CN1102178C - 一种曲轴用铜锡球铁材料 - Google Patents
一种曲轴用铜锡球铁材料 Download PDFInfo
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- CN1102178C CN1102178C CN 99112243 CN99112243A CN1102178C CN 1102178 C CN1102178 C CN 1102178C CN 99112243 CN99112243 CN 99112243 CN 99112243 A CN99112243 A CN 99112243A CN 1102178 C CN1102178 C CN 1102178C
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- Prior art keywords
- crankshaft
- tin
- copper
- nodular
- iron material
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- 239000000463 material Substances 0.000 title claims abstract description 10
- 229910001141 Ductile iron Inorganic materials 0.000 title abstract description 5
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 title abstract 2
- 229910017755 Cu-Sn Inorganic materials 0.000 claims abstract description 8
- 229910017927 Cu—Sn Inorganic materials 0.000 claims abstract description 8
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 5
- 239000004615 ingredient Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 8
- 239000010439 graphite Substances 0.000 abstract description 8
- 229910002804 graphite Inorganic materials 0.000 abstract description 8
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 abstract description 7
- 229910052742 iron Inorganic materials 0.000 abstract description 7
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052750 molybdenum Inorganic materials 0.000 abstract description 3
- 239000011733 molybdenum Substances 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 229910001562 pearlite Inorganic materials 0.000 abstract description 2
- 238000005266 casting Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 229910001182 Mo alloy Inorganic materials 0.000 description 3
- WUUZKBJEUBFVMV-UHFFFAOYSA-N copper molybdenum Chemical compound [Cu].[Mo] WUUZKBJEUBFVMV-UHFFFAOYSA-N 0.000 description 3
- 239000010451 perlite Substances 0.000 description 3
- 235000019362 perlite Nutrition 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000011081 inoculation Methods 0.000 description 2
- MHKWSJBPFXBFMX-UHFFFAOYSA-N iron magnesium Chemical compound [Mg].[Fe] MHKWSJBPFXBFMX-UHFFFAOYSA-N 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000007669 thermal treatment Methods 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910001567 cementite Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000009661 fatigue test Methods 0.000 description 1
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Landscapes
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
一种曲轴用铜锡球铁材料，其化学成分为C3.1-3.3%，Si2.15-2.35%，S≤0.03%，P≤0.04%，Mn0.25-0.45%，Cu0.5-0.7%，Sn0.03-0.05%，其余为Fe。本发明由于采用锡代替钼铸造球铁曲轴，其成本低，加入锡后石墨球趋于圆整，个数增加，球径变小，并能强烈的促进珠光体的形成，使曲轴的强度提高稳定达到或超过标准。
Description
本发明涉及曲轴的合金材料，具体地说是一种曲轴用铜锡球铁材料。
目前铸造球铁曲轴均采用铜钼合金球铁材料，经美国DIALOG国际联机检索“金属文摘”及“世界专利索引”，铜锡合金球铁曲轴的相关文献均为零篇。由于钼元素在铸铁中是中强化碳化物形成元素，易阻碍石墨的析出，造成球铁的缩松，影响曲轴的强度，出现废品损失。铜钼合金价格昂贵，产品的成本相对提高。
本发明的目的，就是提供一种降低成本，提高强度能稳定珠光体避免自由渗碳体的出现，生产高牌号球铁曲轴用铜锡球铁材料。
本发明是这样实现的，一种曲轴用铜锡球铁材料，其特征在于其化学成分为C3.1-3.3％，Si2.15-2.35％，S≤0.03％，P≤0.04％，Mn0.25-0.45％，Cu0.5-0.7％，Sn0.03-0.05％，其余为Fe。
本发明由于采用锡代替钼铸造球铁曲轴，其成本低，加入锡后石墨球趋于圆整，个数增加，球径变小，并能强烈的促进珠光体的形成，使曲轴的强度提高稳定达到或超过标准。
本发明一种曲轴用铜锡球铁材料，其化学成分为C3.1-3.3％，Si2.15-2.35％，S≤0.03％，P≤0.04％，Mn0.25-0.45％，Cu0.5-0.7％，Sn0.03-0.05％，其余为Fe。首先原材料选择低锰、低硫、低磷优质生铁，采用冲天炉熔炼，温度大于1450℃出铁，进行球化处理，采用堤坝式冲入法，加入铜、锡，选用5-8稀土镁合金做球化剂，再做孕育处理，采用炉前孕育一次，将出铁水2/3加入75SiFe，然后铸型内孕育一次，再加入75SiFe作孕育剂，将同全部铁水进入型腔内，由于铜锡包内加入熔化，能提高曲轴强度和疲劳极限，铸成铜锡球铁曲轴，再将曲轴的热处理冷却方法采用旋转风雾强化进行冷却，使曲轴组织获得均匀的极细片珠光体。用锡0.03％替代钼0.2-0.35％能大大降低产品的成本，用铜锡合金球铁材料生产6150Q曲轴每支可以比铜钼合金球铁的成本降低50元。经过试验选用C3.2％，Si2.2％，S0.02％，P0.03％，Mn0.30％，Cu0.5％，Sn0.03％，其余为Fe，铸成的曲轴，其性能测试数据为抗拉强度1045MPa，延伸率4.0％，球化级别2级，石墨大小6级，球光体含量95％；选用C3.3％，Si2.2％，S0.02％，P0.03％，Mn0.30％，Cu0.6％，Sn0.04％，其余为Fe，铸成的曲轴，其性能测试数据为抗拉强度1058MPa，延伸率3.9％，球化级别2级，石墨大小6级，球光体含量95％。由于加入锡后石墨球趋于圆整，个数增加，球径变小，并能强烈的促进形成珠光体，其金相组织较好，加上采用有效的球化孕育方法和科学的热处理冷却方法，使曲轴稳定达到并能超过QT900-2标准，其球化级别为2级，球径大小为6级，珠光体含量95％，抗拉强度大于1000MPa，延伸率大于3％，通过5×106次循环弯曲疲劳试验，疲劳极限310MPa。
Claims (1)
1、一种曲轴用铜锡球铁材料，其特征在于其化学成分为C3.1-3.3％，Si2.15-2.35％，S≤0.03％，P≤0.04％，Mn0.25-0.45％，Cu0.5-0.7％，Sn0.03-0.05％，其余为Fe。
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| Application Number | Priority Date | Filing Date | Title |
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| CN 99112243 CN1102178C (zh) | 1999-06-04 | 1999-06-04 | 一种曲轴用铜锡球铁材料 |
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|---|---|---|---|
| CN 99112243 CN1102178C (zh) | 1999-06-04 | 1999-06-04 | 一种曲轴用铜锡球铁材料 |
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| Publication Number | Publication Date |
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| CN1276437A CN1276437A (zh) | 2000-12-13 |
| CN1102178C true CN1102178C (zh) | 2003-02-26 |
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| CN 99112243 Expired - Fee Related CN1102178C (zh) | 1999-06-04 | 1999-06-04 | 一种曲轴用铜锡球铁材料 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102233407A (zh) * | 2010-04-27 | 2011-11-09 | 上海圣德曼铸造有限公司 | 铸态高强度球铁曲轴铸造方法 |
| CN101982554A (zh) * | 2010-08-30 | 2011-03-02 | 浙江太阳股份有限公司 | 一种曲轴用铜锑合金球铁材料及其制备方法 |
| CN105112770A (zh) * | 2015-09-02 | 2015-12-02 | 常州大学 | 一种高强度高压油缸球铁铸件 |
| CN108588545B (zh) * | 2018-03-19 | 2019-09-13 | 河北硕凯铸造有限公司 | 一种ggg70l球墨铸铁及其制备方法 |
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- 1999-06-04 CN CN 99112243 patent/CN1102178C/zh not_active Expired - Fee Related
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