| 东方红75(54)拖拉机汽缸套内表面中频感应淬火裂纹分析 |
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| 引用本文： | 牟克,魏永顺,王得洲,苑国祥.东方红75(54)拖拉机汽缸套内表面中频感应淬火裂纹分析[J].佳木斯大学学报,1988(2). |
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| 作者姓名： | 牟克 魏永顺 王得洲 苑国祥 |
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| 作者单位： | 佳木斯工学院机械二系热处理教研室，佳木斯工学院机械二系热处理教研室，佳木斯拖拉机配件厂，佳木斯拖拉机配件厂 |
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| 摘 要： | 本文通过对大量东方红75(54)拖拉机汽缸套实样的观察、分析和比较,认为淬火裂纹是内应力瞬时超过材料强度极限时所产生的一种脆性断裂。影响强度和内应力分布的一切因素都将对淬火开裂有程度不同的影响,石墨呈过冷形态是导致开裂的主要原因。具有过冷石墨组织缸套开裂率是不过冷石墨组织缸套开裂率的57倍。铸造应力。机械加工应力及热处理淬火应力对裂纹形成起促进作用。组织中存在的渗碳体和网状铬复合物使基体脆性增加,有利于裂纹的扩展。
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| 关 键 词： | 缸套 过冷石墨 裂纹 应力 |
A Study of the Induction Quenching Crack of Inside Face on the75 (54) |
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| Mu Ke.A Study of the Induction Quenching Crack of Inside Face on the75 (54)[J].Journal of Jiamusi University(Natural Science Edition),1988(2). |
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| Authors: | Mu Ke |
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| Abstract: | The experimental result show that the producing of the quenching crack is as a result of inside stress exceed the limiting strength of material for an instant.Facter influenced on strength and stress distri- bution all influence the quenching crack.The crack ratio of cylinder with super-cooling graphite structure increase by 5700% then that of non possess super-cooling graphite.Casting stress,maching strcss and quen hing stress mades crack take place easily.Cementite and nete compount- in cylinder promotes expanding of crack. |
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| Keywords: | Cylinder Super-cooling graphite Crack Stress |
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