CN107186160A - The quiet step forming process of disk two of new-energy automotive air-conditioning compressor - Google Patents
The quiet step forming process of disk two of new-energy automotive air-conditioning compressor Download PDFInfo
- Publication number
- CN107186160A CN107186160A CN201710557670.7A CN201710557670A CN107186160A CN 107186160 A CN107186160 A CN 107186160A CN 201710557670 A CN201710557670 A CN 201710557670A CN 107186160 A CN107186160 A CN 107186160A
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- China
- Prior art keywords
- blank
- blocking
- finish
- forging
- disk
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/28—Making machine elements wheels; discs
- B21K1/32—Making machine elements wheels; discs discs, e.g. disc wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
- B21J1/06—Heating or cooling methods or arrangements specially adapted for performing forging or pressing operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
Abstract
The invention discloses a kind of quiet step forming process of disk two of new-energy automotive air-conditioning compressor, it is characterized in that after blanking and blank processing acquisition blank is completed, blank is placed in progress blocking base in Preform Die first, blank is configured to the blank with preset height blocking outer ring；Blank is placed in finish-forging die again, is quiet disk by back pressure extrusion molding.The present invention carries the blocking outer ring of certain altitude with prefabricated blank made from blocking, the guide effect of blocking outer ring is effectively utilized when finish-forging shapes, effectively increase the flowing velocity of outer ring metal, outer ring height is required with flatness satisfaction at the end of ensureing shaping, the present invention improves the mold use life-span, and part forming precision is high, intensity is big.
Description
Technical field
The present invention relates to metal forming field, more particularly for the quiet disk of new-energy automotive air-conditioning compressor
Manufacturing process and shaping dies.
Background technology
Scroll compressor has the advantages that compact conformation, efficient energy-saving, micro- shake low noise and reliable operation, is widely used in
The air-conditioning device of new-energy automobile, scroll plate is the core component of scroll compressor, is divided into Moving plate and quiet disk, its forming quality
Quality be directly connected to air conditioning for automobiles can normal work.
The quiet disk of traditional scroll plate does not have outer ring, and only highly consistent vortex is placed on base, sound disk phase interworking
Conjunction is placed in compression case body.Conventional processing method has gravitational casting, liquid forging, machining, low pressure casting and back pressure
Extruding etc..Wherein gravitational casting and liquid forging production efficiency is relatively low；It is machined not only low production efficiency, and material use
Rate is low, and cost is higher；Low pressure casting is also easy to produce the internal flaws such as stomata, and product rejection rate is high and product mechanical performance is poor；Base
The part shaped in the back pressure extrusion process of flow-controlled forming technology has good mechanical property, and production efficiency is high, material profit
High with rate, forming defects is few, the low advantage of product rejection rate, and the technology is widely used abroad, and the country is also begun to gradually
Using.
For the novel scroll disk of new-energy automobile, its quiet dribbling as shown in Figure 4 has with certain altitude and thickness
Quiet disk outer ring 32, the height for being in the vortex 31 at middle part is less than the height of quiet disk outer ring 32, is substituted and passed with the quiet disk outer ring 32
The compressor housing of system, realizes that quiet disk is integrated with compressor housing, can so greatly reduce the weight of compressor, more accord with
Close the requirement of energy-conserving and environment-protective.Because the height and thickness of quiet disk outer ring are all higher than the vortex body portion at middle part, one is extruded in back pressure
During secondary shaping, the vortex metal flow rates at middle part are fast, and quiet disk outer ring metal flow rates are slow, on the one hand cause quiet disk outer ring
Height be difficult to meet require, on the other hand after vortex Partial Height reaches requirement, metal initially forms overlap at this, leads
Cause finish-forging cavity plate vortex throughhole portions stress increased dramatically, easily occur fracture failure, this situation has had a strong impact on quiet disk
Forming quality and mass production.
The content of the invention
The present invention be for avoid present in above-mentioned prior art not enough there is provided a kind of new-energy automotive air-conditioning compressor is quiet
The step forming process of disk two, outer ring is highly difficult to ensure that during overcoming a counterpressure forming quiet disk is easily broken off lacking for failure with mould
Point, improves the mold use life-span, improves product shaping quality.
The present invention adopts the following technical scheme that to solve technical problem：
The characteristics of new-energy automotive air-conditioning compressor of the present invention quiet two step forming process of disk is：Complete blanking and blank processing
Obtain after blank, blank is placed in progress blocking base in Preform Die first, blank is configured to preset height blocking
The blank of outer ring；Blank is placed in finish-forging die again, is quiet disk by back pressure extrusion molding.
The characteristics of new-energy automotive air-conditioning compressor of the present invention quiet two step forming process of disk, lies also in：Under completing as follows
Material, blank processing and forging and stamping：
Step 1, blanking：Using rods and bars of aluminium alloy as raw material, using sawing machine blanking, the diameter of blank and quiet disk outer ring are obtained
(32) external diameter is equal, and the height of blank is determined according to constant-volume principle；
Step 2, blank processing：Blank is preheating to 200 DEG C first, the blank of preheating graphite is soaked into, then graphite will be soaked
Blank heating is to 450 DEG C and is incubated, and completes the processing of blank；
Step 3, blocking：The blank handled well is put into and is preheated to progress blocking base in 200 DEG C of Preform Die, by base
Material is configured to the blank with blocking outer ring, and the height of blocking outer ring is the 30% of the height of quiet disk outer ring；
Step 4, finish-forging：The blank with blocking outer ring is put into be preheated in 200 DEG C of finish-forging die and carried out, is led to
Back pressure extrusion molding is crossed for quiet disk.
The characteristics of new-energy automotive air-conditioning compressor of the present invention quiet two step forming process of disk, lies also in：The Preform Die be by
Blocking punch-pin is fixed on the bottom surface of blocking upper bolster using blocking punch-pin retainer plate, and blocking cavity plate is placed in blocking cavity plate lasso,
Blocking cavity plate cushion block is placed in the die cavity of blocking cavity plate, and blocking knockout rod runs through blocking die shoe and blocking cavity plate cushion block.
The characteristics of new-energy automotive air-conditioning compressor of the present invention quiet two step forming process of disk, lies also in：
Finish-forging mold in the finish-forging die is to be fixed on finish-forging punch-pin on finish-forging by finish-forging punch-pin retainer plate
The bottom surface of die holder；
Mould is placed in lower die-sleeve under finish-forging in the finish-forging die, and die sleeve pressing plate is provided with the top of lower die-sleeve, under
Finish-forging cavity plate in mould is placed in cavity plate lasso, and the cavity bottom of the finish-forging cavity plate is provided with spiral shape through hole, described
The shape of spiral through hole is consistent with the shape of quiet disk vortex part, and finish-forging cavity plate backing plate is located at finish-forging cavity plate and finish-forging die case
The bottom of circle；
The structure type for the back pressure apparatus being arranged in the finish-forging die is：Back pressure body is located at the type of the finish-forging cavity plate
In bottom of chamber portion spiral through hole, the bottom of back pressure body is provided with back pressure push rod, and back pressure push rod is placed in spring through finish-forging cavity plate backing plate
The top surface of pressing plate, the bottom surface of spring bearer plate is provided with ejector beam in T-shape；The disk spring is placed in spring spool, in institute
State and spring bearer plate is provided with the top of disk spring, spring bearer plate is placed in pressing plate lasso, set in the bottom of the disk spring
It is equipped with spring backing plate.
Compared with the prior art, the present invention has the beneficial effect that：
1st, the present invention is using first pre- forged blank, and the process that then finish-forging shapes again efficiently solves a back pressure
Mold stresses are excessive during extrusion molding, the shortcoming that mould is easily damaged, and substantially increase the mold use life-span；
2nd, the present invention carries the blocking outer ring of certain altitude with prefabricated blank made from blocking, is effectively utilized when finish-forging shapes
The guide effect of blocking outer ring, can improve the flowing velocity of outer ring metal, it is ensured that outer ring height and smooth at the end of shaping
Degree, which is met, to be required；
3rd, the present invention is when finish-forging shapes, and back pressure apparatus provides back pressure by disk spring, can effectively control quiet disk whirlpool
Revolve part metals and flow uneven phenomenon, it is ensured that the height of vortex part and flatness, which are met, at the end of shaping requires.
Brief description of the drawings
Fig. 1 is Preform Die schematic diagram in the present invention；
Fig. 2 is finish-forging die schematic diagram in the present invention；
Fig. 3 is pre- forging schematic diagram in the present invention；
Fig. 4 is quiet dish structure schematic diagram in the present invention；
Label in figure：1 blocking upper bolster；2 blocking punch-pin；3 blocking punch-pin retainer plates；4 blocking cavity plates；5 blocking die cases
Circle；6 blocking cavity plate cushion blocks；7 blocking ejector beams；8 blocking die shoes；9 finish-forging upper bolsters；10 finish-forging punch-pin；11 finish-forging punch-pin are consolidated
Fixed circle；12 guide pin bushings；13 guide pillars；14 finish-forging cavity plates；15 finish-forging cavity plate lassos；16 finish-forging cavity plate backing plates；17 pressing plate lassos；18 springs
Pressing plate；19 spring spools；20 finish-forging ejector beams；21 finish-forging die shoes；22 spring backing plates；23 disk springs；24 back pressure push rods；25
Back pressure body；26 lower die-sleeves；27 die sleeve pressing plates；28 knockout rods；29 expellers；30 blocking outer rings；31 vortexes；32 outer rings；33 bottoms
Seat.
Embodiment
The quiet step forming process of disk two of new-energy automotive air-conditioning compressor is obtained in completion blanking and blank processing in the present embodiment
Obtain after blank, blank is placed in progress blocking base in Preform Die first, blank is configured to outside with preset height blocking
The blank of circle；Blank is placed in finish-forging die again, is quiet disk by back pressure extrusion molding.Under specifically completing as follows
Material, blank processing and forging and stamping：
Step 1, blanking：Using rods and bars of aluminium alloy as raw material, using sawing machine blanking, the diameter of blank and quiet disk outer ring are obtained
External diameter is equal, and the height of blank is determined according to constant-volume principle.
Step 2, blank processing：Blank is preheating to 200 DEG C first, the blank of preheating graphite is soaked into, then graphite will be soaked
Blank heating is to 450 DEG C and is incubated, and completes the processing of blank.
Step 3, blocking：The blank handled well is put into and is preheated to progress blocking base in 200 DEG C of Preform Die, by base
Material is configured to the blank with blocking outer ring 30, and the height of blocking outer ring 30 is the 30% of the height of quiet disk outer ring 32.
Step 4, finish-forging：Blank with blocking outer ring 30 is put into be preheated in 200 DEG C of finish-forging die and carried out, is passed through
Back pressure extrusion molding is quiet disk.
As shown in figure 1, in the present embodiment Preform Die be blocking punch-pin 2 is fixed on using blocking punch-pin retainer plate 3 it is pre-
The bottom surface of upper bolster 1 is forged, blocking cavity plate 4 is placed in blocking cavity plate lasso 5, and blocking cavity plate cushion block 6 is placed in the die cavity of blocking cavity plate 4
In, blocking knockout rod 7 runs through blocking die shoe 8 and blocking cavity plate cushion block 6.
When blocking shapes, the blank handled well is put into blocking cavity plate 4, is placed on blocking cavity plate cushion block 6, blocking is convex
The descending extrusion billet of mould 2, metal is flowed up, the outer ring of anti-extrusion certain altitude, and after shaping terminates, blocking punch-pin 2 is up, in advance
Forging ejector beam 7 is ejected upwards under press hydraulic cylinder effect, and pre- forging is ejected to the die cavity of blocking cavity plate 4.
As shown in Fig. 2 the finish-forging mold in the present embodiment in finish-forging die is that finish-forging punch-pin 10 is passed through into finish-forging punch-pin
Retainer plate 11 is fixed on the bottom surface of finish-forging upper bolster 9；Running through in finish-forging punch-pin 10 has knockout rod 28, and has expeller 29 can
It is butted on knockout rod 28；Mould is placed in lower die-sleeve 26 under finish-forging in finish-forging die, and the top of lower die-sleeve 26 is provided with die sleeve pressure
Finish-forging cavity plate 14 in plate 27, lower mould is placed in cavity plate lasso 15, and the cavity bottom of finish-forging cavity plate 14, which is provided with spiral, to be led to
Hole, the shape of spiral through hole is consistent with the shape of the vortex in the middle part of quiet disk, and finish-forging cavity plate backing plate 16 is located at finish-forging cavity plate 14
With the bottom of finish-forging cavity plate lasso 15；The structure type for the back pressure apparatus being arranged in finish-forging die is：Back pressure body 25 is located at eventually
In the cavity bottom spiral through hole for forging cavity plate 14, the bottom of back pressure body 25 is provided with back pressure push rod 24, and back pressure push rod 24 is through eventually
Forging cavity plate backing plate 16 is placed in the top surface of spring bearer plate 18, and the bottom surface of spring bearer plate 18 is provided with ejector beam 20 in T-shape；Dish-shaped bullet
Spring 23 is placed in spring spool 19, and spring bearer plate 18 is set at the top of disk spring 23, and spring bearer plate 18 is placed in pressing plate lasso
In 17, spring backing plate 22 is provided with the bottom of disk spring 23, spring backing plate 22 is placed on finish-forging die shoe 21, under finish-forging
Guide pillar 13 is set on die holder 21, guide pin bushing 12 is set on finish-forging upper bolster 9, led using the cooperation of guide pin bushing 12 and guide pillar 13
To.
When finish-forging shapes, the metal flow rates of middle vortex part are more than the flowing velocity of outer ring metal, during blocking into
The outer ring that shape goes out has certain guide effect, can improve the flowing velocity of metal, and rational outer ring highly makes outer ring and whirlpool
Rotation body portion reaches forming height simultaneously substantially.The blank that blocking is obtained is put into finish-forging cavity plate 14, and finish-forging cavity plate 14 is descending
Extrusion blank, because blank diameter is less than the diameter of quiet seat 33 of trying to get to the heart of a matter, therefore a part of metal in blank bottom laterally flows during extruding
Dynamic shaping base 33, a part of metal, which flows downward, shapes vortex body portion and quiet disk outer ring.The metal flow of vortex body portion
Uneven, center section metal flow is very fast, the contact back pressure that takes the lead in body 25, and back pressure body 25 is downward by back pressure push rod 24 after being pressurized
Extrusion spring pressing plate 18, the forced compression of disk spring 23, so as to produce upward back pressure and act on the vortex portion of blank
Point, the height of the part of vortex 31 is gradually reached unanimity.Finish-forging cavity plate 14 and back pressure body 25 make outer ring form an inaccessible type
Chamber, the guiding metal of the outer ring with certain altitude that blocking is obtained flows downward, during the sand off of outer ring, vortex body portion also base
Originally predetermined altitude is reached, so that ensure that outer ring and vortex body portion reach object height, and also end face is smooth.Shaping terminates
Afterwards, finish-forging punch-pin 10 is moved upwards, if forging is stayed on finish-forging punch-pin 10, hydraulic cylinder acts on expeller 29, makes knockout rod 28
Move downward, forging is released, expeller 29 resets afterwards, knockout rod 28 returns to initial position in shaping next time；If forging
Stay in finish-forging cavity plate 14, finish-forging ejector beam 20 is ejected upwards in the presence of hydraulic cylinder, pass through spring bearer plate 18 and back pressure body
Forging is ejected finish-forging cavity plate 14 by 25, while disk spring 23 resets, discharges elastic force.
Claims (4)
1. the quiet step forming process of disk two of new-energy automotive air-conditioning compressor, it is characterized in that completing blanking and blank processing acquisition blank
Afterwards, blank is placed in progress blocking base in Preform Die first, blank is configured to the hair with preset height blocking outer ring
Base；Blank is placed in finish-forging die again, is quiet disk by back pressure extrusion molding.
2. the quiet step forming process of disk two of new-energy automotive air-conditioning compressor according to claim 1, it is characterized in that by following step
It is rapid to complete blanking, blank processing and forge and press：
Step 1, blanking：Using rods and bars of aluminium alloy as raw material, using sawing machine blanking, the diameter of blank and quiet disk outer ring (32) are obtained
External diameter is equal, and the height of blank is determined according to constant-volume principle；
Step 2, blank processing：Blank is preheating to 200 DEG C first, the blank of preheating is soaked into graphite, then the blank that will soak graphite
It is heated to 450 DEG C and is incubated, completes the processing of blank；
Step 3, blocking：The blank handled well is put into and is preheated in 200 DEG C of Preform Die progress blocking base, by blank into
Shape is the blank with blocking outer ring (30), and the height of blocking outer ring (30) is the 30% of the height of quiet disk outer ring (32)；
Step 4, finish-forging：The blank with blocking outer ring (30) is put into be preheated in 200 DEG C of finish-forging die and carried out, is led to
Back pressure extrusion molding is crossed for quiet disk.
3. the quiet step forming process of disk two of new-energy automotive air-conditioning compressor according to claim 1 or 2, it is characterized in that：It is described
Preform Die is the bottom surface that blocking punch-pin (2) is fixed on to blocking upper bolster (1) using blocking punch-pin retainer plate (3), and blocking is recessed
Mould (4) is placed in blocking cavity plate lasso (5), and blocking cavity plate cushion block (6) is placed in the die cavity of blocking cavity plate (4), blocking knockout rod
(7) blocking die shoe (8) and blocking cavity plate cushion block (6) are run through.
4. the quiet step forming process of disk two of new-energy automotive air-conditioning compressor according to claim 1 or 2, it is characterized in that：
Finish-forging mold in the finish-forging die is that by finish-forging punch-pin retainer plate (11) finish-forging punch-pin (10) is fixed on into end
Forge the bottom surface of upper bolster (9)；
Mould is placed in lower die-sleeve (26) under finish-forging in the finish-forging die, and die sleeve pressing plate is provided with the top of lower die-sleeve (26)
(27), the finish-forging cavity plate (14) in lower mould is placed in cavity plate lasso (15), is set in the cavity bottom of the finish-forging cavity plate (14)
Spiral shape through hole is equipped with, the shape of the spiral through hole is consistent with the shape of quiet disk vortex part, finish-forging cavity plate backing plate (16)
Positioned at the bottom of finish-forging cavity plate (14) and finish-forging cavity plate lasso (15)；
The structure type for the back pressure apparatus being arranged in the finish-forging die is：Back pressure body (25) is located at the finish-forging cavity plate (14)
Cavity bottom spiral through hole in, the bottom of back pressure body (25) is provided with back pressure push rod (24), and back pressure push rod (24) runs through finish-forging
Cavity plate backing plate (16) is placed in the top surface of spring bearer plate (18), and the bottom surface of spring bearer plate (18) is provided with ejector beam (20) in T-shape；
The disk spring (23) is placed in spring spool (19), and spring bearer plate is provided with the top of the disk spring (23)
(18), spring bearer plate (18) is placed in pressing plate lasso (17), and the bottom of the disk spring (23) is provided with spring backing plate
(22)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710557670.7A CN107186160B (en) | 2017-07-10 | 2017-07-10 | The quiet two step forming process of disk of new-energy automotive air-conditioning compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710557670.7A CN107186160B (en) | 2017-07-10 | 2017-07-10 | The quiet two step forming process of disk of new-energy automotive air-conditioning compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107186160A true CN107186160A (en) | 2017-09-22 |
| CN107186160B CN107186160B (en) | 2019-06-18 |
Family
ID=59882683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710557670.7A Active CN107186160B (en) | 2017-07-10 | 2017-07-10 | The quiet two step forming process of disk of new-energy automotive air-conditioning compressor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108580777A (en) * | 2018-04-28 | 2018-09-28 | 东莞市天红精密五金科技有限公司 | The quiet disk forging mold of vortex cold compressor |
| CN110303111A (en) * | 2019-07-10 | 2019-10-08 | 安徽安簧机械股份有限公司 | A kind of liftout attachment suitable for steel piston automation closed-die forging |
| CN113399614A (en) * | 2021-06-09 | 2021-09-17 | 合肥工业大学 | Forming die and method for bilateral scroll static plate of air-conditioning compressor |
| CN113798418A (en) * | 2021-08-29 | 2021-12-17 | 湖北三环锻造有限公司 | Method for improving forging quality of steering knuckle disk part |
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| JP2009052464A (en) * | 2007-08-27 | 2009-03-12 | Panasonic Corp | Scroll compressor |
| CN103447338A (en) * | 2013-07-31 | 2013-12-18 | 霍山汇能汽车零部件制造有限公司 | Backward extrusion die and technique for processing helical body by applying backward extrusion die |
| CN103537500A (en) * | 2013-10-24 | 2014-01-29 | 河南科技大学 | Extrusion and molding method for cup-shaped part and special extrusion die |
| CN106077381A (en) * | 2016-06-12 | 2016-11-09 | 浙江百达精工股份有限公司 | The preparation method of scroll compressor fixed scroll and scroll compressor fixed scroll |
| CN106583619A (en) * | 2016-12-16 | 2017-04-26 | 合肥工业大学 | Accurate forming die structure for stator disc of air conditioner compressor of new energy automobile |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009052464A (en) * | 2007-08-27 | 2009-03-12 | Panasonic Corp | Scroll compressor |
| CN103447338A (en) * | 2013-07-31 | 2013-12-18 | 霍山汇能汽车零部件制造有限公司 | Backward extrusion die and technique for processing helical body by applying backward extrusion die |
| CN103537500A (en) * | 2013-10-24 | 2014-01-29 | 河南科技大学 | Extrusion and molding method for cup-shaped part and special extrusion die |
| CN106077381A (en) * | 2016-06-12 | 2016-11-09 | 浙江百达精工股份有限公司 | The preparation method of scroll compressor fixed scroll and scroll compressor fixed scroll |
| CN106583619A (en) * | 2016-12-16 | 2017-04-26 | 合肥工业大学 | Accurate forming die structure for stator disc of air conditioner compressor of new energy automobile |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108580777A (en) * | 2018-04-28 | 2018-09-28 | 东莞市天红精密五金科技有限公司 | The quiet disk forging mold of vortex cold compressor |
| CN110303111A (en) * | 2019-07-10 | 2019-10-08 | 安徽安簧机械股份有限公司 | A kind of liftout attachment suitable for steel piston automation closed-die forging |
| CN113399614A (en) * | 2021-06-09 | 2021-09-17 | 合肥工业大学 | Forming die and method for bilateral scroll static plate of air-conditioning compressor |
| CN113798418A (en) * | 2021-08-29 | 2021-12-17 | 湖北三环锻造有限公司 | Method for improving forging quality of steering knuckle disk part |
| CN113798418B (en) * | 2021-08-29 | 2023-12-08 | 湖北三环锻造有限公司 | Method for improving forging quality of steering knuckle disc part |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107186160B (en) | 2019-06-18 |
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