CN115156534A - Stamping process and equipment for powder metallurgy - Google Patents
Stamping process and equipment for powder metallurgy Download PDFInfo
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- CN115156534A CN115156534A CN202210792594.9A CN202210792594A CN115156534A CN 115156534 A CN115156534 A CN 115156534A CN 202210792594 A CN202210792594 A CN 202210792594A CN 115156534 A CN115156534 A CN 115156534A
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- 238000004663 powder metallurgy Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 59
- 239000000843 powder Substances 0.000 claims abstract description 31
- 238000004080 punching Methods 0.000 claims abstract description 31
- 239000002994 raw material Substances 0.000 claims abstract description 20
- 238000007493 shaping process Methods 0.000 claims abstract description 14
- 238000003825 pressing Methods 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 239000000314 lubricant Substances 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims abstract description 6
- 238000001125 extrusion Methods 0.000 claims description 26
- 238000005245 sintering Methods 0.000 claims description 20
- 239000011265 semifinished product Substances 0.000 claims description 18
- 239000000047 product Substances 0.000 claims description 17
- 238000012856 packing Methods 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 12
- 238000007654 immersion Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 6
- 239000002699 waste material Substances 0.000 claims description 5
- 238000005255 carburizing Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000005238 degreasing Methods 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 238000010791 quenching Methods 0.000 claims description 3
- 230000000171 quenching effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 34
- 239000007858 starting material Substances 0.000 abstract 1
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
- B22F3/03—Press-moulding apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/16—Both compacting and sintering in successive or repeated steps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
Abstract
The invention discloses a stamping process and equipment for powder metallurgy, which comprises the following steps: the method comprises the following steps: mixing materials, namely uniformly mixing metal powder lubricant according to a certain proportion to form raw material powder; step two: and (4) blank forming, namely putting the raw material powder mixed in the step one into a powder forming machine, sending the raw material powder into a preset product die by the powder forming machine, and pressing at normal temperature to form a blank of a product. The staff can place the material in the inside of flourishing workbin, starter motor can make the auger take place rotatoryly under the effect of belt, can make the material add the inside of punching press shell through slope pan feeding pipe, start the height that first hydraulic lift can adjust the removal seat, thereby utilize the punching press head to carry out stamping forming to the material of punching press shell inside, after the shaping is accomplished, adjust the height that removes the seat through controlling first hydraulic lift, then start second hydraulic lift and drive the upward movement of punching press roof, with this purpose of realizing ejecting shaping material.
Description
Technical Field
The invention relates to the technical field of powder metallurgy, in particular to a stamping process and equipment for powder metallurgy.
Background
Powder metallurgy is a process technique for manufacturing metal materials and composite material products by using metal powder or a mixture of metal powder and nonmetal powder as a raw material and performing press forming and sintering, and people generally adopt a punch press to perform press forming on the press raw material.
When stamping forming is carried out on stamping raw materials, a feeding device on a stamping machine can feed materials into a die cavity of a bottom die, then the stamping machine drives an upper die to move downwards, a stamping rod on the upper die is inserted into the die cavity of the bottom die, so that the stamping raw materials in the die cavity are extruded, the stamping raw materials are made into part prototypes with specific shapes, and then the part prototypes are sintered to form required finished parts.
Disclosure of Invention
In order to solve the technical problem, the invention provides a stamping process for powder metallurgy, which comprises the following steps:
the method comprises the following steps: mixing, namely uniformly mixing the metal powder lubricant according to a certain proportion to form raw material powder;
step two: step one, blank forming, namely putting the raw material powder mixed in the step one into a powder forming machine, sending the raw material powder into a preset product mold by the powder forming machine, pressing the raw material powder into a blank of a product at normal temperature, and taking out the blank for later use;
step three: degreasing, namely heating the blank in the step two, keeping the heating temperature below 300 ℃, and keeping the heating time till all the lubricants in the blank are removed;
step four: sintering, namely rapidly putting the blank degreased in the third step into a high-temperature environment with protective gas at a temperature of more than 800 ℃ from below 300 ℃ for sintering for 2-3 hours, forming a primary workpiece after sintering, and cooling for later use;
step five: primary shaping, namely performing primary shaping on the sintered primary workpiece according to the shape of a finished workpiece, and picking out waste materials;
step six: secondary sintering, namely putting the shaped primary workpiece in the fifth step into a high-temperature environment of 1200 ℃, introducing protective gas, and sintering again, wherein a semi-finished product is obtained after the secondary sintering is finished for later use;
step seven: fine shaping, namely deburring the semi-finished product after secondary sintering in the sixth step, performing fine shaping according to product standards, and picking out unqualified products;
step eight: performing heat treatment, namely performing carburizing treatment and quenching treatment on the semi-finished product piece processed in the step seven;
step nine: vacuum oil immersion, namely cooling the semi-finished product processed in the step eight and performing vacuum oil immersion treatment;
step ten: steam treatment, namely cleaning the semi-finished product subjected to the vacuum oil immersion treatment in the step nine, and then performing steam treatment to form an anti-rust layer on the surface of the semi-finished product, wherein the finished product is obtained after the steam treatment is finished
The utility model provides a stamping equipment for powder metallurgy, includes the punching machine, the punching machine includes the base, the first hydraulic lift of top four corners difference fixedly connected with of base, the one end fixedly connected with removal seat of base is kept away from to first hydraulic lift, the bottom outer wall axis department fixedly connected with punching press head of removing the seat, the inside sky setting of base, the left and right sides wall difference fixedly connected with containing box of base, containing box's inside is provided with the auger, the both ends of auger run through containing box's both sides wall respectively and extend to the outside, the rear side extension of auger passes through the bearing and is connected with containing box's lateral wall rotation, the front side extension surface cover of auger is equipped with the belt, the left side the front side extension fixedly connected with motor of auger, the top axis department of base is provided with the punching press shell, the bottom opening setting of punching press shell, the bottom side inner wall axis department fixedly connected with second hydraulic lift of bottom side of base, the one end fixedly connected with punching press roof that base inner wall was kept away from to the second hydraulic lift, the top axis department fixedly connected with punching press roof, wherein, the bottom side wall of punching press shell slides and sets up the slope side wall that the side wall communicates with the punching press shell, the pan feeding pipe intercommunication that inclines respectively.
Furthermore, the bottom side inner wall center shaft of the material containing box is fixedly connected with an elliptical extrusion bag, the side wall of the elliptical extrusion bag is fixedly connected with an inclined rod, one end, far away from the elliptical extrusion bag, of the inclined rod slides to penetrate through the inside of the inclined feeding pipe, the top of the stamping top plate is fixedly connected with a plurality of semicircular rubber shells, the semicircular rubber shells face the inclined rod in arrangement, the outer wall of the top of the stamping top plate is provided with a plurality of small holes, and the small holes face the plurality of semicircular rubber shells respectively in arrangement.
Furthermore, a lifting rod is arranged right below the semicircular rubber shell, the top of the lifting rod is arranged in a spherical shape, a limiting spring is fixedly connected to the bottom of the lifting rod, and one end, far away from the lifting rod, of the limiting spring is fixedly connected with the inner wall of the bottom side of the base.
Furthermore, a connecting spring is fixedly connected to the center shaft of the side wall of the lifting rod, and a connecting ball is fixedly connected to one end, far away from the lifting rod, of the connecting spring.
Furthermore, the top axis department fixedly connected with vibrations pole of connecting the ball, the vibrations pole is kept away from the one end of connecting the ball and is slided and run through the outer wall of punching press roof and extend to the outside, wherein, the extension of vibrations pole is spherical setting, the vibrations pole is spherical setting portion and has elasticity.
Furthermore, an L-shaped push rod is fixedly connected to the middle shaft of the side wall of the connecting ball, an elliptical air bag is fixedly connected to one end, far away from the connecting ball, of the L-shaped push rod, and the elliptical air bag is arranged inside the outer wall of the top of the base.
Furthermore, the upper side wall of the elliptical air bag is communicated with an auxiliary pipe, an air pressure push rod is arranged in the auxiliary pipe in a sliding mode, and the outer wall of the air pressure push rod is in contact with the inner wall of the auxiliary pipe.
Furthermore, the air pressure push rod can penetrate through the auxiliary pipe in a sliding mode and extend to the outer side, the extension portion of the air pressure push rod is fixedly connected with the arc-shaped collecting plates, the outer wall of the bottom side of each arc-shaped collecting plate is in contact with the top of the base, and every two tension springs are fixedly connected between the arc-shaped collecting plates.
Compared with the prior art, the invention has the beneficial effects that:
(1) According to the invention, a worker can place materials in the material containing box, the auger can be rotated under the action of the belt by starting the motor, the materials can be added into the punching shell through the inclined material inlet pipe, the height of the movable seat can be adjusted by starting the first hydraulic lifter, so that the materials in the punching shell can be subjected to punch forming by using the punching head, after the forming is finished, the height of the movable seat is adjusted by controlling the first hydraulic lifter, and then the second hydraulic lifter is started to drive the punching top plate to move upwards, so that the purpose of ejecting the formed materials is realized.
(2) According to the invention, the auger rotates, and the auger is in a threaded state, and the elliptical extrusion bag is arranged at the center shaft of the material containing box, so that when the auger rotates, the elliptical extrusion bag can be intermittently extruded a little bit all the time, the elliptical extrusion bag can be deformed under the extrusion effect, and under the deformation effect, the inclined rod can be pushed to move in the inclined material inlet pipe, so that the moving effect of the inclined rod is utilized to accelerate the speed of the material entering the stamping shell, and meanwhile, when the inclined rod moves, the material entering the stamping shell can be vibrated, so that the material is more compact, and the stamping forming effect of the device is enhanced.
(3) According to the invention, when the inclined rod moves into the stamping shell, the semicircular rubber shell can be extruded, the semicircular rubber shell can deform under the extrusion effect, the lifting rod can move up and down under the deformation effect, the connecting spring can drive the connecting ball to move up and down, the vibrating rod can move up and down, and the material in the stamping shell can be further vibrated by the up-and-down movement of the vibrating rod, so that the compacting effect of the device on the material is enhanced.
(4) According to the invention, the connecting ball can drive the L-shaped push rod to move up and down due to the up-and-down movement of the connecting ball, the elliptical air bag can be extruded, the elliptical air bag can be deformed under the extrusion effect, gas in the elliptical air bag can enter the auxiliary pipe, and the air pressure push rod can push the arc-shaped collecting plate to move at the top of the base under the action of the gas pushing force, so that materials overflowing from the top of the base can be collected and utilized, the waste of the materials is avoided, and the punch forming effect of the device is enhanced.
Drawings
FIG. 1 is an overall flow chart of the stamping process of the present invention;
FIG. 2 is a schematic view of the overall structure of the press of the present invention;
FIG. 3 is a schematic view of the overall structure of the base of the present invention;
FIG. 4 is a sectional view of the overall structure of the base of the present invention;
FIG. 5 is an enlarged view of A of FIG. 4 according to the present invention;
FIG. 6 is a schematic view of the overall structure of the punch housing of the present invention;
FIG. 7 is a schematic view of the overall structure of the L-shaped push rod of the present invention;
FIG. 8 is a schematic view of the overall structure of the punch top plate according to the present invention;
fig. 9 is a schematic view of the overall structure of the arc-shaped collecting plate.
In the figure: 1. a base; 11. a first hydraulic lift; 12. a movable seat; 13. punching a head; 14. a material containing box; 15. a packing auger; 2. a belt; 21. a motor; 3. stamping the shell; 31. a second hydraulic elevator; 32. punching a top plate; 33. a male die; 34. inclining a feeding pipe; 4. an elliptical squeezing bladder; 41. an inclined lever; 42. a semicircular rubber shell; 5. a lifting rod; 51. a limit spring; 52. a connecting spring; 53. a connecting ball; 6. a vibration rod; 7. an L-shaped push rod; 71. an elliptical air cell; 8. an auxiliary tube; 81. an air pressure push rod; 82. an arc-shaped collecting plate; 83. a tension spring.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Example 1
Referring to fig. 1, the present invention is a stamping process for powder metallurgy, comprising the following steps:
the method comprises the following steps: mixing materials, namely uniformly mixing metal powder lubricant according to a certain proportion to form raw material powder;
step two: step one, blank forming, namely putting the raw material powder mixed in the step one into a powder forming machine, sending the raw material powder into a preset product mold by the powder forming machine, pressing the raw material powder into a blank of a product at normal temperature, and taking out the blank for later use;
step three: degreasing, namely heating the blank in the step two, keeping the heating temperature below 300 ℃, and keeping the heating time until all lubricants in the blank are removed;
step four: sintering, namely rapidly putting the blank degreased in the third step into a high-temperature environment with protective gas at a temperature of more than 800 ℃ from below 300 ℃ for sintering for 2-3 hours, forming a primary workpiece after sintering, and cooling for later use;
step five: primary shaping, namely performing primary shaping on the sintered primary workpiece according to the shape of a finished product, and picking out waste materials;
step six: secondary sintering, namely putting the shaped primary workpiece in the step five into a high-temperature environment of 1200 ℃, introducing protective gas for secondary sintering, and obtaining a semi-finished product for later use after the secondary sintering is finished;
step seven: fine shaping, namely deburring the semi-finished product which is sintered for the second time in the sixth step, performing fine shaping according to product standards, and picking out unqualified products;
step eight: performing heat treatment, namely performing carburizing treatment and quenching treatment on the semi-finished product piece processed in the step seven;
step nine: vacuum oil immersion, namely cooling the semi-finished product processed in the step eight and performing vacuum oil immersion treatment;
step ten: and (4) steam treatment, namely cleaning the semi-finished product subjected to the vacuum oil immersion treatment in the ninth step, and then performing steam treatment to form an anti-rust layer on the surface of the semi-finished product, wherein the finished product is obtained after the steam treatment is finished.
Example 2
Referring to fig. 2 to 9, the invention relates to a stamping device for powder metallurgy, which comprises a stamping machine, wherein the stamping machine comprises a base 1, the purpose of the arrangement is to facilitate stamping, four corners of the top of the base 1 are respectively and fixedly connected with a first hydraulic lifter 11, the purpose of the arrangement is to facilitate adjusting the distance of a movable seat 12, one end, away from the base 1, of the first hydraulic lifter 11 is fixedly connected with the movable seat 12, the purpose of the arrangement is to facilitate stamping of powder, a central shaft of the outer wall of the bottom of the movable seat 12 is fixedly connected with a stamping head 13, the purpose of the arrangement is to perform stamping forming, the inside of the base 1 is hollowed, the purpose of the arrangement is to facilitate arrangement of an internal structure, the left side wall and the right side wall of the base 1 are respectively and fixedly connected with a material containing box 14, the purpose of the arrangement is to facilitate material containing, and an auger 15 is arranged inside the material containing box 14, and the purpose of the arrangement is to facilitate stirring of the material;
the two ends of the packing auger 15 penetrate through the two side walls of the material containing box 14 respectively and extend to the outer side, the purpose of the arrangement is to facilitate the limiting of the packing auger 15, the rear side extension of the packing auger 15 is rotatably connected with the side walls of the material containing box 14 through a bearing, the purpose of the arrangement is to facilitate the rotation of the packing auger 15, the outer surface of the front side extension of the packing auger 15 is sleeved with a belt 2, the purpose of the arrangement is to facilitate the transmission of the packing auger 15, the front side extension of the packing auger 15 on the left side is fixedly connected with a motor 21, and the purpose of the arrangement is to facilitate the provision of external power;
the stamping shell 3 is arranged at the top middle shaft of the base 1, the purpose of the arrangement is to facilitate stamping forming, the bottom opening of the stamping shell 3 is arranged, the purpose of the arrangement is to facilitate limiting of the stamping shell 3, the middle shaft of the bottom side inner wall of the base 1 is fixedly connected with a second hydraulic lifter 31, the purpose of the arrangement is to facilitate ejection of formed materials, one end, far away from the bottom side inner wall of the base 1, of the second hydraulic lifter 31 is fixedly connected with a stamping top plate 32, the purpose of the arrangement is to facilitate ejection of materials, the middle shaft of the top of the stamping top plate 32 is fixedly connected with a male die 33, and the purpose of the arrangement is to facilitate forming;
wherein, the setting of punching press roof 32 slides inside the bottom side of punching press shell 3, and the purpose that sets up like this is for the convenience of the removal of punching press roof 32, and the left and right sides wall of the downside of punching press shell 3 communicates respectively and is provided with slope pan feeding pipe 34, and the purpose that sets up like this is for the convenience of pan feeding, and the one end that slope pan feeding pipe 34 is kept away from punching press shell 3 sets up with the lateral wall intercommunication of containing workbin 14, and the purpose that sets up like this is for the convenience of the flow of material.
Preferably, in the embodiment, in order to facilitate utilization of extrusion force generated by rotation of the auger 15, the elliptical extrusion bag 4 is fixedly connected to the central axis of the inner wall of the bottom side of the material containing box 14, so as to facilitate utilization of intermittent extrusion of the auger 15, the side wall of the elliptical extrusion bag 4 is fixedly connected with the inclined rod 41, so as to facilitate utilization of deformation effect of the elliptical extrusion bag 4, one end of the inclined rod 41, which is far away from the elliptical extrusion bag 4, slides through the inner part of the inclined material inlet pipe 34, and so as to facilitate movement of the inclined rod 41;
wherein, a plurality of semicircle rubber shell 42 of top fixedly connected with of punching press roof 32, the purpose that sets up like this is for the convenience of the removal extrusion of slope pole 41, semicircle rubber shell 42 is just facing slope pole 41 setting, the purpose that sets up like this is for the convenience of the deformation of semicircle rubber shell 42, a plurality of aperture has been seted up to the top outer wall of punching press roof 32, the purpose that sets up like this is for the convenience of carrying on spacingly to punching press roof 32, a plurality of aperture is facing a plurality of semicircle rubber shell 42 setting respectively, the purpose that sets up like this is for the convenience of the deformation effect who utilizes semicircle rubber shell 42.
Preferably, in this embodiment, in order to facilitate utilizing the deformation effect of semicircle rubber shell 42, semicircle rubber shell 42 is provided with lifter 5 directly under, the purpose that sets up like this is for facilitating the reciprocating of lifter 5, the top of lifter 5 is spherical setting, the purpose that sets up like this is for facilitating carrying on spacingly to lifter 5, the bottom fixedly connected with spacing spring 51 of lifter 5, the purpose that sets up like this is for facilitating the quick reset of lifter 5, the one end that lifter 5 was kept away from to spacing spring 51 and the bottom side inner wall fixed connection of base 1, the purpose that sets up like this is for facilitating fixing spacing spring 51.
Preferably, in this embodiment, in order to facilitate the utilization of the moving effect of the lifting rod 5, a connecting spring 52 is fixedly connected to a central axis of a side wall of the lifting rod 5, which is provided to facilitate the auxiliary arrangement of the connecting ball 53, and a connecting ball 53 is fixedly connected to an end of the connecting spring 52 far away from the lifting rod 5, which is provided to facilitate the conduction of the moving effect of the lifting rod 5.
Preferably, in this embodiment, in order to utilize the moving effect of the connecting ball 53, the vibration rod 6 is fixedly connected to the top center axis of the connecting ball 53, and this is provided to facilitate utilizing the moving effect of the connecting ball 53, and one end of the vibration rod 6 far away from the connecting ball 53 slides through the outer wall of the pressing top plate 32 and extends to the outside, and this is provided to facilitate the moving of the vibration rod 6;
wherein, the extension of vibrations pole 6 is the spherical setting, and the purpose that sets up like this is for the convenience of vibrations pole 6 to carry on spacingly, and vibrations pole 6 is that the spherical setting part has elasticity, and the purpose that sets up like this is for the convenience of vibration pole 6's top to carry out extrusion deformation.
Preferably, in this embodiment, in order to further utilize the moving effect of the connecting ball 53, the L-shaped push rod 7 is fixedly connected to the central axis of the side wall of the connecting ball 53, and this is arranged to facilitate utilizing the moving effect of the connecting ball 53, and an elliptical air bag 71 is fixedly connected to an end of the L-shaped push rod 7 away from the connecting ball 53, and this is arranged to facilitate utilizing the moving effect of the L-shaped push rod 7, and the elliptical air bag 71 is arranged inside the outer wall of the top of the base 1, and this is arranged to facilitate fixing the elliptical air bag 71.
Preferably, in this embodiment, in order to facilitate the use of the deformation effect of the elliptical air bag 71, the upper side wall of the elliptical air bag 71 is communicated with the auxiliary tube 8, the purpose of the setting is to facilitate the flow of gas, the air pressure push rod 81 is slidably arranged inside the auxiliary tube 8, the purpose of the setting is to facilitate the use of the pushing effect of gas, the outer wall of the air pressure push rod 81 is in contact with the inner wall of the auxiliary tube 8, and the purpose of the setting is to facilitate the limit of the air pressure push rod 81.
Preferably, in this embodiment, in order to facilitate the use of the moving effect of the air pressure push rod 81, the air pressure push rod 81 slidably penetrates through the auxiliary pipe 8 and extends to the outside, the purpose of the setting is to facilitate the movement of the air pressure push rod 81, the extension part of the air pressure push rod 81 is fixedly connected with the arc-shaped collecting plate 82, the purpose of the setting is to facilitate the use of the moving effect of the air pressure push rod 81, the bottom outer wall of the arc-shaped collecting plate 82 is in contact with the top of the base 1, the purpose of the setting is to facilitate the limit of the arc-shaped collecting plate 82, the tension spring 83 is fixedly connected between every two arc-shaped collecting plates 82, and the purpose of the setting is to facilitate the limit of the arc-shaped collecting plate 82.
One specific application of this embodiment is:
the working personnel can place the materials in the material containing box 14, the motor 21 can be started to enable the packing auger 15 to rotate under the action of the belt 2, the materials can be added into the stamping shell 3 through the inclined material inlet pipe 34, the first hydraulic lifting machine 11 can be started to adjust the height of the moving seat 12, so that the stamping forming of the materials in the stamping shell 3 is achieved through the stamping head 13, after the forming is completed, the height of the moving seat 12 is adjusted through controlling the first hydraulic lifting machine 11, then the second hydraulic lifting machine 31 is started to drive the stamping top plate 32 to move upwards, the purpose of ejecting the formed materials is achieved, next, the packing auger 15 rotates, as the packing auger 15 is in a threaded state, and the elliptical extrusion bag 4 is arranged at the middle shaft of the material containing box 14, so that the packing auger 15 can intermittently extrude the elliptical extrusion bag 4 all the materials under the extrusion effect, the elliptical extrusion bag 4 can be deformed under the deformation effect, the rod 41 can be pushed to move in the inclined material inlet pipe 34, the moving effect of the materials can be accelerated by the moving effect, the speed of the material in the stamping shell 3, and the inclined shell can be more compact when the inclined rod moves, and the inclined material stamping forming device can further enhance the material stamping forming effect.
Meanwhile, when the inclined rod 41 moves into the interior of the stamping shell 3, the semicircular rubber shell 42 can be extruded, the semicircular rubber shell 42 can deform under the extrusion effect, the lifting rod 5 can be made to move up and down under the deformation effect, the connecting spring 52 can be made to drive the connecting ball 53 to move up and down, the vibrating rod 6 can be made to move up and down, the vibrating rod 6 can move up and down, further vibration can be carried out on the material inside the stamping shell 3, the compact effect of the device on the material is enhanced, secondly, the connecting ball 53 can move up and down, the L-shaped push rod 7 can be driven to move up and down, the elliptical air bag 71 can be extruded, under the extrusion effect, the elliptical air bag 71 can be made to deform, the gas inside the elliptical air bag 71 can enter the interior of the auxiliary pipe 8, under the action of gas pushing force, the gas pushing rod 81 can be made to push the arc-shaped collecting plate 82 to move at the top of the base 1, the overflowing material at the top of the base 1 can be collected and utilized, the waste of the material is avoided, and the stamping forming effect of the device is enhanced.
It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by one of ordinary skill in the art and related arts based on the embodiments of the present invention without any creative effort, shall fall within the protection scope of the present invention. Structures, devices, and methods of operation not specifically described or illustrated herein are not specifically illustrated or described, but are instead contemplated to be practiced in the art by those skilled in the art.
Claims (9)
1. A stamping process for powder metallurgy is characterized in that: the method comprises the following steps:
the method comprises the following steps: mixing, namely uniformly mixing the metal powder lubricant according to a certain proportion to form raw material powder;
step two: step one, blank forming, namely putting the raw material powder mixed in the step one into a powder forming machine, sending the raw material powder into a preset product mold by the powder forming machine, pressing the raw material powder into a blank of a product at normal temperature, and taking out the blank for later use;
step three: degreasing, namely heating the blank in the step two, keeping the heating temperature below 300 ℃, and keeping the heating time until all lubricants in the blank are removed;
step four: sintering, namely rapidly putting the blank degreased in the third step into a high-temperature environment with protective gas at a temperature of more than 800 ℃ from below 300 ℃ for sintering for 2-3 hours, forming a primary workpiece after sintering, and cooling for later use;
step five: primary shaping, namely performing primary shaping on the sintered primary workpiece according to the shape of a finished workpiece, and picking out waste materials;
step six: secondary sintering, namely putting the shaped primary workpiece in the step five into a high-temperature environment of 1200 ℃, introducing protective gas for secondary sintering, and obtaining a semi-finished product for later use after the secondary sintering is finished;
step seven: fine shaping, namely deburring the semi-finished product which is sintered for the second time in the sixth step, performing fine shaping according to product standards, and picking out unqualified products;
step eight: performing heat treatment, namely performing carburizing treatment and quenching treatment on the semi-finished product piece processed in the step seven;
step nine: vacuum oil immersion, namely cooling the semi-finished product processed in the step eight and performing vacuum oil immersion treatment;
step ten: and (4) steam treatment, namely cleaning the semi-finished product subjected to the vacuum oil immersion treatment in the ninth step, and then performing steam treatment to form an anti-rust layer on the surface of the semi-finished product, wherein the finished product is obtained after the steam treatment is finished.
2. A stamping equipment for powder metallurgy, includes the punching machine, its characterized in that: the punching machine comprises a base (1), four corners of the top of the base (1) are respectively and fixedly connected with a first hydraulic lifter (11), one end, far away from the base (1), of the first hydraulic lifter (11) is fixedly connected with a moving seat (12), a punching head (13) is fixedly connected to the middle shaft of the outer wall of the bottom of the moving seat (12), the base (1) is hollowed, the left side wall and the right side wall of the base (1) are respectively and fixedly connected with a material containing box (14), and a packing auger (15) is arranged inside the material containing box (14);
the two ends of the auger (15) penetrate through the two side walls of the material containing box (14) respectively and extend to the outer side, a rear side extension of the auger (15) is rotatably connected with the side walls of the material containing box (14) through a bearing, a belt (2) is sleeved on the outer surface of the front side extension of the auger (15), and a motor (21) is fixedly connected with the front side extension of the auger (15) on the left side;
a stamping shell (3) is arranged at the top center shaft of the base (1), the bottom of the stamping shell (3) is provided with an opening, a second hydraulic lifter (31) is fixedly connected at the center shaft of the bottom side inner wall of the base (1), one end, far away from the bottom side inner wall of the base (1), of the second hydraulic lifter (31) is fixedly connected with a stamping top plate (32), and a male die (33) is fixedly connected at the top center shaft of the stamping top plate (32);
the stamping top plate (32) is arranged inside the bottom side of the stamping shell (3) in a sliding mode, the left side wall and the right side wall of the lower side of the stamping shell (3) are respectively provided with an inclined feeding pipe (34) in a communicated mode, and one end, far away from the stamping shell (3), of the inclined feeding pipe (34) is communicated with the side wall of the material containing box (14).
3. The pressing apparatus for powder metallurgy according to claim 2, wherein: an elliptic extrusion bag (4) is fixedly connected to the central axis of the inner wall of the bottom side of the material containing box (14), an inclined rod (41) is fixedly connected to the side wall of the elliptic extrusion bag (4), and one end, far away from the elliptic extrusion bag (4), of the inclined rod (41) penetrates through the inner part of the inclined material inlet pipe (34) in a sliding manner;
the top of the stamping top plate (32) is fixedly connected with a plurality of semicircular rubber shells (42), the semicircular rubber shells (42) face the inclined rod (41) in arrangement, the outer wall of the top of the stamping top plate (32) is provided with a plurality of small holes, and the small holes face the semicircular rubber shells (42) in arrangement respectively.
4. A pressing apparatus for powder metallurgy according to claim 3, wherein: the lifting rod (5) is arranged right below the semicircular rubber shell (42), the top of the lifting rod (5) is arranged in a spherical shape, a limiting spring (51) is fixedly connected to the bottom of the lifting rod (5), and one end, far away from the lifting rod (5), of the limiting spring (51) is fixedly connected with the inner wall of the bottom side of the base (1).
5. The pressing apparatus for powder metallurgy according to claim 4, wherein: a connecting spring (52) is fixedly connected to the middle shaft of the side wall of the lifting rod (5), and a connecting ball (53) is fixedly connected to one end, far away from the lifting rod (5), of the connecting spring (52).
6. The pressing apparatus for powder metallurgy according to claim 5, wherein: a vibration rod (6) is fixedly connected to the top middle shaft of the connecting ball (53), and one end, far away from the connecting ball (53), of the vibration rod (6) penetrates through the outer wall of the stamping top plate (32) in a sliding mode and extends to the outer side;
wherein, the extension part of the vibration rod (6) is arranged in a spherical shape, and the spherical arrangement part of the vibration rod (6) has elasticity.
7. The pressing apparatus for powder metallurgy according to claim 6, wherein: the connecting ball is characterized in that an L-shaped push rod (7) is fixedly connected to the middle shaft of the side wall of the connecting ball (53), one end, far away from the connecting ball (53), of the L-shaped push rod (7) is fixedly connected with an oval air bag (71), and the oval air bag (71) is arranged inside the outer wall of the top of the base (1).
8. The pressing apparatus for powder metallurgy according to claim 7, wherein: the side wall of the upper side of the elliptical air bag (71) is communicated with an auxiliary pipe (8), an air pressure push rod (81) is arranged in the auxiliary pipe (8) in a sliding mode, and the outer wall of the air pressure push rod (81) is in contact with the inner wall of the auxiliary pipe (8).
9. The pressing apparatus for powder metallurgy according to claim 8, wherein: atmospheric pressure push rod (81) slidable runs through auxiliary tube (8) and extends to the outside, the extension fixedly connected with arc collecting plate (82) of atmospheric pressure push rod (81), the bottom side outer wall of arc collecting plate (82) and the top contact setting of base (1), per two fixedly connected with extension spring (83) between arc collecting plate (82).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210792594.9A CN115156534A (en) | 2022-07-05 | 2022-07-05 | Stamping process and equipment for powder metallurgy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210792594.9A CN115156534A (en) | 2022-07-05 | 2022-07-05 | Stamping process and equipment for powder metallurgy |
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| CN115156534A true CN115156534A (en) | 2022-10-11 |
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| CN202210792594.9A Pending CN115156534A (en) | 2022-07-05 | 2022-07-05 | Stamping process and equipment for powder metallurgy |
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| CN212264529U (en) * | 2020-06-03 | 2021-01-01 | 荆州九菱科技股份有限公司 | Blank pressing device of iron core for automobile starter switch |
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| CN105950983A (en) * | 2016-07-18 | 2016-09-21 | 安徽奥泰粉末冶金有限公司 | Production method of powder metallurgy gear |
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Application publication date: 20221011 |