CN1264634A - Welding electrode of stainless martensitic-austenitic steel for resisting gas holes, moisture and abrasion - Google Patents
Welding electrode of stainless martensitic-austenitic steel for resisting gas holes, moisture and abrasion Download PDFInfo
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- CN1264634A CN1264634A CN 00114375 CN00114375A CN1264634A CN 1264634 A CN1264634 A CN 1264634A CN 00114375 CN00114375 CN 00114375 CN 00114375 A CN00114375 A CN 00114375A CN 1264634 A CN1264634 A CN 1264634A
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Abstract
A welding electrode of stainless martensitic-astenitic steel features that its coated layer is the mixture of 21 components which may be alloy powders and minerals including rutile, titanium oxide, potassium titanate, argil, marble, fluorspar, etc. Its advantages are high weldability, resisting gas hols, moisture and abrasion, and high anticorrosion and anticracking nature.
Description
The invention belongs to a kind of stainless martensitic-austenitic steel for resisting gas holes, moisture and abrasion welding rod.
In the prior art, although some welding material manufactories have solved stainless steel when it is burned to 2/3rds left and right sides substantially according to metallurgical theory both at home and abroad, the problem of the very easily rubescent and cracking of afterbody coating, but up to now the not high shortcoming of poor, the wear-resistant grain of stainless steel electrode stomata sensitivity problem, humidity resistance polishing machine is also fundamentally solved.
Stainless steel electrode stomata sensitivity problem be since the stainless steel electrode coating in contain more adhesive water, the crystallization water and cellulose, they in the Welding Metallurgy process with atomic hydrogen [H] or ionic hydrogen [H
+] form be dissolved in welding pool.Along with the reduction of bath temperature, atomic hydrogen gas, ionic hydrogen form hydrogen, and welding pool just forms hydrogen blistering if hydrogen has little time to overflow.Solving the stainless steel electrode stomata sensitivity in the prior art has following three kinds of method: a. to improve the content of fluoride and carbonate in the coating; B. improve the oxidisability of arc atmosphere; C. improve welding rod and mineral powder bake out temperature.
But above-mentioned three kinds of methods still can not thoroughly solve stainless steel electrode gas sensitization problem.Simultaneously, of home make stainless steel electrode through storing after a while, because of the coating moisture absorption is separated out some alkaline matters on the surface, so-called " white mould " phenomenon occurs, influences the welding technological properties of welding rod and causes weld crack.In addition, the domestic martensitic stain less steel Welding Structure of carrying out often adopts austenite stainless steel-made welding rod to replace as difficult to understand 102, difficult to understand 132 or difficult to understand 022 when producing, and forms the xenogenesis welding point, makes that the wear-corrosion resistance of deposited metal is poor.
The objective of the invention is at problems of the prior art, invent a kind of anti-pore damp-proof wear-resistant erosion welding electrode of stainless martensitic-austenitic steel, intend fundamentally solving that present stainless steel electrode exists is big to hydrogen blistering sensitiveness, moisture proof ability and the not high shortcoming of deposited metal abrasive wear resistance performance.
The embodiment of the said anti-pore damp-proof wear-resistant erosion welding electrode of stainless martensitic-austenitic steel of the present invention is:
A. the steel core of welding rod adopts martensite stainless steel material, as welding wires such as Mo ultralow-carbon martensitic stainless steel 00Cr17Ni6Mo or martensitic stain less steel 1Cr17Ni6Mo.
B. the ratio of potassium-sodium water glass is 1: 1～4: 1, and its proportion is: 0.9～2.5;
C. the mould of welding rod directly is: 3.5～6.5;
D. the granularity of all powders is 65～320 orders.
E. alloyed powder and mineral powder, potassium-sodium water glass stirred repeatedly, after the homogenising, carry out welding rod production, the concrete prescription such as the following table of each mineral powder of coating, each alloy in the welding rod:
Table 1: stainless martensitic-austenitic steel for resisting gas holes, moisture and abrasion welding rod prescription
| Composition | Ratio | Composition | Ratio | Composition | Ratio |
| Rutile | ??5～50％ | Sepiolite | 1～30％ | Bentonite | ??0～10％ |
| Titanium dioxide | ??1～15％ | Mica | 1～8％ | Iron oxide red | ??0～5％ |
| Potassium titanate | ??0～8％ | Hydrophober | 0～5％ | Ice crystal | ??0～15％ |
| White clay | ??1～16％ | Crome metal | 1～15％ | Feldspar | ??0～12％ |
| Marble | ??1～30％ | Manganese metal | 1～18％ | Ferro-boron | ??0～5％ |
| Fluorite | ??0～10％ | Metallic nickel | 1～17％ | Sodium alginate | ??0～10％ |
| The fluoride rare earth | ??0～8％ | Molybdenum-iron | 0～7％ | Potassium alginate | ??0～10％ |
It is strong that the said stainless martensitic-austenitic steel for resisting gas holes, moisture and abrasion welding rod of the present invention has welding technological properties excellence, anti-pore, anti-moisture absorption capacity, and weld metal has good abrasive wear resistance, decay resistance and cracking resistance line ability.It can be used for the surface overlaying of hot roll, engineering machinery, also can be used as chemical plant installations, as the welding material of urea synthesizer, petroleum gas stainless steel storage tank and turbine blade.
The said anti-pore damp-proof wear-resistant erosion welding electrode of stainless martensitic-austenitic steel of the present invention, can satisfy and reach following specification requirement:
1. welding technological properties excellence.Spatter is little, and the weld metal removability of slag and weld metal moulding are good, welding arc stablility, are suitable for all-position welding.
2. in the welding process, weld metal no hydrogen hole and receive the arc pore.
3. the wet ability of welding rod moisture resistance is strong.(air humidity is 100% o'clock) long term storage under the environment of humidity, " white mould " phenomenon does not appear in the welding rod surface, and pore does not appear in weld metal.
4. weld metal has good cracking resistance line performance, and its microscopic structure is made up of a large amount of martensites and a small amount of austenite, and good abrasive wear resistance and decay resistance are arranged.
Following according to the formation described in the technical solution of the present invention, further specify the said anti-pore damp-proof wear-resistant erosion performance situation that welding electrode of stainless martensitic-austenitic steel possessed of the present invention.
1. anti-pore performance
In the weld metal air holes mainly be since the time of liberation of gas less than the setting time of metal, if increase the metallurgical reaction of inside, molten bath, make the fierce boiling of metal in the molten bath, promote gas before metal freezing, from the molten bath, to overflow fast, avoid producing in the weld metal pore.According to this principle, in the welding electrode of stainless martensitic-austenitic steel coating of invention, add and contain the higher mineral of the crystallization water, in the Welding Metallurgy process, the molten bath produces the high degree of agitation boiling phenomenon, hydrogen is overflowed fast, thereby avoid producing in the weld metal pore, improve the anti-pore performance of weld metal.
2. moisture proof performance
Generally contain hydrophilic mineral in the electrode coating,, make welding rod that stronger moisture absorption ability be arranged, cause the alkaline matter in the coating waterglass to separate out, giving birth to " white mould " phenomenon as soda ash, mica.Add an amount of water-repellent agent at the mineral powder, reduce the hydrophily of coating, or change the modulus of waterglass, can improve the humidity resistance of coating greatly, prevent what is called " white mould " phenomenon.
3. wear-corrosion resistance
Strip martensite has good abrasive wear resistance performance, if in the strip martensitic matrix a small amount of reversed austenite is arranged, in use, because the effect of outside energy makes reversed austenite be transformed into martensite, weld metal just has good abrasive wear resistance performance and decay resistance.If continue to improve its abrasive wear resistance performance and decay resistance, can improve the boron (B) of weld metal, the content of carbon (C) in right amount, form carbon-boron compound, thereby improve the wear-corrosion resistance of deposited metal.
4. the mechanical property of weld metal
The tensile strength of weld metal is not less than 680MPa, percentage elongation δ
5Be not less than 16%, contraction percentage of area Ψ is not less than 45%, and hardness HB is 250～350.
Claims (5)
1, a kind of stainless martensitic-austenitic steel for resisting gas holes, moisture and abrasion welding rod is characterized in that, coating is mixed by alloyed powder and mineral powder, and the formula rate of each mineral powder, alloyed powder is: rutile 5～50%; Titanium dioxide 1～15%; Potassium titanate 0～8%; White clay 1～16%; Marble 1～30%; Fluorite 0～10%; Fluoride rare earth 0～8%; Sepiolite 1～30%; Mica 1～8%; Hydrophober 0～5%; Crome metal 1～15%; Manganese metal 1～18%; Metallic nickel 1～17%; Molybdenum-iron 0～7%; Bentonite 0～10%; Iron oxide red 0～5%; Ice crystal 0～15%; Feldspar 0～12%; Ferro-boron: 0～5%; Sodium alginate 0～10%; Potassium alginate 0～10%.
According to the said stainless steel electrode of claim 1, it is characterized in that 2, the steel core of said stainless steel electrode is welding wires such as Mo ultralow-carbon martensitic stainless steel 00Cr17Ni6Mo or martensitic stain less steel 1Cr17Ni6Mo.
According to the said stainless steel electrode of claim 1, it is characterized in that 3, the ratio of the potassium-sodium water glass of said stainless steel electrode is 1: 1～4: 1, its proportion is: 0.9～2.5.
According to the said stainless steel electrode of claim 1, it is characterized in that 4, said stainless steel electrode mould directly is 3.5～6.5.
According to the said flux-cored wire of claim 1, it is characterized in that 5, the granularity of alloyed powder in the said stainless steel electrode coating and mineral powder powder is 65～320 orders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00114375 CN1264634A (en) | 2000-02-15 | 2000-02-15 | Welding electrode of stainless martensitic-austenitic steel for resisting gas holes, moisture and abrasion |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00114375 CN1264634A (en) | 2000-02-15 | 2000-02-15 | Welding electrode of stainless martensitic-austenitic steel for resisting gas holes, moisture and abrasion |
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| CN 00114375 Pending CN1264634A (en) | 2000-02-15 | 2000-02-15 | Welding electrode of stainless martensitic-austenitic steel for resisting gas holes, moisture and abrasion |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1298494C (en) * | 2003-01-13 | 2007-02-07 | 房爱存 | Special stainless steel welding rod |
| CN100347341C (en) * | 2005-12-16 | 2007-11-07 | 北京工业大学 | High hardness high wear resistance electric arc spray coating powder core wire material |
| CN102009286A (en) * | 2010-10-27 | 2011-04-13 | 武汉铁锚焊接材料股份有限公司 | Mixed powder and method for improving press coating and appearance quality of alkaline welding rod and alkaline welding rod |
| CN102922169A (en) * | 2012-10-30 | 2013-02-13 | 四川大西洋焊接材料股份有限公司 | Nickel-based welding rod for welding nickel, chrome and iron alloy steel |
| CN103084759A (en) * | 2013-02-27 | 2013-05-08 | 哈尔滨工业大学（威海） | Stainless welding rod used for underwater wet welding |
| CN106216887A (en) * | 2016-08-18 | 2016-12-14 | 江苏锦阳不锈钢制品有限公司 | A kind of stainless steel electrode coating |
| CN106271229A (en) * | 2016-08-18 | 2017-01-04 | 江苏锦阳不锈钢制品有限公司 | A kind of preparation method of high strength electrode |
| CN107127481A (en) * | 2017-03-28 | 2017-09-05 | 安泰科技股份有限公司 | A kind of high tenacity stainless steel electrode coating, welding rod and preparation method thereof |
| WO2017181633A1 (en) * | 2016-04-19 | 2017-10-26 | 南通豪泰焊材有限公司 | Titanic-acid-type stainless steel welding electrode and manufacturing method thereof |
| CN111112882A (en) * | 2020-01-17 | 2020-05-08 | 郑州大学 | Stainless steel welding rod capable of resisting reddening and cracking of coating |
| CN114434045A (en) * | 2022-01-25 | 2022-05-06 | 四川大西洋焊接材料股份有限公司 | Corrosion-resistant urea-grade stainless steel welding rod and preparation method thereof |
-
2000
- 2000-02-15 CN CN 00114375 patent/CN1264634A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1298494C (en) * | 2003-01-13 | 2007-02-07 | 房爱存 | Special stainless steel welding rod |
| CN100347341C (en) * | 2005-12-16 | 2007-11-07 | 北京工业大学 | High hardness high wear resistance electric arc spray coating powder core wire material |
| CN102009286A (en) * | 2010-10-27 | 2011-04-13 | 武汉铁锚焊接材料股份有限公司 | Mixed powder and method for improving press coating and appearance quality of alkaline welding rod and alkaline welding rod |
| CN102009286B (en) * | 2010-10-27 | 2012-12-05 | 武汉铁锚焊接材料股份有限公司 | Mixed powder and method for improving press coating and appearance quality of alkaline welding rod and alkaline welding rod |
| CN102922169A (en) * | 2012-10-30 | 2013-02-13 | 四川大西洋焊接材料股份有限公司 | Nickel-based welding rod for welding nickel, chrome and iron alloy steel |
| CN102922169B (en) * | 2012-10-30 | 2015-05-20 | 四川大西洋焊接材料股份有限公司 | Nickel-based welding rod for welding nickel, chrome and iron alloy steel |
| CN103084759A (en) * | 2013-02-27 | 2013-05-08 | 哈尔滨工业大学（威海） | Stainless welding rod used for underwater wet welding |
| CN103084759B (en) * | 2013-02-27 | 2015-09-16 | 哈尔滨工业大学（威海） | A kind of underwater wet welding stainless steel electrode |
| WO2017181633A1 (en) * | 2016-04-19 | 2017-10-26 | 南通豪泰焊材有限公司 | Titanic-acid-type stainless steel welding electrode and manufacturing method thereof |
| CN106216887A (en) * | 2016-08-18 | 2016-12-14 | 江苏锦阳不锈钢制品有限公司 | A kind of stainless steel electrode coating |
| CN106271229A (en) * | 2016-08-18 | 2017-01-04 | 江苏锦阳不锈钢制品有限公司 | A kind of preparation method of high strength electrode |
| CN107127481A (en) * | 2017-03-28 | 2017-09-05 | 安泰科技股份有限公司 | A kind of high tenacity stainless steel electrode coating, welding rod and preparation method thereof |
| CN107127481B (en) * | 2017-03-28 | 2020-02-18 | 安泰科技股份有限公司 | High-toughness stainless steel welding rod coating, welding rod and preparation method thereof |
| CN111112882A (en) * | 2020-01-17 | 2020-05-08 | 郑州大学 | Stainless steel welding rod capable of resisting reddening and cracking of coating |
| CN114434045A (en) * | 2022-01-25 | 2022-05-06 | 四川大西洋焊接材料股份有限公司 | Corrosion-resistant urea-grade stainless steel welding rod and preparation method thereof |
| CN114434045B (en) * | 2022-01-25 | 2023-04-21 | 四川大西洋焊接材料股份有限公司 | Corrosion-resistant urea-grade stainless steel welding rod and preparation method thereof |
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