由于加工硬化效应的影响，随着冷拔变形量的增加，合金丝材的室温强度增加，扭转塑性下降。
Due to the effect of strain hardening, higher amount of cold deformation resulted in superior room temperature strength and inferior torsion ductility.
在氧化磨损阶段，由于加工硬化提高了合金的硬度和强度，对合金施以一定程度的冷变形可有效地提高其耐磨性。
At the oxidation wear stage, certain degree of cold deformation can improve the wear resistance of the alloy because of work hardening.
文章介绍了我国目前SO_2吹气硬化冷芯盒制芯的现状、特点、原理及典型的工艺流程；
The paper introduces the present situation, Charac-teristice, principle and typical process flow of SO_2 gassing hardening cold box process in our country.
高频感应淬火不能达到硬化冷精锻直齿圆柱齿轮齿面的目的。
The high frequency induction hardening can't raise the surface microhardness of the cold precision forging spur gear.
经过冷轧和冷拔，柱状晶组织细化为纤维晶组织，并产生显著的加工硬化。
After cold rolled and drawn, the columnar crystals fined to fibrous crystals, which resulted in remarkable work hardening.
在无缝钢管的冷拔过程中，存在着冷作硬化和氢脆现象，它们是造成钢管开裂的主要原因。
There exist problems of cold-working hardening and hydrogen-brittle in the cold-drawing process for seamless steel tube, responsible for the cracking in the steel tube.
铸造用CO2硬化粘结剂系统具有气硬冷芯盒的优点，同时又具有环保方面的优势。
CO2-cured binder system not only has the advantages as a cold-box process but also has the superiority in the environmental protection.
摘要：对980钢进行激光相变硬化研究，分别对其空冷和水冷时淬火硬化层的宽度和深度进行测量，对其组织和硬化层硬度进行分析。
Abstract: The research of laser transformation hardening on steel 980 has been done in this paper. The width, depth and microhardness of quench zone was measured.
快冷段冷速和过时效温度对烘烤硬化性能均无明显影响；
The cooling velocity of fast cooling section and over aging temperature have no significant effect on bake hardening property.
快冷段冷速和过时效温度对烘烤硬化性能均无明显影响；
The cooling velocity of fast cooling section and over aging temperature have no significant effect on bake hardening property.
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