CN102019518B - Two phase stainless steel welding rod - Google Patents
Two phase stainless steel welding rod Download PDFInfo
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- CN102019518B CN102019518B CN 201010620779 CN201010620779A CN102019518B CN 102019518 B CN102019518 B CN 102019518B CN 201010620779 CN201010620779 CN 201010620779 CN 201010620779 A CN201010620779 A CN 201010620779A CN 102019518 B CN102019518 B CN 102019518B
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Abstract
The invention discloses a two phase stainless steel welding rod which comprises a solder wire and a coating, wherein the coating comprises the following components in percentage by weight: 35-45 percent of calcium oxide, 16-25 percent of calcium fluoride, 5-10 percent of titanium white, 5-10 percent of silica, 4-8 percent of silicon iron, 3-5 percent of medium carbon ferromanganese, 2-4 percent of ferro-molybdenum, 3-5 percent of chromium nitride iron, 3-5 percent of potassium oxide, 4-6 percent of sodium oxide and 1-3 percent of nickel. The metal clad with the corrosion-resisting high-strength two phase stainless steel welding rod has excellent mechanical property, welding performance and pitting and stress corrosion resistance.
Description
Technical field
The present invention relates to a kind of stainless steel welding electrode that is used for arc welding, especially a kind of double-phase stainless steel electric welding bar.
Background technology
Along with variation, the maturing day by day of human industrial technology, the performance requirement to steel in the industrialization development process of countries in the world also increases gradually.Therefore; Demand with superior corrosion resistance, toughness and high-intensity performance two phase stainless steel also day by day increases; 2506 two phase stainless steels are exactly wherein a kind of; It is widely used in the steel construction pieces such as pipeline cable in ripple wall cargo hold, large bridge structure and oil field, deep-sea of heat exchanger, the chemical tanker of refining equipment and petrochemical industry; Its chemical composition (quality percentage composition) is: C: Mn≤0.030%: Si≤2.0%: S≤1.0%: P≤0.020% :≤0.030%, Cr:24.0-26.0%, Ni:5.5-7.5%, Mo:2.5-3.5%, N:0.10-0.20%, all the other are Fe.
As the welding rod that matches with corrosion-proof and high-strength degree two phase stainless steel; Not only welding procedure, process and welder technology will satisfy corresponding standard and requirement, and welding material also must satisfy the requirement of postwelding deposited metal composition, mechanical property requirements and anti-spot corrosion, stress corrosion performance and seawater corrosion requirement etc.
Literature search through to existing two phase stainless steel finds that CN101323058A and CN101367161A patent are the welding rods that is used for two phase stainless steel, though its range of application is also wider; But contain a large amount of precious metal powders in the required mineral powder of its preparation coating,, even also have a certain amount of rare earth composition like nickel powder, crome metal and manganese metal etc.; It is cost an arm and a leg; And add too much metal dust and can make welding rod welding technological properties variation, simultaneously, can cause pollution to the field Welding working environment.Find still do not have a kind of not only economy but also environmental protection at present and have excellent mechanical property and the welding rod of anti-spot corrosion, stress corrosion performance through above-mentioned retrieval.
Summary of the invention
The objective of the invention is to solve the problem that exists in the prior art; A kind of anti-corrosion and high strength double-phase stainless steel electric welding bar is provided; Alkalescence and acid compound with suitable are the basis, and composition is simple, reasonable, and welding technological properties has also obtained improving further with the on-the-spot environment of welding; The scope of application is wider, and price is also more cheap.
Technical scheme of the present invention is: a kind of double-phase stainless steel electric welding bar; It comprises welding wire and coating, and said coating is made up of following components in weight percentage content: calcium oxide 35～45%, calcirm-fluoride 16～25%, titanium white powder 5～10%, silica 5～10%, ferrosilicon 4～8%, mid-carbon fe-mn 3～5%, molybdenum-iron 2～4%, nitrided ferro-chromium 3～5%, potassium oxide 3～5%, sodium oxide molybdena 4～6% and nickel 1～3%.
The preparation method of said welding rod is: the coating component that takes by weighing following weight percentage: calcium oxide 35～45%, calcirm-fluoride 16～25%, titanium white powder 5～10%, silica 5～10%, ferrosilicon 4～8%, mid-carbon fe-mn 3～5%, molybdenum-iron 2～4%, (CrFe) N:3～5%, potassium oxide 3～5%, sodium oxide molybdena 4～6% and nickel 1～3%; Mixing the back adds 16～18% the waterglass account for the coating gross weight and makes binding agent; Mixture is coated in outside the welding wire; Suppress through the hydraulic type electrode extrusion press then; Dried 1 hour for 150 ℃ at low temperature, and then high temperature 350-400 ℃ dried 0.5 hour.
Preferably, to account for the mass percent of welding rod be 28～32% to said coating.
Preferably, said welding wire adopts 2506 two phase stainless steel welding wires.
The content of element is following in the said nitrided ferro-chromium: Cr>=60%, N>=5.0%, C≤0.1%, S≤1.5%.
Silicon content in the said ferrosilicon is 75%.
The invention has the beneficial effects as follows: (1) because each reasonable mixture ratio of components in the coating, make welding bead smooth, have good removing slag property, fusion good, open defects such as no slag inclusion, pore, macroscopic cracking have more good welding technological properties.(2) through metallographic observation, austenitic content is 40～60% in the seam organization, satisfies the application requirements of two phase stainless steel on engineering fully.(3) the noble metal composition among the present invention is trace, and is cheap for manufacturing cost, helps enterprise to reduce production costs, improve product quality and production efficiency.(4) deposited metal of welding rod has excellent mechanical property and anti-spot corrosion, stress corrosion performance, and its tensile strength can reach more than the 850MPa, and has good low-temperature flexibility.
The specific embodiment
Elaborate in the face of embodiments of the invention down, for embodiment being to implement under the prerequisite with technical scheme of the present invention, provided detailed embodiment and operating process particularly, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
Chemical coating of welding electrode in the present embodiment is made up of following components in weight percentage content: calcium oxide 35%, calcirm-fluoride 20%, titanium white powder 8%, silica 9%, ferrosilicon 8%, mid-carbon fe-mn 3%, molybdenum-iron 4%, nitrided ferro-chromium 4%, potassium oxide 4%, sodium oxide molybdena 4% and nickel 1%; Above-mentioned each component is mixed the back to add 16% the waterglass account for the coating gross weight and makes binding agent; Mixture is coated in outside the welding wire; Suppress through the hydraulic type electrode extrusion press then; 150 ℃ of oven dry of low temperature 1 hour, and then 350 ℃ of oven dry of high temperature got final product in 0.5 hour.
Embodiment 2
Chemical coating of welding electrode in the present embodiment is made up of following components in weight percentage content: calcium oxide 40%, calcirm-fluoride 18%, titanium white powder 6%, silica 8%, ferrosilicon 6%, mid-carbon fe-mn 4%, molybdenum-iron 4%, nitrided ferro-chromium 4%, potassium oxide 4%, sodium oxide molybdena 5% and nickel 1%; Above-mentioned each component is mixed the back to add 18% the waterglass account for the coating gross weight and makes binding agent; Mixture is coated in outside the welding wire; Suppress through the hydraulic type electrode extrusion press then; 150 ℃ of oven dry of low temperature 1 hour, and then 360 ℃ of oven dry of high temperature got final product in 0.5 hour.
Embodiment 3
Chemical coating of welding electrode in the present embodiment is made up of following components in weight percentage content: calcium oxide 45%, calcirm-fluoride 15%, titanium white powder 5%, silica 7%, ferrosilicon 7%, ferromanganese 4%, molybdenum-iron 3%, nitrided ferro-chromium 3%, potassium oxide 5%, sodium oxide molybdena 4% and nickel 2%; Above-mentioned each component is mixed the back to add 17% the waterglass account for the coating gross weight and makes binding agent; Mixture is coated in outside the welding wire; Suppress through the hydraulic type electrode extrusion press then; 150 ℃ of oven dry of low temperature 1 hour, and then 380 ℃ of oven dry of high temperature got final product in 0.5 hour.
The percetage by weight of the deposited metal component of said welding rod is: carbon≤0.06%, manganese≤2.0%, silicon≤1.0%, sulphur≤0.030%, phosphorus≤0.030%, chromium 24.0～27.0%, nickel 5.5～8.5%, molybdenum 2.0～3.5%, nitrogen 0.10～0.30%, all the other are iron.It is the 2506 two phase stainless steel welding wires of Φ 4mm that embodiment 1-3 all adopts diameter; Weld S2506 two-phase stainless steel plate respectively with the welding rod for preparing among the embodiment 1-3 (welding rod sequence number difference 1,2,3); The chemical composition of the deposited metal of welding rod and weight percentage thereof (%) see also table two; The specification of S2506 two-phase stainless steel plate is 45 * 200 * 700 (mm), and the chemical composition of S2506 two-phase stainless steel plate and weight percentage (%) thereof see also table one;
| Composition | C | Si | Mn | S | P | Ni | Cr | Mo | N | Fe |
| Content % | 0.027 | 0.81 | 1.65 | 0.019 | 0.027 | 6.11 | 25.4 | 3.1 | 0.17 | Surplus |
Table one
Groove size, sample position and test method etc. are all implemented by the regulation of standard GB/T5118.
Table two
The mechanical property of the deposited metal of the welding rod that embodiment 1-3 makes sees also table three.
| Sequence number | Yield strength (N/mm 2) | Hot strength (N/mm 2) | Percentage elongation (%) | Ballistic work (J) |
| 1 | 655 | 876 | 35 | 55 |
| 2 | 679 | 911 | 27 | 43 |
| 3 | 667 | 892 | 30 | 47 |
Table three
The deposited metal (sequence number is respectively a, b, c) of the welding rod that embodiment of the invention 1-3 is made carries out 24 hours pitting test in 50 ℃ iron chloride and 20ml/L acetic acid solution, in 100 ℃ 40% calcium chloride solution, carry out stress corrosion (cracking) test in 72 hours.Test result sees also table four.
Table four
Result of the test is that the deposited metal spot corrosion influence of anti-corrosion and high strength double-phase stainless steel electric welding bar is very little, stress corrosion phenomena also do not occur, has shown anti-spot corrosion and stress corrosion performance that it is good.
Claims (7)
1. double-phase stainless steel electric welding bar; It comprises welding wire and coating, it is characterized in that: said coating is made up of following components in weight percentage content: calcium oxide 35～45%, calcirm-fluoride 16～25%, titanium white powder 5～10%, silica 5～10%, ferrosilicon 4～8%, mid-carbon fe-mn 3～5%, molybdenum-iron 2～4%, nitrided ferro-chromium 3～5%, potassium oxide 3～5%, sodium oxide molybdena 4～6% and nickel 1～3%.
2. welding rod according to claim 1; It is characterized in that: the preparation method of said welding rod is: the coating component that takes by weighing following weight percentage: calcium oxide 35～45%, calcirm-fluoride 16～25%, titanium white powder 5～10%, silica 5～10%, ferrosilicon 4～8%, mid-carbon fe-mn 3～5%, molybdenum-iron 2～4%, (CrFe) N:3～5%, potassium oxide 3～5%, sodium oxide molybdena 4～6% and nickel 1～3%; Mixing the back adds 16～18% the waterglass account for the coating gross weight and makes binding agent; Mixture is coated in outside the welding wire; Suppress through the hydraulic type electrode extrusion press then; Dried 1 hour for 150 ℃ at low temperature, and then high temperature 350-400 ℃ dried 0.5 hour.
3. welding rod according to claim 2 is characterized in that: the mass percent that said coating accounts for welding rod is 28～32%.
4. welding rod according to claim 2 is characterized in that: said welding wire adopts 2506 two phase stainless steel welding wires.
5. welding rod according to claim 1 is characterized in that: the content of element is following in the said nitrided ferro-chromium: Cr>=60%, N>=5.0%, C≤0.1%, S≤1.5%.
6. welding rod according to claim 1 is characterized in that: the silicon content in the said ferrosilicon is 75%.
7. welding rod according to claim 1; It is characterized in that: the percetage by weight of the deposited metal component of said welding rod is: carbon≤0.06%, manganese≤2.0%, silicon≤1.0%, sulphur≤0.030%, phosphorus≤0.030%, chromium 24.0～27.0%, nickel 5.5～8.5%, molybdenum 2.0～3.5%, nitrogen 0.10～0.30%, all the other are iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010620779 CN102019518B (en) | 2010-12-31 | 2010-12-31 | Two phase stainless steel welding rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010620779 CN102019518B (en) | 2010-12-31 | 2010-12-31 | Two phase stainless steel welding rod |
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| Publication Number | Publication Date |
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| CN102019518A CN102019518A (en) | 2011-04-20 |
| CN102019518B true CN102019518B (en) | 2012-12-19 |
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| CN 201010620779 Expired - Fee Related CN102019518B (en) | 2010-12-31 | 2010-12-31 | Two phase stainless steel welding rod |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102240871A (en) * | 2011-05-05 | 2011-11-16 | 河海大学常州校区 | Sintered flux for stainless steel submerged arc deposited metal nitrogen alloying |
| CN103084758B (en) * | 2013-01-23 | 2015-06-03 | 西安理工大学 | Titanium-calcium welding rod |
| CN106825985A (en) * | 2015-12-07 | 2017-06-13 | 海宁瑞奥金属科技有限公司 | Phase stainless steel use welding rod |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2125540A1 (en) * | 1993-12-20 | 1995-06-21 | Yukio Yamaoka | Stainless Steel Wire Product |
| JP3589917B2 (en) * | 1999-11-05 | 2004-11-17 | 日鐵住金溶接工業株式会社 | Flux-cored wire for duplex stainless steel welding |
| KR100774155B1 (en) * | 2006-10-20 | 2007-11-07 | 고려용접봉 주식회사 | Flux cored wire for duplex stainless steel and the manufacturing method thereof |
| CN101157160A (en) * | 2007-04-20 | 2008-04-09 | 北京工业大学 | A flux-cored wire for soldering diphasic stainless steel |
| JP2008221292A (en) * | 2007-03-14 | 2008-09-25 | Nippon Steel & Sumikin Welding Co Ltd | Flux cored wire for welding duplex stainless steel |
| CN101342650A (en) * | 2008-08-21 | 2009-01-14 | 中国船舶重工集团公司第七二五研究所 | Normalization anneal treatment resistant heat-resistant steel wire solder and use method thereof |
| CN101367161A (en) * | 2007-08-18 | 2009-02-18 | 中国船舶重工集团公司第七二五研究所 | Low-hydrogen super diphasic stainless steel electrode |
| CN101428376A (en) * | 2008-12-10 | 2009-05-13 | 天津三英焊业股份有限公司 | High-chromium-manganese austenitic steel alkalescent full-position gas-protection flux-cored wire |
| JP2010188387A (en) * | 2009-02-19 | 2010-09-02 | Nippon Steel & Sumikin Welding Co Ltd | Flux cored wire for welding duplex stainless steel |
| JP4672177B2 (en) * | 2001-05-15 | 2011-04-20 | 新日鐵住金ステンレス株式会社 | Submerged arc welding method for duplex stainless steel |
-
2010
- 2010-12-31 CN CN 201010620779 patent/CN102019518B/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2125540A1 (en) * | 1993-12-20 | 1995-06-21 | Yukio Yamaoka | Stainless Steel Wire Product |
| JP3589917B2 (en) * | 1999-11-05 | 2004-11-17 | 日鐵住金溶接工業株式会社 | Flux-cored wire for duplex stainless steel welding |
| JP4672177B2 (en) * | 2001-05-15 | 2011-04-20 | 新日鐵住金ステンレス株式会社 | Submerged arc welding method for duplex stainless steel |
| KR100774155B1 (en) * | 2006-10-20 | 2007-11-07 | 고려용접봉 주식회사 | Flux cored wire for duplex stainless steel and the manufacturing method thereof |
| JP2008221292A (en) * | 2007-03-14 | 2008-09-25 | Nippon Steel & Sumikin Welding Co Ltd | Flux cored wire for welding duplex stainless steel |
| CN101157160A (en) * | 2007-04-20 | 2008-04-09 | 北京工业大学 | A flux-cored wire for soldering diphasic stainless steel |
| CN101367161A (en) * | 2007-08-18 | 2009-02-18 | 中国船舶重工集团公司第七二五研究所 | Low-hydrogen super diphasic stainless steel electrode |
| CN101342650A (en) * | 2008-08-21 | 2009-01-14 | 中国船舶重工集团公司第七二五研究所 | Normalization anneal treatment resistant heat-resistant steel wire solder and use method thereof |
| CN101428376A (en) * | 2008-12-10 | 2009-05-13 | 天津三英焊业股份有限公司 | High-chromium-manganese austenitic steel alkalescent full-position gas-protection flux-cored wire |
| JP2010188387A (en) * | 2009-02-19 | 2010-09-02 | Nippon Steel & Sumikin Welding Co Ltd | Flux cored wire for welding duplex stainless steel |
Non-Patent Citations (1)
| Title |
|---|
| 宋毓瑛等.THAT2209双相不锈钢焊条的研制.《焊接技术》.2008, * |
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