CN1276437A - Nodular Fe-Cu-Sn material for crankshaft - Google Patents
Nodular Fe-Cu-Sn material for crankshaft Download PDFInfo
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- CN1276437A CN1276437A CN 99112243 CN99112243A CN1276437A CN 1276437 A CN1276437 A CN 1276437A CN 99112243 CN99112243 CN 99112243 CN 99112243 A CN99112243 A CN 99112243A CN 1276437 A CN1276437 A CN 1276437A
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- nodular
- crankshaft
- bent axle
- iron
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
A nodular Fe-Cu-Sn material for crankshaft contains C (3.1-3.3%), Si (2.15-2.35%), S (less than 0.03%), P (less than 0.04%), Mn (0.25-0.45%), Cu (0.5-0.7%), Sn (0.03-0.05%) and Fe (the rest). Its advantages are use of Sn instead of Mo for lower cost and small diameter of graphite nodules and promoting generation of pearlite, and high strength and stability.
Description
The present invention relates to the alloy material of bent axle, specifically a kind of bent axle nodular Fe-Cu-Sn material.
The casting spherulitic iron crankshaft all adopts the copper molybdenum alloy ductile iron material at present, reaches " World Patent Index " through U.S. DIALOG international online retrieval " metal digest ", and the pertinent literature of gunmetal spherulitic iron crankshaft is zero piece of writing.Because molybdenum element is middle reinforcement carbide forming element in cast iron, easily hinders separating out of graphite, causes the shrinkage porosite of magnesium iron, influences strength of crankshaft, loss due to spoiled work occurs.Copper molybdenum alloy costs an arm and a leg, and the cost of product improves relatively.
Purpose of the present invention just provides a kind of reducing cost, and improves intensity and can stablize the appearance that perlite is avoided free cementite, produces high trade mark spherulitic iron crankshaft nodular Fe-Cu-Sn material.
The present invention is achieved in that a kind of bent axle nodular Fe-Cu-Sn material, it is characterized in that its chemical ingredients is C3.1-3.3%, Si2.15-2.35%, and S≤0.03%, P≤0.04%, Mn0.25-0.45%, Cu0.5-0.7%, Sn0.03-0.05%, all the other are Fe.
The present invention is owing to adopt tin to replace molybdenum casting spherulitic iron crankshaft, and its cost is low, and graphite pebbles is tending towards rounding behind the adding tin, and number increases, and sphere diameter diminishes, and can promote pearlitic formation by intensive, makes strength of crankshaft improve the stable standard that meets or exceeds.
A kind of bent axle nodular Fe-Cu-Sn material of the present invention, its chemical ingredients is C3.1-3.3%, Si2.15-2.35%, S≤0.03%, P≤0.04%, MnO.25-0.45%, Cu0.5-0.7%, Sn0.03-0.05%, all the other are Fe.At first starting material are selected low manganese, low-sulfur, low-phosphorous high duty pig iron, adopt cupola melting, temperature is tapped a blast furnace greater than 1450 ℃, carry out spheroidizing, adopt dam-type to pour method, add copper, tin, select for use the 5-8 magnesium-rare earth to make nodulizing agent, do inoculation again, adopt the stokehold to breed once, will go out molten iron 2/3 and add 75SiFe, breed in the casting mold once then, add 75SiFe again and make nucleating agent, will enter in the die cavity with whole molten iron, because copper Xi Baonei adds fusing, can improve crankshaft strength and safe range of stress, cast the nodular Fe-Cu-Sn bent axle, the thermal treatment method of cooling with bent axle adopts the reinforcement of rotation wind mist to cool off again, makes the bent axle tissue obtain superfine perlite uniformly.Substitute the cost that molybdenum 0.2-0.35% can reduce product greatly with tin 0.03%, produce every on 6150Q bent axle with the gunmetal ductile iron material and can reduce by 50 yuan than the cost of copper molybdenum alloy magnesium iron.Select C3.2% for use through overtesting, Si2.2%, S0.02%, P0.03%, Mn0.30%, Cu0.5%, Sn0.03%, all the other are Fe, the bent axle of casting, its performance test data is tensile strength 1045MPa, unit elongation 4.0%, 2 grades of nodulizing grades, 6 grades of graphite sizes, ball light body burden 95%; Select C3.3% for use, Si2.2%, S0.02%, P0.03%, Mn0.30%, CuO.6%, Sn0.04%, all the other are Fe, the bent axle of casting, its performance test data is tensile strength 1058MPa, unit elongation 3.9%, 2 grades of nodulizing grades, 6 grades of graphite sizes, ball light body burden 95%.Because graphite pebbles is tending towards rounding after adding tin, number increases, and sphere diameter diminishes, and can promote to form perlite by intensive, its metallographic structure is better, adds the thermal treatment method of cooling that adopts effective spheroidization and inoculation method and science, makes stable the reaching also of bent axle can surpass the QT900-2 standard, its nodulizing grade is 2 grades, the sphere diameter size is 6 grades, content of pearlite in alloy 95%, and tensile strength is greater than 1000MPa, unit elongation is greater than 3%, by 5 * 10
6Inferior reversed bending fatigue test, safe range of stress 310MPa.
Claims (1)
1, a kind of bent axle nodular Fe-Cu-Sn material is characterized in that its chemical ingredients is C3.1-3.3%, Si2.15-2.35%, and S≤0.03%, P≤0.04%, MnO.25-0.45%, Cu0.5-0.7%, Sn0.03-0.05%, all the other are Fe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99112243 CN1102178C (en) | 1999-06-04 | 1999-06-04 | Nodular Fe-Cu-Sn material for crankshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99112243 CN1102178C (en) | 1999-06-04 | 1999-06-04 | Nodular Fe-Cu-Sn material for crankshaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1276437A true CN1276437A (en) | 2000-12-13 |
| CN1102178C CN1102178C (en) | 2003-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99112243 Expired - Fee Related CN1102178C (en) | 1999-06-04 | 1999-06-04 | Nodular Fe-Cu-Sn material for crankshaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1102178C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102233407A (en) * | 2010-04-27 | 2011-11-09 | 上海圣德曼铸造有限公司 | Casting method of as-cast high-strength ductile iron crankshafts |
| CN105112770A (en) * | 2015-09-02 | 2015-12-02 | 常州大学 | High-strength high-pressure oil cylinder ductile iron casting |
| CN108588545A (en) * | 2018-03-19 | 2018-09-28 | 河北硕凯铸造有限公司 | A kind of GGG70L spheroidal graphite cast-iron and preparation method thereof |
-
1999
- 1999-06-04 CN CN 99112243 patent/CN1102178C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102233407A (en) * | 2010-04-27 | 2011-11-09 | 上海圣德曼铸造有限公司 | Casting method of as-cast high-strength ductile iron crankshafts |
| 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 |
| CN105112770A (en) * | 2015-09-02 | 2015-12-02 | 常州大学 | High-strength high-pressure oil cylinder ductile iron casting |
| CN108588545A (en) * | 2018-03-19 | 2018-09-28 | 河北硕凯铸造有限公司 | A kind of GGG70L spheroidal graphite cast-iron and preparation method thereof |
| CN108588545B (en) * | 2018-03-19 | 2019-09-13 | 河北硕凯铸造有限公司 | A kind of GGG70L spheroidal graphite cast-iron and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1102178C (en) | 2003-02-26 |
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