A tungsten-molybdenum alloy forming device

Abstract

The present invention discloses a tungsten-molybdenum alloy forming device, which specifically relates to the technical field of powder metallurgy, including a lower die and an upper die, the lower die and the upper die are arranged to move relative to each other, a cavity is arranged in the lower die, a pressing head is arranged at the position of the upper die corresponding to the cavity, an inclined core rod is arranged inside the cavity, a guide rod is arranged inside the upper die, a top pressing assembly is arranged in the area below the inclined core rod at the bottom side of the cavity corresponding to the area below the inclined core rod, the top pressing assembly includes a movable column, a pressure chamber is arranged inside the top of the movable column, and an elastic metal plate is fixedly installed on the top of the pressure chamber. In the present invention, during the pressing process, the elastic metal plate can first be concave downward to increase the tungsten-molybdenum alloy powder in the area below the inclined core rod, and then the elastic metal plate can be controlled to convex to increase the pressure of the tungsten-molybdenum alloy powder in the area below the inclined core rod, so as to balance the pressure of the tungsten-molybdenum alloy powder in the upper and lower areas of the inclined core rod, and improve the uniformity of the pressure of the tungsten-molybdenum alloy powder in the upper and lower areas of the inclined core rod.

Description

Technical Field

[0001] The present invention relates to the technical field of powder metallurgy, and more particularly to a tungsten-molybdenum alloy forming device. Background Art

[0002] Tungsten-molybdenum alloy parts are alloys composed of tungsten and molybdenum. They are typically formed using powder metallurgy sintering. This involves placing tungsten and molybdenum metal powders in a mold, applying pressure to the powders, and then sintering them to form a tungsten-molybdenum alloy product with high hardness, high wear resistance, and difficulty in machining. Tungsten-molybdenum alloys offer a variety of advantages, including their high melting point, high thermal stability, excellent corrosion resistance, and good mechanical properties. These advantages have led to their widespread application in many high-tech fields, resulting in an increasing variety and variety of tungsten-molybdenum alloy parts.

[0003] Due to the high hardness of tungsten-molybdenum alloy parts, modern advanced processing methods are usually required to achieve them, such as wire cutting, electric spark and other processing methods. Therefore, the hole-like structures on the structural parts are preferably directly formed during powder pressing, which reduces the subsequent processing steps of the formed workpiece and reduces costs.

[0004] However, in some structural parts, for example, products with a cylindrical shape and an inclined hole inside (there is a certain angle between the axis of the hole and the axis of the workpiece itself), the existing technology will set an inclined core rod corresponding to the inclined hole in the mold. During molding, a certain amount of cemented carbide powder is added to the lower mold, and the press applies pressure to press the compact, so that the corresponding inclined hole structure can be directly formed on the workpiece, without the need for subsequent drilling processing using machine tools, thereby improving the processing efficiency of the product and reducing the processing cost.

[0005] However, for some inclined hole structures with larger inclination angles, the corresponding inclination angle between the core rod and the axis of the workpiece is also larger, and the angle between the core rod and the bottom plane of the formed workpiece is smaller. The projected area of ​​the core rod in the pressing direction of the tungsten-molybdenum alloy powder is larger, that is, the core rod blocks the tungsten-molybdenum alloy powder in the area below it to a greater extent. During actual forming and pressing, the tungsten-molybdenum alloy powder in the cavity is pressed downward by driving the upper mold down, but the core rod will block the above-mentioned vertical pressure. Therefore, the pressure of the tungsten-molybdenum alloy powder in the area below the core rod will be smaller than that of the tungsten-molybdenum alloy powder in the area above it, that is, the pressure of the tungsten-molybdenum alloy powder in the upper and lower areas of the core rod is uneven, and the powder bonding strength in the area below the core rod during the forming process is not high, which leads to uneven overall texture of the workpiece, low quality, and increased defective rate. Summary of the Invention

[0006] The present invention provides a tungsten-molybdenum alloy forming device to solve the problem that when a mold with an inclined core rod is used for forming and pressing, the core rod will block the vertical pressure. As a result, the pressure of the tungsten-molybdenum alloy powder in the area below the core rod will be lower than that of the tungsten-molybdenum alloy powder in the area above it, resulting in uneven texture and low quality of the workpiece as a whole.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: a tungsten-molybdenum alloy forming device, comprising a lower die and an upper die, the lower die and the upper die being arranged to move relative to each other, a cavity being provided in the lower die, a pressing head being provided at a position of the upper die corresponding to the cavity, an inclined core rod being provided inside the cavity, a guide rod being provided inside the upper die, and a top end of the inclined core rod being butted against the guide rod;

[0008] A top pressure assembly is provided in the area below the inclined core rod corresponding to the bottom side of the cavity. The top pressure assembly includes a movable column. The top of the movable column is provided corresponding to the bottom wall of the cavity. A pressure chamber is provided inside the top of the movable column. An elastic metal plate is fixedly installed on the top of the pressure chamber. The pressure chamber is connected to a first pressure channel. The first pressure channel is connected to the convex-concave hydraulic control unit through a first butt joint pipe.

[0009] The convex-concave hydraulic control unit is used to increase the pressure in the pressure chamber to cause the elastic metal plate to deform upward or to reduce the pressure in the pressure chamber to cause the elastic metal plate to deform downward.

[0010] In a preferred embodiment, the lower die is fixedly mounted on the machine base, the upper die is slidably mounted above the lower die via a guide rail structure, a pressure unit is provided on the machine base, and the upper die is fixedly mounted on the output end of the pressure unit.

[0011] In a preferred embodiment, the tilted core rod is slidably installed in the lower mold, a telescopic movable driver is fixedly installed in the machine base, the tilted core rod is fixedly installed on the output end of the telescopic movable driver, the guide rod passes through the upper mold and the pressing head, and is slidably installed in the upper mold, and the top of the guide rod is provided with a limiting structure for mutual limitation with the upper mold.

[0012] In a preferred embodiment, the butt joint between the inclined core rod and the guide rod is arranged corresponding to the top forming surface of the formed part, a positioning pin structure is arranged between the top end of the inclined core rod and the bottom end of the guide rod, and an elastic member is arranged between the guide rod and the upper mold, which is used to provide downward elastic force to the guide rod.

[0013] In a preferred embodiment, a flattening member is provided in the pressure chamber, a piston chamber is provided below the pressure chamber, the bottom end of the flattening member is fixedly connected to a piston member, the piston member is slidably installed in the piston chamber, the piston chamber is connected to a second pressure channel, and the second pressure channel is connected to a flattening hydraulic control unit through a second docking pipe. The flattening hydraulic control unit controls the lifting and lowering of the flattening member by controlling the liquid pressure in the piston chamber.

[0014] In a preferred embodiment, the first pressure channel and the second pressure channel are both formed inside the movable column, the first butt joint pipe and the second butt joint pipe are both arranged on the outside of the bottom end of the movable column, the convex and concave hydraulic control unit and the flattening hydraulic control unit both include a hydraulic oil pump structure, and the first butt joint pipe and the second butt joint pipe are respectively connected to the corresponding oil pump structure through hydraulic pipes.

[0015] In a preferred embodiment, the movable column is slidably arranged in the lower mold, and the movable column passes through the structure of the bottom area of ​​the cavity corresponding to the lower mold, and slides with the lower mold. A lifting and moving drive is installed in the machine base, and the movable column is fixedly connected to the output end of the lifting and moving drive.

[0016] In a preferred embodiment, a storage groove is provided in the lower mold, an inclined core rod is provided through the storage groove, the storage groove is inclinedly provided in the lower mold, and the storage groove extends to one side wall of the lower mold and forms an opening, and solid lubricant is stored in the storage groove.

[0017] In a preferred embodiment, a flow channel is provided inside the inclined core rod, and a fourth butt joint pipe and a third butt joint pipe are provided at one end of the inclined core rod close to the telescopic movable driver. The flow channel is U-shaped and distributed in the flow channel along the length direction of the inclined core rod. The fourth butt joint pipe and the third butt joint pipe are respectively connected to the two ends of the flow channel. The third butt joint pipe is connected to a cold source providing unit, which includes a cold source pump, and the cold source pump is connected to a low-temperature fluid through a pipeline. The fourth butt joint pipe is connected to a heat source providing unit, which includes a heat source pump, and the heat source pump is connected to a high-temperature fluid through a pipeline. The solid lubricant in the storage tank is a hot melt material.

[0018] In a preferred embodiment, a plurality of impact balls are provided in the flow channel, and a plurality of protrusion structures are provided on the inner wall of the flow channel.

[0019] The beneficial effect of the present invention is that: during the pressing process, the present invention controls the pressure in the pressure chamber through the convex-concave hydraulic control unit, so that the elastic metal plate can first be concave downward to increase the tungsten-molybdenum alloy powder in the area below the inclined core rod, and then the elastic metal plate is controlled to convex upward to increase the pressure of the tungsten-molybdenum alloy powder in the area below the inclined core rod, thereby balancing the compressive pressure of the tungsten-molybdenum alloy powder in the upper and lower areas of the inclined core rod, improving the uniformity of the compressive pressure of the tungsten-molybdenum alloy powder in the upper and lower areas of the inclined core rod, and then improving the structural strength of the material near the inclined hole of the guide rod that is finally pressed and formed, thereby improving the quality of the formed part. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the filler state of the present invention.

[0022] Figure 3 It is a schematic diagram of the pressing state of the present invention.

[0023] Figure 4 Schematic diagram of the blanking state of the molded part of the present invention.

[0024] Figure 5 This is a diagram showing the state of the elastic metal plate in the top pressure assembly of the present invention when it bulges upward.

[0025] Figure 6 This is a diagram of the concave state of the elastic metal plate in the top pressure assembly of the present invention.

[0026] Figure 7 This is a diagram showing the state in which the flattening member of the present invention flattens the elastic metal plate.

[0027] Figure 8 Schematic diagram of the movement direction of the tilted core rod of the present invention.

[0028] Figure 9 This is a schematic diagram of the improved tilting core rod of the present invention in use.

[0029] Figure 10 This is a schematic diagram of the overall structure of the improved inclined core rod of the present invention.

[0030] Figure 11 For the present invention Figure 10 A magnified view of the structure of part A.

[0031] The figures are marked as follows: 1. lower mold; 11. mold cavity; 12. storage tank; 2. upper mold; 21. pressing head; 3. machine base; 31. pressure unit; 32. telescopic movable drive; 33. lifting movable drive; 4. tilting core rod; 41. flow channel; 42. third butt joint tube; 43. fourth butt joint tube; 44. impact ball; 45. protruding structure; 5. guide rod; 6. top pressure assembly; 61. movable column; 62. pressure chamber; 621. first pressure channel; 622. first butt joint tube; 63. elastic metal plate; 64. flattening member; 641. piston member; 65. piston chamber; 651. second pressure channel; 652. second butt joint tube; 7. molded part. DETAILED DESCRIPTION

[0032] The present application is described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0033] Refer to the instruction manual Figures 1 to 11, a tungsten-molybdenum alloy forming device, comprising a lower die 1 and an upper die 2, the lower die 1 and the upper die 2 are arranged to move relative to each other, a cavity 11 is provided in the lower die 1, a pressing head 21 is provided at a position of the upper die 2 corresponding to the cavity 11, an inclined core rod 4 is provided inside the cavity 11, a guide rod 5 is provided inside the upper die 2, the inclined core rod 4 is detachably mounted on the lower die 1, the guide rod 5 is movably mounted on the upper die 2, the top end of the inclined core rod 4 is docked with the guide rod 5, and the docking surface between the inclined core rod 4 and the guide rod 5 corresponds to the top molding surface of the molding 7, wherein the inclined core rod 4 is a cylindrical structure, and the corresponding top molding surface of the molding 7 forms an elliptical surface relatively. Therefore, in order to achieve complete docking between the inclined core rod 4 and the guide rod 5, the cross section of the guide rod 5 corresponds to the above-mentioned elliptical surface, that is, the guide rod 5 is an elliptical cylinder structure;

[0034] A top-pressing assembly 6 is provided in the area below the inclined core rod 4 on the bottom side of the cavity 11. The top-pressing assembly 6 includes a movable column 61. The top of the movable column 61 is provided corresponding to the bottom wall of the cavity 11. A pressure chamber 62 is provided inside the top of the movable column 61. An elastic metal plate 63 is fixedly installed on the top of the pressure chamber 62. The elastic metal plate 63 is fixedly connected to the movable column 61, and a seal is provided between the elastic metal plate 63 and the pressure chamber 62. A first pressure channel 621 is provided inside the movable column 61. The pressure chamber 62 is communicated with the first pressure channel 621. The first pressure channel 621 is connected to a convex-concave hydraulic control unit through a first butt joint 622. The convex-concave hydraulic control unit is used to control the liquid pressure in the pressure chamber 62.

[0035] When using, refer to the instructions attached. Figure 2 , first make the inclined core rod 4 be located in the mold cavity 11, then dock the guide rod 5 with the inclined core rod 4, so that the guide rod 5 is also located in the mold cavity 11, and then the tungsten-molybdenum alloy powder material can be put into the mold cavity 11 (it can be put in manually, or other structures can be designed for automatic putting, which will not be explained in detail in this embodiment), so that the tungsten-molybdenum alloy powder material fills the mold cavity 11. At this time, the guide rod 5 in the mold cavity 11 can prevent the tungsten-molybdenum alloy powder material from being squeezed at the top of the inclined core rod 4 and affecting the pressing quality, and then drive the upper mold 2 to move toward the lower mold 1, so that the pressing head 21 gradually enters the mold cavity 11 along the guide rod 5 to squeeze the tungsten-molybdenum alloy powder. During the pressing process, the movable column 61 is always located at the bottom of the mold cavity 11 and moves. During this process, the pressure in the pressure chamber 62 can be controlled by the convex-concave hydraulic control unit. For example, refer to the attached manual of the manual. Figure 5 , increase the pressure in the pressure chamber 62 by the convex-concave hydraulic control unit to deform the elastic metal plate 63 upward to form a bulge, or refer to the attached manual Figure 6, the pressure in the pressure chamber 62 is reduced by the convex-concave hydraulic control unit, so that the elastic metal plate 63 is deformed downward to form a concave, and then in the process of the pressing head 21 gradually applying pressure to the tungsten-molybdenum alloy powder, the elastic metal plate 63 can first be concave, increasing the tungsten-molybdenum alloy powder in the area below the inclined core rod 4, and then the elastic metal plate 63 is controlled to convex, increasing the pressure of the tungsten-molybdenum alloy powder in the area below the inclined core rod 4, thereby balancing the pressure of the tungsten-molybdenum alloy powder in the upper and lower areas of the inclined core rod 4, improving the uniformity of the pressure of the tungsten-molybdenum alloy powder in the upper and lower areas of the inclined core rod 4, and thus improving the structural strength of the material near the inclined hole of the guide rod 5 that is finally pressed and formed, and improving the quality of the molded part 7. When the pressing head 21 is about to press the tungsten-molybdenum alloy powder into shape, the elastic metal plate 63 can be controlled to be in a straight state to ensure the flatness of the bottom plane of the molded part 7.

[0036] It should be noted that, similar to commonly used pressing equipment, the lower mold 1 of this embodiment is fixedly mounted on the machine base 3, and the upper mold 2 is slidably mounted above the lower mold 1 through a guide rail structure. A pressure unit 31 is provided on the machine base 3, and the upper mold 2 is fixedly mounted on the output end of the pressure unit 31, wherein the pressure unit 31 is preferably a hydraulic cylinder structure, which can provide sufficient molding pressure.

[0037] Furthermore, the tilting core rod 4 is slidably installed in the lower mold 1, and a telescopic movable driver 32 is fixedly installed in the machine base 3. The tilting core rod 4 is fixedly installed on the output end of the telescopic movable driver 32, and the telescopic movable driver 32 can select a hydraulic cylinder structure or a cylinder structure, and is distributed along the axis of the tilting core rod 4, and the guide rod 5 can pass through the upper mold 2 and the pressing head 21, and be slidably installed in the upper mold 2. The top of the guide rod 5 is provided with a limiting structure for limiting the mutual position between the upper mold 2.

[0038] It should be noted that in actual use, the upper mold 2 is first controlled to descend a certain distance so that the bottom end of the guide rod 5 is docked with the top end of the inclined core rod 4. A positioning pin structure is provided between the top end of the inclined core rod 4 and the bottom end of the guide rod 5. Then, tungsten-molybdenum alloy powder can be filled into the cavity 11. After that, the upper mold 2 can be controlled to continue to press down for pressing. After the pressing is completed, the upper mold 2 is driven to rise. Under the action of the limiting structure at the top of the guide rod 5, the guide rod 5 can also be lifted upward, thereby disengaging from the inclined core rod 4. In order to ensure the stability between the guide rod 5 and the inclined core rod 4 during the downward pressing process of the pressing head 21, an elastic member can be provided between the guide rod 5 and the upper mold 2. The elastic member is used to provide a downward elastic force to the guide rod 5, thereby ensuring that the guide rod 5 can stably dock with the inclined core rod 4 during the descent of the upper mold 2.

[0039] In the above embodiment, the elastic metal plate 63 is an elastic structure. For a thicker molded part 7, the required molding pressure is greater. Therefore, even after the elastic metal plate 63 is restored to be straight, the pressure of the tungsten-molybdenum alloy powder in the mold cavity 11 may cause unevenness and affect the surface flatness of the molded part 7. For this reason, please refer to the attached manual. Figures 5 to 7 A flattening piece 64 is provided in the pressure chamber 62, and a piston chamber 65 is provided below the pressure chamber 62. The bottom end of the flattening piece 64 is fixedly connected to a piston piece 641, and the piston piece 641 is slidably installed in the piston chamber 65. A second pressure channel 651 is also provided in the movable column 61. The second pressure channel 651 is connected to the piston chamber 65, and the second pressure channel 651 is connected to the flattening hydraulic control unit through the second docking pipe 652. The flattening hydraulic control unit controls the lifting and lowering movement of the flattening piece 64 by controlling the liquid pressure in the piston chamber 65, and then drives the flattening piece 64 to rise and contact the elastic metal plate 63 after the elastic metal plate 63 returns to flatness. The elastic metal plate 63 is stably supported by the flattening piece 64 to ensure the flatness of the elastic metal plate 63 during the final stage of tungsten-molybdenum alloy powder molding.

[0040] It should be noted that, in this embodiment, the first butt joint 622 and the second butt joint 652 are both arranged on the outside of the bottom end of the movable column 61, and the convex-concave hydraulic control unit and the flattening hydraulic control unit used are both ordinary hydraulic systems, that is, the convex-concave hydraulic control unit and the flattening hydraulic control unit both include a hydraulic oil pump structure, and the first butt joint 622 and the second butt joint 652 are respectively connected to the corresponding oil pump structure through hydraulic pipes, and the convexity and concavity of the elastic metal plate 63 and the lifting and lowering of the flattening member 64 are controlled by controlling the amount of hydraulic oil in the pressure chamber 62 and the piston chamber 65.

[0041] Further, refer to the instructions attached Figure 3 and Figure 4 The movable column 61 is slidably arranged in the lower mold 1, and the movable column 61 passes through the structure of the bottom area of ​​the lower mold 1 corresponding to the cavity 11, and slides with the lower mold 1. A lifting and moving driver 33 is installed in the machine base 3, and the movable column 61 is fixedly connected to the output end of the lifting and moving driver 33. Among them, the lifting and moving driver 33 can select a cylinder structure or a hydraulic cylinder structure to control the lifting and lowering of the movable column 61, and then after the pressing and molding, the upper mold 2 is demoulded, and the movable column 61 can be lifted by the lifting and moving driver 33, and then the molded part 7 in the cavity 11 can be ejected upward to complete the unloading (after ejecting the molded part 7, it can be removed manually or by using a pushing structure. This embodiment will not be explained in detail).

[0042] In the above embodiment, since the tungsten-molybdenum alloy powder itself has a high hardness and the inclined core rod 4 is inclined, some tungsten-molybdenum alloy powder will move along the surface of the inclined core rod 4 during pressing. Therefore, in order to reduce the friction damage of the inclined core rod 4, refer to the attached manual. Figure 9 A storage groove 12 is provided in the lower mold 1, and the tilting core rod 4 is provided through the storage groove 12. The storage groove 12 is tilted in the lower mold 1, and the storage groove 12 extends to one side wall of the lower mold 1 and is formed with an opening. Solid lubricant is stored in the storage groove 12, for example: metal lubricant (such as molybdenum lubricant, inorganic salts such as sodium chloride, organic substances such as polyethylene, etc.). During use, the tilting core rod 4 needs to move repeatedly along its length direction. Therefore, when the tilting core rod 4 passes through the storage groove 12, a layer of solid lubricant can be attached to the surface of the tilting core rod 4, and then after the tilting core rod 4 is extended into the cavity 11, a lubrication effect can be formed between the pressurized tungsten-molybdenum alloy powder, thereby reducing the wear of the tilting core rod 4.

[0043] Furthermore, due to the inclined setting of the inclined core rod 4, under the downward pressure of the pressing head 21 and the action of the top pressing assembly 6, the tungsten-molybdenum alloy powder at the upper and lower parts of the inclined core rod 4 is squeezed and the bonding strength between the inclined core rod 4 is high, and the relative friction is large, so it is not easy for the inclined core rod 4 to be pulled out of the molded part 7. For this reason, refer to the attached manual. Figure 9 and Figure 10 , a flow channel 41 is provided inside the tilting core rod 4, and a fourth butt joint pipe 43 and a third butt joint pipe 42 are provided at one end of the tilting core rod 4 close to the telescopic moving driver 32. The flow channel 41 is U-shaped and distributed in the flow channel 41 along the length direction of the tilting core rod 4. The fourth butt joint pipe 43 and the third butt joint pipe 42 are respectively connected to the two ends of the flow channel 41, and the third butt joint pipe 42 is connected to a cold source providing unit, which includes a cold source pump. The cold source pump is connected to a low-temperature fluid through a pipeline. The low-temperature fluid can be water or other fluids. The fluid passes through a cooling device such as a refrigerator. Preparation, so that it forms a low-temperature fluid. After pressing and molding, the cold source pump of the cold source providing unit is controlled to deliver the low-temperature fluid to the flow channel 41, so that the tilting core rod 4 is cooled and contracted. The thermal expansion coefficient of tungsten-molybdenum alloy is low, and the deformation caused by temperature is small. Therefore, the tilting core rod 4 can be separated from the hole wall of the molded part 7 before pulling, and then it is easier to control the tilting core rod 4 to be pulled out in the subsequent telescopic moving driver 32, and the tilting core rod 4 will not rub against the hole wall of the molded part 7 to cause mutual damage, thereby improving the practicality of the equipment while further improving the processing quality of the molded part 7.

[0044] Furthermore, the fourth butt joint 43 is connected to a heat source providing unit, which includes a heat source pump. The heat source pump is connected to a high-temperature fluid through a pipeline. The high-temperature fluid can be water or other fluids. The fluid passes through a heating structure such as a heater to form a high-temperature fluid. Before pressing and molding, the heat source pump of the heat source providing unit is controlled to deliver the high-temperature fluid to the flow channel 41 through the fourth butt joint 43 to increase the temperature of the inclined core rod 4. The solid lubricant in the storage tank 12 can be a hot-melt material, such as polyethylene (PE) (which has a relatively low melting point of approximately 110°C to 130°C). When heated to these temperatures, polyethylene can melt. As a lubricant, it is used in the fields of plastic processing, metal processing, etc. to provide surface lubrication and reduce friction. After the tilted core rod 4 enters the cavity 11, the tilted core rod 4 can be heated to melt the solid lubricant on its surface, thereby forming a coating on the surface of the tilted core rod 4 to improve the lubrication effect. At the same time, the tilted core rod 4 expands after being heated, and then maintains the expanded state during the pressing process. After the molding is completed, the tilted core rod 4 is cooled to increase the relative size of the contraction of the tilted core rod 4, thereby further improving the effect of separating the tilted core rod 4 from the hole wall of the molded part 7.

[0045] Refer to the instruction manual Figure 10 and 11 A plurality of impact balls 44 are provided in the flow channel 41. The impact balls 44 can be hollow metal balls or balls made of other materials, and a plurality of protrusion structures 45 are provided on the inner wall of the flow channel 41. When the third docking tube 42 or the fourth docking tube 43 inputs fluid into the flow channel 41, the movement of the fluid can drive the impact balls 44 to flow and collide with the protrusion structures 45, thereby causing the tilting core rod 4 to vibrate slightly, further improving the separation effect between the tilting core rod 4 and the molded part 7, especially when the tilting core rod 4 passes through the storage groove 12, it can drive the solid lubricant powder therein to vibrate, thereby avoiding condensation of the solid lubricant powder and ensuring the coating effect of the solid lubricant on the outer wall of the tilting core rod 4.

[0046] The above-described embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A tungsten-molybdenum alloy forming device, characterized in that: The invention comprises a lower die (1) and an upper die (2), wherein the lower die (1) and the upper die (2) are arranged to move relative to each other, a cavity (11) is arranged in the lower die (1), a pressing head (21) is arranged at a position of the upper die (2) corresponding to the cavity (11), an inclined core rod (4) is arranged inside the cavity (11), a guide rod (5) is arranged inside the upper die (2), and the top end of the inclined core rod (4) is butted against the guide rod (5); A pressing assembly (6) is arranged in an area below the inclined core rod (4) at the bottom side of the cavity (11), the pressing assembly (6) comprising a movable column (61), the top end of the movable column (61) being arranged corresponding to the bottom wall of the cavity (11), a pressure chamber (62) being arranged inside the top end of the movable column (61), an elastic metal plate (63) being fixedly mounted on the top of the pressure chamber (62), the pressure chamber (62) being connected to a first pressure channel (621), and the first pressure channel (621) being connected to a convex-concave hydraulic control unit via a first butt joint pipe (622); The convex-concave hydraulic control unit is used to increase the pressure in the pressure chamber (62) so that the elastic metal plate (63) deforms upward, or to reduce the pressure in the pressure chamber (62) so that the elastic metal plate (63) deforms downward.

2. A tungsten-molybdenum alloy forming device according to claim 1, characterized in that: The lower die (1) is fixedly mounted on a machine base (3); the upper die (2) is slidably mounted above the lower die (1) via a guide rail structure; a pressure unit (31) is provided on the machine base (3); and the upper die (2) is fixedly mounted on an output end of the pressure unit (31).

3. A tungsten-molybdenum alloy forming device according to claim 2, characterized in that: The tilting core rod (4) is slidably mounted in the lower die (1); a telescopic movable driver (32) is fixedly mounted in the machine base (3); the tilting core rod (4) is fixedly mounted on the output end of the telescopic movable driver (32); the guide rod (5) passes through the upper die (2) and the pressing head (21) and is slidably mounted in the upper die (2); a limiting structure for limiting the guide rod (5) and the upper die (2) is provided at the top.

4. A tungsten-molybdenum alloy forming device according to claim 3, characterized in that: The butt joint between the inclined core rod (4) and the guide rod (5) is arranged to correspond to the top forming surface of the forming piece (7); a positioning pin structure is arranged between the top end of the inclined core rod (4) and the bottom end of the guide rod (5); and an elastic member is arranged between the guide rod (5) and the upper mold (2); the elastic member is used to provide a downward elastic force to the guide rod (5).

5. A tungsten-molybdenum alloy forming device according to claim 4, characterized in that: A flattening member (64) is provided in the pressure chamber (62), a piston chamber (65) is provided below the pressure chamber (62), a piston member (641) is fixedly connected to the bottom end of the flattening member (64), the piston member (641) is slidably mounted in the piston chamber (65), the piston chamber (65) is connected to a second pressure channel (651), the second pressure channel (651) is connected to a flattening hydraulic control unit via a second butt joint (652), and the flattening hydraulic control unit controls the lifting and lowering of the flattening member (64) by controlling the liquid pressure in the piston chamber (65).

6. A tungsten-molybdenum alloy forming device according to claim 5, characterized in that: The first pressure channel (621) and the second pressure channel (651) are both formed inside the movable column (61); the first butt joint pipe (622) and the second butt joint pipe (652) are both arranged on the outside of the bottom end of the movable column (61); the convex-concave hydraulic control unit and the flattening hydraulic control unit both include a hydraulic oil pump structure; the first butt joint pipe (622) and the second butt joint pipe (652) are respectively connected to the corresponding oil pump structure via hydraulic pipes.

7. A tungsten-molybdenum alloy forming device according to claim 6, characterized in that: The movable column (61) is slidably arranged in the lower mold (1), and the movable column (61) penetrates the structure of the bottom area of ​​the corresponding cavity (11) of the lower mold (1) and slidably cooperates with the lower mold (1). A lifting and moving driver (33) is installed in the machine base (3), and the movable column (61) is fixedly connected to the output end of the lifting and moving driver (33).

8. A tungsten-molybdenum alloy forming device according to claim 7, characterized in that: A storage groove (12) is provided in the lower die (1), the inclined core rod (4) is arranged to penetrate the storage groove (12), the storage groove (12) is arranged to be inclined in the lower die (1), and the storage groove (12) extends to a side wall of the lower die (1) and is formed with an opening, and solid lubricant is stored in the storage groove (12).

9. A tungsten-molybdenum alloy forming device according to claim 8, characterized in that: A flow channel (41) is provided inside the tilting core rod (4), and a fourth butt joint pipe (43) and a third butt joint pipe (42) are provided at one end of the tilting core rod (4) close to the telescopic moving driver (32). The flow channel (41) is U-shaped and is distributed in the flow channel (41) along the length direction of the tilting core rod (4). The fourth butt joint pipe (43) and the third butt joint pipe (42) are respectively connected to two ends of the flow channel (41). The third butt joint pipe (42) is connected to a cold source providing unit, which includes a cold source pump, and the cold source pump is connected to a low-temperature fluid via a pipeline. The fourth butt joint pipe (43) is connected to a heat source providing unit, which includes a heat source pump, and the heat source pump is connected to a high-temperature fluid via a pipeline. The solid lubricant in the storage tank (12) is a hot-melt material.

10. A tungsten-molybdenum alloy forming device according to claim 9, characterized in that: A plurality of impact balls (44) are arranged in the flow channel (41), and a plurality of protrusion structures (45) are arranged on the inner wall of the flow channel (41).

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