CN107671395A - Outer barrel of absorber mixed gas welder and its welding method - Google Patents
Outer barrel of absorber mixed gas welder and its welding method Download PDFInfo
- Publication number
- CN107671395A CN107671395A CN201710968718.3A CN201710968718A CN107671395A CN 107671395 A CN107671395 A CN 107671395A CN 201710968718 A CN201710968718 A CN 201710968718A CN 107671395 A CN107671395 A CN 107671395A
- Authority
- CN
- China
- Prior art keywords
- welding
- absorber
- outer barrel
- expander roll
- self
- 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
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
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/38—Selection of media, e.g. special atmospheres for surrounding the working area
- B23K35/383—Selection of media, e.g. special atmospheres for surrounding the working area mainly containing noble gases or nitrogen
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/235—Preliminary treatment
Abstract
The present invention relates to a kind of outer barrel of absorber mixed gas welder and its welding method, it is mainly characterized by：The self-positioning expansible mandrel of weldment is additionally arranged in rotary welding machine, and coordinates rotary welding machine action to complete the self-positioning swelling and release of outer barrel of absorber；The argon gas of rational proportion and the mixed gas of carbon dioxide are employed in welding method, and set welding gun and weldment soldering angle and welding distance, during welding, the outer barrel of absorber on self-positioning expansible mandrel is driven to rotate in a counter-clockwise direction by rotary welding machine, welding gun forms the method for operation for retreating welding with direction of rotation, and peripheral annular welding is carried out to outer barrel of absorber end.By the device and welding method, manufacturing cost can be effectively reduced, single welding cost of shock absorber is reduced amplitude up to 20%.Meet shaping is brighter to splash less especially with the weldering that mixed gas welds, its spatter loss coefficient can reduce 80%~90%, and weld seam smooth appearance is neat, face of weld beautiful appearance, and fused property is good, deposition efficiency is high.
Description
Technical field
The invention belongs to vehicle shock absorber mounting technology field, particularly a kind of outer barrel of absorber mixed gas welder
And its welding method.
Background technology
The quality of shock absorber welding technique, the quality of shock absorber can be directly influenced.At present, shock absorber sector application is most
Be traditional CO2Gas shielded arc welding, most of wire melting metal can be fused into molten bath, but some wire melting metal
It can fly to outside molten bath, the metal flown to outside molten bath is referred to as splashing.The generation of splashing is because protective gas and liquid metals
Between there occurs controlling golden reaction, and gas caused by reacting has triggered caused by gas burst, particularly thick welding wire C02Gas
When big parameter welding is welded in protection, splash even more serious, at this moment spatter loss coefficient is impossible to carry out normal weld work up to more than 20%
Make.It is harmful to splash to the slickness and security of shock absorber, and it not only influences welding quality, and weld seam is coarse, Er Qiedan
Solely use CO2The appearance of weld that gas welds blacks, and its splashing is also more, is especially splashed in outer barrel of absorber, forms welding slag
Absorption is on stack shell, it is also necessary to carries out after welding treatment, both adds cost of labor, reduce welding productivity, pollutes work again
Industry environment, while security risk also be present.In addition, when carrying out the welding of outer barrel of absorber end, rotary welding machine is typically to use
The mode that scroll chuck steps up outer barrel is welded, and its outer barrel is cantilever-shaped, when carrying out outer barrel end circumference soldering, weld part
The bounce of position is big, directly influences the welding quality of outer barrel.In welding method, except using pure CO2Gas welding is outer, also has
Carbon steel welding is carried out using rich argon mixture gas, the ratio of its mixed gas is usually 80%Ar+20%CO2, this ratio
Mixed gas problem present in welding is：Argon gas can play certain protective effect, but too much, corresponding CO2Contain
Amount is reduced, and the activity of deposited metal is easily reduced in welding, is unfavorable for flowing；In addition outer barrel of absorber is typically stamping parts, punching
Also need to carry out antirust treatment after molded, if adoption rate is 80%Ar+20%CO2Mixed gas welding barrel end,
Just higher are required to the cleannes of outer barrel of absorber, for this reason, it may be necessary to increase matting and cleaning equipment, so as to considerably increase
Manufacturing cost.
The content of the invention
The purpose of the present invention is in view of the deficienciess of the prior art, providing that a kind of spatter is small, weld seam is smooth, deposition
Efficiency high, manufacturing cost can be effectively reduced, reduce the outer barrel of absorber welder and its welding method of potential safety hazard.
Technical scheme is used by realize the purpose of the present invention：The device includes rotary welding machine and multi-angle is adjustable
Welding gun fixing mount, wherein, the self-positioning expansible mandrel of weldment is provided with rotary welding machine, the mandrel has a mandrel sheet
Body, mandrel body use the integrative-structure that multi-diameter shaft is combined with straight tube axle, and the bushing of suit connection is provided with the outside of multi-diameter shaft
And ring flange, the endoporus of multi-diameter shaft is reducing stepped hole, and is connected with the central shaft hole of its straight tube axle, is provided with the central shaft hole
Expander roll inner core and expander roll, one end of expander roll are provided with blind hole, and expander roll inner core cover is set at the blind hole port of expander roll between expander roll
There is bearing assembly, expander roll spring is provided between expander roll and central shaft hole inwall, the other end of expander roll adds solid hopkinson bar for cone bar, with reality
The periphery of straight tube axle corresponding to core bar is provided with the expansion block with ramp projections, and the excircle of expansion block is provided with expansion block extension spring.
The bearing assembly includes a thrust bearing and a deep groove ball bearing, back-up ring is provided between two bearings, in depth
The external port position of ditch ball bearing is provided with circlip for shaft.
Outer barrel of absorber mixed gas welding method of the present invention comprises the following steps：
Step 1：Argon gas 40% mixed with the ratio of carbon dioxide 60% according to weighing method stand-by in gas cylinder；
Step 2：Antirust treatment is carried out to outer barrel of absorber surface；
Step 3：Self-positioning expansible mandrel is installed on rotary welding machine, while the outer barrel of absorber after antirust treatment is loaded into weldering
Positioning and swelling in the self-positioning expansible mandrel of part；
Step 4：Welding gun is clamped in the adjustable welding gun fixing mount of multi-angle, adjust welding gun and outer barrel of absorber soldering angle and
Distance is welded, wherein, the angle of welding gun and outer barrel of absorber vertical axis is α=35 ° ± 5 °, welding gun and outer barrel of absorber end face
Welding distance be h=12~18mm；
Step 5：After the angle and distance of welding gun is mixed up into fastening, the mixed gas of welding is opened, gas flow is adjusted to
14 ± 5L/min, while the power supply of welding gun power supply and rotary welding machine is opened, rotary welding machine is driven on self-positioning expansible mandrel
Outer barrel of absorber rotate in a counter-clockwise direction, welding gun with direction of rotation formed retreat welding the method for operation, to shock absorber outside
Cylinder end carries out peripheral annular welding, and its welding condition is:Electric current is 370 ± 30A, and arc voltage is 35 ± 5V, rotation
The bonding machine speed of mainshaft is 42-46HZ；
Step 6：After the completion of welding, outer barrel of absorber is unloaded from self-positioning expansible mandrel, and the weld seam after welding is carried out certainly
Inspection and reconditioning；
Step 7：Trimming, by reviewer on request after the assay was approved, outer barrel of absorber finished product is transferred to next procedure.
It is according to outer barrel of absorber mixed gas welder, its advantage made of such scheme：
（1）When welding the outer barrel of shock absorber, as a result of the mode swelling weldment of the self-positioning expansible mandrel of weldment, make swelling
The bounce of outer barrel welding position afterwards reduces, slow-roll stabilization, does not ensure the welding quality of outer barrel of absorber only effectively, and makes
It is the smooth welding joint of product, uniform, attractive in appearance.
（2）Mixed by argon gas with the rational proportion of carbon dioxide, overcome and use pure CO2The weldering having during welding
Stitch coarse, welding process is splashed the defects of big, while is also overcomed using 80%Ar+20%CO2Mixed gas when, because of CO2Content
Reduction, exist welding in deposition poor fluidity the defects of.Reach that the fused property of welding is good, deposition efficiency is high, weld seam is attractive in appearance, weldering
The small practical function of termination process splashing.Simultaneously in outer barrel of absorber welding process, the requirement to outer barrel of absorber cleannes is only
Conventional cleaning need to be reached, without increasing matting and cleaning equipment, outer barrel of absorber is in punch forming and antirust treatment
Afterwards, the welding of outer barrel end can be directly carried out, so as to effectively reduce manufacturing cost, single welding cost of outer barrel of absorber reduces
Amplitude is up to 20%.
（3）In actual production, the weldering welded using the gaseous mixture of rational proportion meets the brighter splashing of shaping also few, its
Spatter loss coefficient can reduce 80%~90%, and weld seam smooth appearance is neat, and face of weld beautiful appearance, fusion penetration is uniform, and welding wire consumes
Amount and welding auxiliary material are also accordingly reduced, and the time that worker clears up needed for weldment shortens, and welding expense is obtained extra reduction.Together
When also effectively improve worker's operating environment, reduce the harm to operator's body, greatly reduce potential safety hazard.
Brief description of the drawings
Fig. 1 is the structural representation of self-positioning expansible mandrel in the present invention；
Fig. 2 is the schematic diagram of welding torch position in the present invention.
Embodiment
Referring to Fig. 1, outer barrel of absorber mixed gas welder of the invention includes rotary welding machine and multi-angle is adjustable
Welding gun fixing mount, wherein, the self-positioning expansible mandrel of weldment is provided with rotary welding machine, the mandrel has a mandrel body
1, the integrative-structure that mandrel body 1 is combined using multi-diameter shaft with straight tube axle, the bushing 4 of suit connection is provided with the outside of multi-diameter shaft
With ring flange 2, ring flange is fixed on mandrel body 1 by holding screw 3, bushing 4 be located at mandrel body 1 and ring flange 2 it
Between, one end of bushing 4 and ring flange 2 is contradicted at the shaft shoulder of the multi-diameter shaft on mandrel body 1, and other port passes through setting
Packing ring 5, nut 6 and cross recessed countersunk head sscrew 7 fasten.The endoporus of multi-diameter shaft on mandrel body 1 be and rotary welding machine main shaft
The reducing stepped hole 1-1 of connection, and connected with the central shaft hole 1-2 of its straight tube axle, it is provided with expander roll inner core in central shaft hole 1-2
10 and expander roll 16, one end of expander roll 16 be provided with blind hole 16-1, expander roll inner core 10 is sleeved at the blind hole port of expander roll 16, with expander roll
Bearing assembly is provided between 16, expander roll spring 15 is provided between expander roll 16 and central shaft hole 1-2 inwalls, the other end of expander roll 16 is
Cone bar adds solid hopkinson bar, and the periphery of straight tube axle corresponding with solid hopkinson bar is provided with the expansion block 8 with ramp projections, expansion block 8 it is cylindrical
Week is provided with expansion block extension spring 9.The bearing assembly includes a thrust bearing 11 and a deep groove ball bearing 13, between two bearings
Provided with back-up ring 12, circlip for shaft 14 is provided with the external port position of deep groove ball bearing 13.Heretofore described Spin welding
It can be that product are purchased in market with the adjustable welding gun fixing mount of multi-angle to pick, and belong to known technology, its structure repeats no more.
With reference to Fig. 1, referring to Fig. 2, in the present invention, self-positioning expansible mandrel is to coordinate rotary welding machine action to complete to subtract
Shake device outer barrel 17 positioning swelling and unclamp, one end of its mandrel body 1 is matched somebody with somebody by the internal thread of setting with rotary welding machine
Connection is closed, mandrel body 1 is arranged on after being tightened on rotary welding machine, machine inner main axis hold out against expander roll inner core by holding out against cylinder
10 position, expander roll inner core 10 is set to move right, being moved to can make the ramp projections of expansion block 8 that the swelling of outer barrel of absorber 17 is consolidated
It is fixed, now start welding gun 18 and start to weld, outer barrel of absorber 17 is on self-positioning expansible mandrel with rotating welding owner
Circumference soldering is completed in the rotation of axle, and the power of main axis comes from the motor driving of rotary welding machine.Complete after welding in machine
Hold out against cylinder rollback, expander roll 16 expander roll spring 15 elastic force effect under make its return, expansion block 8 is tightened up expansion block extension spring 9
Make to receive in expansion block 8 under effect, then remove the product for welding completion.
Outer barrel of absorber mixed gas welding method of the present invention comprises the following steps：
Step 1：Argon gas 40% mixed with the ratio of carbon dioxide 60% according to weighing method stand-by in gas cylinder；
Step 2：Antirust treatment is carried out to outer barrel of absorber surface；
Step 3：Self-positioning expansible mandrel is installed on rotary welding machine, while the outer barrel of absorber after antirust treatment is loaded into weldering
Positioning and swelling in the self-positioning expansible mandrel of part；
Step 4：Welding gun is clamped in the adjustable welding gun fixing mount of multi-angle, adjust welding gun and outer barrel of absorber soldering angle and
Distance is welded, wherein, the angle of welding gun and outer barrel of absorber vertical axis is α=35 ° ± 5 °, welding gun and outer barrel of absorber end face
Welding distance be h=12~18mm；
Step 5：After the angle and distance of welding gun is mixed up into fastening, the mixed gas of welding is opened, gas flow is adjusted to
14 ± 5L/min, while the power supply of welding gun power supply and rotary welding machine is opened, rotary welding machine is driven on self-positioning expansible mandrel
Outer barrel of absorber rotate in a counter-clockwise direction, welding gun with direction of rotation formed retreat welding the method for operation, to shock absorber outside
Cylinder end carries out peripheral annular welding, and its welding condition is:Electric current is 370 ± 30A, and arc voltage is 35 ± 5V, rotation
The bonding machine speed of mainshaft is 42-46HZ；
Step 6：After the completion of welding, outer barrel of absorber is unloaded from self-positioning expansible mandrel, and the weld seam after welding is carried out certainly
Inspection and reconditioning；
Step 6：Trimming, by reviewer on request after the assay was approved, outer barrel of absorber finished product is transferred to next procedure.
In the present invention, 40%Ar+60%CO is matched using reasonably optimizing2Mixed gas, argon gas can be made to play effectively
Ground protective effect, and can avoid welding in deposition poor fluidity the defects of.Due in mixed gas, CO2The reduction of content, makes electricity
The oxidisability of arc atmosphere weakens, and reduces the splashing caused by metallurgical reaction generates CO.And whole welding process stabilization,
Molten drop is in spray transfer, can significantly improve product quality, and the competitiveness of product greatly enhances.In actual production, due to
Improve speed of welding splashing to significantly reduce, welding wire consumption and welding auxiliary material are also accordingly reduced, and worker is cleared up needed for weldment
Time shortens, and welding expense is obtained extra reduction.In addition, can also reduce the sensitiveness to hydrogen blistering, improve section of weld joint
Shape, make appearance of weld attractive in appearance, ensure that welding quality, so there is very high practical value.
Claims (3)
1. a kind of outer barrel of absorber mixed gas welder, including rotary welding machine and the adjustable welding gun fixing mount of multi-angle, its
It is characterised by：The self-positioning expansible mandrel of weldment is provided with rotary welding machine, the mandrel has a mandrel body, mandrel sheet
Body uses the integrative-structure that multi-diameter shaft is combined with straight tube axle, and the bushing and ring flange of suit connection are provided with the outside of multi-diameter shaft,
The endoporus of multi-diameter shaft is reducing stepped hole, and is connected with the central shaft hole of its straight tube axle, and expander roll inner core is provided with the central shaft hole
And expander roll, one end of expander roll are provided with blind hole, expander roll inner core cover is provided with bearing group at the blind hole port of expander roll between expander roll
Part, expander roll spring is provided between expander roll and central shaft hole inwall, the other end of expander roll adds solid hopkinson bar for cone bar, corresponding with solid hopkinson bar
The periphery of straight tube axle be provided with the expansion block with ramp projections, the excircle of expansion block is provided with expansion block extension spring.
2. outer barrel of absorber mixed gas welder according to claim 1, it is characterised in that：The bearing assembly bag
A thrust bearing and a deep groove ball bearing are included, back-up ring is provided between two bearings, is set at the external port position of deep groove ball bearing
There is circlip for shaft.
A kind of 3. welding method of outer barrel of absorber mixed gas welder for described in claim 1, it is characterised in that：
This method comprises the following steps：
Step 1：Argon gas 40% mixed with the ratio of carbon dioxide 60% according to weighing method stand-by in gas cylinder；
Step 2：Antirust treatment is carried out to outer barrel of absorber surface；
Step 3：Self-positioning expansible mandrel is installed on rotary welding machine, while the outer barrel of absorber after antirust treatment is loaded into weldering
Positioning and swelling in the self-positioning expansible mandrel of part；
Step 4：Welding gun is clamped in the adjustable welding gun fixing mount of multi-angle, adjust welding gun and outer barrel of absorber soldering angle and
Distance is welded, wherein, the angle of welding gun and outer barrel of absorber vertical axis is a=35 ° ± 5 °, welding gun and outer barrel of absorber end face
Welding distance be h=12~18mm；
Step 5：After the angle and distance of welding gun is mixed up into fastening, the mixed gas of welding is opened, gas flow is adjusted to
14 ± 5L/min, while the power supply of welding gun power supply and rotary welding machine is opened, rotary welding machine is driven on self-positioning expansible mandrel
Outer barrel of absorber rotate in a counter-clockwise direction, welding gun with direction of rotation formed retreat welding the method for operation, to shock absorber outside
Cylinder end carries out peripheral annular welding, and its welding condition is:Electric current is 370 ± 30A, and arc voltage is 35 ± 5V, rotation
The bonding machine speed of mainshaft is 42-46HZ；
Step 6：After the completion of welding, outer barrel of absorber is unloaded from self-positioning expansible mandrel, and the weld seam after welding is carried out certainly
Inspection and reconditioning；
Step 7：Trimming, by reviewer on request after the assay was approved, outer barrel of absorber finished product is transferred to next procedure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710968718.3A CN107671395A (en) | 2017-10-18 | 2017-10-18 | Outer barrel of absorber mixed gas welder and its welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710968718.3A CN107671395A (en) | 2017-10-18 | 2017-10-18 | Outer barrel of absorber mixed gas welder and its welding method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107671395A true CN107671395A (en) | 2018-02-09 |
Family
ID=61140281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710968718.3A Pending CN107671395A (en) | 2017-10-18 | 2017-10-18 | Outer barrel of absorber mixed gas welder and its welding method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107671395A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115430887A (en) * | 2021-06-04 | 2022-12-06 | 南通振华重型装备制造有限公司 | Full penetration welding method for 16mmU rib with hot-rolled variable cross section of extra-large bridge |
| CN117020367A (en) * | 2023-10-08 | 2023-11-10 | 中国航发沈阳黎明航空发动机有限责任公司 | Welding device and welding method for titanium alloy supporting ring of engine tail nozzle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2333480Y (en) * | 1998-09-18 | 1999-08-18 | 郝晓东 | Internal expansion steel tube butt welding machine |
| CN101396784A (en) * | 2008-11-06 | 2009-04-01 | 哈尔滨工程大学 | Three-jaw fluid-pressure connection-rod swelling device for tube end |
| CN102049597A (en) * | 2011-01-07 | 2011-05-11 | 南京钢铁股份有限公司 | Argon-enriched mixed gas protection welding method for high-strength abrasion-resistant steel |
| CN203390477U (en) * | 2013-05-17 | 2014-01-15 | 文秀海 | Inner support type positioning mold |
| CN203578508U (en) * | 2013-10-18 | 2014-05-07 | 南阳淅减汽车减振器有限公司 | Chipless cut-off mold for pipes |
| CN106513951A (en) * | 2016-12-14 | 2017-03-22 | 北京北方车辆集团有限公司 | Welding process for shock absorber |
-
2017
- 2017-10-18 CN CN201710968718.3A patent/CN107671395A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2333480Y (en) * | 1998-09-18 | 1999-08-18 | 郝晓东 | Internal expansion steel tube butt welding machine |
| CN101396784A (en) * | 2008-11-06 | 2009-04-01 | 哈尔滨工程大学 | Three-jaw fluid-pressure connection-rod swelling device for tube end |
| CN102049597A (en) * | 2011-01-07 | 2011-05-11 | 南京钢铁股份有限公司 | Argon-enriched mixed gas protection welding method for high-strength abrasion-resistant steel |
| CN203390477U (en) * | 2013-05-17 | 2014-01-15 | 文秀海 | Inner support type positioning mold |
| CN203578508U (en) * | 2013-10-18 | 2014-05-07 | 南阳淅减汽车减振器有限公司 | Chipless cut-off mold for pipes |
| CN106513951A (en) * | 2016-12-14 | 2017-03-22 | 北京北方车辆集团有限公司 | Welding process for shock absorber |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115430887A (en) * | 2021-06-04 | 2022-12-06 | 南通振华重型装备制造有限公司 | Full penetration welding method for 16mmU rib with hot-rolled variable cross section of extra-large bridge |
| CN117020367A (en) * | 2023-10-08 | 2023-11-10 | 中国航发沈阳黎明航空发动机有限责任公司 | Welding device and welding method for titanium alloy supporting ring of engine tail nozzle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4213025A (en) | Apparatus for connecting metallic parts by means of arc fusion welding | |
| CN106077992A (en) | A kind of mould electric arc that is applicable to increases micro-slag gas-shielded flux-cored wire that material manufactures | |
| KR101344343B1 (en) | automatic welding system | |
| CN107671395A (en) | Outer barrel of absorber mixed gas welder and its welding method | |
| CN111155084A (en) | Method for plasma cladding composite tungsten carbide coating | |
| CN1369347A (en) | Magnetically controlled mixed gas protected consumable-electrode weld (MAG) with high deposition coefficient and its special equipment | |
| CN112122737A (en) | Automatic fillet welding method for vertical downward metal powder cored welding wire | |
| JP5582602B2 (en) | TIG welding method | |
| CN105710578B (en) | A kind of welding mechanism for being exclusively used in justifying seam welding | |
| CN205271088U (en) | Welding bench | |
| KR20120004519U (en) | Apparatus for automatic tungsten inert gas welding | |
| CN105710549A (en) | Technology of welding stainless steel cooling pipe and pipe plate of air cooler for transformer | |
| CN101733509A (en) | Novel full-automatic build-up welding machine | |
| CN101941112A (en) | Automatic wielding technology of narrow gap MAG of hydraulic cylinder body | |
| CN105710579B (en) | A kind of welder for being exclusively used in justifying seam welding | |
| CN103567615A (en) | Method for reinforcing welding tip and welding tip | |
| US20100089888A1 (en) | Apparatuses and methods for welding and for improving fatigue life of a welded joint | |
| CN105618902A (en) | Automatic argon arc welding machine for thin-wall aluminum alloy metal plate products | |
| CN205660394U (en) | Carousel formula automatic weld attacks tooth machine | |
| CN207272478U (en) | Multiple gun solid welder | |
| US4654501A (en) | Method for metal bonding of bearings | |
| CN112475551A (en) | Girth welding method for thin-wall tank body of low-alloy steel low-temperature pressure container | |
| CN105618901A (en) | Left baffle for pipeline welding and gas protection device and welding tool | |
| CN105499761B (en) | Motor stator casing and magnetic pole argon arc welding technique | |
| CN206366770U (en) | Protecgulum Combination Welding fixture |
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: 20180209 |
|
| RJ01 | Rejection of invention patent application after publication |