CN1530201A - Fluxless heat-and wear-resistant cast iron alloy surfacing welding electrodes and manufacture thereof - Google Patents
Fluxless heat-and wear-resistant cast iron alloy surfacing welding electrodes and manufacture thereof Download PDFInfo
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- CN1530201A CN1530201A CNA031174930A CN03117493A CN1530201A CN 1530201 A CN1530201 A CN 1530201A CN A031174930 A CNA031174930 A CN A031174930A CN 03117493 A CN03117493 A CN 03117493A CN 1530201 A CN1530201 A CN 1530201A
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Abstract
An uncoated refractory antiwear welding cast iron alloy electrode for build-up welding contains C (2.5-6.5 wt.%), Si (0.8-2.5), Mn (0.4-1.5), Cr (16-35), Nb (0-1.5), Mo (0-3.5), Ni (0-2.0), W (0-2.5), V (0.1-2.0), Ti (0-0.8), Cu (0-1.0), S (0-0.08), P (0-0.1), O (0-0.08), N (0-0.08), Al (0-0.1) and Fe (rest), and is made up by casing method. Its advantages are high hardness of welded layer (more than 42 HRC), and low cost.
Description
Technical field
The invention belongs to welding technology field, relate to a kind of welding rod and manufacture method thereof that is used for equipment component surface overlaying one deck heat-resistant antifriction cast-iron alloy.
Background technology
The plant equipment parts that industries such as mine, metallurgy, chemical industry, machinery are used much need have heat-resistant antifriction, mainly adopt mode processing and fabricatings such as monoblock cast, composite casting and solid forging traditionally.The mechanical strength height of solid forging spare part and cast steel spare part, but hardness is low, not wear-resisting; The hardness height of whole cast iron spare part, but mechanical strength is low, and ability withstands shocks; Though the composite casting spare part has solved the contradiction of hardness and mechanical strength to a certain extent, because that the binding site of iron and steel merges mutually is bad, in use the higher cast part of hardness comes off easily; Therefore, existing now employing mode of build-up wear-resistant heat-resisting alloy on steel matrix is made spare part, and the antiwear heat resisting alloy is fused on steel matrix well.What adopt at present is the alloy electrode of band coating, and the mode by the coating transition obtains required composition.All have welding slag to remove but the alloy electrode that coating is arranged has welded the rear surface, the welding rod postwelding cleaning welding slag time is long, also is not easy to clean out.Be the wearability of assurance spare part, the carbon equivalent height of deposited metal, the crackle that reduce weld seam just needs the high interlayer temperature of maintenance, just must clean out welding slag when the postwelding weld seam still is in high temperature, and during high temperature, the adhesive force of welding slag is stronger, be difficult to it is cleaned out, form dreg defect easily.For the bigger spare part of overlay cladding thickness, the quality of built-up welding can not be guaranteed.
Summary of the invention
The invention provides a kind of direct built-up welding, need not the heat-resistant antifriction cast-iron alloy surfacing welding of coating (protective agent) protection.
Technical scheme of the present invention is:
Welding rod does not have coating, has only core wire, the composition of core wire is (wt%): C:2.5～6.5%, Si:0.4～2.5%, Mn:0.4～1.5%, Cr:16～35%, Nb:0.0～1.5%, Mo:0.0～3.5%, Ni:0.0～2.0%, W:0.0～2.5%, V:0.0～2.0%, Ti:0.0～0.8%, Cu:0.0～1.00%, S≤0.08%, P≤0.10%, O≤0.08%, N≤0.08%, Al≤0.10%, and all the other are Fe.
Welding rod is with intermediate frequency or line frequency furnace melting molten iron, with casting method manufacturings such as sand casting, lost foam casting, permanent mold castings.
Because welding rod of the present invention is the high alloy iron welding rod; carbon equivalent is very high; during built-up welding; under high temperature action, the oxygen in carbon in the welding rod and the iron liquid reacts and generates CO gas, and molten metal is shielded; simultaneously; silicon in the iron liquid, manganese also can remove the partial oxygen in the iron liquid, and therefore, the oxygen content in the iron liquid is not high.And the content of sulphur and phosphorus controlled can be by the melting welding base metal time, to reduce the hot cracking tendency of weld seam.Though welding rod lacks the protective effect of coating; appearance of weld is weaker; nitrogen, the hydrogen content of overlay cladding inside are higher; but do not influence the use of spare part basically; because the precision of these spare parts is often less demanding on the one hand; on the other hand, self-temperature height when spare part uses, the cold crack problem that exists hydrogen to cause hardly.
Compare with the coating alloy electrode is arranged, the present invention has the following advantages:
1, because welding rod does not have coating, need not clear up welding slag in the welding process, welding production efficiency height has alleviated working strength of workers.
2, need not clear up welding slag owing in the welding process, weld seam interlayer temperature height, interlayer fuses, the generation of crackle in the time of can effectively reducing the spare part built-up welding.
3, do not form owing to can directly not casting with the welding rod of coating, production technology is simple.
4, the electrode coating of band coating is more crisp, easily comes off, and the welding rod moisture-sensitive needs baking, use cost height before the weldering; Not the welding rod with coating then use, convenient transportation, cost is low.
The specific embodiment
Below in conjunction with embodiment the present invention is further described:
Embodiment 1
Adopt the intermediate frequency furnace smelting molten iron, its composition (wt%) is: C:4.8%, Si:1.6%, Mn:1.0%, Cr:23%, S:0.046%, P:0.038%, and O≤0.01%, N≤0.01%, Al≤0.02%, all the other are Fe.Made the casting mold cavity of φ 14mm * 350mm with common sand, graphite paint has been gone up in the die cavity spraying, the cast of oven dry back.The molten iron tapping temperature is 1500 ± 20 ℃, and pouring temperature is 1430 ± 20 ℃, treats that molten iron just makes welding rod behind the cool to room temperature in die cavity, and the sand and the coating on welding rod surface are cleaned out and can be used.
The deposited metal top layer average hardness value HRC=56 of welding rod.
Embodiment 2
Adopt the intermediate frequency furnace smelting molten iron, its composition (wt%) is: C:2.5%, Si:0.4%, Mn:0.4%, Cr:16%, S:0.046%, P:0.038%, and O≤0.01%, N≤0.01%, Al≤0.02%, all the other are Fe.Made the casting mold cavity of φ 14mm * 350mm with common sand, graphite paint has been gone up in the die cavity spraying, the cast of oven dry back.The molten iron tapping temperature is 1500 ± 20 ℃, and pouring temperature is 1430 ± 20 ℃, treats that molten iron just makes welding rod behind the cool to room temperature in die cavity, and the sand and the coating on welding rod surface are cleaned out and can be used.
The deposited metal top layer average hardness value HRC=42 of welding rod.
Embodiment 3
Adopt the intermediate frequency furnace smelting molten iron, its composition (wt%) is: C:6.5%, Si:2.5%, Mn:1.5%, Cr:35%, Nb:1.5%, Mo:3.5%, Ni:2.0%, W:2.5%, V:1.5%, Ti:0.8%, Cu:0.2%, S:0.046%, P:0.038%, O≤0.01%, N≤0.01%, Al≤0.02%, all the other are Fe.Made the casting mold cavity of φ 14mm * 350mm with common sand, graphite paint has been gone up in the die cavity spraying, the cast of oven dry back.The molten iron tapping temperature is 1500 ± 20 ℃, and pouring temperature is 1430 ± 20 ℃, treats that molten iron just makes welding rod behind the cool to room temperature in die cavity, and the sand and the coating on welding rod surface are cleaned out and can be used.
Deposited metal top layer average hardness value HRC 〉=60.0 of welding rod.
Embodiment 4
Adopt the intermediate frequency furnace smelting molten iron, its composition (wt%) is C:5.0%, Si:1.8%, Mn:1.1%, V:1.0%, Cr:23%, Nb:0.22%, S:0.046%, P:0.038%, O≤0.01%, N≤0.01%, Al≤0.02%, and all the other are Fe.Made the casting mold cavity of φ 14mm * 350mm with common sand, graphite paint has been gone up in the die cavity spraying, the cast of oven dry back.The molten iron tapping temperature is 1500 ± 20 ℃, and pouring temperature is 1430 ± 20 ℃, treats that molten iron just makes welding rod behind the cool to room temperature in die cavity, and the sand and the coating on welding rod surface are cleaned out and can be used.
Deposited metal top layer average hardness value HRC 〉=58.5 of welding rod.
Embodiment 5
Adopt the intermediate frequency furnace smelting molten iron, its composition (wt%) is: C:5.0%, Si:2.0%, Mn:1.1%, V:0.50%, Cr:26%, Mo:2.0%, Ni:1.5%, W:2.0%, Ti:0.20%, Cu:0.01%, S≤0.030%, P≤0.030%, O≤0.001%, N≤0.001%, Al≤0.01%, all the other are Fe.Made the casting mold cavity of φ 14mm * 350mm with common sand, graphite paint has been gone up in the die cavity spraying, the cast of oven dry back.The molten iron tapping temperature is 1500 ± 20 ℃, and pouring temperature is 1430 ± 20 ℃, treats that molten iron just makes welding rod behind the cool to room temperature in die cavity, and the sand and the coating on welding rod surface are cleaned out and can be used.
Deposited metal top layer average hardness value HRC 〉=60.0 of welding rod.
Welding rod built-up welding 130M with the embodiment of the invention 1
2Sintering machine standard liner plate, be 24 months the average life of liner plate, and be 12 months with the average life span of resistant and wear-resistant cast steel standard liner plate on identical sintering machine of the same size that adopts the integral casting method manufacturing.
With the welding rod built-up welding WC-1000 type grinder hammerhead of the embodiment of the invention 2, about 2000 hours of the average life of tup, be 10 times of potassium steel casting tup life-span.
With the welding rod built-up welding 1300m3 blast furnace swivel chute liner plate of the embodiment of the invention 3, be 10 months the average life of liner plate, is 4～5 months and adopt the average life span of Cr25MoNiW material cast-in-block liner plate.
Welding rod built-up welding 130M with the embodiment of the invention 4
2Sintering machine water-cooled grate plate, be 10 months the average life of water-cooled grate plate, and be 3 months with the average life span of water-cooled grate plate on identical sintering machine of the same size that adopts the composite casting method manufacturing.
Welding rod built-up welding 130M with the embodiment of the invention 5
2Sintering machine material scraping plate, material scraping plate average life on sintering machine is 12 months, and is 6 months with the resistant and wear-resistant cast steel material scraping plate of cast-in-block same size in the average life span of identical sintering machine.
Heat-resistant antifriction cast-iron alloy of the present invention does not have the coating surfacing welding, is applicable to the heat-resistant antifriction spare part of making other mines, metallurgy, chemical industry, mechanical industry yet.
Claims (2)
1, a kind of no coating heat-resistant antifriction cast-iron alloy surfacing welding, it is characterized in that: do not have coating, has only core wire, the composition of core wire is (wt%): C:2.5～6.5%, Si:0.8～2.5%, Mn:0.4～1.5%, Cr:16～35%, Nb:0.0～1.5%, Mo:0.0～3.5%, Ni:0.0～2.0%, W:0.0～2.5%, V:0.0～2.0%, Ti:0.0～0.8%, Cu:0.0～1.00%, S≤0.08%, P≤0.10%, O≤0.08%, N≤0.08%, Al≤0.10%, and all the other are Fe.
2, according to claim 1, a kind of manufacture method of not having coating heat-resistant antifriction cast-iron alloy surfacing welding is characterized in that: with intermediate frequency or line frequency furnace melting molten iron, with method manufacturings such as sand casting, lost foam casting, permanent mold castings.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03117493 CN1263579C (en) | 2003-03-17 | 2003-03-17 | Fluxless heat-and wear-resistant cast iron alloy surfacing welding electrodes and manufacture thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03117493 CN1263579C (en) | 2003-03-17 | 2003-03-17 | Fluxless heat-and wear-resistant cast iron alloy surfacing welding electrodes and manufacture thereof |
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| CN1530201A true CN1530201A (en) | 2004-09-22 |
| CN1263579C CN1263579C (en) | 2006-07-12 |
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| CN100425386C (en) * | 2006-10-26 | 2008-10-15 | 上海金刚冶金材料有限公司 | Alloy tubular wire for tube mould submerged-arc pile-up welding |
| CN101913034A (en) * | 2010-07-30 | 2010-12-15 | 西安理工大学 | Low-hydrogen basic electrode for manual metal arc welding of FV520 (B) stainless steel |
| CN101505910B (en) * | 2006-08-09 | 2012-01-04 | Ing商事株式会社 | Iron-based corrosion resistant wear resistant alloy and deposit welding material for obtaining the alloy |
| CN102335797A (en) * | 2010-07-16 | 2012-02-01 | 西南交通大学 | Service life prolonging technology of wear-resistant metal surfacing cladding layer of tamping pick |
| CN102618778A (en) * | 2012-03-12 | 2012-08-01 | 天津重钢机械装备股份有限公司 | Uncoated electric welding electrode for high-chromium cast iron repair welding |
| CN103820719A (en) * | 2013-11-04 | 2014-05-28 | 熊科学 | Wear-resistant surfacing iron alloy material and production method thereof |
| CN103820702A (en) * | 2013-11-04 | 2014-05-28 | 熊科学 | Wear-resistant iron alloy material |
| CN103820720A (en) * | 2013-11-04 | 2014-05-28 | 熊科学 | Production method of wear-resistant surfacing iron alloy material |
| CN104195420A (en) * | 2014-08-08 | 2014-12-10 | 安徽昱工耐磨材料科技有限公司 | High-chrome wear-resistant cast iron material and heat treatment method |
| CN105397335A (en) * | 2015-12-21 | 2016-03-16 | 四川鸿舰重型机械制造有限责任公司 | Flux-cored wire for overlaying of water-cooled grate plate and scraper plate |
| CN106041370A (en) * | 2016-06-25 | 2016-10-26 | 袁春华 | Preparation method of hardfacing electrode |
| CN107030414A (en) * | 2017-05-22 | 2017-08-11 | 江苏瑞米克金属技术有限公司 | A kind of metal based ceramic metal bead welding wire for being used for coal pulverizer roller set and mill and preparation method thereof |
| CN108015452A (en) * | 2017-12-12 | 2018-05-11 | 攀枝花钢城集团有限公司 | Bead Welding Rod of Wear-Resisting Alloy, production method and the star of reparation tooth and grate plate |
| CN110788517A (en) * | 2019-11-05 | 2020-02-14 | 上海欣冈贸易有限公司 | Steel alloy for welding material |
| CN113579558A (en) * | 2020-04-30 | 2021-11-02 | 宝武特种冶金有限公司 | Nuclear-grade nickel-chromium-iron alloy welding core and manufacturing method thereof |
| CN115612915A (en) * | 2022-10-25 | 2023-01-17 | 宁国东方碾磨材料股份有限公司 | Novel energy-saving cast ball for mine and preparation method thereof |
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| CN100460133C (en) * | 2007-05-23 | 2009-02-11 | 山东大学 | Alloy powder block used for built-up welding |
| CN101658980B (en) * | 2008-08-27 | 2012-05-30 | 北京东方晶格科技发展有限公司 | Open arc overlaying wire material with strong abrasive resistance for grinding roller and grinding disk |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101505910B (en) * | 2006-08-09 | 2012-01-04 | Ing商事株式会社 | Iron-based corrosion resistant wear resistant alloy and deposit welding material for obtaining the alloy |
| CN100425386C (en) * | 2006-10-26 | 2008-10-15 | 上海金刚冶金材料有限公司 | Alloy tubular wire for tube mould submerged-arc pile-up welding |
| CN102335797A (en) * | 2010-07-16 | 2012-02-01 | 西南交通大学 | Service life prolonging technology of wear-resistant metal surfacing cladding layer of tamping pick |
| CN101913034A (en) * | 2010-07-30 | 2010-12-15 | 西安理工大学 | Low-hydrogen basic electrode for manual metal arc welding of FV520 (B) stainless steel |
| CN101913034B (en) * | 2010-07-30 | 2012-11-07 | 西安理工大学 | Low-hydrogen basic electrode for manual metal arc welding of FV520 (B) stainless steel |
| CN102618778A (en) * | 2012-03-12 | 2012-08-01 | 天津重钢机械装备股份有限公司 | Uncoated electric welding electrode for high-chromium cast iron repair welding |
| CN103820720A (en) * | 2013-11-04 | 2014-05-28 | 熊科学 | Production method of wear-resistant surfacing iron alloy material |
| CN103820702A (en) * | 2013-11-04 | 2014-05-28 | 熊科学 | Wear-resistant iron alloy material |
| CN103820719A (en) * | 2013-11-04 | 2014-05-28 | 熊科学 | Wear-resistant surfacing iron alloy material and production method thereof |
| CN104195420A (en) * | 2014-08-08 | 2014-12-10 | 安徽昱工耐磨材料科技有限公司 | High-chrome wear-resistant cast iron material and heat treatment method |
| CN105397335A (en) * | 2015-12-21 | 2016-03-16 | 四川鸿舰重型机械制造有限责任公司 | Flux-cored wire for overlaying of water-cooled grate plate and scraper plate |
| CN106041370A (en) * | 2016-06-25 | 2016-10-26 | 袁春华 | Preparation method of hardfacing electrode |
| CN107030414A (en) * | 2017-05-22 | 2017-08-11 | 江苏瑞米克金属技术有限公司 | A kind of metal based ceramic metal bead welding wire for being used for coal pulverizer roller set and mill and preparation method thereof |
| CN107030414B (en) * | 2017-05-22 | 2020-01-21 | 江苏瑞米克金属技术有限公司 | Metal-based metal-ceramic surfacing welding wire for roller sleeve and grinding disc of coal mill and preparation method thereof |
| CN108015452A (en) * | 2017-12-12 | 2018-05-11 | 攀枝花钢城集团有限公司 | Bead Welding Rod of Wear-Resisting Alloy, production method and the star of reparation tooth and grate plate |
| CN110788517A (en) * | 2019-11-05 | 2020-02-14 | 上海欣冈贸易有限公司 | Steel alloy for welding material |
| CN113579558A (en) * | 2020-04-30 | 2021-11-02 | 宝武特种冶金有限公司 | Nuclear-grade nickel-chromium-iron alloy welding core and manufacturing method thereof |
| CN113579558B (en) * | 2020-04-30 | 2024-02-09 | 宝武特种冶金有限公司 | Nuclear grade nickel-chromium-iron alloy core wire and manufacturing method thereof |
| CN115612915A (en) * | 2022-10-25 | 2023-01-17 | 宁国东方碾磨材料股份有限公司 | Novel energy-saving cast ball for mine and preparation method thereof |
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