CN102267000B - Metal active gas (MAG) welding method for butting quenched low-alloy super-high-strength steel and high-quality carbon structural steel - Google Patents
Metal active gas (MAG) welding method for butting quenched low-alloy super-high-strength steel and high-quality carbon structural steel Download PDFInfo
- Publication number
- CN102267000B CN102267000B CN 201010188996 CN201010188996A CN102267000B CN 102267000 B CN102267000 B CN 102267000B CN 201010188996 CN201010188996 CN 201010188996 CN 201010188996 A CN201010188996 A CN 201010188996A CN 102267000 B CN102267000 B CN 102267000B
- Authority
- CN
- China
- Prior art keywords
- welding
- 35crmnsia
- steel
- mag
- strength steel
- 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
Images
Landscapes
- Arc Welding In General (AREA)
Abstract
The invention relates to a metal active gas (MAG) welding method for butting quenched low-alloy super-high-strength steel and high-quality carbon structural steel and a low-alloy super-high-strength steel MAG welding method, which solve the welding technical problems that the thickness difference and the material performance difference of heterogeneous steel, namely the quenched low-alloy super-high-strength steel and the high-quality carbon structural steel, are large and the weldability of the quenched super-high-strength steel is low. The MAG welding method comprises the following main steps of: machining a part to be welded; quenching and tempering a 35CrMnSiA barrel piece; preheating, tacking and welding; and slowly cooling the 35CrMnSiA barrel piece; and detecting the 35CrMnSiA barrel piece. By the MAG welding method, the weldability of the quenched super-high-strength steel and the carbon structural steel is enhanced; fusion of a welding line is high; and through penetrant flaw detection and coloring flaw detection, the most sensitive crack defects of the super-high-strength steel are not found in a welding bead and a heat affected zone, so the shape of the welding line is good. The MAG welding method belongs to semi-automatic welding; and compared with manual arc welding, the MAG welding method has the advantages of reducing arc striking points and arc receiving points, so that welding defects can be reduced effectively.
Description
Technical field
The present invention relates to a kind of low-alloy super-high strength steel MAG welding method, be specifically related to a kind of low-alloy super-high strength steel quenching back and dock circumferential weld MAG welding method with the carbon constructional quality steel dissimilar steel.
Background technology
Low-alloy super-high strength steel (35CrMnSiA) can the non-constant of brave property, the dissimilar steel butt joint welding after especially low-alloy super-high strength steel (35CrMnSiA) quenches is unusual difficulty especially.At present, (performance is σ in the back not provide low-alloy super-high strength steel (35CrMnSiA) to quench in the prior art
bThe MAG welding method of>=1620MPa, HRC45～55, Ak>=36J) and carbon constructional quality steel (08Al) xenogenesis steel.
Summary of the invention
The purpose of this invention is to provide a kind of low-alloy super-high strength steel back of quenching and dock MAG welding method (dissimilar steel MAG welding method) with carbon constructional quality steel, quench to solve the low-alloy super-high strength steel that the back is bigger with carbon constructional quality steel dissimilar steel thickness difference, difference in material properties greatly, the solder technology problem of solderability difference after the super-high strength steel quenching.
The present invention solves the problems of the technologies described above the technical scheme of taking to be: it is that 35CrMnSiA, carbon constructional quality steel are the cylindrical element butt joint circumferential weld MAG welding of the xenogenesis steel of 08Al that welding method according to the invention is based on the low-alloy super-high strength steel, and the detailed process of said welding method is:
The soldering opening of step 1, processing to-be-welded pieces 35CrMnSiA barrier part (1), the soldering opening of to-be-welded pieces 08Al barrier part (2): the welding ends of to-be-welded pieces 35CrMnSiA barrier part 1 that will be thicker is processed into the lock seaming groove type; Said lock seaming groove type is meant that the welding ends of 35CrMnSiA barrier part 1 is the truncated cone-shaped of convergent, will be processed into straight flange than the welding ends end face of thin to-be-welded pieces 08Al barrier part 2;
Behind step 3, the completing steps two, two barrier parts to be welded are welded, specifically may further comprise the steps:
Step 3 (one), preheating: before the tack welding, to preheating in 35CrMnSiA barrier part 1 stove, preheat temperature is 155 ℃～170 ℃, and temperature retention time 120 ± 5 minutes is heated evenly it; Carry out tack welding after again two barrier parts to be welded being seated in assembling jig;
Step 3 (two), tack welding: the test specimen that preheating meets the demands is come out of the stove, and two weldments are assemblied in tack welding in the automatic tumbler, at the even welding of periphery 6 points of welding region, solder joint length 10mm～15mm; Behind the tack welding, two barrier parts to be welded are carried out preheating in the stove, preheat temperature is 155 ℃～170 ℃, temperature retention time 120 ± 5 minutes;
Step 3 (three), welding: start the device that rotates automatically, control welding gun angle [alpha] and welding position; Welding gun angle (α) is the tangential direction of welding position and the angle of welding gun, and welding gun angle (α) is 65 °～75 °; The welding position is 15 °～20 ° by confirming through the diameter of workpiece peak and through the angle (β) between the diameter of current solder joint through the diameter of workpiece peak and through the angle between the diameter of current solder joint (β);
The advantage of welding method according to the invention has:
This method has realized the reliable soldering of the bigger low-alloy super-high strength steel 35CrMnSi (back of quenching) of two butt joint part thickness differences and structural carbon steel 08Al xenogenesis steel.Concrete advantage is mainly reflected in following two aspects: one, can guarantee super-high strength steel quenching back and structural carbon steel solderability.The weld seam fusion is good, detects a flaw through osmosis---and the crack defect that super-high strength steel is the most responsive is not found in dye penetrant inspection, welding bead and heat affected area, and appearance of weld is good.Two, the MAG welding method belongs to semiautomatic welding than the manual electric arc welding minimizing welding starting the arc and receipts acnode, can effectively reduce the generation of weld defect.Method of the present invention is particularly useful for 35CrMnSiA quench back and 08Al cylinder butt joint welding, can be generalized to quench back and phosphorus content of 35CrMnSiA and quenches back and phosphorus content less than 0.30% structural carbon steel butt welding, 30CrMnSiNi less than 0.30% structural carbon steel butt welding, 30CrMnSiA
2A quenches back and phosphorus content less than 0.30% structural carbon steel butt welding.
Description of drawings
Assembling sketch map when Fig. 1 welds for 35CrMnSiA barrier part 1 and 08Al barrier part 2 (Reference numeral 3 expression weld seams), Fig. 2 are that the position of welding gun 4 and to-be-welded pieces concerns sketch map (Reference numeral 5 expression welding wires).
The specific embodiment
The specific embodiment one: as illustrated in fig. 1 and 2; It is that 35CrMnSiA, carbon constructional quality steel are the cylindrical element butt joint circumferential weld MAG welding of the xenogenesis steel of 08Al that the said welding method of this embodiment is based on the low-alloy super-high strength steel, and the detailed process of said welding method is:
The soldering opening of step 1, processing to-be-welded pieces 35CrMnSiA barrier part 1, the soldering opening of to-be-welded pieces 08Al barrier part 2: the welding ends of to-be-welded pieces 35CrMnSiA barrier part 1 that will be thicker is processed into lock seaming (lock seaming is also promptly locked at the end) groove type; Said lock seaming groove type is meant that the welding ends of 35CrMnSiA barrier part 1 is the truncated cone-shaped of convergent (the axial cross section profile of the curved surface of truncated cone-shaped is oblique line or camber line), will be processed into straight flange (being welding ends end face and axis normal) than the welding ends end face of thin to-be-welded pieces 08Al barrier part 2;
Described thick lock seaming shape groove, thin part guarantees complete thick straight flange, the intact lock seaming socket fit form that showed;
" oil " as hardening media described in the step 2 is quenching oil, as: " the quick bright quenc hing oil of Jin Yu YIS-2 " that available Beijing China sharp fine chemistry industry company produces;
Behind step 3, the completing steps two, two barrier parts to be welded (35CrMnSiA barrier part and 108Al barrier part 2) are welded, specifically may further comprise the steps:
Step 3 (one), preheating: before the tack welding, to preheating in 35CrMnSiA barrier part 1 stove, preheating (heating) temperature is 155 ℃～170 ℃, and temperature retention time 120 ± 5 minutes is heated evenly it; Carry out tack welding (welding ends of 08Al barrier part 2 is taken the middle part of the lock seaming groove of the welding ends that is enclosed within 35CrMnSiA barrier part 1) after again two barrier parts to be welded being seated in assembling jig;
Step 3 (two), tack welding: the test specimen that preheating meets the demands is come out of the stove, and two weldments are assemblied in tack welding in the automatic tumbler, at the even welding of periphery 6 points of welding region, solder joint length 10mm～15mm; Behind the tack welding, two barrier parts to be welded are carried out (35CrMnSiA barrier part and 108Al barrier part 2) carry out preheating in the stove, preheat temperature is 155 ℃～170 ℃, temperature retention time 120 ± 5 minutes;
Step 3 (three), welding: start the device that rotates automatically, the control welding gun (or the angle of welding wire, the angle of welding gun is consistent with the angle of welding wire) angle [alpha] and welding position; The welding gun angle [alpha] is the tangential direction of welding position and the angle of welding gun, and the welding gun angle [alpha] is 65 °～75 °; The welding position is 15 °～20 ° by confirming through the diameter of workpiece peak and through the angle β between the diameter of current solder joint through the diameter of workpiece peak and through the angle β between the diameter of current solder joint;
The specific embodiment two: as shown in Figure 1, this embodiment is in step 1, and the wall thickness t of said 08Al barrier part 2 is 1.5mm, and the wall thickness of 35CrMnSiA barrier part 1 is 5～8 times of wall thickness of 08Al barrier part 2.Other step and the specific embodiment one or identical.
The specific embodiment three: this embodiment is in step 3 () and three (two), and the forward and backward preheat temperature of tack welding will be lower than 50 ℃ of temperatures; Otherwise softening problem can appear in super-high strength steel (the low-alloy super-high strength steel is 35CrMnSiA), influences welding quality.Other step is identical with the specific embodiment one or two.
The specific embodiment four: this embodiment is (referring to table 1) in step 3, the welding wire trade mark that uses as HS-80, gage of wire as Φ 1.2mm, welding current as 180A～220A, weldingvoltage as 20V～22V, polarity dc reverse connection, workpiece alignment speed be 310～350mm/min, protective gas for percentage by volume by 85%～90% Ar and 15%～10% CO
2The mist of forming.Selection of wlding (the welding wire trade mark is the wlding of HS-80) and selection of process parameters have been avoided the generation of crackle, greatly carry and have done solderability.Other step is identical with the specific embodiment one, two or three.
Welding condition is seen table 1
| The welding wire trade mark | Gage of wire (mm) | Welding current (A) | Weldingvoltage (V) | Speed of welding (mm/mi n) | Gas flow (Ar and CO 2Gaseous mixture) (L/min) | Weld polarity |
| HS- 80 | φ1.2 | 180～ 220 | 20～22 | 310～350 | ?11～17 | Dc reverse connection |
Claims (4)
1. the MAG welding method is docked in a low-alloy super-high strength steel quenching back with carbon constructional quality steel; It is that 35CrMnSiA, carbon constructional quality steel are the cylindrical element butt joint circumferential weld MAG welding of the xenogenesis steel of 08Al that said welding method is based on the low-alloy super-high strength steel, and it is characterized in that: the detailed process of said welding method is:
The soldering opening of step 1, processing to-be-welded pieces 35CrMnSiA barrier part (1), the soldering opening of to-be-welded pieces 08Al barrier part (2): the welding ends of to-be-welded pieces 35CrMnSiA barrier part (1) that will be thicker is processed into the lock seaming groove type; Said lock seaming groove type is meant that the welding ends of 35CrMnSiA barrier part (1) is the truncated cone-shaped of convergent, will be processed into straight flange than the welding ends end face of thin to-be-welded pieces 08Al barrier part (2);
Step 2, with 35CrMnSiA barrier part 1 quench, tempering: 35CrMnSiA barrier part (1) is quenched earlier; Charging temperature≤500 ℃, 680 ℃ of preheat temperatures, temperature retention time 180 ± 5 minutes; 900 ± 10 ℃ of heating-up temperatures; Temperature retention time 90 ± 5 minutes adopts oil as hardening media, 18～20 minutes cool times; Carry out tempering again, temperature is 230 ± 10 ℃, and temperature retention time 180 ± 5 minutes adopts water as cooling medium, 15～18 minutes cool times;
Behind step 3, the completing steps two, two barrier parts to be welded are welded, specifically may further comprise the steps:
Step 3 (one), preheating: before the tack welding, to preheating in 35CrMnSiA barrier part (1) stove, preheat temperature is 155 ℃～170 ℃, and temperature retention time 120 ± 5 minutes is heated evenly it; Carry out tack welding after again two barrier parts to be welded being seated in assembling jig;
Step 3 (two), tack welding: the test specimen that preheating meets the demands is come out of the stove, and two weldments are assemblied in tack welding in the automatic tumbler, at the even welding of periphery 6 points of welding region, solder joint length 10mm～15mm; Behind the tack welding, two barrier parts to be welded are carried out preheating in the stove, preheat temperature is 155 ℃～170 ℃, temperature retention time 120 ± 5 minutes;
Step 3 (three), welding: start the device that rotates automatically, control welding gun angle [alpha] and welding position; Welding gun angle (α) is the tangential direction of welding position and the angle of welding gun, and welding gun angle (α) is 65 °～75 °; The welding position is 15 °～20 ° by confirming through the diameter of workpiece peak and through the angle (β) between the diameter of current solder joint through the diameter of workpiece peak and through the angle between the diameter of current solder joint (β);
Step 4, slow cooling: will weld the test specimen of accomplishing and go into stove immediately, 150 ℃～170 ℃ of furnace temperature, temperature retention time 120 ± 5 minutes, the air cooling of coming out of the stove then is to room temperature;
Step 5, detection: adopt osmosis to detect welding bead, face of weld is not permitted has crackle, pore; Observe undercut, overlap defective.
2. the MAG welding method is docked in low-alloy super-high strength steel quenching according to claim 1 back with carbon constructional quality steel; It is characterized in that: in step 1; The wall thickness (t) of said 08Al barrier part (2) is 1.5mm, and the wall thickness of 35CrMnSiA barrier part (1) is 5～8 times of wall thickness of 08Al barrier part (2).
3. low-alloy super-high strength steel according to claim 1 docks the MAG welding method with carbon constructional quality steel after quenching, and it is characterized in that: in step 3 () and three (two), the forward and backward preheat temperature of tack welding will be lower than 50 ℃ of temperatures.
4. dock the MAG welding method with carbon constructional quality steel according to claim 1,2 or 3 described low-alloy super-high strength steels quenching backs; It is characterized in that: in step 3, the welding wire trade mark that uses as HS-80, gage of wire as Φ 1.2mm, welding current as 180A～220A, weldingvoltage as 20V～22V, polarity dc reverse connection, workpiece alignment speed be 310～350mm/min, protective gas for percentage by volume by 85%～90% Ar and 15%～10% CO
2The mist of forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010188996 CN102267000B (en) | 2010-06-02 | 2010-06-02 | Metal active gas (MAG) welding method for butting quenched low-alloy super-high-strength steel and high-quality carbon structural steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010188996 CN102267000B (en) | 2010-06-02 | 2010-06-02 | Metal active gas (MAG) welding method for butting quenched low-alloy super-high-strength steel and high-quality carbon structural steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102267000A CN102267000A (en) | 2011-12-07 |
| CN102267000B true CN102267000B (en) | 2012-12-12 |
Family
ID=45049566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010188996 Active CN102267000B (en) | 2010-06-02 | 2010-06-02 | Metal active gas (MAG) welding method for butting quenched low-alloy super-high-strength steel and high-quality carbon structural steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102267000B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102873462A (en) * | 2012-10-13 | 2013-01-16 | 南通国电电站阀门有限公司 | Process for welding swing check valve and matching pipe |
| CN103231153A (en) * | 2013-03-13 | 2013-08-07 | 哈尔滨建成集团有限公司 | A method for welding quenched ultra-high strength steel with common carbon structural steel |
| CN108941856B (en) * | 2018-07-26 | 2021-01-26 | 中车青岛四方机车车辆股份有限公司 | MAG welding circumferential welding method |
| CN113369645A (en) * | 2021-05-26 | 2021-09-10 | 湖北三江航天江北机械工程有限公司 | Welding and heat treatment method for large-thickness aeroelastic shell |
| CN113664340B (en) * | 2021-07-16 | 2022-10-18 | 河南北方红阳机电有限公司 | Welding method for grooved ring assembly in thin-wall high-strength steel cylindrical shell assembly |
| CN115041785B (en) * | 2022-05-30 | 2024-03-15 | 河南北方红阳机电有限公司 | Manual TIG welding method based on low-alloy high-strength dissimilar steel gluing sleeve joint assembly |
| CN115156758B (en) * | 2022-07-18 | 2023-11-10 | 北京钢研高纳科技股份有限公司 | Welding wire for GH4202 alloy dissimilar welding and welding method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101337298A (en) * | 2007-07-05 | 2009-01-07 | 四川神坤装备股份有限公司 | Low-alloy high-strength steel welding process |
| CN101559549A (en) * | 2009-05-25 | 2009-10-21 | 武昌船舶重工有限责任公司 | Process method for rewelding of high strength steel |
| CN101564783A (en) * | 2009-06-05 | 2009-10-28 | 武汉钢铁(集团)公司 | Manual welding method applied to butt joint of high-tensile steel |
| CN101700600A (en) * | 2009-11-19 | 2010-05-05 | 河南第一火电建设公司 | Welding process method of novel Q460 steel for transmission tower |
-
2010
- 2010-06-02 CN CN 201010188996 patent/CN102267000B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101337298A (en) * | 2007-07-05 | 2009-01-07 | 四川神坤装备股份有限公司 | Low-alloy high-strength steel welding process |
| CN101559549A (en) * | 2009-05-25 | 2009-10-21 | 武昌船舶重工有限责任公司 | Process method for rewelding of high strength steel |
| CN101564783A (en) * | 2009-06-05 | 2009-10-28 | 武汉钢铁(集团)公司 | Manual welding method applied to butt joint of high-tensile steel |
| CN101700600A (en) * | 2009-11-19 | 2010-05-05 | 河南第一火电建设公司 | Welding process method of novel Q460 steel for transmission tower |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102267000A (en) | 2011-12-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102267000B (en) | Metal active gas (MAG) welding method for butting quenched low-alloy super-high-strength steel and high-quality carbon structural steel | |
| CN101543926B (en) | Overlaying welding technology of ductile cast iron roller | |
| CN102240841B (en) | Submerged-arc welding process for T-type joint for extra thick steel plate | |
| EP2258493B1 (en) | Welded steel pipe welded with a high energy density beam, and a manufacturing method therefor | |
| CN101417364B (en) | Semi-automatic welding method of metal flux cored filler rod conduit root | |
| CN104858555A (en) | Pressure pipeline welding process | |
| CN110421238B (en) | Welding process for butt welding of high-strength barrel | |
| CN101391338A (en) | Ferritic steel barrel butt-junction circular-seam hot-wire TIG multi-layer multipath welding method | |
| CN105195872A (en) | Double-sided submerged arc back-chipping-free welding technology for pipeline steel | |
| CN101850460A (en) | Welding process of 12Cr1MoV high-pressure pipeline CO2 semiautomatic or automatic gas shielded welding | |
| CN102294545B (en) | Laser penetration welding seam formation control method for Hass alloy conductive roller | |
| CN109317789B (en) | Welding method for surfacing pipe plate of heat exchanger and T91 heat exchange pipe | |
| CN101108443A (en) | Installing and soldering technique of inlet, outlet slip ring of large-scale sliding crawler mill barrel | |
| CN105033475A (en) | Steel-side-high-frequency-induction-heating-assisted friction stir welding method for alumimum-steel material butt joint | |
| CN105057844A (en) | Welding repair method for cracks on furnace shell of blast furnace | |
| CN1935441B (en) | Water-wheel generator rotor support hub defect treatment method | |
| CN102398105A (en) | Process for integral hardening and tempering of X80 steel-grade automatic submerged arc welding pipe fittings | |
| CN104625322A (en) | Large non-standard device thick-plate all-position welding method | |
| CN112453656A (en) | Welding method of thin-wall thick high-strength steel plate | |
| CN105364430B (en) | The method for laser welding that a kind of thin plate edge joint synchronously rolls | |
| CN101433989B (en) | Method for welding cold-expansion tube production line draw rod | |
| CN111496357A (en) | Transverse welding method for BB41-BF hot blast furnace shell | |
| CN112621107A (en) | Flash welding method for straight seam of high-strength steel wheel rim | |
| CN111906414A (en) | Large-gap multilayer stepping argon arc welding back cover repairing method for carbon steel pipeline and container | |
| CN103934553A (en) | Technology for adding chromium alloy to steel piston ring groove in welding mode |
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 |