CN105772936B - A kind of method that copper bearing band is prepared using agitating friction weldering - Google Patents
A kind of method that copper bearing band is prepared using agitating friction weldering Download PDFInfo
- Publication number
- CN105772936B CN105772936B CN201610343937.8A CN201610343937A CN105772936B CN 105772936 B CN105772936 B CN 105772936B CN 201610343937 A CN201610343937 A CN 201610343937A CN 105772936 B CN105772936 B CN 105772936B
- Authority
- CN
- China
- Prior art keywords
- welding
- copper
- bearing band
- agitating friction
- prepared
- 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
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 239000010949 copper Substances 0.000 title claims abstract description 39
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000003466 welding Methods 0.000 claims abstract description 58
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 238000003756 stirring Methods 0.000 claims abstract description 6
- 238000002360 preparation method Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 18
- 229910052742 iron Inorganic materials 0.000 abstract description 9
- 229910000881 Cu alloy Inorganic materials 0.000 abstract description 6
- 238000005253 cladding Methods 0.000 abstract description 6
- 238000011109 contamination Methods 0.000 abstract description 4
- 238000005336 cracking Methods 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 4
- 239000011159 matrix material Substances 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000002360 explosive Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/18—Dissimilar materials
- B23K2103/22—Ferrous alloys and copper or alloys thereof
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
A kind of method that copper bearing band is prepared using agitating friction weldering, to solve copper bearing band prepared by existing overlaying method, when iron enters copper alloy overlay cladding, great stress concentration and serious contamination cracking defect can be caused in copper alloy overlay cladding so that the problem of copper bearing band and the strength of joint of steel matrix significantly reduce.The inventive method：First, copper ring is enclosed at the precalculated position A on cannonball shell；2nd, copper ring is radially pressed into cannonball shell using take-up machine, tightens up copper ring, and cannonball shell is loaded on agitating friction welding work table with fixture, while copper ring clamping is fixed on cannonball shell；3rd, welding：Start friction stir welding machine, stirring-head press-in copper ring, cannonball shell rotates under the drive of fixture along own axes, and copper ring also rotates, and cannonball shell, which rotates a circle, completes welding；4th, after the completion of welding, repair welding is carried out to keyhole using the method for filled type agitating friction weldering, so far, completes the preparation of copper bearing band.The present invention is used to prepare copper bearing band.
Description
Technical field
The present invention relates to the bearing band preparation method in a kind of shell manufacturing process, and in particular to one kind utilizes agitating friction weldering
The method for preparing copper bearing band.
Background technology
Bearing band is one of chief component of shell, and is widely used in all size shell, and main function is closed
Powder gases simultaneously rotate shell, while increase range, improve precision, moreover it is possible to reduce the abrasion of rifling.Traditional mode of production bearing band
Method is mechanical interlock mode, and it is by processing conduction band groove (heavy caliber shell is dovetail groove) on body, and in groove
Bottom roller embossing, make copper alloy or pure iron band chimeric with body in the case where suppressing.This traditional processing mode is not only spent largely
Time, Cutter wear also add the bullet wall of shell also than more serious, reduce explosive payload, and brisance also weakens therewith, and
Stress concentration is easily produced, bearing band easily comes off during transmitting.The method that the mode of mechanical interlock prepares bearing band can not increasingly fit
Answer the growth requirement of following shell.At the same time, overlaying method prepare bearing band method obtained it is increasing attention and should
With.But there is also obvious deficiency for surfacing of Cu bearing band technology.Copper and steel are to belong to different metal materials, they there is compared with
Big physics, chemical property difference so that the solderability of built-up welding is poor；Also, because the molten of copper and steel metal can occur for built-up welding
Change, when excess iron enter copper alloy overlay cladding when, can be caused in copper alloy overlay cladding great stress concentration and seriously
Contamination cracking defect so that copper bearing band and the strength of joint of steel matrix significantly reduce；Moreover, caused general iron makes bearing band hard
Degree drastically raises, and shell easily scratches rifling when launching, and shortens the service life of bore.
The content of the invention
The present invention is in order to solve copper bearing band prepared by existing overlaying method, when iron enters copper alloy overlay cladding, can be closed in copper
Great stress concentration and serious contamination cracking defect are caused in golden overlay cladding so that copper bearing band and the strength of joint of steel matrix
Significantly reduce；Moreover, caused general iron makes bearing band hardness drastically raise, and shell easily scratches rifling when launching, and shortens big gun
The problem of thorax service life, and propose a kind of method that copper bearing band is prepared using agitating friction weldering.
It is an object of the invention to provide a kind of new method that copper bearing band is prepared using agitating friction weldering, copper bearing band is not only realized
With being reliably connected for cannonball shell, and can avoids the problem of general iron makes bearing band excessive high hardness damage rifling during built-up welding.
The present invention it is a kind of using agitating friction weldering prepare copper bearing band method through the following steps that realize：
Step 1: copper ring is enclosed on cannonball shell, and copper ring is moved at the A of housing precalculated position；
Step 2: copper ring is radially pressed into cannonball shell using take-up machine, copper ring is tightened up, and with fixture by shell
Housing is loaded on agitating friction welding work table, while copper ring clamping is fixed on cannonball shell；
Step 3: welding：Start friction stir welding machine, stirring-head press-in copper ring, drive lower edge of the cannonball shell in fixture
Own axes rotate, and copper ring also rotates with, and stirring-head position is constant, and cannonball shell, which rotates a circle, completes welding；
Step 4: after the completion of welding, repair welding is carried out to keyhole using the method for filled type agitating friction weldering, and with lathe tool pair
It carries out follow-up smooth processing, so far, completes the preparation of copper bearing band.
The present invention has the advantages that compared with prior art：
First, the present invention prepares copper bearing band using the method for agitating friction weldering, realizes effective connection of copper ring and cannonball shell,
Agitating friction weldering causes the housing of copper ring and steel to realize metallurgical binding, and strength of joint is high, is less prone in shell emission process
The problem of bearing band of appearance comes off.
2nd, agitating friction weldering is a kind of solid phase joining technique, is especially suitable for non-ferrous metal, the welding such as welding aluminium, copper and obtains
Joint do not produce stomata that melting welding often occurs, be mingled with and the defects of crackle, due to copper and steel does not occur in welding process
Fusing, therefore the phenomenon of general iron and contamination cracking will not occur, bonding strength is both ensure that, avoids general iron to make bearing band hardness anxious again
The problem of play rise scratches rifling.
3rd, the method that copper bearing band is prepared using agitating friction weldering combines traditional mechanical interlock mode and overlaying method system
The advantages of standby bearing band.
4th, the copper bearing band prepared using the method for the present invention does not increase shell bullet wall thickness, has accordingly increased explosive payload.
Brief description of the drawings
The schematic diagram of copper ring 1 is cased with Fig. 1 cannonball shells 2；
Fig. 2 friction stir welding methods weld the schematic diagram of copper bearing band；
The schematic diagram of Fig. 3 agitating friction postwelding machined copper bearing bands.
Embodiment
Embodiment one：Illustrate present embodiment with reference to Fig. 1~Fig. 3, present embodiment is through the following steps that reality
Existing：
Step 1: copper ring 1 is enclosed on cannonball shell 2, and copper ring 1 is moved at the A of housing precalculated position；Can also be in big gun
Radial slot is opened at precalculated position A on body 2, copper ring 1 is positioned and is fixed in radial slot；
Step 2: copper ring 1 is radially pressed into cannonball shell 2 using take-up machine, copper ring 1 is tightened up, so as to follow-up
Welding, and cannonball shell 2 is loaded on agitating friction welding work table with fixture, while the clamping of copper ring 1 is fixed on gun shell
On body 2；
Step 3: welding：Start friction stir welding machine, stirring-head 3 is pressed into copper ring 1, and cannonball shell 2 is under the drive of fixture
Rotated along own axes, copper ring 1 also rotates with, and the position of stirring-head 3 is constant, and cannonball shell 2, which rotates a circle, completes welding；
Step 4: after the completion of welding, repair welding is carried out to keyhole using the method for filled type agitating friction weldering, and with lathe tool 4
Follow-up smooth processing is carried out to it, so far, completes the preparation of copper bearing band.Filled type agitating friction weldering is prior art.
Embodiment two：Illustrate present embodiment with reference to Fig. 1~Fig. 3, present embodiment is the shell in step 1
The material of housing 2 is steel.Other steps are identical with embodiment one.
Embodiment three：Illustrate present embodiment with reference to Fig. 2, present embodiment is the stirring of stirring-head in step 3
Pin length is identical with the thickness of copper ring 1.Other steps are identical with embodiment one or two.
Embodiment four：Illustrate present embodiment with reference to Fig. 2, present embodiment is the shaft shoulder of stirring-head in step 3
Diameter should be less than the width of copper ring 1.Other steps are identical with embodiment three.
Embodiment five：Illustrate present embodiment with reference to Fig. 2, present embodiment is the welding parameter in step 3
For：Stirring-head rotating speed 800r/min~2000r/min, speed of welding 10mm/min~50mm/min, shaft shoulder volume under pressure 0.05mm
~0.5mm, welding parameter can be selected according to concrete conditions such as the material category of bearing band and housing, thickness.Other steps and tool
Body embodiment four is identical.
Embodiment six：Illustrate present embodiment with reference to Fig. 2, present embodiment is the welding parameter in step 3
For：Stirring-head rotating speed 900r/min, speed of welding 30mm/min, shaft shoulder volume under pressure 0.1mm.Other steps and embodiment
Five is identical.
Embodiment seven：Illustrate present embodiment with reference to Fig. 2, present embodiment is the welding parameter in step 3
For：Stirring-head rotating speed 1000r/min, speed of welding 20mm/min, shaft shoulder volume under pressure 0.2mm.Other steps and specific embodiment party
Formula five is identical.
Embodiment eight：Illustrate present embodiment with reference to Fig. 2, present embodiment is the welding parameter in step 3
For：Stirring-head rotating speed 1500r/min, speed of welding 40mm/min, shaft shoulder volume under pressure 0.3mm.Other steps and specific embodiment party
Formula five is identical.
Embodiment nine：Illustrate present embodiment with reference to Fig. 2, present embodiment is the welding parameter in step 3
For：Stirring-head rotating speed 1800r/min, speed of welding 35mm/min, shaft shoulder volume under pressure 0.4mm.Other steps and specific embodiment party
Formula five is identical.
Embodiment ten：Illustrate present embodiment with reference to Fig. 2, present embodiment is the welding parameter in step 3
For：Stirring-head rotating speed 1600r/min, speed of welding 25mm/min, shaft shoulder volume under pressure 0.15mm.Other steps and specific embodiment party
Formula five is identical.
Claims (9)
- A kind of 1. method that copper bearing band is prepared using agitating friction weldering, it is characterised in that：The method for preparing copper bearing band is logical Cross following steps realization：Step 1: copper ring (1) is enclosed on cannonball shell (2), and copper ring (1) is moved at the A of housing precalculated position；Cannonball shell (2) material is steel；Step 2: copper ring (1) is radially pressed into cannonball shell (2) using take-up machine, copper ring (1) is tightened up, and use fixture Cannonball shell (2) is loaded on agitating friction welding work table, while copper ring (1) clamping is fixed on cannonball shell (2)；Step 3: welding：Start friction stir welding machine, stirring-head (3) press-in copper ring (1), drive of the cannonball shell (2) in fixture Lower to be rotated along own axes, copper ring (1) also rotates with, and stirring-head (3) position is constant, and cannonball shell (2) rotates a circle completion Welding；Step 4: after the completion of welding, repair welding is carried out to keyhole using the method for filled type agitating friction weldering, and it is right with lathe tool (4) It carries out follow-up smooth processing, so far, completes the preparation of copper bearing band.
- A kind of 2. method that copper bearing band is prepared using agitating friction weldering according to claim 1, it is characterised in that：The step The mixing needle length of stirring-head is identical with the thickness of copper ring (1) in rapid three.
- A kind of 3. method that copper bearing band is prepared using agitating friction weldering according to claim 2, it is characterised in that：The step The shaft shoulder diameter of stirring-head should be less than the width of copper ring (1) in rapid three.
- A kind of 4. method that copper bearing band is prepared using agitating friction weldering according to claim 3, it is characterised in that：The step Welding parameter in rapid three is：Stirring-head rotating speed 800r/min~2000r/min, speed of welding 10mm/min~50mm/min, Shaft shoulder volume under pressure 0.05mm~0.5mm.
- A kind of 5. method that copper bearing band is prepared using agitating friction weldering according to claim 4, it is characterised in that：The step Welding parameter in rapid three is：Stirring-head rotating speed 900r/min, speed of welding 30mm/min, shaft shoulder volume under pressure 0.1mm.
- A kind of 6. method that copper bearing band is prepared using agitating friction weldering according to claim 4, it is characterised in that：The step Welding parameter in rapid three is：Stirring-head rotating speed 1000r/min, speed of welding 20mm/min, shaft shoulder volume under pressure 0.2mm.
- A kind of 7. method that copper bearing band is prepared using agitating friction weldering according to claim 4, it is characterised in that：The step Welding parameter in rapid three is：Stirring-head rotating speed 1500r/min, speed of welding 40mm/min, shaft shoulder volume under pressure 0.3mm.
- A kind of 8. method that copper bearing band is prepared using agitating friction weldering according to claim 4, it is characterised in that：The step Welding parameter in rapid three is：Stirring-head rotating speed 1800r/min, speed of welding 35mm/min, shaft shoulder volume under pressure 0.4mm.
- A kind of 9. method that copper bearing band is prepared using agitating friction weldering according to claim 4, it is characterised in that：The step Welding parameter in rapid three is：Stirring-head rotating speed 1600r/min, speed of welding 25mm/min, shaft shoulder volume under pressure 0.15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610343937.8A CN105772936B (en) | 2016-05-23 | 2016-05-23 | A kind of method that copper bearing band is prepared using agitating friction weldering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610343937.8A CN105772936B (en) | 2016-05-23 | 2016-05-23 | A kind of method that copper bearing band is prepared using agitating friction weldering |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105772936A CN105772936A (en) | 2016-07-20 |
| CN105772936B true CN105772936B (en) | 2018-03-27 |
Family
ID=56380310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610343937.8A Active CN105772936B (en) | 2016-05-23 | 2016-05-23 | A kind of method that copper bearing band is prepared using agitating friction weldering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105772936B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110193700A (en) * | 2019-06-10 | 2019-09-03 | 中国兵器工业第五九研究所 | A kind of welding method of minor diameter dissimilar metal revolving body member |
| CN113770507B (en) * | 2021-10-09 | 2022-08-26 | 中国兵器工业第五九研究所 | High-strength high-reliability sealing radial friction welding method for steel pipe fitting |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE441305B (en) * | 1979-03-07 | 1985-09-23 | Bofors Ab | WAY TO FIX A PROJECTIL'S BELT BY FRICTION SWEATING |
| US6247634B1 (en) * | 1999-06-30 | 2001-06-19 | Mce Technologies Incorporated | Method and apparatus for forming a stir welded joint at meeting cylindrical edges |
| CN1245271C (en) * | 2003-04-17 | 2006-03-15 | 西北工业大学 | Method for welding bearing band |
| JP4705802B2 (en) * | 2004-04-19 | 2011-06-22 | 昭和電工株式会社 | Friction stir welding apparatus and friction stir welding method |
| CN1788911A (en) * | 2004-12-15 | 2006-06-21 | 首都航天机械公司 | Welding process of keyhole-free stirring and friction welding |
| CN102019501B (en) * | 2009-09-10 | 2012-10-10 | 中国航空工业集团公司北京航空制造工程研究所 | Friction stir welding method for circular seam |
| CN104114315A (en) * | 2011-12-30 | 2014-10-22 | 美佳斯迪尔科技有限责任公司 | System and method for holding materials having arcuate surfaces in place for friction stir welding or processing |
| CN103008870A (en) * | 2012-11-28 | 2013-04-03 | 上海交通大学 | Method for friction stir welding for dissimilar materials (i.e., slender thin-wall circular pipes) |
| CN103008872B (en) * | 2012-12-18 | 2015-02-25 | 天津大学 | Stirring friction processing remanufacturing method of worn shaft type parts |
| CN103831525B (en) * | 2014-03-12 | 2015-12-02 | 西安科技大学 | Electric switch aluminium bar and copper ring friction welding apparatus and method |
-
2016
- 2016-05-23 CN CN201610343937.8A patent/CN105772936B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105772936A (en) | 2016-07-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103008988B (en) | The method of internal joint patch weldering exempted from by a kind of anticorrosive steel pipeline | |
| CN114012241B (en) | Friction welding method for revolving body component with closed cavity or closed channel | |
| CN107442891A (en) | A kind of cut deal body longitudinal and girth welding joint and welding procedure | |
| CN105834608B (en) | A kind of method for synchronously realizing aluminium and magnesium foreign material friction stir spot welding soldering diffusion welding (DW) | |
| CN105772936B (en) | A kind of method that copper bearing band is prepared using agitating friction weldering | |
| CN101362249A (en) | Girth welding method of duplex stainless steel bimetal composite pipe | |
| CN103216682A (en) | Composite tube and manufacture method thereof | |
| CN103071891B (en) | Method for welding composite bearing band of soft iron mixed with pure copper, and structure of composite bearing band | |
| CN100358665C (en) | Method for welding shell belt by argon arc build-up welding with different copper double wires | |
| CN110340528B (en) | Welding method for airborne small rocket shell | |
| CN103008872B (en) | Stirring friction processing remanufacturing method of worn shaft type parts | |
| CN102636084B (en) | Soft iron-brass composite band structure and welding method thereof | |
| CN110193700A (en) | A kind of welding method of minor diameter dissimilar metal revolving body member | |
| CN106392451A (en) | Internal supporting positioning device for girth welding of flange plates of carrier rocket tanks | |
| CN106808081A (en) | A kind of connection method of aluminium alloy and stainless steel special profile revolving body member | |
| CN107552944A (en) | A kind of repair method of copper-steel composite plate composition surface defect area | |
| CN113967785B (en) | Friction welding method for reinforcing heterogeneous material bidirectional embedding machine | |
| CN101699021A (en) | Friction welding type kelly bar | |
| CN108103379A (en) | A kind of high-wearing feature TC bearings and preparation method thereof | |
| CN205349236U (en) | Spout type laser welding diamond bit at bottom of major -minor | |
| CN101972885B (en) | Bushing-free narrow-gap pulse gas metal arc backing welding method of petroleum kelly bar | |
| CN109732293A (en) | A kind of thin-walled divergence type solid cage processing method | |
| CN103894722A (en) | Explosive welding forming method of titanium and common low alloy steel composite seal head | |
| CN101352785B (en) | Method for welding pressing sleeve of large-sized hydraulic press | |
| CN108372359A (en) | A kind of friction stir welding method for eliminating weld seam Reducing thickness using additional t plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190605 Address after: 215334 No. 135 Zhangji Road, Kunshan Development Zone, Suzhou City, Jiangsu Province Patentee after: Kunshan Hagong Wanzhou Welding Research Institute Co.,Ltd. Address before: 150006 Room 107, First Floor, Science Park, Harbin University of Technology, 434 Post Street, Nangang District, Harbin City, Heilongjiang Province Patentee before: HARBIN WORLD WIDE WELDING TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230330 Address after: Room 611-426, R&D Center Building, China (Hefei) International Intelligent Voice Industrial Park, 3333 Xiyou Road, High-tech Zone, Hefei City, Anhui Province, 230094 Patentee after: Anhui Wanyu mechanical equipment Technology Co.,Ltd. Address before: 215334 No. 135 Zhangji Road, Kunshan Development Zone, Suzhou City, Jiangsu Province Patentee before: Kunshan Hagong Wanzhou Welding Research Institute Co.,Ltd. |