CN1125652A - Special welding electrode for manganese steel build-up welding - Google Patents
Special welding electrode for manganese steel build-up welding Download PDFInfo
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- CN1125652A CN1125652A CN 94112743 CN94112743A CN1125652A CN 1125652 A CN1125652 A CN 1125652A CN 94112743 CN94112743 CN 94112743 CN 94112743 A CN94112743 A CN 94112743A CN 1125652 A CN1125652 A CN 1125652A
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Abstract
The special electrically welding electrode for build-up welding to repair manganese steel part features that its fusion metal contains C (0.08-0.25 Wt.%), Si (0.30-1.50), Mn (3.0-15.0), Cr (5.0-=15.0), Ni (0.5-2.0), B (0.005-0.1), P (less than 0.03), S (less than 0.03) and Fe (rest, and its chemicalc oating contains Re (0.1-0.5 wt.%), Si-Ca alloy (0.5-1.0), Nd (0.1-0.5) and B-Si alloy (0.5-1.0) for removing S and P and resisting crack.
Description
The invention belongs to welding material, be meant built-up welding manganese steel welding material especially.
Contain manganese steel extensive use in industries such as machinery, metallurgy, mine of 1.4～13%.As broken wall, axle, the blade of a sword plate of the ore crusher in mine, the creeper tread of mining vehicle, the pulverizer of sintering plant, row's coal wheel in power plant, the reel of wire rolling plants etc. is potassium steel.According to incompletely statistics, these vulnerable parts only Anshan iron and steel plant are annual with regard to expensive nearly hundred million yuan, and it obviously is very huge that annual the costing of the factories and miness of potassium steel used in the whole nation.The potassium steel parts of scrapping if can be repaired, new with old top, great economic implications is then arranged.
At present, welding method is not all adopted in the reparation that is used for wear parts potassium steel both at home and abroad.Because welding potassium steel needs to contain in the components of welding electrode a large amount of nickel metals, and the price comparison costliness of nickel metal is more uneconomical from economic angle, so abrasion-proof manganese steel spare uses to a certain degree the back and just scraps automatically.Domestic some unit attempts with welding rods such as Mn, Cr, V REPAIR WELDING to be carried out with the broken wall of disintegrating machine in the mine, but the result is undesirable.The unit that has tries out spraying process, with the Ni-W-B-Si powder manganese steel parts is sprayed, and to increase its wearability and intensity, its result not only cost is very high, and effect is also undesirable.
Purpose of the present invention designs a kind of novel manganese steel surfacing welding exactly, and it can built-up welding on manganese steel new product and old product regeneration part, catch up with on its weldering meat intensity and the wearability and surpass the manganese steel body, and itself and body does not crack and other defective in conjunction with well.
Manganese steel built-up welding of the present invention with the chemical composition of the deposited metal of welding rod for (percentage by weight) is: C=0.08～0.25; Si=0.30～1.50; Mn=3.0～15.0; Cr=5.0～15.0; Ni=0.5～2.0; B=0.005～0.1; P≤0.03; S≤0.03, all the other are Fe.Welding rod deposited metal of the present invention adds high Mn and forms austenite to prevent cold and hot crackle in order to weld meat, forms the martensite wear-resistant layer after flow harden.Adding high Cr is in order to form the carbide particle of high-wear resistance, to strengthen wearability.Adding an amount of Ni is in order to improve the crack resistance of weld seam.Adding an amount of B is for crystal grain thinning, increases the obdurability of weldering meat.Welding rod of the present invention for S, the P content that makes weldering meat drops to below 0.03%, adds in covering of an electrode and takes off S, P elements Si-Ca alloy and Re element by force.Its addition (percentage by weight) Si-Ca=0.5～1.0; Re=0.1～0.5.Simultaneously in order to reduce overheated and to add fierce meat and the body bond strength has added reduction fusing point element Nd and B-Si powder in coating, its addition (percentage by weight) is: Nd=0.1～0.5; B-Si powder=0.5～1.0.
Adopt welding rod built-up welding potassium steel parts of the present invention, when welding, adopt cold welding.During in room temperature 〉=10 ℃, not preheating before the weldering, postwelding does not need heat treatment; Down during welding, weldment can be preheating to 50～80 ℃ in room temperature＜10 ℃, be incubated 1～1.5 hour, the weldment heat penetration can weld; Postwelding can take out cleaning after weldment is buried last 24 hour with sand or lime.
The metallographic structure of the overlay cladding of welding rod postwelding of the present invention is: austenite+martensite+diffusion carbide, the hardness HRc of overlay cladding 〉=20.
It is simple that the novel manganese steel surfacing welding that adopts the present invention to design has welding procedure, weldering meat intensity height, anti-wear performance is higher than the body wearability, and weldering meat and body are in conjunction with firm, do not produce cold and hot crackle, do not come off during use, repair the back part life-span even surpass original paper service life, therefore reduce production cost, improved economic benefit of enterprises.
Be embodiments of the invention below:
1. utilize welding rod of the present invention that Anshan iron and steel plant one power plant has been carried out the repairing built-up welding with useless discharge wheel.The discharge wheel material is 45Mn2, and its chemical composition is: C=0.42～0.49, and Si=0.34, Mn=1.8, remainder is Fe.The composition of the deposited metal of its welding rod (%) is: C=0.18, Si=0.55, Mn=13.2, Cr=14.5, Ni=1.5, B=0.02, P=0.030, S=0.030, remainder is Fe, the Si-Ca alloy content is 0.5 in the coating, Re=0.3, and Nd=0.5, B-Si powder are 1.0.Room temperature is 20 ℃ during welding, takes cold welding, and postwelding is not heat-treated, and buries after 24 hours with sand and takes out.Former a pair of new discharge wheel used about one month, had now used on half a year, improved service life more than 3 times.
2. with welding rod of the present invention the old reel of Anshan iron and steel plant steel cable factory is carried out built-up welding.The material of reel is 50Mn2, and its chemical composition is (%): C=0.52, Si=0.32, and Mn=1.8, remainder is Fe.The composition of the deposited metal of its welding rod (%) is: C=0.16, and Si=0.62, Mn=12.8, Cr=13.4, Ni=1.8, B=0.01, S=0.025, P=0.030, remainder is Fe.The Si-Ca alloy content is 0.7 in the coating, Re=0.3, and Nd=0.4, B-Si powder are 0.8.Room temperature is 2 ℃ during welding, and be preheating to 70 ℃ with reel this moment, be incubated 1.5 hours, and room temperature is controlled at more than 20 ℃ during welding, and postwelding buries taking-up after 24 hours with lime.Through using the back to measure, the wear extent of former reel reaches 10mm/, and only is 2.5mm/ with the wear extent of the reel after the welding rod built-up welding of the present invention, 4 times of its anti-wear performance raisings.
3. welding rod of the present invention carries out built-up welding to the broken wall of the ore mill of Anshan iron and steel plant Qidashan iron ore.Broken wall material is M13, and its chemical composition is (%): C=1.1, Mn=13.0.Welding rod deposited metal composition of the present invention (%) is: C=0.21, and Si=0.45, Mn=13.5, Cr=12.8, Ni=1.3, B=0.1, S=0.028, P=0.030, remainder is Fe.The Si-Ca alloy content is 0.7 in the coating, Re=0.2, and Nd=0.4, B-Si powder are 0.9.Room temperature during welding-5 ℃ is preheated to 72～75 ℃ with weldment before the welding, be incubated 1.5 hours, takes out afterwards in 20～25 ℃ of welding of room temperature, and postwelding buries taking-up after 24 hours with lime.Former broken wall service life is about 10 days, now uses more than 40 days, and improve more than 4 times its service life.
Claims (3)
1, a kind of manganese steel built-up welding welding rod is characterized in that its deposited metal composition (percentage by weight) is: C=0.08～0.25; Si=0.30～1.50; Mn=3.0～15.0; Cr=5.0～15.0; Ni=0.5～2.0; B=0.005～0.1; P≤0.03; S≤0.03, remainder is Fe.
2, a kind of manganese steel built-up welding welding rod as claimed in claim 1, it is characterized in that in covering of an electrode, adding strong dephosphorization element sulphur and material Si-Ca alloy and Re element, also add simultaneously and reduce overheated cracking resistance line material and element B-Si powder and Nd, its addition is (percentage by weight): Si-Ca=0.5～1.0; Re=0.1～0.5; Nd=0.1～0.5; B-Si powder=0.5～1.0.
3, a kind of manganese steel built-up welding welding rod as claimed in claim 1 is characterized in that its adopts cold welding in when welding, during promptly in room temperature 〉=10 ℃, and not preheating before the weldering, postwelding does not need heat treatment; Down during welding, can weldment be preheating to 50～80 ℃ earlier in room temperature＜10 ℃, be incubated 1～1.5 hour weldment heat penetration, can weld; The part of postwelding can take out cleaning after burying 24 hours with sand or lime.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94112743 CN1125652A (en) | 1994-12-29 | 1994-12-29 | Special welding electrode for manganese steel build-up welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94112743 CN1125652A (en) | 1994-12-29 | 1994-12-29 | Special welding electrode for manganese steel build-up welding |
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| Publication Number | Publication Date |
|---|---|
| CN1125652A true CN1125652A (en) | 1996-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94112743 Pending CN1125652A (en) | 1994-12-29 | 1994-12-29 | Special welding electrode for manganese steel build-up welding |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489360A (en) * | 2011-12-05 | 2012-06-13 | 于风福 | Comb-tooth-type crusher hammer |
| CN105057909A (en) * | 2015-07-09 | 2015-11-18 | 苏州优霹耐磨复合材料有限公司 | Buffer layer open arc welding wire |
| CN107234364A (en) * | 2017-06-12 | 2017-10-10 | 合肥欧仕嘉机电设备有限公司 | It is a kind of for wear resistance electrode of built-up welding and preparation method thereof |
| CN107962314A (en) * | 2016-10-19 | 2018-04-27 | 珠海奥邦焊接科技有限公司 | A kind of welding wire and its manufacture method |
| CN118357579A (en) * | 2024-06-19 | 2024-07-19 | 中国科学院上海光学精密机械研究所 | Solder, laser welding joint and manufacturing method thereof |
-
1994
- 1994-12-29 CN CN 94112743 patent/CN1125652A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489360A (en) * | 2011-12-05 | 2012-06-13 | 于风福 | Comb-tooth-type crusher hammer |
| CN105057909A (en) * | 2015-07-09 | 2015-11-18 | 苏州优霹耐磨复合材料有限公司 | Buffer layer open arc welding wire |
| CN107962314A (en) * | 2016-10-19 | 2018-04-27 | 珠海奥邦焊接科技有限公司 | A kind of welding wire and its manufacture method |
| CN107234364A (en) * | 2017-06-12 | 2017-10-10 | 合肥欧仕嘉机电设备有限公司 | It is a kind of for wear resistance electrode of built-up welding and preparation method thereof |
| CN118357579A (en) * | 2024-06-19 | 2024-07-19 | 中国科学院上海光学精密机械研究所 | Solder, laser welding joint and manufacturing method thereof |
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