CN105728895B - A kind of Al-alloy parts welding method - Google Patents
A kind of Al-alloy parts welding method Download PDFInfo
- Publication number
- CN105728895B CN105728895B CN201610184435.5A CN201610184435A CN105728895B CN 105728895 B CN105728895 B CN 105728895B CN 201610184435 A CN201610184435 A CN 201610184435A CN 105728895 B CN105728895 B CN 105728895B
- Authority
- CN
- China
- Prior art keywords
- welding
- solder layer
- mother metal
- welded
- aluminium alloy
- 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
- 238000003466 welding Methods 0.000 title claims abstract description 91
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 26
- 229910000679 solder Inorganic materials 0.000 claims abstract description 33
- 229910052751 metal Inorganic materials 0.000 claims abstract description 29
- 239000002184 metal Substances 0.000 claims abstract description 29
- 238000012797 qualification Methods 0.000 claims abstract description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 14
- 238000007689 inspection Methods 0.000 claims description 10
- 229910052786 argon Inorganic materials 0.000 claims description 7
- 210000000080 chela (arthropods) Anatomy 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 239000000243 solution Substances 0.000 claims description 6
- 239000000428 dust Substances 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 5
- 239000006104 solid solution Substances 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000001816 cooling Methods 0.000 abstract description 3
- 238000004021 metal welding Methods 0.000 abstract description 2
- 239000011324 bead Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000012958 reprocessing Methods 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- LFYJSSARVMHQJB-QIXNEVBVSA-N bakuchiol Chemical compound CC(C)=CCC[C@@](C)(C=C)\C=C\C1=CC=C(O)C=C1 LFYJSSARVMHQJB-QIXNEVBVSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002699 waste material 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
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
-
- 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
- B23K9/164—Arc welding or cutting making use of shielding gas making use of a moving fluid
-
- 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
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
-
- 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
- B23K9/23—Arc welding or cutting taking account of the properties of the materials to be welded
-
- 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
- B23K9/32—Accessories
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/18—Sheet panels
-
- 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
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/10—Aluminium or alloys thereof
Abstract
The invention discloses a kind of Al-alloy parts welding method, include the following steps：Step 1, ER5356 welding wires are used on the weld seam of aluminium alloy mother metal, carry out bottoming welding in a manner of TIG is welded, to form bottoming solder layer on the weld seam of aluminium alloy mother metal；Step 2, ER4043 welding wires are used on bottoming solder layer, are filled welding in a manner of TIG is welded, to form filling solder layer on bottoming solder layer；Step 3, ER5356 welding wires are used on filling solder layer, carry out cover welding in a manner of TIG is welded, to form capping solder layer on filling solder layer.The present invention forms filling solder layer with ER4043 welding wires in the bottoming solder layer welding using ER5356 welding wires, the characteristics of formed solder layer good toughness being welded using ER4043 welding wires, improve the toughness of whole weld seam, there is weld crack in commissure after avoiding the problem that the cooling of aluminium alloy mother metal, to improve the qualification rate of aluminium alloy mother metal welding finished product.
Description
Technical field
The present invention relates to a kind of Al-alloy parts welding method, and more particularly to thickness range is between 30mm-90mm, leg height
Degree existsBetween 6061 plate angle weld seam welding methods.
Background technology
At present, the conductive structure part in extra-high voltage switch equipment in order to realize light weight, conduct electricity very well, mechanical property it is excellent
Good function, uses aluminum alloy welding fitting more.After current domestic pharmaceutical industry industry is for different aluminum alloys material classification, to Al-alloy parts
Between welding use ER5183, ER4043, ER5356 welding wire in a kind of welding material.As depicted in figs. 1 and 2, it is extra-high
1 conventionally manufactured mode of pivot flange in voltage switching station is the welding material recommended according to the welding wire trade mark, in pivot flange 1
Welded between 6061 plates using ER5356 welding wires, its welding procedure is as shown in the table：
But in welding process, welding section 2 undergoes a complicated uneven quick heating and cooling procedure, this certainty
Cause welding section 2 that unbalanced ess-strain change occurs, this unbalanced ess-strain is to cause postwelding to form remaining answer
The main reason for power and deformation.When carrying out dyeing inspection to pivot flange 1, it is found that generally existing is big in 1 finished product of pivot flange
The bead crack and stomata of amount, the experimental data of result of detection is as follows after reaction filler wire change：
After reprocessing twice and carrying out overall solution treatment, the solder yield of 1 finished product of pivot flange only has 63% or so.Examination
Statistics is tested to show, weld defect account for 1100kV products pivot flange 1 always unqualified phenomenon 82%, wherein crackle and stomata
Account for welding the 89.9% of unqualified defect.Underproof pivot flange 1 needs to polish again, and removal of defects is until dye penetrant inspection
Qualification, adds additional metallic dust pollution.Even if welding after stain passed examination, integrated support flange 1 wants butt welding after welding
Stitch position and carry out solution treatment, still occur that weld seam position has crack defect after heat treatment.Need to polish repeatedly, repair welding, coloring
Check, heat treatment, energy waste is serious, also so that the qualification rate of product seriously reduces.
The content of the invention
The object of the present invention is to provide a kind of Al-alloy parts welding method, it is intended to solves Al-alloy parts in the prior art and welds
Easily occurs the problem of bead crack afterwards.
In order to realize the above object the technical solution of Al-alloy parts welding method is as follows in the present invention：
Al-alloy parts welding method, includes the following steps：
Step 1, ER5356 welding wires are used on the weld seam of aluminium alloy mother metal, carry out bottoming welding in a manner of TIG is welded,
To form bottoming solder layer on the weld seam of aluminium alloy mother metal；
Step 2, ER4043 welding wires are used on bottoming solder layer, are filled welding in a manner of TIG is welded, to beat
Filling solder layer is formed on the back welding bed of material；
Step 3, ER5356 welding wires are used on filling solder layer, carry out cover welding in a manner of TIG is welded, to fill out
Fill formation capping solder layer on solder layer.
Aluminium alloy mother metal is 6061 plates of the thickness in the range of 30mm-90mm, and the leg height of the weld seam on mother metal existsScope.
Step 1: in three ER5356 welding wires a diameter of 4.0mm, a diameter of 3.2mm of ER4043 welding wires in step 2.
Step 1 to the voltages welded of TIG in three are 23V~24V, and electric current is 320A~380A.
Step 1: the argon gas flow velocity that TIG is welded in two is 20L/min, the argon gas flow velocity that TIG is welded in step 3 is 22L/min.
In step 1, before being welded on aluminium alloy mother metal, aluminium alloy mother metal is first preheated to 280-300 DEG C.
In step 1, before being welded to aluminium alloy mother metal, first aluminium alloy mother metal is riveted on using compression tooling
Together.
Carrying out before aluminium alloy mother metal riveted, to the weld seam on aluminium alloy mother metal and its dust at surrounding 50mm,
Greasy dirt and oxide-film are cleared up.
In step 5, pincers being carried out to the weld seam residing for capping solder layer and are repaiied, the finished product after being repaiied to pincers carries out dye penetrant inspection,
And the overall solution treatment after dye penetrant inspection qualification, it is qualified through dye penetrant inspection again after solid solution is qualified.
The present invention forms filling solder layer with ER4043 welding wires in the bottoming solder layer welding using ER5356 welding wires, profit
The characteristics of welding formed solder layer good toughness with ER4043 welding wires, improves the toughness of whole weld seam, avoids aluminium alloy mother metal
There is the problem of weld crack in commissure after cooling, to improve the qualification rate of aluminium alloy mother metal welding finished product.The lifting of qualification rate
Reduce and reprocess, reduce dust pollution, reduce labor intensity, saved the energy for reprocessing needs, improved production efficiency.
Brief description of the drawings
Fig. 1 is the structure diagram of high voltage electric appliance aluminium alloy key structure part；
Fig. 2 is the left view of Fig. 1；
Fig. 3 is aluminium alloy key structure part welding line structure schematic diagram in the embodiment of the present invention.
Embodiment
The embodiment of Al-alloy parts welding method in the present invention：The welding method is a kind of high voltage electric appliance aluminium alloy
The xenogenesis welding wire hybrid welding process of key structure part, especially suitable for thickness range between 30mm-90mm, leg height existBetween 6061 plate high-quality weldings.By high voltage electric appliance with exemplified by aluminium alloy key structure part, it is somebody's turn to do
Xenogenesis welding wire hybrid welding process includes the following steps：
1) riveting tool is cleared up, and all welding components is checked, using cleaning agent to commissure and its
Dust and cleaning oil pollution are carried out in the range of 50mm, and using oxide-film at wire brush or Chiba piece cleaning welding groove；
2) each welding component is riveted on riveting tool, to obtain mother metal 24；
3) horizontal welding is carried out to mother metal 24 on positioner, after being preheated to 280-300 DEG C before welding, using Φ
4.0ER5356 welding wires carry out bottoming welding in a manner of TIG is welded, it is ensured that root fusion is good, electric current 320-380A, voltage 23V
~24V, argon flow amount 20L/min, to form bottoming solder layer 21 on the weld seam of mother metal 24；
4) reaffirm that preheating temperature is adopted to that can fill second layer filling metal, the second layer after 280-300 DEG C before filling
With Φ 3.2ER4043 welding wires welding, electric current 320-380A are filled in a manner of TIG is welded.Voltage 23V~24V, argon flow amount
20L/min, to form filling solder layer 22 on bottoming solder layer 21；It is filled up to during filling using 3~4 multipass in reduction
Stress, improves the target of weld bead height.
5) third layer uses Φ 4.0ER5356 welding wires to carry out cover welding, electric current 320-380A in a manner of TIG is welded.Lid
Reduction internal stress also is filled up to using 3~4 multipass during face, improves the target of weld bead height.Voltage 23V~24V, argon gas stream
22L/min is measured, to form capping solder layer 23 on filling solder layer 22, to obtain weld seam as shown in Figure 3；
6) carry out pincers to the weld seam residing for capping solder layer 23 to repair, the finished product progress dye penetrant inspection after repairing pincers, and
Overall solution treatment after color flaw detection is qualified, it is qualified through dye penetrant inspection again after solid solution is qualified.
The technique form of above-mentioned xenogenesis welding wire hybrid welding process is as follows：
The experimental data for reacting result of detection after filler wire changes is as follows：
In the above-described embodiments, using Φ 4.0ER5356 welding wires and Φ 3.2ER4043 welding wires to thick scope in 30mm-
Between 90mm, leg height existBetween 6061 plates welded, in other embodiments, for it
His thickness of slab parameter, the aluminium alloy mother metal of leg height can also use ER5356, ER4043 welding wire of other diameters be welded,
Or other welding sequences are welded.
Claims (9)
1. Al-alloy parts welding method, it is characterised in that include the following steps：
Step 1, used on the weld seam of aluminium alloy mother metal ER5356 welding wires, by TIG weld in a manner of carry out bottoming welding, with
Bottoming solder layer is formed on the weld seam of aluminium alloy mother metal；
Step 2, ER4043 welding wires are used on bottoming solder layer, are filled welding in a manner of TIG is welded, with backing welding
Filling solder layer is formed on the bed of material；
Step 3, ER5356 welding wires are used on filling solder layer, carry out cover welding in a manner of TIG is welded, to be welded in filling
Capping solder layer is formed on the bed of material.
2. Al-alloy parts welding method according to claim 1, it is characterised in that aluminium alloy mother metal is thickness in 30mm-
6061 plates in the range of 90mm, the leg height of the weld seam on mother metal existScope.
3. Al-alloy parts welding method according to claim 2, it is characterised in that Step 1: ER5356 welding wires in three
A diameter of 4.0mm, a diameter of 3.2mm of ER4043 welding wires in step 2.
4. Al-alloy parts welding method according to claim 3, it is characterised in that the voltage that TIG is welded in step 1 to three
For 23V~24V, electric current is 320A~380A.
5. Al-alloy parts welding method according to claim 3, it is characterised in that Step 1: the argon gas stream that TIG is welded in two
Speed is 20L/min, and the argon gas flow velocity that TIG is welded in step 3 is 22L/min.
6. Al-alloy parts welding method as claimed in any of claims 1 to 5, it is characterised in that in step 1,
Before being welded on aluminium alloy mother metal, aluminium alloy mother metal is first preheated to 280-300 DEG C.
7. Al-alloy parts welding method as claimed in any of claims 1 to 5, it is characterised in that in step 1,
Before being welded to aluminium alloy mother metal, first aluminium alloy mother metal is riveted together using compression tooling.
8. Al-alloy parts welding method according to claim 7, it is characterised in that before aluminium alloy mother metal riveting is carried out,
Weld seam on the aluminium alloy mother metal and its dust at surrounding 50mm, greasy dirt and oxide-film are cleared up.
9. Al-alloy parts welding method as claimed in any of claims 1 to 5, it is characterised in that in step 3,
Pincers being carried out to the weld seam residing for capping solder layer to repair, the finished product after being repaiied to pincers carries out dye penetrant inspection, and after dye penetrant inspection qualification
Overall solution treatment, it is qualified through dye penetrant inspection again after solid solution is qualified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610184435.5A CN105728895B (en) | 2016-03-28 | 2016-03-28 | A kind of Al-alloy parts welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610184435.5A CN105728895B (en) | 2016-03-28 | 2016-03-28 | A kind of Al-alloy parts welding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105728895A CN105728895A (en) | 2016-07-06 |
| CN105728895B true CN105728895B (en) | 2018-04-13 |
Family
ID=56252225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610184435.5A Active CN105728895B (en) | 2016-03-28 | 2016-03-28 | A kind of Al-alloy parts welding method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105728895B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106312263B (en) * | 2016-10-21 | 2018-06-29 | 中国化学工程第六建设有限公司 | The welding method of aluminium alloy thick plate |
| CN107378205B (en) * | 2017-07-19 | 2020-11-10 | 新疆八一钢铁股份有限公司 | Welding process for cracks of hydraulic coupler shell |
| CN108500419A (en) * | 2017-12-07 | 2018-09-07 | 浙江星卓换热设备有限公司 | A kind of welding procedure of backing plate and cylinder fillet welding |
| CN109014510A (en) * | 2018-08-27 | 2018-12-18 | 天津市白津生焊接中心 | Improve the welding method for sending power transformation tube type bus weld seam conductivity |
| CN109202227A (en) * | 2018-10-09 | 2019-01-15 | 中国电建集团山东电力建设第工程有限公司 | A kind of effective operating procedure for inhibiting almag TIG weld defect |
| CN108971711A (en) * | 2018-10-19 | 2018-12-11 | 上海和达汽车配件有限公司 | A kind of welding procedure of aluminium alloy car dashboard cross member |
| CN110666272A (en) * | 2019-10-29 | 2020-01-10 | 苏州工业园区德研福机械设备有限公司 | Large-size high-precision aluminum alloy welding process |
| CN111250834A (en) * | 2019-12-11 | 2020-06-09 | 河北汉光重工有限责任公司 | Flexible gas protection tool suitable for angle linear welding of titanium plate |
| CN111633302A (en) * | 2020-04-27 | 2020-09-08 | 中车青岛四方机车车辆股份有限公司 | Welding method |
| CN114619198A (en) * | 2021-12-21 | 2022-06-14 | 平高集团有限公司 | Cylinder circumferential weld welding auxiliary device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104028880A (en) * | 2013-03-06 | 2014-09-10 | 青岛四方庞巴迪铁路运输设备有限公司 | Welding process method of aluminum profile car hook plate |
| CN104057187A (en) * | 2014-06-12 | 2014-09-24 | 中船黄埔文冲船舶有限公司 | Semi-automatic TIG welding method of aluminum alloy plate spliced plate with size of being more than 6mm |
| CN104607774A (en) * | 2014-12-26 | 2015-05-13 | 辽宁忠旺集团有限公司 | Aluminum alloy car body bolster weld process for subway |
| CN105127550A (en) * | 2015-09-25 | 2015-12-09 | 唐山轨道客车有限责任公司 | Sleeper beam welding and adjusting method |
| CN105171182A (en) * | 2015-10-08 | 2015-12-23 | 中国华冶科工集团有限公司 | Method for single-sided gas welding and double-faced forming of aluminum busbars |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070045260A1 (en) * | 2005-08-30 | 2007-03-01 | Frank Feng | Welded aluminum sheets and process therefore |
-
2016
- 2016-03-28 CN CN201610184435.5A patent/CN105728895B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104028880A (en) * | 2013-03-06 | 2014-09-10 | 青岛四方庞巴迪铁路运输设备有限公司 | Welding process method of aluminum profile car hook plate |
| CN104057187A (en) * | 2014-06-12 | 2014-09-24 | 中船黄埔文冲船舶有限公司 | Semi-automatic TIG welding method of aluminum alloy plate spliced plate with size of being more than 6mm |
| CN104607774A (en) * | 2014-12-26 | 2015-05-13 | 辽宁忠旺集团有限公司 | Aluminum alloy car body bolster weld process for subway |
| CN105127550A (en) * | 2015-09-25 | 2015-12-09 | 唐山轨道客车有限责任公司 | Sleeper beam welding and adjusting method |
| CN105171182A (en) * | 2015-10-08 | 2015-12-23 | 中国华冶科工集团有限公司 | Method for single-sided gas welding and double-faced forming of aluminum busbars |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105728895A (en) | 2016-07-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105728895B (en) | A kind of Al-alloy parts welding method | |
| CN100548562C (en) | The welding method of 50+120mm slab | |
| CN103962791B (en) | Large-scale heat resisting steel foundry goods welding repair method | |
| CN101774063B (en) | Defect repair welding process of stainless steel composite board coating | |
| CN105081528A (en) | Welding technology of Q345qE structural steel | |
| CN104858555A (en) | Pressure pipeline welding process | |
| CN103084703A (en) | Method for patching, overlay welding and reproducing large-scale hollow steel casting | |
| CN110449703A (en) | A kind of aluminum alloy piping welding technique | |
| CN103170712A (en) | Tube socket fillet weld reheat crack prevention method | |
| CN103212913A (en) | Fitting up and welding method of major-diameter thin-wall stainless steel bellows | |
| CN103659184B (en) | A kind of welding method of radiating bottom plate | |
| CN104759739B (en) | Compound welding process of railway vehicle box beam | |
| CN107322141A (en) | A kind of welding repair method of crank axle for vessel local defect | |
| CN103894702B (en) | A kind of rotor web crackle welding repair method | |
| CN110961858A (en) | High-frequency pulse electric arc repairing method for precision casting defect of heavy gas turbine equiaxial crystal blade | |
| CN104526133A (en) | Method for preventing tearing of metal welding layers | |
| CN102886589B (en) | Welding process for corrosion-resistant alloy material Monel 400 | |
| CN102284772B (en) | Argon arc back sealing welding method for housing of low-pressure water supply heater of third-generation nuclear power steam turbine | |
| CN110328492B (en) | A-TIG welding repair compound method for long cracks of aero-engine turbine rear casing support plate | |
| CN105127557B (en) | The medicine core gas shielded arc welding Rework Technics of marine engineering large thick steel plate under low temperature environment | |
| CN109909645B (en) | Residual stress deformation control method for thick plate single-side filling welding joint | |
| CN210388012U (en) | Welding device for large aluminum forging alloy lifting appliance of high-speed wheel | |
| CN104942544B (en) | Process for manufacturing standardization train-set head-car end portion side beam component | |
| CN112008172A (en) | Method for repairing superficial defects of iron casting | |
| CN102941399B (en) | Gas-shielded welding method for pearlite heat-resistant steel structural members |
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 |