CN210359064U - Hot forging die lower die with internal cooling function - Google Patents
Hot forging die lower die with internal cooling function Download PDFInfo
- Publication number
- CN210359064U CN210359064U CN201920552796.XU CN201920552796U CN210359064U CN 210359064 U CN210359064 U CN 210359064U CN 201920552796 U CN201920552796 U CN 201920552796U CN 210359064 U CN210359064 U CN 210359064U
- Authority
- CN
- China
- Prior art keywords
- die
- cushion block
- cavity
- hole
- water inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Forging (AREA)
Abstract
The utility model discloses a forge hot mould lower mould with interior cooling function, including die carrier, die lip block mechanism, die fixed establishment of institution and cooling system down, die fixed establishment of institution surrounds around the die, and die lip block mechanism sets up between die and die carrier down, and cooling system introduces from the die carrier down, spouts between die lip block mechanism and the die from die lip block mechanism, cools off work piece and die lip block mechanism in die, the die. The utility model discloses the realization is given the die cooling by fixed internal cooling system, reaches the die and is in gushing the aquatic all the time, does not influence automation equipment's motion, avoids traditional dilatory hose, simultaneously, abundant, timely, high-efficient, comprehensive to the cooling of die.
Description
Technical Field
The utility model relates to a forge hot mould lower mould with interior cooling function belongs to forge hot cooling technical field.
Background
When the traditional hot forging is carried out, the die needs to be heated to about 200 ℃, graphite suspension is sprayed on the surface of the die for lubricating the die, and the residual graphite after evaporation plays a role of a lubricating medium at high temperature. The disadvantage of this lubrication method is that a large amount of graphite vapor is generated, which causes the pollution of workshop working environment. In the hot forging form of big water gaging, the mould does not need the heating, but needs timely cooling, keeps the mould to be in normal atmospheric temperature state in process of production, relies on remaining water on the mould surface to vaporize in the twinkling of an eye to become vapor when taking shape fast and lubricate, if cool off untimely, bonding phenomenon and the phenomenon that ejecting strength sharply increases can appear in mould and forging, great reduction the life-span of mould, can cause the unable shaping of product sometimes even, consequently, need lower mould internal cooling, go up mould internal cooling device and in time cool off.
SUMMERY OF THE UTILITY MODEL
In order to solve the existing problem, the utility model discloses a forge hot mould lower mould with interior cooling function and cooling method thereof, its concrete technical scheme as follows:
the utility model provides a forge hot mould lower mould with interior cooling function, includes die carrier, die lip block mechanism, die and die fixed establishment down, die fixed establishment surrounds around the die, and die lip block mechanism sets up between die and die carrier down. The cooling system is introduced from the lower die frame, is sprayed out from between the female die supporting cushion block mechanism and the female die, and cools the female die, a workpiece in the female die and the female die supporting cushion block mechanism, and the female die supporting cushion block mechanism are in eccentric positions in the female die fixing mechanism;
the lower die frame comprises a lower backing plate and a lower die plate, the lower die plate is fixed on the lower backing plate, the lower backing plate and the lower die plate are provided with coaxial through holes, lower T-shaped cushion blocks are arranged in the through holes, and push rod through holes are vertically formed in the lower T-shaped cushion blocks;
the cooling system comprises an inner water spraying push rod and a lower ejector rod, the inner water spraying push rod penetrates through a through hole of the lower T-shaped cushion block, an inner water spraying cavity is axially formed in the inner water spraying push rod, the lower end of the inner water spraying cavity is a blind end, the upper end of the inner water spraying cavity is an open end, a water inlet is formed in the side wall of the inner water spraying cavity, and the water inlet is communicated with the inner water spraying cavity.
Further, die lip block mechanism is including setting up No. two next cushion blocks and the next cushion block on T type cushion down, No. two cushion blocks are located the top of No. one next cushion block down, coaxial through-hole has been seted up to No. two next cushion blocks and next cushion block, be provided with the regulating block who hugs closely lower T type cushion block in the through-hole of No. one next cushion block.
Further, the female die comprises a female die inner layer and a female die outer layer which are in shrink fit, the female die is positioned on the lower second cushion block,
the die fixing mechanism comprises a die fastening ring, a lower die cavity and a die holder, the die fastening ring and the lower die cavity are all sleeved on the periphery of the die, the inner side of the periphery of the upper portion of the lower die cavity is provided with a concave groove, the die fastening ring is partially sunken in the concave groove, the die holder is arranged below the lower die cavity, and the die holder surrounds the die, a second lower cushion block and a next cushion block.
Furthermore, the middle part of the through hole of the lower T-shaped cushion block faces towards the expansion cavity which is expanded all around, the diameter of the expansion cavity is larger than that of the through hole, and the water inlet is positioned in the expansion cavity.
Further, the level is provided with interior water spray way piece in the lower bolster, and inhalant canal has been seted up at the center of interior water spray way piece, and inhalant canal one end is the opening end, and one end is the cecum, and open on cecum one side lateral wall has the inlet opening, installs the water supply connector in the inlet opening, and this opening end is facing to lower T type cushion, and the diversion passageway of intercommunication inhalant canal and enlarged cavity is seted up to lower T type cushion.
Furthermore, the center of the lower ejector rod is provided with a spray cavity, the lower end of the spray cavity is an open end, the upper end of the spray cavity is a blind end, flanges in butt joint with the adjusting block are arranged around the open end, the center of the adjusting block is provided with a center hole for communicating the spray cavity with the inner water spray cavity, the top of the lower ejector rod is located in a center through hole of the lower second cushion block, and the upper side wall of the lower ejector rod is provided with a plurality of water spray holes.
Furthermore, the diameter of the central through hole of the second lower cushion block is smaller than that of the central through hole of the first lower cushion block.
Furthermore, air holes are formed between the next cushion block and the next second cushion block and between the next cushion block and the lower T-shaped cushion block.
Furthermore, a side hole extending to the outside is formed in the side wall of the next cushion block.
Furthermore, the female die and the female die supporting cushion block mechanism are in eccentric positions in the female die fixing mechanism.
The utility model discloses realize the concrete process of die internal cooling method as follows:
the method comprises the following steps: mold closing state: at the moment, a forging piece is placed in the female die, the water inlet joint is communicated with the water inlet system, water is conveyed towards the water inlet joint, the water flows to the expansion cavity through the water inlet channel, the water fills the expansion cavity and enters the inner water spraying cavity from the water inlet of the inner water spraying push rod, the water level rises to the top of the lower ejector rod in the inner water spraying cavity and is sprayed out of the water spraying holes of the lower ejector rod, the periphery of the outer part of the lower ejector rod is filled with the water, and the water flows out of the side hole of the next cushion block;
step two: lifting the upper die: after the upper die is lifted, the pressure of the upper die on the lower die is reduced, the inner water spraying push rod, the adjusting block and the lower ejector rod synchronously move upwards, the adjusting block blocks the side hole of the next cushion block, the water inlet joint still conveys water towards the cooling system all the time, and the water is sprayed out of the water spraying hole of the lower ejector rod and then flows out of the air hole between the next cushion block and the next second cushion block;
step three: opening the mold: after the die is opened, the forged piece is transported away by the manipulator, at the moment, the water inlet joint is still in a water supply state and transports water towards a cooling system, and the water directly flows into a middle die cavity of the female die;
step four: blank loading: a blank is loaded into the female die by a manipulator, the blank extrudes redundant water in the female die, water in a through hole of the next cushion block is discharged from a side hole of the next cushion block, and a water inlet joint is still in a water supply state and conveys water towards a cooling system;
step five: moving the blank downwards: the slide block of the press machine continuously moves downwards to drive the blank to move downwards, the adjusting block blocks the side hole of the next cushion block, water in the through hole of the next cushion block is discharged from the air hole between the next cushion block and the lower T-shaped cushion block, and the water inlet joint is still in a water supply state and conveys water towards a cooling system;
step six: and (5) mold assembly again: the state of the cooling system is the same as step one.
The utility model has the advantages that:
the utility model discloses, the back is tak eoff away to the forging, and the cooling water is full of die cavity, and is abundant, timely, high-efficient, comprehensive to the cooling of die.
The utility model discloses, in the through-hole of next cushion in the cooling water is full of, No. two lower cushions, lower ejector pin is full of the cooling water all around, to the inside and the outside homoenergetic fully cooling of die lip block mechanism, realizes the effect that inside cooling and external cooling compromise.
The utility model discloses the realization is given the die cooling by fixed internal cooling system, reaches the die and is in gushing the aquatic all the time, does not influence automatic device's motion, avoids traditional dilatory hose.
Drawings
Figure 1 is a schematic structural view of the present invention,
FIG. 2 is a schematic view of the mold clamping state of the utility model when working with the upper mold,
FIG. 3 is a schematic view showing the slightly lifted state of the upper mold when the utility model is matched with the upper mold,
figure 4 is a schematic view of figure 3 after it has been raised,
figure 5 is a schematic view of the situation of figure 4 after continued lifting,
FIG. 6 is a schematic view showing the mold opening state of the present invention when it cooperates with the lower mold,
figure 7 is a schematic view of the hot forging of figure 6 after replacement with a new one,
figure 8 is a schematic view of the upper die of figure 7 after it has been lowered,
figure 9 is a schematic view of the upper mold of figure 8 moved to closed position,
list of reference numerals: 1-lower bolster, 2-lower bolster, 3-lower T type cushion block, 4-internal water spray push rod, 5-internal water spray cavity, 6-water inlet, 7-enlarged cavity, 8-water diversion channel, 9-internal water spray channel block, 10-water inlet hole, 11-water inlet joint, 12-regulating block, 13-flange, 14-lower ejector rod, 15-water spray hole, 16-hot forging piece, 17-female die inner layer, 18-female die outer layer, 19-female die fastening ring, 20-lower die chamber, 21-lower die holder, 22-lower second cushion block, 23-air hole, 24-next cushion block, 25-spray cavity, 26-side hole and 27-female die.
Detailed Description
The invention will be further elucidated with reference to the drawings and the detailed description. It should be understood that the following detailed description is illustrative of the invention only and is not intended to limit the scope of the invention.
Fig. 1 is the structure schematic diagram of the utility model, and it can be seen from the attached drawing that the utility model discloses a lower mould includes die carrier, lip block mechanism, die 27, die fixed establishment and cooling system.
The lower die frame comprises a lower base plate 1 and a lower die plate 2, the lower die plate 2 is fixed on the lower base plate 1, coaxial through holes are formed in the lower base plate 1 and the lower die plate 2, a lower T-shaped cushion block 3 is arranged in each through hole, and a push rod through hole is vertically formed in the lower T-shaped cushion block 3.
The supporting cushion block mechanism comprises a next cushion block 24 and a next cushion block 22 which are arranged on the lower T-shaped cushion block 3, the next cushion block 22 is located above the next cushion block 24, coaxial through holes are formed in the next cushion block 24 and the next cushion block 22, and an adjusting block 12 tightly attached to the lower T-shaped cushion block 3 is arranged in the through hole of the next cushion block 24.
The female die 27 comprises a female die inner layer 17 and a female die outer layer 18 which are in shrink fit, and the female die 27 is positioned on the lower second cushion block 22.
The female die fixing mechanism comprises a female die fastening ring 19, a lower die cavity 20 and a lower die base 21, the female die fastening ring 19 and the lower die cavity 20 are all sleeved on the periphery of a female die 27, the inner side of the periphery of the upper portion of the lower die cavity 20 is provided with a concave groove, the female die fastening ring 19 is partially sunken in the concave groove, the lower die base 21 is arranged below the lower die cavity 20, and the lower die base 21 surrounds the periphery of the female die 27, a lower second cushion block 22 and a next cushion block 24.
The cooling system comprises an inner water spray push rod 4 and a lower push rod 14, the inner water spray push rod 4 penetrates through a through hole of the lower T-shaped cushion block 3, an inner water spray cavity 5 is axially formed in the inner water spray push rod 4, the lower end of the inner water spray cavity 5 is a blind end, the upper end of the inner water spray cavity is an open end, a water inlet 6 is formed in the side wall of the inner water spray cavity 5, and the water inlet 6 is communicated with the inner water spray cavity 5. The middle part of the through hole of the lower T-shaped cushion block 3 faces the expanding cavity 7 which is expanded all around, the diameter of the expanding cavity 7 is larger than that of the through hole, and the water inlet 6 is positioned in the expanding cavity 7. The lower bolster 2 is interior level is provided with interior water spray way piece 9, and water inlet channel has been seted up at the center of interior water spray way piece 9, and water inlet channel one end is the opening end, and one end is the cecum, and open on cecum one side lateral wall has inlet opening 10, installs water supply connector 11 in the inlet opening 10, and this opening end is facing to lower T type cushion 3, and lower T type cushion 3 sets up the diversion passageway 8 that communicates water inlet channel and enlarged cavity 7. The center of the lower ejector rod 14 is provided with a spray cavity 25, the lower end of the spray cavity 25 is an open end, the upper end of the spray cavity is a blind end, the periphery of the open end is provided with a flange 13 butted with the adjusting block 12, the center of the adjusting block 12 is provided with a center hole communicated with the spray cavity 25 and the inner water spray cavity 5, the top of the lower ejector rod 14 is positioned in a center through hole of the lower second cushion block 22, and the upper side wall of the lower ejector rod 14 is provided with a plurality of water spray holes 15. The diameter of the central through hole of the lower second pad 22 is smaller than the diameter of the central through hole of the lower first pad 24. Air holes 23 are arranged between the next cushion block 24 and the next cushion block 22, and between the next cushion block 24 and the lower T-shaped cushion block 3. The side wall of the next cushion block 24 is provided with a side hole 26 extending to the outside.
The female die 27 and the supporting cushion block mechanism are also in eccentric positions in the female die fixing mechanism. The water passing through the air holes 23 flows out through the gap at the eccentric portion.
The application process of the present invention in practical production is explained with reference to fig. 7-9, and the internal cooling method of the hot forging die specifically comprises the following steps:
the method comprises the following steps: mold closing state: with reference to fig. 7, a hot forging piece 16 is placed in the female die, the press ram descends to a bottom dead center, the punch thermally forges the hot forging piece on the lower die, the punch is subjected to resistance of the hot forging piece to prevent the punch from descending, the descending stroke of the punch and the upper ejector rod is smaller than that of the punch support cushion block system and the punch sleeve, a water inlet channel connected to the cushion block is positioned below a horizontal water inlet groove of the upper ejector rod, the water inlet channel is blocked, at the moment, a water inlet joint is connected with a water inlet system and conveys water towards the water inlet joint, the water flows to the expansion cavity through the water inlet channel, the water fills the expansion cavity and enters the inner water spraying cavity from a water inlet of the inner water spraying push rod, the water level rises to the top of the lower ejector rod in the inner water spraying cavity and is sprayed out from the water spraying holes of the lower ejector rod, and the;
step two: slightly lifting the upper die: with reference to fig. 8, after the hot forging is completed, the upper die is slightly lifted upwards, the hot forged parts on the punch and the lower die are adhered, the punch is influenced by an adhesion force, the punch is still at the horizontal height during the hot forging in the process of lifting the upper die, or the speed of the punch moving upwards is smaller than the speed of the lifting of the upper die, at this time, the upper die frame is lifted, the punch sleeve is lifted synchronously, but the position of the punch is unchanged, or the lifting distance is smaller than the lifting distance of the access cushion block, finally, the water inlet channel is horizontally aligned with the horizontal water inlet groove of the upper ejector rod, water of a cold system in the punch enters the water through the punch water inlet joint into the water through cavity in the upper ejector rod and flows downwards to the cooling water channel of the punch and is sprayed out from the lower end of the cooling water channel in the punch, and;
step three: lifting the upper die: with reference to fig. 9, in the second step, the press ram continues to move upwards, the upper die continues to move upwards, the upper ejector rod continues to move upwards, the punch is thrown and adhered to the hot forging, the inner cooling system of the punch is consistent with the second step, at the moment, the inner water spraying push rod, the adjusting block and the lower ejector rod synchronously move upwards, the adjusting block blocks the side hole of the next cushion block, the water inlet joint of the female die still conveys water towards the inner cooling system of the lower die, and the water flows out of the air hole between the next cushion block and the next second cushion block after being sprayed out of the water spraying hole of the lower ejector rod;
step four: the upper die is continuously lifted: thirdly, continuously lifting the slide block of the press machine, separating the punch from the hot forging piece, continuously pressing the hot forging piece by the discharging rod, continuously ejecting the inner cooling system of the punch from the lower ejector rod, ejecting water in the inner cooling system of the lower die from the water spraying hole of the lower ejector rod, overflowing the water into the cavity of the female die to cool the surface of the cavity of the female die, and discharging the water through the air hole between the second cushion block and the first cushion block;
step five: opening the mold: when the slide block of the press reaches the top dead center, the hot forging piece is carried away by the mechanical arm, water sprayed by the inner cooling system of the lower die directly fills the cavity of the female die, and the inner cooling system of the punch is consistent with the second step;
step six: placing a blank hot forging piece: a blank hot forging piece is carried into a female die by a manipulator, a press slide block moves downwards, a horizontal water inlet groove of an upper ejector rod moves upwards and is blocked by an access cushion block, a punch inner cooling system stops working, the blank hot forging piece extrudes water in a female die cavity, a lower ejector rod moves downwards, the lower die inner cooling system is in a working state, and water below an adjusting block is discharged from a side hole of a next cushion block;
step seven: the upper die continues to descend: the upper die continues to descend, the blank hot forging presses the lower ejector rod and the adjusting block to continue moving downwards, the cooling system in the lower die is in a working state, the adjusting block blocks the side hole of the next cushion block, and water below the adjusting block is discharged from the air hole between the next cushion block and the lower T-shaped cushion block;
step eight: and (5) mold assembly again: and (5) when the slide block of the press reaches the bottom dead center, finishing the forming of the blank hot forging, and enabling the lower die inner cooling system and the punch inner cooling system to be consistent with the first step.
The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the technical means, but also comprises the technical scheme formed by the arbitrary combination of the technical characteristics.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (9)
1. A hot forging die lower die with an internal cooling function comprises a lower die frame, a die supporting cushion block mechanism, a die and a die fixing mechanism, wherein the die fixing mechanism surrounds the die;
the lower die frame comprises a lower backing plate and a lower die plate, the lower die plate is fixed on the lower backing plate, the lower backing plate and the lower die plate are provided with coaxial through holes, lower T-shaped cushion blocks are arranged in the through holes, and push rod through holes are vertically formed in the lower T-shaped cushion blocks;
the cooling system comprises an inner water spraying push rod and a lower ejector rod, the inner water spraying push rod penetrates through a through hole of the lower T-shaped cushion block, an inner water spraying cavity is axially formed in the inner water spraying push rod, the lower end of the inner water spraying cavity is a blind end, the upper end of the inner water spraying cavity is an open end, a water inlet is formed in the side wall of the inner water spraying cavity, and the water inlet is communicated with the inner water spraying cavity.
2. The lower hot-forging die with the internal cooling function according to claim 1, wherein the die supporting cushion block mechanism comprises a next cushion block and a next cushion block two, the next cushion block two is arranged on the next T-shaped cushion block, the next cushion block two is arranged above the next cushion block, the next cushion block and the next cushion block two are provided with coaxial through holes, and an adjusting block tightly attached to the next T-shaped cushion block is arranged in the through hole of the next cushion block.
3. A lower hot-forging die with an internal cooling function as claimed in claim 2, wherein the female die comprises a female die inner layer and a female die outer layer, the female die is positioned on the lower second cushion block,
the die fixing mechanism comprises a die fastening ring, a lower die cavity and a die holder, the die fastening ring and the lower die cavity are all sleeved on the periphery of the die, a concave groove is formed in the inner side of the periphery of the upper portion of the lower die cavity, the die fastening ring is partially sunken in the concave groove, the die holder is arranged below the lower die cavity, and the die holder surrounds the die, a second lower cushion block and a next cushion block.
4. A lower hot-forging die with an internal cooling function as claimed in claim 3, wherein the middle of the through hole of the lower T-shaped cushion block faces an enlarged cavity enlarged all around, the diameter of the enlarged cavity is larger than that of the through hole, and the water inlet is located in the enlarged cavity.
5. A lower hot-forging die with an internal cooling function as claimed in claim 1, wherein an internal water spraying channel block is horizontally arranged in the lower die plate, a water inlet channel is formed in the center of the internal water spraying channel block, one end of the water inlet channel is an open end, the other end of the water inlet channel is a blind end, a water inlet hole is formed in the side wall of one side of the blind end, a water inlet joint is installed in the water inlet hole, the open end faces the lower T-shaped cushion block, and a water diversion channel communicated with the water inlet channel and the expansion cavity is formed in the lower T-shaped cushion block.
6. The lower hot-forging die with the internal cooling function according to claim 1, wherein a spray cavity is formed in the center of the lower ejector rod, the lower end of the spray cavity is an open end, the upper end of the spray cavity is a blind end, a flange in butt joint with the adjusting block is arranged on the periphery of the open end, a central hole communicating the spray cavity with the internal water spray cavity is formed in the center of the adjusting block, the top of the lower ejector rod is located in a central through hole of the second lower cushion block, and a plurality of water spray holes are formed in the side wall of the upper portion of the lower ejector rod.
7. The lower hot die with internal cooling function as claimed in claim 2, wherein the center through hole diameter of the lower second pad is smaller than that of the next first pad.
8. The lower hot-forging die with the internal cooling function as claimed in claim 2, wherein air holes are formed between the next cushion block and the next second cushion block and between the next cushion block and the lower T-shaped cushion block.
9. A lower hot-forging die with an internal cooling function as claimed in claim 2, wherein the side wall of the next pad is provided with a side hole extending to the outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920552796.XU CN210359064U (en) | 2019-04-22 | 2019-04-22 | Hot forging die lower die with internal cooling function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920552796.XU CN210359064U (en) | 2019-04-22 | 2019-04-22 | Hot forging die lower die with internal cooling function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210359064U true CN210359064U (en) | 2020-04-21 |
Family
ID=70258569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920552796.XU Active CN210359064U (en) | 2019-04-22 | 2019-04-22 | Hot forging die lower die with internal cooling function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210359064U (en) |
-
2019
- 2019-04-22 CN CN201920552796.XU patent/CN210359064U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110026520B (en) | Hot forging die lower die with internal cooling function and cooling method thereof | |
| CN101332476B (en) | Precise extrusion molding method of thin wall long-pipe shaped parts bland and special mould | |
| CN101829698A (en) | Extrusion forming process of thin-wall long pipe-shaped part blank with flange and mould | |
| CN206229955U (en) | A kind of forged flange mould of easy mold release | |
| CN108838226B (en) | Hot back extrusion forming method for titanium alloy cup-shaped piece | |
| CN113102532B (en) | Labor-saving forming method suitable for large-size thin-wall conical shell | |
| CN103111571B (en) | Double-station hydraulic die forging machining system and machining process | |
| CN113523104B (en) | Rigid-flexible composite forming device and method for improving die attaching precision of deep concave bottom part | |
| CN213451964U (en) | Blank before three-piece type ball valve cover forging is rolled | |
| CN110014109B (en) | Hot forging die upper die with internal cooling function and cooling method thereof | |
| CN111112533B (en) | Hot forging die with internal cooling function and cooling method thereof | |
| CN111203503B (en) | Continuous upsetting blank making method for large-size large-height-diameter-ratio magnesium alloy cast rod | |
| CN210848165U (en) | Thin-wall cavity die for forging forming | |
| CN103706744A (en) | Petroleum drill rod joint horizontal die forging technology and die forging device | |
| CN107186160A (en) | The quiet step forming process of disk two of new-energy automotive air-conditioning compressor | |
| CN210359064U (en) | Hot forging die lower die with internal cooling function | |
| CN109986010B (en) | Hot forging die with internal cooling system and cooling method thereof | |
| CN106623856A (en) | Method and device for improving quality of squeezing and casting piston casting | |
| CN103084559A (en) | Forging method and forging device of twice forcing molten soup forging wheel | |
| CN101362157A (en) | Internal combustion engine piston step-by-step extrusion molding method and matching molding die | |
| CN208743597U (en) | A kind of hot pier molding die of hexagon-headed bolt | |
| CN209681051U (en) | Marine low speed diesel engine connecting rod point end die-forging forming device | |
| CN203155912U (en) | Double-station hydraulic die forging machining system | |
| CN210359065U (en) | Hot forging die upper die with internal cooling function | |
| CN109759470B (en) | One-time extrusion forming method for horizontal double-action combined die of double-flange middle body |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |