning assembly on the existing pallet, convenient for modifying the existing pallet, and convenient for replacing the positioning assembly when a positioning assembly fails.

[0013] Furthermore, a rigid heat-conducting tube is coaxially arranged on the positioning member and the guide rod, a piston is arranged inside the heat-conducting tube, an end cover is arranged at the end of the heat-conducting tube, a second guide hole which cooperates with the guide rod for guiding sliding sealing is arranged on the end cover, the guide rod is connected to the piston, a heat-conducting tube is filled with a heat-expanding flow medium between the piston and the end cover, and a heat-expanding sleeve is arranged on the inner circumferential surface of the guide hole.

[0014] Specifically, at room temperature, the diameter of the inner annular surface of the non-expansion sleeve is larger than the diameter of the guide hole. At this time, the guide rod can slide freely in the guide hole. After the molybdenum plug and the tray are placed in a heating furnace for heating, the heat expansion sleeve expands due to the heat, causing the diameter of the inner annular surface to become smaller, thereby clamping the outer peripheral surface of the guide rod. At this time, the guide rod and the guide hole are locked, and at the same time, the heat expansion flow medium expands due to the heat, pushing the piston to move so that the positioning piece retracts, and the positioning end is separated from the outer peripheral surface of the molybdenum plug. This arrangement can ensure that the molybdenum plug is evenly heated, thereby ensuring the grain refinement effect.

[0015] Furthermore, a second elastic member is provided between the piston and the heat-conducting cylinder, and the second elastic member can provide an elastic force to the piston in a direction from the piston to the end cover.

[0016] Furthermore, the second elastic member is a second compression spring disposed between an end of the heat-conducting tube away from the end cover and the piston.

[0017] Beneficial Effects

[0018] The utility model provides a molybdenum plug grain refining device, comprising a tray, the tray comprising a bearing surface, and further comprising: a positioning assembly, comprising a plurality of evenly distributed on the bearing surface, the positioning assembly comprising at least three positioning members evenly spaced around a virtual axis, the positioning member comprising a positioning end close to the virtual axis and a guide rod arranged on a side away from the positioning end, a guide hole matched with the guide rod is arranged on the bearing surface, the guide hole is provided with a first limiting surface opposite to the positioning member, and the guide rod is provided with a first limiting surface facing away from the positioning member on the side facing the first limiting surface. Two positioning surfaces, an elastic member is arranged between the guide hole and the guide rod, and the elastic member can provide the guide rod with an elastic force in the direction from the second limit surface to the first limit surface, and the axis of the guide rod is arranged along the radial direction of the virtual axis; by arranging a plurality of positioning components on the bearing surface of the tray, when the molybdenum plug is heat-treated, the molybdenum plug is placed between at least three positioning members of the positioning components, and the positioning segment of the positioning member is in contact with the outer peripheral surface of the columnar molybdenum plug for positioning, and a certain supporting force is provided by the elastic member, thereby reducing the problem of the lateral tilt of the molybdenum plug and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Other features, objects and advantages of the present application will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings.

[0020] Figure 1 The utility model provides a schematic diagram of the top view of the molybdenum plug grain refinement device.

[0021] Figure 2 for Figure 1 The utility model shows a schematic diagram of the partially enlarged structure of position A in a molybdenum plug grain refinement device provided by the present invention.

[0022] Figure 3 The utility model provides a partially enlarged structural schematic diagram of a positioning component in a molybdenum plug grain refinement device.

[0023] Figure 4 for Figure 3 The diagram shown is a schematic diagram of the local enlarged structure of position B in a molybdenum plug grain refinement device provided by the utility model.

[0024] Figure 5 for Figure 4 The figure shows a schematic diagram of the local enlarged structure of position C in a molybdenum plug grain refinement device provided by the utility model. DETAILED DESCRIPTION

[0025] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings.

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] Embodiment 1

[0028] The utility model provides a molybdenum plug grain refinement device, referring to Figure 1-Figure 3 As a specific embodiment, the device includes a tray 1, the tray includes a carrying surface 10, and also includes:

[0029] The positioning assembly 2 includes a plurality of positioning members 21 evenly distributed on the bearing surface 10, and the positioning assembly includes at least three positioning members 21 evenly spaced around a virtual axis. The positioning member 21 includes a positioning end 210 close to the virtual axis and a guide rod 211 arranged on a side away from the positioning end. A guide hole 212 is provided on the bearing surface 10 to guide and cooperate with the guide rod 211. The guide hole 212 is provided with a first limiting surface 2120 opposite to the positioning member. The guide rod 211 is provided with a second limiting surface 2110 facing the first limiting surface 2120 away from the positioning member. An elastic member 213 is provided between the guide hole 212 and the guide rod 211. The elastic member can provide the guide rod with an elastic force in the direction from the second limiting surface to the first limiting surface. The axis of the guide rod 211 is arranged along the radial direction of the virtual axis.

[0030] Specifically, a molybdenum plug grain refinement device provided in the present application can assist the molybdenum plug in heat treatment, specifically: by arranging multiple positioning assemblies 2 on the bearing surface 10 of the tray, when the molybdenum plug is heat treated, the molybdenum plug is placed between at least three positioning members 21 of the positioning assembly 2, and the positioning segment 210 of the positioning member is contacted with the outer peripheral surface of the columnar molybdenum plug for positioning, and a certain supporting force is provided by the elastic member 213, thereby reducing the problem of lateral tilt of the molybdenum plug and improving safety, and by arranging the elastic member 213, the positioning member can provide elastic force in the radial direction, so that the positioning member can move in the radial direction, thereby being able to adapt to molybdenum plugs of various diameters and improving adaptability.

[0031] Further, as a specific implementation method, refer to Figure 1-Figure 3 A support plate 22 corresponding to at least three positioning members 21 is provided on the bearing surface 10 , the guide hole 212 is provided on the support plate 22 , and the elastic member 213 is a compression spring provided between the support plate 22 and the positioning member 21 .

[0032] Further, as a preferred embodiment, the positioning member 21 is a hemispherical structure, and the positioning end 210 is the vertex of the hemispherical structure.

[0033] Specifically, by setting the positioning piece to a hemispherical structure, when the molybdenum plug is placed in the positioning assembly 2, the molybdenum plug can be guided by the spherical arc surface of the positioning piece, and during the placement of the molybdenum plug, the spherical arc surface can provide a radial thrust to the positioning piece, so that the positioning piece resists the elastic force of the elastic piece and expands outward, thereby automatically adapting to the size of the molybdenum plug and improving the convenience of use.

[0034] Furthermore, as a preferred embodiment, the guide rod 211 is integrally provided with a limiting plate 211a at one end of the support plate 22 away from the positioning member 21, and the other end of the guide rod is detachably fixedly connected to the positioning member 21, and the second limiting surface 2110 is the plate surface of the limiting plate 211a; specifically, through this setting method, it is convenient to assemble the guide rod and the guide hole.

[0035] Further, as a specific implementation, the positioning assembly 2 also includes a circular connecting plate 24, the connecting plate is coaxially arranged with the virtual axis, and the connecting plate is detachably fixedly connected to the bearing surface, and the support plate 22 is arranged on the connecting plate. Specifically, through this arrangement, each positioning assembly 2 can be integrated on the connecting plate, which is convenient for the positioning assembly to be installed on the existing pallet, convenient for the modification of the existing pallet, and convenient for the replacement of the positioning assembly when the positioning assembly fails, wherein the connecting plate and the support plate 2 are welded.

[0036] Embodiment 2

[0037] The utility model provides a molybdenum plug grain refinement device, as a further improvement, referring to Figure 4 , Figure 5 , which is different from the first embodiment in that a rigid heat-conducting tube 26 is coaxially arranged on the positioning member 21 with the guide rod, a piston 27 is arranged in the heat-conducting tube 26, an end cover 28 is arranged at the end of the heat-conducting tube, a second guide hole 281 which cooperates with the guide rod guide sliding seal is arranged on the end cover 28, the guide rod is connected to the piston, the heat-conducting tube is filled with a heat expansion flow medium between the piston and the end cover, and a heat expansion sleeve 20 is arranged on the inner circumferential surface of the guide hole.

[0038] Specifically, at room temperature, the diameter of the inner annular surface of the non-expansion sleeve is larger than the diameter of the guide hole 212. At this time, the guide rod 211 can slide freely in the guide hole 212. After the molybdenum plug and the tray are placed in a heating furnace for heating, the heat expansion sleeve 20 expands due to the heat, so that the diameter of the inner annular surface becomes smaller, and the outer peripheral surface of the guide rod is clamped. At this time, the guide rod and the guide hole are locked. At the same time, the heat expansion flow medium expands due to the heat, pushing the piston to move so that the positioning member 21 retracts, and the positioning end 210 is separated from the outer peripheral surface of the molybdenum plug. This arrangement can ensure that the molybdenum plug is evenly heated and the grain refinement effect is guaranteed.

[0039] Specifically, refer to Figure 5 The specific structure of the thermal expansion sleeve 20 is as follows: it includes a rigid heat-conducting ring body 201, the heat-conducting ring body 201 is limited by a limit spring 203, a mounting groove is coaxially arranged on the inner circumference of the heat-conducting ring body 201, and a ring-shaped elastic capsule 202 is arranged in the mounting groove. The elastic capsule 202 is made of fluororubber, which can withstand high temperatures above 300°C, and the tempering temperature of the molybdenum plug is between 150°C and 250°C, so it can meet the working requirements. The elastic capsule 202 is filled with a heat-expanding flow medium, and when the heat-expanding flow medium is heated and expanded, the elastic capsule can be expanded to reduce the inner diameter.

[0040] Further, as a specific implementation, a second elastic member 29 is provided between the piston 27 and the heat-conducting cylinder 26 , and the second elastic member can provide an elastic force from the piston to the end cover 28 to the piston 27 .

[0041] Further, as a specific implementation, the second elastic member 29 is a second compression spring disposed between the piston and an end of the heat-conducting tube away from the end cover.

[0042] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the utility model. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) by each other to form a technical solution.

Claims

1. A molybdenum plug grain refining device, comprising a tray (1), the tray comprising a bearing surface (10), characterized in that: Also includes: A positioning assembly (2) comprises a plurality of positioning members (21) evenly distributed on the bearing surface (10), the positioning assembly comprising at least three positioning members (21) evenly spaced around a virtual axis, the positioning member (21) comprising a positioning end (210) close to the virtual axis and a guide rod (211) arranged on a side away from the positioning end, a guide hole (212) for guiding and cooperating with the guide rod (211) is arranged on the bearing surface (10), the guide hole (212) is provided with a first limiting surface (2120) opposite to the positioning member, the guide rod (211) is provided with a second limiting surface (2110) facing the first limiting surface (2120) away from the positioning member, an elastic member (213) is arranged between the guide hole (212) and the guide rod (211), the elastic member can provide the guide rod with an elastic force in a direction from the second limiting surface to the first limiting surface, and the axis of the guide rod (211) is arranged along the radial direction of the virtual axis.

2. A molybdenum plug grain refinement device according to claim 1, characterized in that: A support plate (22) corresponding one-to-one to at least three positioning members (21) is provided on the bearing surface (10); the guide hole (212) is provided on the support plate (22); and the elastic member (213) is a compression spring provided between the support plate (22) and the positioning member (21).

3. A molybdenum plug grain refinement device according to claim 2, characterized in that: The positioning member (21) is a hemispherical structure, and the positioning end (210) is the vertex of the hemispherical structure.

4. A molybdenum plug grain refinement device according to claim 3, characterized in that: A limiting plate (211a) is integrally provided on one end of the guide rod (211) located away from the positioning member (21) and the supporting plate (22); the other end of the guide rod is detachably fixedly connected to the positioning member (21); and the second limiting surface (2110) is the plate surface of the limiting plate (211a).

5. A molybdenum plug grain refinement device according to claim 4, characterized in that: The positioning assembly (2) further comprises a circular connecting plate (24), the connecting plate being coaxially arranged with the virtual axis and being detachably fixedly connected to the bearing surface, and the supporting plate (22) being arranged on the connecting plate.

6. A molybdenum plug grain refinement device according to claim 2, characterized in that: A rigid heat-conducting tube (26) is coaxially arranged on the positioning member (21) and the guide rod, a piston (27) is arranged in the heat-conducting tube (26), an end cover (28) is arranged at the end of the heat-conducting tube, a second guide hole (281) is arranged on the end cover (28) and cooperates with the guide rod for guiding sliding sealing, the guide rod is connected to the piston, a heat-expanding fluid medium is filled in the heat-conducting tube between the piston and the end cover, and a heat-expanding sleeve (20) is arranged on the inner circumferential surface of the guide hole.

7. A molybdenum plug grain refinement device according to claim 6, characterized in that: A second elastic member (29) is provided between the piston (27) and the heat-conducting cylinder (26), and the second elastic member can provide an elastic force to the piston (27) in a direction from the piston to the end cover (28).

8. A molybdenum plug grain refining device according to claim 7, characterized in that: The second elastic member (29) is a second compression spring arranged between an end of the heat-conducting tube away from the end cover and the piston.

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