低温表面硬化不锈钢部件的尺寸稳定性*

IF 0.3 Q4 THERMODYNAMICS
A. Bauer, K. Schreiner
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引用次数: 0

摘要

摘要不锈钢通常用于高精密部件,这些部件经常暴露在腐蚀性介质中。然而,它们较差的摩擦学性能限制了这些材料在许多技术应用中的使用。热化学表面硬化是克服这些缺点的一种方法。1000℃以上奥氏体范围内的渗氮主要用于硬化马氏体和铁素体不锈钢。然而,在奥氏体和双相不锈钢牌号中,硬化效果有限。此外,高工艺温度加上必要的快速冷却可能导致非期望的尺寸变化。500°C以下的低温表面硬化处理为提高耐磨性能,同时保持耐腐蚀性提供了有趣的选择。本文论述了热化学表面硬化处理的高、低工艺温度对冷加工aisi304旋转对称精密零件的严格尺寸公差的影响。基于这些结果,将讨论当前和新的工业应用,这些应用受益于低温表面硬化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Dimensional Stability of Low Temperature Surface Hardened Stainless Steel Components*
Abstract Stainless steels are commonly used for high precision components, which often are exposed to corrosive media. However, their inferior tribological behaviour restrict the use of these materials in many technical applications. Thermochemical surface hardening is one way to overcome these weaknesses. Solution nitriding in the austenitic range above 1000 °C is mainly used for hardening martensitic and ferritic stainless grades. In austenitic and duplex stainless grades, however, the hardening effect is limited. Additionally, the high process temperatures combined with a necessary rapid cooling may lead to non-desired dimensional changes. Low temperature surface hardening processing below 500 °C here offers interesting alternatives for increasing the wear properties, while maintaining the corrosion resistance. This paper demonstrates the influence of high and low process temperatures of thermochemical surface hardening treatments on the tight dimensional tolerances of a rotationally symmetrical precision component made from cold worked AISI 304. Based on these results, current and new industrial applications, which benefit from low temperature surface hardening, will be discussed.
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来源期刊
CiteScore
1.50
自引率
33.30%
发文量
43
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