CN106425328B - A kind of CMT welding procedures of QCr0.8 and high strength stainless steel - Google Patents
A kind of CMT welding procedures of QCr0.8 and high strength stainless steel Download PDFInfo
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- CN106425328B CN106425328B CN201611097079.XA CN201611097079A CN106425328B CN 106425328 B CN106425328 B CN 106425328B CN 201611097079 A CN201611097079 A CN 201611097079A CN 106425328 B CN106425328 B CN 106425328B
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- stainless steel
- high strength
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- strength stainless
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- 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
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
-
- 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
- B23K9/32—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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/18—Dissimilar materials
- B23K2103/22—Ferrous alloys and copper or alloys thereof
Abstract
The invention discloses the CMT welding procedures of a kind of QCr0.8 and high strength stainless steel, and the technique is by polishing high strength stainless steel；Polishing QCr0.8 parts；The two after polishing is agreed with；It is welded；Five steps of after welding treatment apply to CMT welding procedures in the welding of QCr0.8 and high strength stainless steel, the structure that QCr0.8 parts and the plumb joint of high strength stainless steel are arranged to two kinds is different, it can be very good to ensure with the difference of 1 wall thickness of QCr0.8 parts, by the firm welding of different welding point enhancings between the two, while CMT welding procedures can ensure the quality and stabilization of welding.
Description
Technical field
The present invention relates to welding technique fields, specially the CMT welding procedures of a kind of QCr0.8 and high strength stainless steel.
Background technology
The welding of QCr0.8 chromium-bronzes and high strength stainless steel is carried out using manual argon arc welding at this stage.This method is first to steel
Side welding surface is polished, then using copperwelding rod, using manual argon arc welding method welding QCr0.8 chromium-bronzes with it is high-strength
Stainless steel lap joint, the heat dissipation of QCr0.8 chromium-bronzes is very fast, to ensure that it is effective molten that the fusion of copper side well, at welding point is formed
Pond, generally carries out QCr0.8 chromium-bronzes by the way of low weldering speed, high current and high strength stainless steel manual argon arc welding welds.But
It is that it is excessive that such method be easy to cause thermal weld stress.When heat input increases, fire check is easily generated in face of weld, meanwhile,
The contamination cracking of liquid copper will be formed in the steel side of weld seam internal copper-steel junction, thereby results in the intensity of copper-steel attachment weld
It is greatly reduced.Meanwhile welding line joint is more during manual welding, joint is repeatedly heated due to the starting the arc, receipts arc so that crystal grain is seriously grown
Greatly, so plasticity of weld seam etc. is remarkably decreased herein；Cold metal transfer technology (being commonly called as CMT) is a kind of brand-new in the prior art
Welding procedure, being used in the welding procedure of QCr0.8 chromium-bronzes and high strength stainless steel can not only realize in welding process
Hot and cold alternation, moreover it is possible to molten drop be avoided to penetrate realization without droplet transfer and the good metallurgical connection of splashing, the method is applied into wall
In the welding procedure of the QCr0.8 chromium-bronzes and high strength stainless steel (wall thickness is more than or equal to 10mm) of thick 8mm -12mm.
The content of the invention
It is an object of the invention to provide the CMT welding procedures of a kind of QCr0.8 and high strength stainless steel, to solve the above-mentioned back of the body
The problem of being proposed in scape technology.
To achieve the above object, the present invention provides following technical solution：The CMT of a kind of QCr0.8 and high strength stainless steel is welded
Technique, including QCr0.8 parts and high strength stainless steel, which comprises the following steps：
S1：On dedicated numerical control shearing machine, polishing shearing pretreatment processing is carried out to high strength stainless steel, it is ensured that high strength stainless steel
Surface smoothness≤2.8um；The lap joint with certain tilted shape is polished at the plumb joint of high strength stainless steel；
S2：Polishing processing is carried out to QCr0.8 parts, polish the effigurate lap joint of tool；When QCr0.8 parts
When wall thickness is more than 4mm, inclined wall is processed to QCr0.8 parts；When the wall thickness of QCr0.8 parts is less than 4mm, to QCr0.8 zero
Part processes flange skew wall；
S3：By to-be-welded pieces QCr0.8 parts and high strength stainless steel clamping, ensure the lap joints of QCr0.8 parts with it is high-strength
The lap joint of stainless steel mutually agrees with, and the lap joint after agreeing with is placed in below bonding machine, and with fixture by QCr0.8 parts and height
Strong stainless steel is fixed；
S4：It is welded, controls speed of welding, welding current, weldingvoltage, wire feed rate, the amplitude of oscillation and the pendulum of bonding machine
Speed；
S5：After welding, when the temperature of commissure is down to 30 DEG C -40 DEG C, face of weld oxide layer is cleared up.
Preferably, in step S1 the shape for the lap joint that high strength stainless steel is polished according to the thickness of QCr0.8 parts and
It is fixed；When the wall thickness of QCr0.8 parts is more than 4mm, the lap joint of high strength stainless steel is the inclined wall processed with QCr0.8 parts
Matched flange plumb joint；When the wall thickness of QCr0.8 parts is less than 4mm, the lap joint of high strength stainless steel is and QCr0.8 zero
The matched spill soldering opening of flange skew wall that part processes.
Preferably, when the wall thickness of QCr0.8 parts is more than 4mm, between being left between the flange plumb joint and inclined wall
Gap, clearance distance L2：1.5mm≤L2≤2.5mm, angle is a between the inclined wall and high strength stainless steel upper surface：15°
≤a≤30°。
Preferably, when the wall thickness of QCr0.8 parts is less than 4mm, between being left between the spill soldering opening and flange skew wall
Gap, clearance distance L2：2.5mm≤L2≤3.5mm, angle is a between the flange skew wall and high strength stainless steel upper surface：
30°≤a≤35°。
Preferably, when the wall thickness of QCr0.8 parts is more than 4mm, speed of welding 40-55cm/min, welding current are
180-220A, weldingvoltage 18-29V, wire feed rate 7-9m/min, amplitude of oscillation 0.5mm, slew rate control are in 900cm/min.
Preferably, when the wall thickness of QCr0.8 parts is less than 4mm, speed of welding 28-34cm/min, welding current are
160-188A, weldingvoltage 12-22V, wire feed rate 4-7m/min, amplitude of oscillation 0.2mm, slew rate control are in 900cm/min.
Compared with prior art, the beneficial effects of the invention are as follows：The plumb joint of QCr0.8 parts and high strength stainless steel is set
Two kinds of different structures are set to, can be very good to ensure with the difference of 1 wall thickness of QCr0.8 parts, pass through different welding points
The firm welding of enhancing between the two, while CMT welding procedures can ensure the quality and stabilization of welding.
Description of the drawings
Fig. 1 is the first lap joint structure diagram of the invention；
Fig. 2 is the welding posture schematic diagram of the first lap joint structure type of the invention；
Fig. 3 is second of lap joint structure diagram of the invention；
Fig. 4 is the welding posture schematic diagram of second of lap joint structure type of the invention.
In figure：1QCr0.8 parts, 11 inclined walls, 12 flange skew walls, 2 high strength stainless steels, 21 flange plumb joints, 22 spills
Soldering opening.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment belongs to the scope of protection of the invention.
Embodiment 1
Refering to Fig. 1 and 2, the present invention provides a kind of technical solution：A kind of CMT Welders of QCr0.8 and high strength stainless steel
Skill, including QCr0.8 parts 1 and high strength stainless steel 2, which comprises the following steps：
S1：On dedicated numerical control shearing machine, polishing shearing pretreatment processing is carried out to high strength stainless steel, it is ensured that high strength stainless steel
Surface smoothness be 2um；The wall thickness of QCr0.8 parts is more than 4mm, and the plumb joint polishing of high strength stainless steel is welded for flange
First 21；
S2：The wall thickness of QCr0.8 parts is more than 4mm, and inclined wall 11 is processed to QCr0.8 parts；
S3：By to-be-welded pieces QCr0.8 parts and high strength stainless steel clamping, ensure 21 phase of inclined wall 11 and flange plumb joint
Agree with, the lap joint after agreeing with is placed in below bonding machine, and is fixed QCr0.8 parts and high strength stainless steel with fixture；
S4：It is welded, the speed of welding for controlling bonding machine is 45cm/min, welding current 200A, weldingvoltage are
18V, wire feed rate 8m/min, amplitude of oscillation 0.5mm, slew rate control are in 900cm/min；
S5：After welding, when the temperature of commissure is down to 30 DEG C, face of weld oxide layer is cleared up.
Embodiment 2
Refering to Fig. 3 and 4, the present invention provides a kind of technical solution：A kind of CMT Welders of QCr0.8 and high strength stainless steel
Skill, including QCr0.8 parts 1 and high strength stainless steel 2, which comprises the following steps：
S1：On dedicated numerical control shearing machine, polishing shearing pretreatment processing is carried out to high strength stainless steel, it is ensured that high strength stainless steel
Surface smoothness be 1.8um；The wall thickness of QCr0.8 parts is less than 4mm, and the plumb joint polishing of high strength stainless steel is welded for spill
Interface 22；
S2：The wall thickness of QCr0.8 parts is less than 4mm, and flange skew wall 12 is processed to QCr0.8 parts；
S3：By to-be-welded pieces QCr0.8 parts and high strength stainless steel clamping, ensure flange skew wall 12 and spill soldering opening 22
Mutually agree with, the lap joint after agreeing with is placed in below bonding machine, and is fixed QCr0.8 parts and high strength stainless steel with fixture；
S4：It is welded, the speed of welding for controlling bonding machine is 31cm/min, welding current 170A, weldingvoltage are
16V, wire feed rate 5m/min, amplitude of oscillation 0.2mm, slew rate control are in 900cm/min；
S5：After welding, when the temperature of commissure is down to 40 DEG C, face of weld oxide layer is cleared up.
The present invention structure that QCr0.8 parts 1 and the plumb joint of high strength stainless steel 2 are arranged to two kinds is different, can be fine
Guarantee with the difference of 1 wall thickness of QCr0.8 parts, by the firm welding of different welding point enhancings between the two, together
When CMT welding procedures can ensure welding quality and stabilization.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. the CMT welding procedures of a kind of QCr0.8 and high strength stainless steel, including QCr0.8 parts (1) and high strength stainless steel (2),
It is characterized in that, which comprises the following steps：
S1：On dedicated numerical control shearing machine, polishing shearing pretreatment processing is carried out to high strength stainless steel, it is ensured that the table of high strength stainless steel
Face finish≤2.8um；The lap joint with certain tilted shape is polished at the plumb joint of high strength stainless steel；
S2：Polishing processing is carried out to QCr0.8 parts, polish the effigurate lap joint of tool；When the wall thickness of QCr0.8 parts
During more than 4mm, inclined wall (11) is processed to QCr0.8 parts；When the wall thickness of QCr0.8 parts is less than 4mm, to QCr0.8 zero
Part processes flange skew wall (12)；
S3：By to-be-welded pieces QCr0.8 parts and high strength stainless steel clamping, ensure the lap joints of QCr0.8 parts with it is high-strength stainless
The lap joint of steel mutually agrees with, and the lap joint after agreeing with is placed in below bonding machine, and with fixture by QCr0.8 parts and it is high-strength not
Rust steel is fixed；
S4：It is welded, controls speed of welding, welding current, weldingvoltage, wire feed rate, the amplitude of oscillation and the slew rate of bonding machine；
S5：After welding, when the temperature of commissure is down to 30 DEG C -40 DEG C, face of weld oxide layer is cleared up.
2. the CMT welding procedures of a kind of QCr0.8 according to claim 1 and high strength stainless steel, it is characterised in that：Step
The shape for the lap joint that high strength stainless steel is polished is depending on the thickness of QCr0.8 parts in S1；When the wall thickness of QCr0.8 parts
During more than 4mm, the lap joint of high strength stainless steel is that the matched flange of the inclined wall (11) processed with QCr0.8 parts welds
Head (21)；When the wall thickness of QCr0.8 parts is less than 4mm, the lap joint of high strength stainless steel is convex to be processed with QCr0.8 parts
The matched spill soldering opening (22) of edge skew wall.
3. the CMT welding procedures of a kind of QCr0.8 according to claim 2 and high strength stainless steel, it is characterised in that：When
When the wall thickness of QCr0.8 parts is more than 4mm, gap, clearance distance are left between the flange plumb joint (21) and inclined wall (11)
For L2：1.5mm≤L2≤2.5mm, angle is a between the inclined wall (11) and high strength stainless steel upper surface：15°≤a≤
30°。
4. the CMT welding procedures of a kind of QCr0.8 according to claim 2 and high strength stainless steel, it is characterised in that：When
When the wall thickness of QCr0.8 parts is less than 4mm, gap, clearance gap are left between the spill soldering opening (22) and flange skew wall (12)
From for L2：2.5mm≤L2≤3.5mm, angle is a between the flange skew wall (12) and high strength stainless steel upper surface：30°≤a
≤35°。
5. the CMT welding procedures of a kind of QCr0.8 according to claim 1 and high strength stainless steel, it is characterised in that：When
When the wall thickness of QCr0.8 parts is more than 4mm, speed of welding 40-55cm/min, welding current 180-220A, weldingvoltage are
18-29V, wire feed rate 7-9m/min, amplitude of oscillation 0.5mm, slew rate control are in 900cm/min.
6. the CMT welding procedures of a kind of QCr0.8 according to claim 1 and high strength stainless steel, it is characterised in that：When
When the wall thickness of QCr0.8 parts is less than 4mm, speed of welding 28-34cm/min, welding current 160-188A, weldingvoltage are
12-22V, wire feed rate 4-7m/min, amplitude of oscillation 0.2mm, slew rate control are in 900cm/min.
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| CN201611097079.XA CN106425328B (en) | 2016-12-02 | 2016-12-02 | A kind of CMT welding procedures of QCr0.8 and high strength stainless steel |
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| CN201611097079.XA CN106425328B (en) | 2016-12-02 | 2016-12-02 | A kind of CMT welding procedures of QCr0.8 and high strength stainless steel |
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| CN106425328B true CN106425328B (en) | 2018-05-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018107313A1 (en) * | 2016-12-12 | 2018-06-21 | 机械科学研究总院青岛分院有限公司 | Qcr0.8 and high-strength stainless steel cmt welding process |
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| US4722125A (en) * | 1984-05-25 | 1988-02-02 | Peng Da H | Method for producing a tungsten carbide tip punch |
| DE102004029230A1 (en) * | 2004-06-17 | 2006-01-12 | Thyssenkrupp Stahl Ag | Metallic join partners` connecting method for manufacturing vehicle body, involves grouting two join partners, so that material of latter partner penetrates into recess of former partner to produce fixed connection between partners |
| CN1988979A (en) * | 2004-06-02 | 2007-06-27 | 美铝公司 | Gas metal buried arc welding of lap-penetration joints |
| CN101758326A (en) * | 2009-11-04 | 2010-06-30 | 中国船舶重工集团公司第七二五研究所 | Plasma-arc welding method of cupronickel with thickness of 2-20 mm |
| JP2011067830A (en) * | 2009-09-24 | 2011-04-07 | Nippon Steel Techno Research Corp | Method of joining copper sheet and steel sheet by laser |
| CN102179678A (en) * | 2011-06-02 | 2011-09-14 | 四川省南充东力连杆有限公司 | Method for producing axle by welding medium plates |
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2016
- 2016-12-02 CN CN201611097079.XA patent/CN106425328B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4722125A (en) * | 1984-05-25 | 1988-02-02 | Peng Da H | Method for producing a tungsten carbide tip punch |
| CN85108448A (en) * | 1984-10-13 | 1986-08-13 | 肯纳科特公司 | Welding point |
| CN1988979A (en) * | 2004-06-02 | 2007-06-27 | 美铝公司 | Gas metal buried arc welding of lap-penetration joints |
| DE102004029230A1 (en) * | 2004-06-17 | 2006-01-12 | Thyssenkrupp Stahl Ag | Metallic join partners` connecting method for manufacturing vehicle body, involves grouting two join partners, so that material of latter partner penetrates into recess of former partner to produce fixed connection between partners |
| JP2011067830A (en) * | 2009-09-24 | 2011-04-07 | Nippon Steel Techno Research Corp | Method of joining copper sheet and steel sheet by laser |
| CN101758326A (en) * | 2009-11-04 | 2010-06-30 | 中国船舶重工集团公司第七二五研究所 | Plasma-arc welding method of cupronickel with thickness of 2-20 mm |
| CN102179678A (en) * | 2011-06-02 | 2011-09-14 | 四川省南充东力连杆有限公司 | Method for producing axle by welding medium plates |
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