CN101555569A - High-alloy casting and production process thereof - Google Patents
High-alloy casting and production process thereof Download PDFInfo
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- CN101555569A CN101555569A CNA2009103021973A CN200910302197A CN101555569A CN 101555569 A CN101555569 A CN 101555569A CN A2009103021973 A CNA2009103021973 A CN A2009103021973A CN 200910302197 A CN200910302197 A CN 200910302197A CN 101555569 A CN101555569 A CN 101555569A
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Abstract
The invention discloses a high-alloy casting and a production process thereof. The weight percentage content of each component of the casting is as follows: 3.00-3.40 percent of carbon, 20.00-22.00 percent of chromium, 0.5-1.00 percent of Mn, 1.40-1.80 percent of silicon, 0.50-0.55 percent of Mo, 1.00-1.50 percent of nickel, 0.10-0.13 percent of vanadium, 0.10-0.15 percent of rare earth, no more than 0.04 percent of P, no more than 0.004 percent of S, and the balance of iron and impurities. The invention is divided into twice heat treatment; for the first heat treatment, the temperature is 400-950 DEG C, the time is 40 hours; and for the second heat treatment, the tempering temperature is 200-350 DEG C, and the time is 9 hours. By adopting the technical proposal, the invention leads the components of metal elements to be stable, improves the wear resistance of the product, can also eliminate internal stress and improve the stability of product performance.
Description
Technical field
The present invention relates to a kind of alloy-steel casting and production technique thereof, especially a kind of high-alloy casting and production technique thereof.
Background technology
Alloy-steel casting is widely used in China, is mainly used in fields such as mineral products, machinery, building materials, belongs to the rapid wear wearing piece.The alloy-steel casting that for example is used for the vertical mill liner plate is because the industrial and mineral environment is abominable, very high to the wear resisting property requirement of material.Existing alloy-steel casting is owing to adding metallic element component and each set of dispense than irrational reason, and for example the component concentration of chromium is on the low side, can not effectively improve the hardness of alloy-steel casting, has influenced the wear resisting property of foundry goods.In addition, existing alloy-steel casting is owing to only carry out a thermal treatment in process of production, temperature is about 900 ℃, can't effectively eliminate the internal stress that produces in the production process, cause foundry goods in long-time use, can crack or crack performance, the unstable properties of foundry goods also can have influence on work-ing life of foundry goods.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of high-alloy casting and production technique thereof that can improve wear resisting property.
Technical problem to be solved by this invention is achieved by the following technical solution: the weight percentage of each component of high-alloy casting is: carbon 3.00-3.40, chromium 20.0-022.00, manganese 0.5-1.00, silicon 1.40-1.80, molybdenum 0.50-0.55, nickel 1.00-1.50, vanadium 0.10-0.13, rare earth 0.10-0.15, phosphorus≤0.04, sulphur≤0.004, all the other are iron and impurity.
The production technique of high-alloy casting of the present invention, the weight percentage of each component of foundry goods is: carbon 3.00-3.40, chromium 20.00-22.00, manganese 0.5-1.00, silicon 1.40-1.80, molybdenum 0.50-0.55, nickel 1.00-1.50, vanadium 0.10-0.13, rare earth 0.10-0.15, phosphorus≤0.04, sulphur≤0.004, all the other are iron and impurity, and technological process may further comprise the steps:
(1) mould: with the signatory drawing design check and correction of client's contract;
(2) mulling: quartz sand and water glass are mixed rolling 3-8 minute in the trolley type sand mill, the weight percent of quartz sand and water glass is 92-94: 6-8;
(3) moulding: mold flask, rising head, core are examined the back and are operated by working specification;
(4) smelt: prepare A3-45 steel scrap, the 16-22 pig iron and each metallic element by the electric furnace worker and throw in, each metallic element component strictness is measured in proportion;
(5) cast: the cast of driving system control bull ladle, sandbox insulation 36-48 hour;
(6) sand removal: manual handling;
(7) soldering: cutting is mended in hot weld;
(8) ball blast: treating product any surface finish;
(9) thermal treatment: divide second heat treatment in full fiber electronic number car controlling stove, thermal treatment temp is 400-950 ℃ for the first time, and the time is 40 hours, and the tempering heat treatment temperature is 200-350 ℃ for the second time, and the time is 9 hours.
The technique scheme that the present invention adopts, the sandbox soaking time is long during owing to cast, and the metallic element structural constituent is stable; High-load chromium element has also improved the hardness of product, thereby improves the wear resisting property of product; Adopt second heat treatment technology also can eliminate internal stress, reduce crackle, crack performance, the stability of enhancing product performance.
Embodiment
Embodiment 1:
High quinary alloy casting of the present invention, the weight percentage of its each component is: carbon 3.00, chromium 20.00, manganese 0.5, silicon 1.40, molybdenum 0.50, nickel 1.00, vanadium 0.10, rare earth 0.10, phosphorus 0.01, sulphur 0.001, all the other are iron and impurity.
The production technique of high-alloy casting of the present invention includes the following step:
(1) mould: with the signatory drawing design check and correction of client's contract;
(2) mulling: quartz sand and water glass are mixed rolling 3 minutes in the trolley type sand mill, the weight percent of quartz sand and water glass is 92: 8;
(3) moulding: mold flask, rising head, core are examined the back and are operated by working specification;
(4) smelt: prepare A3 steel scrap, No. 16 pig iron and each metallic element by the electric furnace worker and throw in, each metallic element component is strict measures in embodiment 1 ratio;
(5) cast: the cast of driving system control bull ladle, sandbox insulation 36 hours;
(6) sand removal: manual handling;
(7) soldering: cutting is mended in hot weld;
(8) ball blast: treating product any surface finish;
(9) thermal treatment: divide second heat treatment in full fiber electronic number car controlling stove, thermal treatment temp is 400 ℃ for the first time, and the time is 40 hours, and the tempering heat treatment temperature is 200 ℃ for the second time, and the time is 9 hours.
Embodiment 2:
High-alloy casting of the present invention, the weight percentage of its each component is: carbon 3.20, chromium 21.00, manganese 0.80, silicon 1.60, molybdenum 0.52, nickel 1.20, vanadium 0.11, rare earth 0.12, phosphorus 0.02, sulphur 0.002, all the other are iron and impurity.
The production technique of high-alloy casting of the present invention includes the following step:
(1) mould: with the signatory drawing design check and correction of client's contract;
(2) mulling: quartz sand and water glass are mixed rolling 5 minutes in the trolley type sand mill, the weight percent of quartz sand and water glass is 93: 7;
(3) moulding: mold flask, rising head, core are examined the back and are operated by working specification;
(4) smelt: prepare A40 steel scrap, No. 20 pig iron and each metallic element by the electric furnace worker and throw in, each metallic element component is strict measures in embodiment 2 ratios;
(5) cast: the cast of driving system control bull ladle, sandbox insulation 42 hours;
(6) sand removal: manual handling;
(7) soldering: cutting is mended in hot weld;
(8) ball blast: treating product any surface finish;
(9) thermal treatment: divide second heat treatment in full fiber electronic number car controlling stove, thermal treatment temp is 700 ℃ for the first time, and the time is 40 hours, and the tempering heat treatment temperature is 300 ℃ for the second time, and the time is 9 hours.
Embodiment 3:
High-alloy casting of the present invention, the weight percentage of its each component is: carbon 3.40, chromium 22.00, manganese 1.00, silicon 1.80, molybdenum 0.55, nickel 1.50, vanadium 0.13, rare earth 0.15, phosphorus 0.04, sulphur 0.004, all the other are iron and impurity.
The production technique of high-alloy casting of the present invention includes the following step:
(1) mould: with the signatory drawing design check and correction of client's contract;
(2) mulling: quartz sand and water glass are mixed rolling 8 minutes in the trolley type sand mill, the weight percent of quartz sand and water glass is 94: 6;
(3) moulding: mold flask, rising head, core are examined the back and are operated by working specification;
(4) smelt: prepare A45 steel scrap, No. 22 pig iron and each metallic element by the electric furnace worker and throw in, each metallic element component is strict measures in embodiment 3 ratios;
(5) cast: the cast of driving system control bull ladle, sandbox insulation 48 hours;
(6) sand removal: manual handling;
(7) soldering: cutting is mended in hot weld;
(8) ball blast: treating product any surface finish;
(9) thermal treatment: divide second heat treatment in full fiber electronic number car controlling stove, thermal treatment temp is 950 ℃ for the first time, and the time is 40 hours, and the tempering heat treatment temperature is 350 ℃ for the second time, and the time is 9 hours.
Component and production technique that the present invention adopts make the tensile strength of high-alloy casting be not less than 650MPa, and impelling strength is not less than 3J/cm2, and elongation is not more than 8%, and surface hardness can reach 60-62HRC.
Claims (2)
1. high-alloy casting and production technique thereof, the weight percentage that it is characterized in that each component is: carbon 3.00-3.40, chromium 20.00-22.00, manganese 0.5-1.00, silicon 1.40-1.80, molybdenum 0.50-0.55, nickel 1.00-1.50, vanadium 0.10-0.13, rare earth 0.10-0.15, phosphorus≤0.04, sulphur≤0.004, all the other are iron and impurity.
2. the production technique of a high-alloy casting, the weight percentage of each component of foundry goods is: carbon 3.00-3.40, chromium 20.00-22.00, manganese 0.5-1.00, silicon 1.40-1.80, molybdenum 0.50-0.55, nickel 1.00-1.50, vanadium 0.10-0.13, rare earth 0.10-0.15, phosphorus≤0.04, sulphur≤0.004, all the other are iron and impurity, it is characterized in that may further comprise the steps:
(1) mould: with the signatory drawing design check and correction of client's contract;
(2) mulling: quartz sand and water glass are mixed rolling 3-8 minute in the trolley type sand mill, the weight percent of quartz sand and water glass is 92-94: 6-8;
(3) moulding: mold flask, rising head, core are examined the back and are operated by working specification;
(4) smelt: prepare A3-45 steel scrap, the 16-22 pig iron and each metallic element by the electric furnace worker and throw in, each metallic element component strictness is measured in proportion;
(5) cast: the cast of driving system control bull ladle, sandbox insulation 36-48 hour;
(6) sand removal: manual handling;
(7) soldering: cutting is mended in hot weld;
(8) ball blast: treating product any surface finish;
(9) thermal treatment: divide second heat treatment in full fiber electronic number car controlling stove, thermal treatment temp is 400-950 ℃ for the first time, and the time is 40 hours, and the tempering heat treatment temperature is 200-350 ℃ for the second time, and the time is 9 hours.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009103021973A CN101555569B (en) | 2009-05-11 | 2009-05-11 | High-alloy casting and production process thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009103021973A CN101555569B (en) | 2009-05-11 | 2009-05-11 | High-alloy casting and production process thereof |
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| CN101555569A true CN101555569A (en) | 2009-10-14 |
| CN101555569B CN101555569B (en) | 2012-02-29 |
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| CN2009103021973A Expired - Fee Related CN101555569B (en) | 2009-05-11 | 2009-05-11 | High-alloy casting and production process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104099533A (en) * | 2013-04-09 | 2014-10-15 | 丁年花 | Seven-element alloy casting with high chromium, nickel and tungsten content and production process thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1036795C (en) * | 1994-06-28 | 1997-12-24 | 冶金工业部北京冶金设备研究院 | High strength and high chrome cast iron lining plate and its prodn. method |
| US6761777B1 (en) * | 2002-01-09 | 2004-07-13 | Roman Radon | High chromium nitrogen bearing castable alloy |
| AU2003902535A0 (en) * | 2003-05-22 | 2003-06-05 | Weir Warman Ltd | Wear resistant cast iron |
| CN100402687C (en) * | 2004-06-10 | 2008-07-16 | 宝钢集团上海梅山有限公司 | Multielement high-nickel chromium wear-resistant cast iron and its prepn process |
| CN100423858C (en) * | 2006-11-22 | 2008-10-08 | 袁厚之 | Casting high ferrochrome or casting high chromium steel roll for welding steel pipe |
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2009
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104099533A (en) * | 2013-04-09 | 2014-10-15 | 丁年花 | Seven-element alloy casting with high chromium, nickel and tungsten content and production process thereof |
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| CN101555569B (en) | 2012-02-29 |
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Application publication date: 20091014 Assignee: Jiangsu Shuangxing Speical Steel Co., Ltd. Assignor: Gu Kaiming Contract record no.: 2014320000318 Denomination of invention: High-alloy casting and production process thereof Granted publication date: 20120229 License type: Exclusive License Record date: 20140424 |
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