CN109706402A - A kind of preparation method of two phase stainless steel gas metal-arc welding silk - Google Patents
A kind of preparation method of two phase stainless steel gas metal-arc welding silk Download PDFInfo
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- CN109706402A CN109706402A CN201811609025.6A CN201811609025A CN109706402A CN 109706402 A CN109706402 A CN 109706402A CN 201811609025 A CN201811609025 A CN 201811609025A CN 109706402 A CN109706402 A CN 109706402A
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Abstract
The invention discloses a kind of preparation methods of two phase stainless steel gas metal-arc welding silk; peeling, epithelium processing, thick pumping, pickling, annealing, sanding and final process are successively carried out to the two-phase stainless steel wire rod formed with specified chemical; the two phase stainless steel gas metal-arc welding silk surface-brightening being prepared; the defects of not drawing trace, crackle, warping, while microstructure fine uniform.The two phase stainless steel gas metal-arc welding silk excellent in mechanical performance; its tensile strength is 1100~1300MPa; elongation percentage is 5~10%; HRC hardness is 25~30; and there is excellent corrosion resistance and anticorrosion stress-resistant cracking performance; it can include working in a variety of corrosive medium environment such as sulfuric acid, hydrochloric acid, phosphoric acid and caustic alkali; it is within -40 DEG C in ambient temperature limit; it can be widely used in offshore engineering structure welding, effectively improve welding structure anti-spot corrosion and anticorrosion stress-resistant cracking performance in the seawater.
Description
Technical field
The present invention relates to a kind of preparation method of welding wire, specifically a kind of two phase stainless steel gas metal-arc welding silk
Preparation method.
Background technique
With the continuous development of the manufacturing industry such as domestic nuclear power, super (super-) critical boiler, ocean engineering, long-distance transport pipes and new
The continuous promotion of steel grade product quality, each type III pressure vessel, offshore production platform etc. are (or low to high parameter, high temperature, high pressure
Temperature) direction develops, and operating condition is more and more harsher, proposes more strict requirements to welding material product quality.
2209 Series Welder materials are developed with the appearance of second generation duplex stainless steel 2205, but current material
Mechanical property, welding usability and the corrosion resistance of material etc. are still to be improved.Because of two phase stainless steel consumable electrode gas-arc
Welding wire production long flow path, control difficulty is big, is applied to the solid weldering of high-quality two phase stainless steel gas shield of special industry at present
Silk still needs to import.
Summary of the invention
The technical problem to be solved by the present invention is in view of the deficiencies of the prior art, provide a kind of two phase stainless steel fusing
The preparation method of pole gas protecting welding wire, the two phase stainless steel gas metal-arc welding silk excellent in mechanical performance being prepared,
Its tensile strength is 1100~1300MPa, and elongation percentage is that 5~10%, HRC hardness is 25~30, and has excellent corrosion resistance
It can include in a variety of corrosive medium environment such as sulfuric acid, hydrochloric acid, phosphoric acid and caustic alkali with anticorrosion stress-resistant cracking performance
Work is that can be widely used in offshore engineering structure welding within -40 DEG C, effectively improve welding in ambient temperature limit
Structure anti-spot corrosion and anticorrosion stress-resistant cracking performance in the seawater.
The technical scheme of the invention to solve the technical problem is: a kind of two phase stainless steel consumable electrode gas-arc
The preparation method of welding wire, comprising the following steps:
Step 1: peeling: preparing the two-phase stainless steel wire rod of Ф 5.5mm, the weight percent composition of the two-phase stainless steel wire rod
Include: Cr21.0~23.5%, Ni7.5~9.5%, Mo2.5~3.5%, Mn0.5~2.0%, C≤0.03%, Si≤0.9%, P≤
0.03%, S≤0.01%, Cu≤0.4%, N≤0.2%, surplus are Fe and inevitable impurity；With 7~8m/ on peeling machine
The speed peeling of min is to Ф 5.35mm；
Step 2: epithelium is handled: in the Metal Surface Phosphate Treating Area equipped with epithelium agent solution to the two phase stainless steel wire surface of Ф 5.35 into
The processing of row epithelium, is dried later；
Step 3: thick take out: the two-phase stainless steel wire rod that epithelium is handled and dried carries out single track or multiple tracks drawing on wire drawing machine,
Total draft is 28~45%；
Step 4: pickling: the two-phase stainless steel wire rod after thick take out is carried out cathodic pickling in descaling bath；
Step 5: annealing: the two-phase stainless steel wire rod after pickling is carried out to 1000~1080 DEG C of online bright annealing, the two-phase
The Trace speed of STAINLESS STEEL WIRE in the lehr is 1.5~3m/min；Room is chilled in 1~3min after line bright annealing
Temperature；
Step 6: sanding: the two-phase stainless steel wire rod after annealing is carried out to circulating type polishing, polishing on belt grinder；
Step 7: final process: the two-phase stainless steel wire rod after sanding being carried out single track or multiple tracks drawing on wire drawing machine, is always subtracted
Face rate is 38~50%, is drawn to Ф 3.2mm, price fixing packaging, that is, be prepared two phase stainless steel gas metal-arc welding silk at
Product.
Preferably, in the microstructure for the two phase stainless steel gas metal-arc welding silk finished product being prepared, iron element
The area fraction of body is 50~75%, and the content of austenite is 25~50%.
Preferably, film agent used is the model PM-02's that Na Tai Chemical Co., Ltd. in Hebei provides in step 2
Product, the specific gravity of the epithelium agent solution are 1.13~1.15g/cm3, the temperature of the epithelium agent solution is 70~110
DEG C, epithelium handles the time as 5~30min；The drying temperature is 70~160 DEG C, and drying time is 30~50min.
Preferably, the concentration of the sulfuric acid solution contained in descaling bath is 180~280g/L, Faradaic current in step 4
For 300~400A, decomposition voltage is 1~10V.
Preferably, abrasive band used is the aluminum oxide sand band of 320# in step 6.
Compared with prior art, the present invention has the advantage that preparation method of the present invention with specified chemical to forming
Two-phase stainless steel wire rod successively carries out peeling, epithelium processing, thick pumping, pickling, annealing, sanding and final process, at peeling, epithelium
Reason, pickling, sanding can ensure that wire rod is free of surface defects, in conjunction with annealing and multiple tracks drawing and draft control, can make to be prepared
Two phase stainless steel gas metal-arc welding silk surface-brightening, the defects of not drawing trace, crackle, warp, while can make to prepare
Obtained two phase stainless steel gas metal-arc welding silk microstructure fine uniform.The two phase stainless steel that the present invention is prepared
Gas metal-arc welding silk excellent in mechanical performance, tensile strength are 1100~1300MPa, and elongation percentage is that 5~10%, HRC is hard
Degree is 25~30, and has excellent corrosion resistance and anticorrosion stress-resistant cracking performance, can include sulfuric acid, hydrochloric acid, phosphorus
It works in a variety of corrosive medium environment such as acid and caustic alkali, is that can be widely used within -40 DEG C in ambient temperature limit
In offshore engineering structure welding, welding structure anti-spot corrosion and anticorrosion stress-resistant cracking performance in the seawater are effectively improved.The present invention
The two phase stainless steel gas metal-arc welding silk being prepared can be used for welding the two-phases such as SAF2304, S31803, S32205 not
Become rusty steel, short arc welding, the injection for the pipe-line systems such as ocean platform oil gas, petrochemical equipment, flow line, riser etc.
The welding such as arc welding or pulse electric arc welding.
Detailed description of the invention
Fig. 1 is the metallograph (1000 for the two phase stainless steel gas metal-arc welding silk finished product that embodiment 1 is prepared
×)；
Fig. 2 is the metallograph (1000 ×) for the two phase stainless steel gas metal-arc welding silk finished product that embodiment 2 is prepared.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
A kind of preparation method of two phase stainless steel gas metal-arc welding silk of embodiment 1, comprising the following steps:
Step 1: peeling: preparing the two-phase stainless steel wire rod of Ф 5.5mm, the weight percent composition of the two-phase stainless steel wire rod
Include: Cr21.8%, Ni7.8%, Mo2.6%, Mn0.7%, C≤0.03%, Si≤0.9%, P≤0.03%, S≤0.01%, Cu≤
0.4%, N≤0.2%, surplus are Fe and inevitable impurity；With the speed peeling of 7m/min to Ф on peeling machine
5.35mm；
Step 2: epithelium is handled: in the Metal Surface Phosphate Treating Area equipped with epithelium agent solution to the two phase stainless steel wire surface of Ф 5.35 into
The processing of row epithelium, is dried later；Wherein, the specific gravity of epithelium agent solution is 1.13g/cm3, the temperature of epithelium agent solution is 85 DEG C,
Epithelium handles the time as 18min；Drying temperature is 120 DEG C, drying time 35min；
Step 3: thick take out: the two-phase stainless steel wire rod that epithelium is handled and dried carries out drawing on wire drawing machine, by Ф 5.35mm
Ф 4.8mm is drawn to draw Ф 4.3mm；
Step 4: pickling: the two-phase stainless steel wire rod after thick take out being carried out cathodic pickling in descaling bath, is contained in descaling bath
The concentration of sulfuric acid solution is 200g/L, Faradaic current 350A, decomposition voltage 5V；
Step 5: annealing: the two-phase stainless steel wire rod after pickling is carried out to 1020 DEG C of online bright annealing, the two phase stainless steel
The Trace speed of wire rod in the lehr is 1.5m/min；Room temperature is chilled in 1~2min after line bright annealing；
Step 6: sanding: the two-phase stainless steel wire rod after annealing is carried out to circulating type polishing, polishing on belt grinder,
In, abrasive band used is the aluminum oxide sand band of 320#；
Step 7: final process: the two-phase stainless steel wire rod after sanding being carried out drawing on wire drawing machine, draws Ф by Ф 4.3mm
3.6mm draws Ф 3.2mm, two phase stainless steel gas metal-arc welding silk finished product is prepared in price fixing packaging.
The two phase stainless steel gas metal-arc welding silk finished surface that embodiment 1 is prepared is bright, does not draw trace, splits
Line, the defects of warping, metallograph is shown in Fig. 1.It can be seen from figure 1 that its microstructure fine uniform, in microstructure, ferrite
Area fraction be about 60%, the content of austenite is about 40%.
After tested, the tensile strength for the two phase stainless steel gas metal-arc welding silk finished product that embodiment 1 is prepared is
1139MPa, elongation percentage 8%, HRC hardness are 26.
S31803 stainless steel is welded with the two phase stainless steel gas metal-arc welding silk finished product that embodiment 1 is prepared,
Through simulated seawater environmental testing three months, commissure did not occurred obvious spot corrosion and stress corrosion cracking phenomenon.
A kind of preparation method of two phase stainless steel gas metal-arc welding silk of embodiment 2, comprising the following steps:
Step 1: peeling: preparing the two-phase stainless steel wire rod of Ф 5.5mm, the weight percent composition of the two-phase stainless steel wire rod
Include: Cr22.9%, Ni8.5%, Mo3.0%, Mn1.8%, C≤0.03%, Si≤0.9%, P≤0.03%, S≤0.01%, Cu≤
0.4%, N≤0.2%, surplus are Fe and inevitable impurity；With the speed peeling of 8m/min to Ф on peeling machine
5.35mm；
Step 2: epithelium is handled: in the Metal Surface Phosphate Treating Area equipped with epithelium agent solution to the two phase stainless steel wire surface of Ф 5.35 into
The processing of row epithelium, is dried later；Wherein, the specific gravity of epithelium agent solution is 1.15g/cm3, the temperature of epithelium agent solution is 100 DEG C,
Epithelium handles the time as 25min；Drying temperature is 100 DEG C, drying time 45min；
Step 3: thick take out: the two-phase stainless steel wire rod that epithelium is handled and dried carries out drawing on wire drawing machine, by Ф 5.35mm
Ф 4.6mm is drawn to draw Ф 4.1mm；
Step 4: pickling: the two-phase stainless steel wire rod after thick take out being carried out cathodic pickling in descaling bath, is contained in descaling bath
The concentration of sulfuric acid solution is 260g/L, Faradaic current 380A, decomposition voltage 8V；
Step 5: annealing: the two-phase stainless steel wire rod after pickling is carried out to 1060 DEG C of online bright annealing, the two phase stainless steel
The Trace speed of wire rod in the lehr is 2.5m/min；Room temperature is chilled in 2~3min after line bright annealing；
Step 6: sanding: the two-phase stainless steel wire rod after annealing is carried out to circulating type polishing, polishing on belt grinder,
In, abrasive band used is the aluminum oxide sand band of 320#；
Step 7: final process: the two-phase stainless steel wire rod after sanding being carried out single track or multiple tracks drawing on wire drawing machine, by Ф
4.1mm draws Ф 3.5mm to draw Ф 3.2mm, two phase stainless steel gas metal-arc welding silk finished product is prepared in price fixing packaging.
The two phase stainless steel gas metal-arc welding silk finished surface that embodiment 2 is prepared is bright, does not draw trace, splits
Line, the defects of warping, metallograph is shown in Fig. 2.As it is clear from fig. 2 that its microstructure fine uniform, in microstructure, ferrite
Area fraction be about 70%, the content of austenite is about 30%.
After tested, the tensile strength for the two phase stainless steel gas metal-arc welding silk finished product that embodiment 2 is prepared is
1283MPa, elongation percentage 6%, HRC hardness are 29.
S32205 stainless steel is welded with the two phase stainless steel gas metal-arc welding silk finished product that embodiment 2 is prepared,
Through simulated seawater environmental testing six months, commissure did not occurred obvious spot corrosion and stress corrosion cracking phenomenon.
Claims (5)
1. a kind of preparation method of two phase stainless steel gas metal-arc welding silk, which comprises the following steps:
Step 1: peeling: preparing the two-phase stainless steel wire rod of Ф 5.5mm, the weight percent composition of the two-phase stainless steel wire rod
Include: Cr21.0~23.5%, Ni7.5~9.5%, Mo2.5~3.5%, Mn0.5~2.0%, C≤0.03%, Si≤0.9%, P≤
0.03%, S≤0.01%, Cu≤0.4%, N≤0.2%, surplus are Fe and inevitable impurity；With 7~8m/ on peeling machine
The speed peeling of min is to Ф 5.35mm；
Step 2: epithelium is handled: in the Metal Surface Phosphate Treating Area equipped with epithelium agent solution to the two phase stainless steel wire surface of Ф 5.35 into
The processing of row epithelium, is dried later；
Step 3: thick take out: the two-phase stainless steel wire rod that epithelium is handled and dried carries out single track or multiple tracks drawing on wire drawing machine,
Total draft is 28~45%；
Step 4: pickling: the two-phase stainless steel wire rod after thick take out is carried out cathodic pickling in descaling bath；
Step 5: annealing: the two-phase stainless steel wire rod after pickling is carried out to 1000~1080 DEG C of online bright annealing, the two-phase
The Trace speed of STAINLESS STEEL WIRE in the lehr is 1.5~3m/min；Room is chilled in 1~3min after line bright annealing
Temperature；
Step 6: sanding: the two-phase stainless steel wire rod after annealing is carried out to circulating type polishing, polishing on belt grinder；
Step 7: final process: the two-phase stainless steel wire rod after sanding being carried out single track or multiple tracks drawing on wire drawing machine, is always subtracted
Face rate is 38~50%, is drawn to Ф 3.2mm, price fixing packaging, that is, be prepared two phase stainless steel gas metal-arc welding silk at
Product.
2. a kind of preparation method of two phase stainless steel gas metal-arc welding silk according to claim 1, feature exist
In in the microstructure for the two phase stainless steel gas metal-arc welding silk finished product being prepared, ferritic area fraction is
50~75%, the content of austenite is 25~50%.
3. a kind of preparation method of two phase stainless steel gas metal-arc welding silk according to claim 1, feature exist
In in step 2, film agent used is the product for the model PM-02 that Na Tai Chemical Co., Ltd. in Hebei provides, the skin
The specific gravity of film solution is 1.13~1.15g/cm3, the temperature of the epithelium agent solution is 70~110 DEG C, when epithelium is handled
Between be 5~30min；The drying temperature is 70~160 DEG C, and drying time is 30~50min.
4. a kind of preparation method of two phase stainless steel gas metal-arc welding silk according to claim 1, feature exist
In in step 4, the concentration of the sulfuric acid solution contained in descaling bath is 180~280g/L, and Faradaic current is 300~400A, electricity
Solution voltage is 1~10V.
5. a kind of preparation method of two phase stainless steel gas metal-arc welding silk according to claim 1, feature exist
In in step 6, abrasive band used is the aluminum oxide sand band of 320#.
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| CN201811609025.6A CN109706402B (en) | 2018-12-27 | 2018-12-27 | Preparation method of duplex stainless steel consumable electrode gas shielded welding wire |
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| CN201811609025.6A CN109706402B (en) | 2018-12-27 | 2018-12-27 | Preparation method of duplex stainless steel consumable electrode gas shielded welding wire |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110747398A (en) * | 2019-11-13 | 2020-02-04 | 江阴康瑞成型技术科技有限公司 | Stainless steel wire for spectacle frame and processing technology thereof |
| CN110883495A (en) * | 2019-11-21 | 2020-03-17 | 浙江翰德圣智能再制造技术有限公司 | Online repair process for rotary valve rotor sealing surface |
| CN113798728A (en) * | 2021-09-14 | 2021-12-17 | 哈尔滨威尔焊接有限责任公司 | Austenitic stainless steel welding wire and preparation method and application thereof |
| CN114107638A (en) * | 2021-10-25 | 2022-03-01 | 浙江腾龙精线有限公司 | Processing method of steel wire for armored cable |
| CN115976320A (en) * | 2022-12-28 | 2023-04-18 | 浙江青山钢铁有限公司 | Surface treatment method for high-carbon martensitic stainless steel wire rod |
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| CN115976320A (en) * | 2022-12-28 | 2023-04-18 | 浙江青山钢铁有限公司 | Surface treatment method for high-carbon martensitic stainless steel wire rod |
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Effective date of registration: 20220113 Address after: 315803 No. 1, building 3, No. 79, Chenshan East Road, Xiaogang street, Beilun District, Ningbo City, Zhejiang Province Patentee after: Zhejiang Tenglong stainless steel rod and wire Co.,Ltd. Address before: 315803 No. 7, No. 69 Chan Shan Road, Xiaogang, Beilun District, Ningbo, Zhejiang 1 Patentee before: ZHEJIANG TENGLONG STAINLESS STEEL WIRES CO.,LTD. |