CN101417371B - Welding technique of Invar alloy and hard alloy welding piece - Google Patents
Welding technique of Invar alloy and hard alloy welding piece Download PDFInfo
- Publication number
- CN101417371B CN101417371B CN 200810204094 CN200810204094A CN101417371B CN 101417371 B CN101417371 B CN 101417371B CN 200810204094 CN200810204094 CN 200810204094 CN 200810204094 A CN200810204094 A CN 200810204094A CN 101417371 B CN101417371 B CN 101417371B
- Authority
- CN
- China
- Prior art keywords
- welding
- invar alloy
- alloy
- laser
- argon
- 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.)
- Expired - Fee Related
Links
Landscapes
- Laser Beam Processing (AREA)
Abstract
The invention discloses a welding technique of a welding part of invar alloy and hard alloy; the technique adopts a laser-argon arc complex welding method to realize the welding of a thick board of the invar alloy and hard alloy; an invar alloy welding layer with the single-side thickness of 6 to 12mm can be formed by only one-time welding; beveled edges are not opened when in welding, filling materials are not added, nitriding processing is not needed after welding and the interface of a sample does not have air holes and cracks after welding, and the Eta phase of the hardness of the interface can be controlled. Therefore, the technique not only overcomes the defects of the prior art, provides a shortcut for solving the difficulty that the invar alloy can not meet the requirements of strength of special occasions and high-temperature red hardness, but also provides a welding technique which has simple operation, low cost and excellent performance and is applicable to industrialized implementation.
Description
Technical field
The present invention relates to the welding procedure of a kind of invar alloy and carbide alloy weldment, belongs to the alloy welding technology field.
Background technology
Invar alloy has low-expansion characteristics, is widely used in the production of instruments such as the accurate key components and parts of Aero-Space, military weapon and oil cask, equipment.But,, usually can't bring into play the advantage of its invar in special application scenario because lower, wearability of invar alloy intensity and high-temperature behavior are poor.Many researchs have been carried out in invar alloy reinforcement field both at home and abroad, comprise that the invar alloy system strengthens, utilizes B to improve the high temperature red hardness of invar alloy and invar alloy surface modification etc., but invar alloy intensity still can't satisfy special occasions requirement of strength and the requirement of high temperature red hardness.
Carbide alloy has higher intensity, wearability, lower thermal coefficient of expansion and good high-temperature red hardness preferably, varies with temperature and keeps constant or change in the research and development of little high-end sintered-carbide tool or precision instrument to have crucial status requiring material to have wear-resisting, high temperature resistant, certain temperature range internal strain.The inventor discovers: utilize solder technology, by invar alloy is connected with carbide alloy, both are maximized favourable factors and minimized unfavourable ones, satisfy the special occasions requirement.The inventor discloses a kind of hard alloy connecting piece in Chinese patent 200810035711.7, it is to be welded by the tungsten argon arc automatic soldering technique by high bonding phase cemented carbide and invar alloy, the hard alloy connecting piece that is welded had both had the high strength of carbide alloy, high-wearing feature and good red hardness, have invar alloy again and in certain temperature range, have the constant hot expansibility of invarable effect, the difficult problem that can't satisfy special occasions requirement of strength and the requirement of high temperature red hardness for the solution invar alloy provides a new way, but the welding of thin plate invar alloy and carbide alloy during the tungsten argon arc welding method that foregoing invention adopted only is fit to, and need repeatedly upset welding ability moulding, can't realize the welding of slab invar alloy and carbide alloy.
At present, the welding that realizes the slab alloy is high energy beam welding methods such as employing laser weld, but there is following particular problem in Laser Welding: (1) laser forms reflection on the mother metal surface, and energy loss is bigger, need carry out melanism to handle; (2) laser bridging poor performance, at square groove, do not add under the condition of packing material, strict to the interface machining accuracy and the gap of materials to be welded; (3) weld interface carbide alloy one side of Xing Chenging has crisp hard η to form mutually, reduces joint performance; (4) needs are introduced after welding treatment operations such as postwelding nitriding.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, the welding procedure of a kind of invar alloy and carbide alloy weldment is provided, to realize the welding of slab invar alloy and carbide alloy.
For achieving the above object, technical scheme of the present invention is as follows:
The welding procedure of invar alloy provided by the invention and carbide alloy weldment is characterized in that: adopt laser-argon arc complex welding method, its concrete steps are as follows:
A) invar alloy to be welded and carbide alloy workpiece are fixed on the workbench;
B) laser welding gun and argon-arc welding gun are fixed on the same framework, and argon-arc welding gun is arranged on the direction of advance of laser welding gun; In addition, the laser welding gun is perpendicular to welded piece, and argon-arc welding gun becomes 30 °～60 ° angles with the axis of laser welding gun;
C) by the laser thermal source welded piece is carried out preheating before the welding, make welded piece be preheating to 150～200 ℃;
When d) welding, use six-joint robot to drive compound welding gun and move forward the realization welding along the workpiece interface; Wherein, the argon arc parameters of welding is as follows: argon arc power 990W～3140W, welding current 90～157A, weldingvoltage 11～20V, tungsten bar rifle point diameter 0.5～2mm, tungsten bar rifle point extension elongation 3～8mm, argon flow amount 15L/min, argon pressure is 0.35MPa under the room temperature, and welding process adopts the straight polarity direct current method; The technological parameter of laser weld is as follows: laser power 0.9～10kW, argon flow amount 20L/min, negative out of focus 2mm, speed of welding 1～7mm/sec.
Above-mentioned laser-argon arc composite welding process, but square groove during welding does not add packing material, and postwelding does not need nitriding to handle.
Described laser-argon arc composite welding process, invar alloy one side that departs from axis of a weld with laser facula and argon arc rifle point aligning is best.
The preferred NiFeC base of described invar alloy RE Invar alloy, its composition and composition mass percent are preferably as follows: 30%～42%Ni, 0.2%～1%C, 3.4%Mn, 0.5%Si, 3～5%Y, 1～2%Ti and surplus Fe; Wherein: when C be 0.2%～0.4%, when Y is 3.5%, the weld interface forms the tiny η of disperse mutually and the distribution broad; When C for O.6%～when 1.O%, Y were 3.5%, the weld interface did not have η and forms mutually.
Compared with prior art, beneficial effect of the present invention is as follows:
Because of the compound action of technology of the present invention by argon arc welding and Laser Welding, realized the welding of slab invar alloy and carbide alloy, single face thickness is that the invar alloy layer of 6～12mm only needs just energy moulding of once welding; But square groove during welding does not add packing material, and postwelding does not need nitriding to handle, and postwelding sample interface pore-free, crackle, and crisp hard η is mutually controlled at the interface; Therefore, technology of the present invention has not only overcome the defective of prior art, can't satisfy the difficult problem that special occasions requirement of strength and high temperature red hardness require a shortcut is provided for solving invar alloy, also provide easy and simple to handle, with low cost a, function admirable and be suitable for the welding procedure of industrializing implementation for the welding of slab alloy.
The specific embodiment
The present invention is described in further detail and completely below in conjunction with embodiment:
Embodiment 1
Select invar alloy (its composition and composition mass percent are: 42%Ni and 58%Fe) to be materials to be welded 1, selecting carbide alloy is materials to be welded 2, and invar alloy to be welded and carbide alloy workpiece are fixed on the workbench; Selecting model for use is tungsten argon arc welding machine and the TLF15000 type CO of NASTERTIG AC/DC 2500
2Laser instrument is fixed on laser welding gun and argon-arc welding gun on the same framework, and argon-arc welding gun is arranged on the direction of advance of laser welding gun, and the laser welding gun is perpendicular to welded piece, and argon-arc welding gun becomes 30 ° with the axis of laser welding gun; By the laser thermal source welded piece is carried out preheating before the welding, make welded piece be preheating to 150 ℃; During welding, use six-joint robot to drive compound welding gun and move forward the realization welding along the workpiece interface; Wherein, the technological parameter of argon arc welding is as follows: argon arc power 1960W, welding current 140A, weldingvoltage 14V, tungsten bar rifle point diameter 1mm, tungsten bar rifle point extension elongation 3mm, argon flow amount 15L/min, argon pressure are 0.35MPa under the room temperature, and welding process adopts the straight polarity direct current method; The technological parameter of Laser Welding is as follows: laser power 6kW, argon flow amount 20L/min, negative out of focus 2mm, speed of welding 4mm/sec.
After testing: the welding point pore-free of the weldment that present embodiment is prepared, crackle, nearly carbide alloy one side in interface form the block η phase in zonule, and the single face thickness of invar alloy layer is 6mm.
Embodiment 2
(its composition and composition mass percent are: 42%Ni, 0.3%C, 3.4%Mn, 0.5%Si, 3.5%Y to select invar alloy, 1.5%Ti and surplus Fe) be materials to be welded 1, selecting carbide alloy is materials to be welded 2, and invar alloy to be welded and carbide alloy workpiece are fixed on the workbench; Selecting model for use is tungsten argon arc welding machine and the TLF 15000 type CO of NASTERTIG AC/DC 2500
2Laser instrument is fixed on laser welding gun and argon-arc welding gun on the same framework, and argon-arc welding gun is arranged on the direction of advance of laser welding gun, and the laser welding gun is perpendicular to welded piece, and argon-arc welding gun becomes 60 ° with the axis of laser welding gun; By the laser thermal source welded piece is carried out preheating before the welding, make welded piece be preheating to 200 ℃; During welding, use six-joint robot to drive compound welding gun and move forward the realization welding along the workpiece interface; Wherein, the technological parameter of argon arc welding is as follows: argon arc power 2175W, welding current 145A, weldingvoltage 15V, tungsten bar rifle point diameter 1mm, tungsten bar rifle point extension elongation 3mm, argon flow amount 15L/min, argon pressure are 0.35MPa under the room temperature, and welding process adopts the straight polarity direct current method; The technological parameter of Laser Welding is as follows: laser power 5kW, argon flow amount 20L/min, negative out of focus 2mm, speed of welding 4mm/sec.
After testing: the welding point pore-free of the weldment that present embodiment is prepared, crackle, the interface bigger regional disperse of nearly carbide alloy one side is distributed with tiny η phase, and the single face thickness of invar alloy layer is 8mm.
Embodiment 3
(its composition and composition mass percent are: 42%Ni, 0.8%C, 3.4%Mn, 0.5%Si, 3.5%Y to select invar alloy, 1.5%Ti and surplus Fe) be materials to be welded 1, selecting carbide alloy is materials to be welded 2, and invar alloy to be welded and carbide alloy workpiece are fixed on the workbench; Selecting model for use is tungsten argon arc welding machine and the TLF 15000 type CO of NASTERTIG AC/DC 2500
2Laser instrument is fixed on laser welding gun and argon-arc welding gun on the same framework, and argon-arc welding gun is arranged on the direction of advance of laser welding gun, and the laser welding gun is perpendicular to welded piece, the axis angle at 45 of argon-arc welding gun and laser welding gun; By the laser thermal source welded piece is carried out preheating before the welding, make welded piece be preheating to 180 ℃; During welding, use six-joint robot to drive compound welding gun and move forward the realization welding along the workpiece interface; Wherein, the technological parameter of argon arc welding is as follows: argon arc power 2496W, welding current 156A, weldingvoltage 16V, tungsten bar rifle point diameter 1mm, tungsten bar rifle point extension elongation 3mm, argon flow amount 15L/min, argon pressure are 0.35MPa under the room temperature, and welding process adopts the straight polarity direct current method; The technological parameter of Laser Welding is as follows: laser power 4.5kW, argon flow amount 20L/min, negative out of focus 2mm, speed of welding 4mm/sec.
After testing: the welding point pore-free of the weldment that present embodiment is prepared, crackle, interface do not form the η phase, and the single face thickness of invar alloy layer is 10mm.
Claims (7)
1. the welding procedure of invar alloy and carbide alloy weldment, it is characterized in that: adopt laser-argon arc complex welding method, its concrete steps are as follows:
A) invar alloy to be welded and carbide alloy workpiece are fixed on the workbench;
B) laser welding gun and argon-arc welding gun are fixed on the same framework, and argon-arc welding gun is arranged on the direction of advance of laser welding gun; In addition, the laser welding gun is perpendicular to welded piece, and argon-arc welding gun becomes 30 °～60 ° angles with the axis of laser welding gun;
C) by the laser thermal source welded piece is carried out preheating before the welding, make welded piece be preheating to 150 ℃～200 ℃;
When d) welding, use six-joint robot to drive compound welding gun and move forward the realization welding along the workpiece interface; Wherein, the argon arc parameters of welding is as follows: argon arc power 990W～3140W, welding current 90～157A, weldingvoltage 11～20V, tungsten bar rifle point diameter 0.5～2mm, tungsten bar rifle point extension elongation 3～8mm, argon flow amount 15L/min, argon pressure is 0.35MPa under the room temperature, and welding process adopts the straight polarity direct current method; The technological parameter of laser weld is as follows: laser power 0.9～10kW, argon flow amount 20L/min, negative out of focus 2mm, speed of welding 1～7mm/sec.
2. the welding procedure of invar alloy according to claim 1 and carbide alloy weldment is characterized in that: square groove during welding, do not add packing material, and postwelding does not need nitriding to handle.
3. the welding procedure of invar alloy according to claim 1 and 2 and carbide alloy weldment is characterized in that: laser facula and argon arc rifle point are aimed at invar alloy one side that departs from axis of a weld.
4. the welding procedure of invar alloy according to claim 1 and carbide alloy weldment is characterized in that: described invar alloy is a NiFeC base RE Invar alloy.
5. the welding procedure of invar alloy according to claim 4 and carbide alloy weldment, it is characterized in that: the composition and the composition mass percent of described NiFeC base RE Invar alloy are as follows: 30%～42%Ni, 0.2%～1%C, 3.4%Mn, 0.5%Si, 3～5%Y, 1～2%Ti and surplus Fe.
6. the welding procedure of invar alloy according to claim 5 and carbide alloy weldment is characterized in that: the mass percent of the C in the composition of described NiFeC base RE Invar alloy is 0.2%～0.4%, and the mass percent of Y is 3.5%.
7. the welding procedure of invar alloy according to claim 5 and carbide alloy weldment is characterized in that: the mass percent of the C in the composition of described NiFeC base RE Invar alloy is 0.6%～1.0%, and the mass percent of Y is 3.5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810204094 CN101417371B (en) | 2008-12-05 | 2008-12-05 | Welding technique of Invar alloy and hard alloy welding piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810204094 CN101417371B (en) | 2008-12-05 | 2008-12-05 | Welding technique of Invar alloy and hard alloy welding piece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101417371A CN101417371A (en) | 2009-04-29 |
| CN101417371B true CN101417371B (en) | 2010-08-18 |
Family
ID=40628472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810204094 Expired - Fee Related CN101417371B (en) | 2008-12-05 | 2008-12-05 | Welding technique of Invar alloy and hard alloy welding piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101417371B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103252577A (en) * | 2012-02-20 | 2013-08-21 | 上海工程技术大学 | Method for controlling dissolution of tungsten carbide of laser welding head interface |
| CN103406675B (en) * | 2013-08-15 | 2015-09-09 | 南京中科煜宸激光技术有限公司 | A kind of slab high-strength steel laser arc hybrid welding method and fixture thereof |
| CN103537783B (en) * | 2013-10-16 | 2015-09-16 | 上海工程技术大学 | The welding method of the MIG automatic welding of carbide alloy and steel |
| CN105014238B (en) * | 2015-07-23 | 2017-06-27 | 上海工程技术大学 | Laser Welding weldment of hard alloy/INVAR/ steel and preparation method thereof |
| CN105081574B (en) * | 2015-09-18 | 2017-03-01 | 大连理工大学 | A kind of layering pulse laser reduces the method that invar steel welds hot cracking tendency |
| CN114012221A (en) * | 2021-11-26 | 2022-02-08 | 昌河飞机工业（集团）有限责任公司 | Welding method for forming die surface of invar alloy composite material |
-
2008
- 2008-12-05 CN CN 200810204094 patent/CN101417371B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101417371A (en) | 2009-04-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101417371B (en) | Welding technique of Invar alloy and hard alloy welding piece | |
| CN106271214B (en) | A kind of preparation method being brazed stainless steel Ag-Cu/W nano-multilayer film solder | |
| CN102409338B (en) | Same-wavelength double-beam narrow-spot laser quick cladding method | |
| CN102560478A (en) | Laser cladding method | |
| CN101774070B (en) | Micro-plasma arc welding for heat-resistant casting alloy and austenitic stainless steel | |
| CN102191495A (en) | Method for quickly preparing metal ceramic coating through laser induced composite fusioncast | |
| CN104801848B (en) | Method for adjusting and controlling brittle phase in titanium/aluminum dissimilar metal friction stir welding joint | |
| CN101890571A (en) | Welding method for prolonging hard alloy tool with double metal structure | |
| CN101143402A (en) | Screw plunger welding composite connecting method for adhesive joint repair | |
| CN101722353B (en) | Welding method for micro-plasma arc welding of pure titanium foil | |
| CN1555957A (en) | Tungsten electrode argon arc welding active flux for increasing welding fusion depth | |
| CN105239070A (en) | Method for repairing and strengthening surface of hot work die | |
| CN101934424B (en) | TB5/copper alloy vacuum electron beam welding method | |
| CN101434011A (en) | Middle-thickness magnesium alloy CO2 laser-MIG composite welding process | |
| CN104985326A (en) | Bilateral laser-InFocus electric arc composite welding method for T-type joint | |
| CN101255521B (en) | Hard alloy connecting piece | |
| CN113652683A (en) | Laser cladding nickel-based alloy powder process for gray cast iron primary mold glass mold | |
| CN102581587A (en) | Method for manufacturing high-efficiency diamond geological drills | |
| CN109202293B (en) | Processing method for laser-induced arc cladding of high-boron wear-resistant alloy | |
| CN111545917A (en) | Low-power laser-induced double-pulse TIG welding method for aluminum-based composite material | |
| WO2023162356A1 (en) | One-sided submerged arc welding method, welded joint, and production method for welded joint | |
| CN113510342B (en) | Low-preheating welding method for Q690-grade quenched and tempered steel medium plate for hydraulic support | |
| CN105149740A (en) | InFocus electric arc synchronous welding method for two sides of T-shaped connector | |
| CN109500477A (en) | A kind of repairing method with welding suitable for spheroidal graphite cast-iron | |
| CN115261870A (en) | Short-process composite ultra-high-speed laser cladding processing method based on Haokeng technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100818 Termination date: 20101205 |