CN1350069A - High-strength crankshaft of alloy and nodular cast iron and its production process - Google Patents

High-strength crankshaft of alloy and nodular cast iron and its production process Download PDF

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Publication number
CN1350069A
CN1350069A CN 00123113 CN00123113A CN1350069A CN 1350069 A CN1350069 A CN 1350069A CN 00123113 CN00123113 CN 00123113 CN 00123113 A CN00123113 A CN 00123113A CN 1350069 A CN1350069 A CN 1350069A
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cast iron
production method
alloy
production process
strength alloy
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CN 00123113
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CN1122113C (en
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徐振然
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Abstract

The present invention relates to a high-strength alloy nodular graphite cast iron crank shaft and its production method. Its product composition is formed from Fe as main component and other small quantity and trace elements of (wt%) C 3.6-3.8, Si 1.9-2.3, Mn 0.3-0.5, P is less than 0.05, S is less than 0.035, Mg 0.03-0.05, Re 0.02-0.035, Cu 0.4-0.6 and Mo 0.1-0.2. Said production method adopts the cupola furnace to make melting and smelting, and possesses the advantages of simple process, low cost, and its tensile strength is up to 900MPa and its percentage elongation is greater than or equal to 4%.

Description

High-strength alloy ductile iron crankshaft and production method thereof
The present invention relates to a kind of high-strength alloy ductile iron crankshaft and production method thereof.
Producing high-strength alloy ductile iron crankshaft majority at present both at home and abroad is to smelt with cupola melting earlier, improves temperature with electric furnace again, casts then.The bent axle of domestic production generally only can be up to state standards, and promptly tension 700-800Mpa extends 〉=2%, though the external bent axle of producing can surpass above-mentioned standard, production cost height, complex process.
It is simple to the objective of the invention is to study a kind of technology, and cost is low, and the bent axle stretching resistance of production and extension index meet or exceed the high-strength alloy ductile iron crankshaft of external like product level.
The object of the present invention is achieved like this: smelt with cupola melting, back stove manganese addition, silicon, forehearth add magnesium-rare earth, antimony, barium, silicon, copper, molybdenum etc. and repeatedly breed, and pouring temperature is 1370-1400 ℃; The chemical element of product is formed based on Fe, and other is followed successively by with micro-shared % on a small quantity: C3.6-3.8, Si1.9-2.3, Mn0.3-0.5, P＜0.05, S＜0.035, Mg0.03-0.05, Re0.02-0.035, Cu 0.4-0.6, Mo0.1-0.2
Advantage of the present invention is only to smelt with cupola melting, and without electric furnace, so technology is simple, cost is low; The product tension of being produced reaches 900Mpa, extends 〉=4%, and tension is higher by 22% than common homemade bent axle, extends above one times, has met or exceeded external like product level, and is wear-resistant, long service life.
Embodiment: smelt with cupola melting, back stove manganese addition, silicon, forehearth adds magnesium-rare earth, antimony, barium, silicon, copper, molybdenum, repeatedly breeds, and pouring temperature is 1370-1400 ℃; The chemical element of product is formed based on Fe, and other is followed successively by with micro-shared % on a small quantity: C3.6-3.8, Si1.9-2.3, Mn0.3-0.5, P＜0.05, S＜0.035, Mg0.03-0.05, Re0.02-0.035, Cu0.4-0.6, Mo0.1-0.2.

Claims (2)

1, a kind of high-strength alloy ductile iron crankshaft, it is characterized in that: the chemical element of product is formed based on Fe, and other is followed successively by with micro-shared % on a small quantity: C3.6-3.8, Si1.9-2.3, Mn0.3-0.5, P＜0.05, S＜0.035, Mg0.03-0.05, Re0.02-0.035, Cu0.4-0.6, Mo0.1-0.2.
2, a kind of production method of high-strength alloy ductile iron crankshaft is smelted with cupola melting, and back stove manganese addition, silicon is characterized in that: forehearth adds magnesium-rare earth, antimony, barium, silicon, copper, molybdenum, repeatedly breeds, and pouring temperature is 1370-1400 ℃.
CN 00123113 2000-10-23 2000-10-23 High-strength crankshaft of alloy and nodular cast iron and its production process Expired - Fee Related CN1122113C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 00123113 CN1122113C (en) 2000-10-23 2000-10-23 High-strength crankshaft of alloy and nodular cast iron and its production process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 00123113 CN1122113C (en) 2000-10-23 2000-10-23 High-strength crankshaft of alloy and nodular cast iron and its production process

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CN1350069A true CN1350069A (en) 2002-05-22
CN1122113C CN1122113C (en) 2003-09-24

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101225497B (en) * 2007-01-16 2011-01-19 天津勤美达工业有限公司 Ductile iron exhaust manifold, method for preparing the same and device used in preparation
CN101982554A (en) * 2010-08-30 2011-03-02 浙江太阳股份有限公司 Copper-antimony alloy spheroidal graphite cast iron material for crank shafts and preparation method thereof
CN102401129A (en) * 2010-09-15 2012-04-04 上海工程机械厂有限公司 Cast-in piston body and casting method thereof
CN103290302A (en) * 2012-02-27 2013-09-11 徐驰 High-strength alloy nodular cast iron crankshaft
CN103602878A (en) * 2013-11-05 2014-02-26 北京工业大学 Preparation method of high-toughness nodular cast iron
CN105039839A (en) * 2015-08-20 2015-11-11 合肥市田源精铸有限公司 Manufacturing method for nodular cast iron used for crankshaft
CN111206182A (en) * 2020-02-22 2020-05-29 中国第一汽车股份有限公司 Preparation method of low-alloy nodular cast iron for mold

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101893033B (en) * 2009-05-19 2012-08-22 天润曲轴股份有限公司 Bulb ferroalloy crankshaft

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101225497B (en) * 2007-01-16 2011-01-19 天津勤美达工业有限公司 Ductile iron exhaust manifold, method for preparing the same and device used in preparation
CN101982554A (en) * 2010-08-30 2011-03-02 浙江太阳股份有限公司 Copper-antimony alloy spheroidal graphite cast iron material for crank shafts and preparation method thereof
CN102401129A (en) * 2010-09-15 2012-04-04 上海工程机械厂有限公司 Cast-in piston body and casting method thereof
CN103290302A (en) * 2012-02-27 2013-09-11 徐驰 High-strength alloy nodular cast iron crankshaft
CN103602878A (en) * 2013-11-05 2014-02-26 北京工业大学 Preparation method of high-toughness nodular cast iron
CN103602878B (en) * 2013-11-05 2015-09-09 北京工业大学 High tough spheroidal graphite cast iron preparation method
CN105039839A (en) * 2015-08-20 2015-11-11 合肥市田源精铸有限公司 Manufacturing method for nodular cast iron used for crankshaft
CN111206182A (en) * 2020-02-22 2020-05-29 中国第一汽车股份有限公司 Preparation method of low-alloy nodular cast iron for mold

Also Published As

Publication number Publication date
CN1122113C (en) 2003-09-24

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