| 改善发动机下气缸体加工性能的生产实践 |
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| 引用本文： | 朱孔军,高峻德. 改善发动机下气缸体加工性能的生产实践[J]. 现代铸铁, 2002, 0(4): 38-41 |
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| 作者姓名： | 朱孔军 高峻德 |
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| 作者单位： | 南京泰克西铸铁有限公司,江苏,南京,210028 |
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| 摘 要： | 适当调整化学成分，出铁时采用复合孕育，浇注时增加随流孕育，在最薄外增设冷铁液冒口，改善了铸断面敏感性，改善薄壁基体组织，使下气缸体本体不同部位的硬度差小于30HB，满足了客户要求。
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| 关 键 词： | 加工性能 断面敏感性 发动机下气缸体 复合孕育 灰铸铁 |
| 文章编号： | 1003-8345(2002)04-0038-03 |
Production Practice to Improve Machinability of Bottom Cylinder Block |
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| ZHU Kong-jun,GAO Jun-de. Production Practice to Improve Machinability of Bottom Cylinder Block[J]. Modern Cast Iron, 2002, 0(4): 38-41 |
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| Authors: | ZHU Kong-jun GAO Jun-de |
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| Abstract: | By adjusting casting compositon,adopting C-Si in oculant for tapping inoculation,carrying stream inoculation during pouring pro cess and setting cold metal overflow riser at the most thin sec-tion,the secti on-sensitivity of castings was reduced,the matrix structure of thin section wa s im-proved.As a result,the hardness difference at different locations of t he bottom block casting reduced from HB80to HB30,so that the machinability has been satisfied by the client. |
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| Keywords: | Machinability section sensitivity bottom cylinder block stream inoculation |
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