CN107268722A - The production equipment and production method of a kind of diaphragm-type air-compressed tank, diaphragm-type air-compressed tank - Google Patents
The production equipment and production method of a kind of diaphragm-type air-compressed tank, diaphragm-type air-compressed tank Download PDFInfo
- Publication number
- CN107268722A CN107268722A CN201710417888.2A CN201710417888A CN107268722A CN 107268722 A CN107268722 A CN 107268722A CN 201710417888 A CN201710417888 A CN 201710417888A CN 107268722 A CN107268722 A CN 107268722A
- Authority
- CN
- China
- Prior art keywords
- tank body
- tank
- diaphragm
- type air
- mould
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 38
- 239000000463 material Substances 0.000 claims abstract description 39
- 238000003466 welding Methods 0.000 claims abstract description 15
- 238000005096 rolling process Methods 0.000 claims description 14
- 238000003825 pressing Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 7
- 230000001360 synchronised effect Effects 0.000 claims description 6
- 230000007423 decrease Effects 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 abstract description 5
- 239000002893 slag Substances 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 abstract description 3
- 238000007493 shaping process Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B11/00—Arrangements or adaptations of tanks for water supply
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D13/00—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form
- B21D13/02—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form by pressing
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B11/00—Arrangements or adaptations of tanks for water supply
- E03B2011/005—Tanks with two or more separate compartments divided by, e.g. a flexible membrane
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
- Diaphragms And Bellows (AREA)
Abstract
The invention discloses a kind of diaphragm-type air-compressed tank, production equipment and production method.It is included respectively by the integrally formed upper half tank body of circular sheet material and lower half tank body, two halves tank body is respectively provided with the curved surface blind end at top and the openend of bottom, the curved surface blind end of two halves tank body offers the connector for mounting flange, the openend of wherein half tank body is provided with necking, and welding forms whole diaphragm-type air-compressed tank after the necking of half of tank body is inserted into the openend of other half tank body.Its advantage is：An only cross weld, its production technology very simple, weld seam is few, not only tank intensity performance is guaranteed, carrying out flaw detection link is few, the pressure-resistant performance of container has obtained reliable guarantee, two halves tank body effectively reduces the welding slag of tank interior by way of necking grafting is welded, not only, and improves the intensity of welding and ensure that reliable performance, also very high resistance to pressure request has been reached in practical application, has been had good value for applications.
Description
Technical field
The present invention relates to a kind of production technology of diaphragm-type air-compressed tank, specifically a kind of diaphragm-type air-compressed tank, barrier film
The production equipment and production method of formula air pressure tank.
Background technology
It is well known that existing diaphragm-type air-compressed tank is by superposed hemispherical epimere, the tubular knot positioned at middle part
Between the stage casing of structure and the hemispherical part of hypomere three composition positioned at bottom, three parts one is formed by being welded and fixed
Diaphragm-type air-compressed tank is overall, and traditional this structure is during the manufacturing, it is necessary first to by former to epimere and
Hypomere is molded, and to edge deletion excess stock formation hemispherical configuration after shaping, is then wound into cylinder by one block of sheet material
Tube structure is welded into after shape, full circle, finally again welds three parts successively, it can be seen that, existing this manufacturer
Method production technology during the manufacturing is more complicated, and three long weld seams of weld seam also compare many, not only cause tank intensity
It can be affected, and carrying out flaw detection link is more, and the pressure-resistant performance to container is not easy to ensure, in addition, after welding, easily making tank
There is welding slag in internal portion, later in order to avoid welding slag, also has using lined structure, but this structure is while welding slag is reduced
But so that technique is sufficiently complex, cost is high.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of weld seam is few, simple production process and the high barrier film of pressure-resistant performance
The production equipment and production method of formula air pressure tank, diaphragm-type air-compressed tank.
In order to solve the above-mentioned technical problem, diaphragm-type air-compressed tank of the invention, including be integrally formed respectively by circular sheet material
Upper half tank body and lower half tank body, two halves tank body be respectively provided with top curved surface blind end and bottom openend, two halves tank body
Curved surface blind end offers the connector for mounting flange, and the openend of wherein half tank body is provided with necking, and this is half
Welding forms whole diaphragm-type air-compressed tank after the necking of tank body is inserted into the openend of other half tank body.
The curved surface blind end of tank body described in two halves is provided with necking down.
The thickness of the diaphragm-type air-compressed tank is 3 more than mm, a diameter of 400-1200mm.
A kind of production equipment for producing above-mentioned diaphragm-type air-compressed tank, including be adapted with upper and lower half of tank body contour shape
Mould, the pressing device that is arranged on above mould and the guide holder positioned at mould side, the bottom of the mould is provided with
For the rotary power unit for driving mould to rotate, the bottom of the pressing device is provided with pressure bearing, the top of the mould
Portion is placed with the circular sheet material being molded for tank body, and the circular sheet material can be pressed on mould by the pressure bearing of pressing device
Tool top and by the driving of rotary power unit with mould synchronous rotary, being provided with the guide holder can be in guide holder
By lifting drive drive above and below the movable stand that is vertically moved up or down, be provided with and can be driven by lateral dynamics device on the movable stand
The dynamic rolling component moved horizontally, the rolling component can be rolled along the contour shape of mould to the circular sheet material of rotation
It is molded.
The pressing device is hydraulic cylinder, the expansion link connection bearing of the hydraulic cylinder, the rotary power unit, lifting
Drive device and lateral driver device are motor, and leading screw and nut mechanism, the screw mandrel are provided with the movable stand
Nut body is driven by lateral dynamics device.
The height of the movable stand is higher than the height of mould.
A kind of diaphragm-type air-compressed tank production method using above-mentioned production equipment, comprises the following steps：
A, sheet material is cut to the sheet material to be processed to form circle, the top that sheet material to be processed is placed on into mould 1, which passes through to compress, to be filled
The pressure bearing put is pressed on die top；
B, driving rotating driving device make sheet material to be processed with mould synchronous rotary, at the same time, are driven by lifting drive
Dynamic movable stand declines, and the sheet material that rolling component touch rotates is driven by lateral driver device；
C, in forming process, by the decline of movable stand, rolling component push and the rotation of mould makes the sheet material of rotation
Form half of tank body being adapted with mold profile shape；
D, it is made after half of tank body and changes sheet material repeat step A-C and make other half of tank body, forms upper half tank body and lower half tank
After body, upper half tank body and lower half tank body pairing are welded and to form complete diaphragm-type air-compressed tank.
The center of sheet material to be processed in the step A is open, the opening is used as flange connector.
The advantage of the invention is that：
Upper half tank body and lower half tank body respectively by one piece of circular plate forming, if by two halves tank body welding, formation every
Membrane type air pressure tank only have above and below two parts constitute, only one cross weld, it is no longer necessary to two hemisphere faces in tradition with
Cylinder is welded respectively also no longer to be needed to carry out shaping shearing, processing and making process to hemisphere face by other formers
In, if by the decline of movable stand, rolling component push and the rotation of mould just can be formed the sheet deformation of rotation
Half of tank body, then by two halves tank body welding, its production technology very simple, weld seam is few, not only causes tank intensity performance
It is guaranteed, and carrying out flaw detection link is few, and the pressure-resistant performance of container has obtained reliable guarantee, in addition, two halves tank body is logical
The mode of necking grafting welding is crossed, the welding slag of tank interior is not only effectively reduced, and improve intensity and the guarantee of welding
Very high resistance to pressure request has also been reached in reliable performance, practical application, has been had good value for applications.
Brief description of the drawings
Fig. 1 is a kind of structural representation of diaphragm-type air-compressed tank of the invention；
Fig. 2 is the structural representation of another diaphragm-type air-compressed tank of the invention；
Fig. 3 is a kind of structural representation of diaphragm-type air-compressed tank production equipment in the present invention；
Fig. 4 is the structural representation of another diaphragm-type air-compressed tank production equipment in the present invention.
Embodiment
With reference to the accompanying drawings and detailed description, to the production of diaphragm-type air-compressed tank, diaphragm-type air-compressed tank of the invention
Equipment and production method are described in further detail.
Embodiment one：
As illustrated, the diaphragm-type air-compressed tank of the present invention, including respectively by integrally formed upper half of the tank body 1 of circular sheet material with
Half of tank body 2, upper half of tank body 1 and lower half of tank body 2 are respectively provided with the curved surface blind end at top and the openend 3 of bottom, upper half
The curved surface blind end of individual tank body 1 and lower half of tank body 2 offers the connector 4 for mounting flange, wherein half tank body
Openend is provided with necking 5, and welding forms whole after the necking of half of tank body is inserted into the openend of other half tank body
Diaphragm-type air-compressed tank, its thickness is 3 more than mm, a diameter of 400-1200mm.
Embodiment two：
Diaphragm pneumatic jar structure and embodiment one in the present embodiment is essentially identical, and its difference is, two halves tank body
Curved surface blind end is provided with the structure of necking down 6 as shown in Figure 2, thus form the diaphragm-type air-compressed tank with necking down structure.
As shown in Figure 3, Figure 4, a kind of production equipment of the septation formula air pressure tank of production example one or embodiment two, including
The mould 7 being adapted with upper and lower half of tank body contour shape, the pressing device 8 that is arranged on above mould and positioned at mould one
The guide holder 9 of side, wherein, when the diaphragm-type air-compressed tank in production example one, the outline of mould 7 is set to and embodiment
The shape of half of tank body is adapted in one, so that the tank body of final molding does not have necking down, when in production example two every
During membrane type air pressure tank, the outline of mould 7 is set to be adapted with the shape of half of tank body in embodiment two, so that finally
The tank body of shaping has necking down, and the bottom of mould 7 is provided with the rotary power unit 10 for driving mould to rotate, rotary power
The top of device 10 is provided with mounting seat, and mould 7 is fixedly mounted in mounting seat, and the bottom of pressing device 8 is provided with pressure axis
11 are held, the top of mould 7 is placed with the circular sheet material 12 being molded for tank body, circular sheet material 12 can pass through pressing device 8
Pressure bearing is pressed on die top and by the driving of rotary power unit with mould synchronous rotary, is provided with guide holder 9
Can in guide holder by lifting drive drive above and below the movable stand 13 that is vertically moved up or down, specifically installed in guide holder 9
There is vertical guide rail, movable stand 13 is provided with by lifting drive driving on guide rail on vertical lifting, movable stand 13 can
The rolling component 14 moved horizontally is driven by lateral dynamics device, rolling component 14 can be along the contour shape of mould 1 to rotation
The circular sheet material 12 turned carries out roll forming.
Wherein, described pressing device 8 is hydraulic cylinder, the expansion link connection bearing 11 of hydraulic cylinder, rotary power unit, liter
It is to be provided with leading screw and nut mechanism, feed screw nut in motor, movable stand 13 to drop drive device and lateral driver device
Mechanism is driven by lateral dynamics device, and the height of movable stand 13 is higher than the height of mould 7, using the diaphragm-type air-compressed tank of the present invention
Production equipment production diaphragm-type air-compressed tank thickness be 3 more than mm, diameter is between 400-1200mm.
A kind of diaphragm-type air-compressed tank production method using above-mentioned production equipment, comprises the following steps：
A, sheet material is cut to the sheet material to be processed to form circle, the top that sheet material to be processed is placed on into mould 1, which passes through to compress, to be filled
The pressure bearing for putting 2 is pressed on die top；
B, driving rotating driving device make sheet material to be processed with the synchronous rotary of mould 1, at the same time, are driven by lifting drive
Dynamic movable stand declines, and the sheet material of the rolling contact rotation of component 8 is driven by lateral driver device；
C, in forming process, by the decline of movable stand, rolling component 14 push and the rotation of mould makes the plate of rotation
Half of tank body that material formation is adapted with mold profile shape；In its specific work process, mould is driven by rotating driving device
Rotation, movable stand is moved up and down by lifting drive driving, and the nip drum in rolling component 14 makes it in sheet material rotary course
Profile of the reinforcing face along mould presses downwards, finally causes circular sheet deformation；
D, it is made after half of tank body and changes sheet material repeat step A-C and make other half of tank body, forms upper half tank body and lower half tank
After body, upper half tank body and lower half tank body pairing are welded and to form complete diaphragm-type air-compressed tank.
Furthermore it is also possible to be open to the center of sheet material to be processed in step A, the opening is used as flange connector.
Claims (8)
1. a kind of diaphragm-type air-compressed tank, it is characterised in that：Including respectively by the integrally formed upper half tank body of circular sheet material（1）With under
Half tank body（2）, tank body described in two halves be respectively provided with top curved surface blind end and bottom openend（3）, tank body described in two halves
Curved surface blind end offers the connector for mounting flange（4）, the openend of wherein half tank body is provided with necking（5）,
Welding forms whole diaphragm-type air-compressed tank after the necking of half of tank body is inserted into the openend of other half tank body.
2. according to the diaphragm-type air-compressed tank described in claim 1, it is characterised in that：The curved surface blind end of tank body described in two halves is set
There is necking down（6）.
3. according to the diaphragm-type air-compressed tank described in claim 1 or 2, it is characterised in that：The thickness of the diaphragm-type air-compressed tank is 3
More than mm, a diameter of 400-1200mm.
4. a kind of production equipment for producing diaphragm-type air-compressed tank as claimed in claim 3, including with upper and lower half of tank body wheel profile
The adaptable mould of shape（7）, the pressing device that is arranged on above mould（8）And the guide holder positioned at mould side（9）, it is described
Mould（7）Bottom be provided with for drive mould rotate rotary power unit（10）, the pressing device（8）Bottom set
It is equipped with pressure bearing（11）, the mould（7）Top be placed with for tank body be molded circular sheet material（12）, the circular slab
Material（12）Pressing device can be passed through（8）Pressure bearing be pressed on die top and by the driving of rotary power unit with mould
Have synchronous rotary, the guide holder（9）Inside be provided with can in guide holder by lifting drive drive above and below be vertically moved up or down
Movable stand（13）, the movable stand（13）On be provided with and the rolling component that move horizontally can be driven by lateral dynamics device
（14）, the rolling component（14）Can be along mould（1）Contour shape to the circular sheet material of rotation（12）It is rolled into
Type.
5. according to diaphragm-type air-compressed tank production equipment described in claim 4, it is characterised in that：The pressing device（8）For hydraulic pressure
Cylinder, the expansion link connection bearing of the hydraulic cylinder（11）, the rotary power unit, lifting drive and laterally driven dress
It is motor to put, the movable stand（13）Leading screw and nut mechanism is inside provided with, the leading screw and nut mechanism is by lateral dynamics
Device drives.
6. according to diaphragm-type air-compressed tank production equipment described in claim 5, it is characterised in that：The movable stand（13）Height it is high
In mould（7）Height.
7. a kind of diaphragm-type air-compressed tank production method using production equipment as claimed in claim 6, it is characterised in that including with
Lower step：
A, sheet material is cut to the sheet material to be processed to form circle, sheet material to be processed is placed on mould（1）Top pass through compress
Device（2）Pressure bearing be pressed on die top；
B, driving rotating driving device make sheet material to be processed with mould（1）Synchronous rotary, at the same time, passes through lifting drive
Drive movable stand to decline, pass through lateral driver device driving rolling component（8）Contact the sheet material of rotation；
C, in forming process, pass through the decline of movable stand, rolling component（14）Push and the rotation of mould makes rotation
Half of tank body that sheet material formation is adapted with mold profile shape；
D, it is made after half of tank body and changes sheet material repeat step A-C and make other half of tank body, forms upper half tank body and lower half tank
After body, upper half tank body and lower half tank body pairing are welded and to form complete diaphragm-type air-compressed tank.
8. according to the diaphragm-type air-compressed tank production method described in claim 7, it is characterised in that：To be processed in the step A
The center of sheet material is open, and the opening is used as flange connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710417888.2A CN107268722A (en) | 2017-06-06 | 2017-06-06 | The production equipment and production method of a kind of diaphragm-type air-compressed tank, diaphragm-type air-compressed tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710417888.2A CN107268722A (en) | 2017-06-06 | 2017-06-06 | The production equipment and production method of a kind of diaphragm-type air-compressed tank, diaphragm-type air-compressed tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107268722A true CN107268722A (en) | 2017-10-20 |
Family
ID=60064378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710417888.2A Pending CN107268722A (en) | 2017-06-06 | 2017-06-06 | The production equipment and production method of a kind of diaphragm-type air-compressed tank, diaphragm-type air-compressed tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107268722A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109262854A (en) * | 2018-08-23 | 2019-01-25 | 南京柯瑞特种陶瓷股份有限公司 | Ceramic honey comb excircle processing lathe |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3035614A (en) * | 1959-11-04 | 1962-05-22 | Jr Chester H Kirk | Expansion tank |
| CN1075435A (en) * | 1992-02-17 | 1993-08-25 | 董恒贞 | Processing method for curved shell plate |
| CN101948038A (en) * | 2010-09-30 | 2011-01-19 | 冀州市中意复合材料有限公司 | Glass fiber reinforced plastics twin-wall oil tank, preparation method and special mould thereof |
| CN102233371A (en) * | 2011-04-13 | 2011-11-09 | 常州市天龙光电设备有限公司 | Plate bending device |
| CN202954401U (en) * | 2012-10-13 | 2013-05-29 | 温岭市联华机械有限公司 | Diaphragm-type expansion tank |
| CN203613605U (en) * | 2013-12-19 | 2014-05-28 | 台州天扬机电有限公司 | Plastic steeling pressure tank |
| CN104475525A (en) * | 2014-11-04 | 2015-04-01 | 浙江风驰机械有限公司 | Manufacturing method of internal-extrusion and external-spinning type steel ring rim |
| CN207017356U (en) * | 2017-06-06 | 2018-02-16 | 丹阳市云孚科技有限公司 | A kind of production equipment of diaphragm-type air-compressed tank, diaphragm-type air-compressed tank |
-
2017
- 2017-06-06 CN CN201710417888.2A patent/CN107268722A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3035614A (en) * | 1959-11-04 | 1962-05-22 | Jr Chester H Kirk | Expansion tank |
| CN1075435A (en) * | 1992-02-17 | 1993-08-25 | 董恒贞 | Processing method for curved shell plate |
| CN101948038A (en) * | 2010-09-30 | 2011-01-19 | 冀州市中意复合材料有限公司 | Glass fiber reinforced plastics twin-wall oil tank, preparation method and special mould thereof |
| CN102233371A (en) * | 2011-04-13 | 2011-11-09 | 常州市天龙光电设备有限公司 | Plate bending device |
| CN202954401U (en) * | 2012-10-13 | 2013-05-29 | 温岭市联华机械有限公司 | Diaphragm-type expansion tank |
| CN203613605U (en) * | 2013-12-19 | 2014-05-28 | 台州天扬机电有限公司 | Plastic steeling pressure tank |
| CN104475525A (en) * | 2014-11-04 | 2015-04-01 | 浙江风驰机械有限公司 | Manufacturing method of internal-extrusion and external-spinning type steel ring rim |
| CN207017356U (en) * | 2017-06-06 | 2018-02-16 | 丹阳市云孚科技有限公司 | A kind of production equipment of diaphragm-type air-compressed tank, diaphragm-type air-compressed tank |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109262854A (en) * | 2018-08-23 | 2019-01-25 | 南京柯瑞特种陶瓷股份有限公司 | Ceramic honey comb excircle processing lathe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3184185A1 (en) | Integrated plate welded-joint-free vehicle wheel and forming method thereof | |
| CN104810992B (en) | Stator core automatic production line | |
| CN102581051B (en) | Cold extrusion forming method for lute hole of axle housing of automobile drive axle and pressing die forming machine tool | |
| US1654647A (en) | Method of making hollow articles | |
| CN104191906B (en) | Integral type shaped steel no-welding-seam wheel and forming method thereof | |
| CN201002112Y (en) | Steel pipe seaming machine | |
| CN106623633A (en) | Auto door seal strip guide slot stretch-bending mould | |
| CN108655244A (en) | A kind of flexible spinning manufacturing method of integrated wheel | |
| CN207017356U (en) | A kind of production equipment of diaphragm-type air-compressed tank, diaphragm-type air-compressed tank | |
| CN111922654A (en) | Preparation method of GH4169 alloy special-shaped ring blank with flange and forming die thereof | |
| CN108555048A (en) | A kind of reflectal rim for automobile wheel extrusion forming method | |
| CN107268722A (en) | The production equipment and production method of a kind of diaphragm-type air-compressed tank, diaphragm-type air-compressed tank | |
| CN111112453A (en) | Integral forming method for bottom head of large-scale storage tank with high depth-diameter ratio | |
| CN109174970A (en) | A kind of roll-forming method and device of the metal abnormity variable cross-section tubing based on hydroforming | |
| CN110576116A (en) | Forming process of rotary opening cover of beer can | |
| CN206326378U (en) | A kind of Silencing tube material forming production line | |
| CN104826937A (en) | Tailcone forming mould and forming method of tailcone forming mould | |
| CN211222145U (en) | Turn-up forming equipment and three-drum forming machine | |
| CN107803423A (en) | A kind of shaped structure and manufacturing process for manufacturing lightweight automobile rim | |
| CN107116961A (en) | A kind of back-up ring welded type has tyre tube wheel and its manufacture method | |
| CN116511327A (en) | Thin-wall conical tube forming die with flanging characteristic and method | |
| CN206854491U (en) | A kind of empty contracting machine | |
| CN205949600U (en) | Double bend compound shaper that expands of passing through many hands or places of upsetting side by side | |
| CN107443018A (en) | A kind of pressure volume pot production equipment and production method | |
| CN110369594B (en) | Forming method for manufacturing integral rear axle housing part |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171020 |
|
| RJ01 | Rejection of invention patent application after publication |