预备热处理

研究了H13钢的锻造、预备热处理、淬火回火、表面热处理对其性能和模具寿命的影响。

The effects on the properties and die lifespan of forging , conditioning heat treatment , quenching ami tempering , surface heat treatment are researched .

两种汽车渗碳齿轮新材料的预备热处理工艺探讨

Study on the Preparatory Heat Treatment Technology about Two Type Material of Automobile Carburized Gear

本锻件经预备热处理和性能热处理，其机械性能满足了技术要求。

The mechanical property of forging must be satisfied the technology requirements after preliminary heat treatment and property heat treatment .

本文对影响齿轮热处理畸变的材料、锻造、预备热处理等因素进行了研究。

In this paper , the effect factors on heat treatment distortion , such as material , forging and preheat treatment etc.

研究了轧辊的预备热处理工艺对感应加热淬火组织的影响，感应加热温度和时间对组织和硬度的影响。

The effect of preheating treatment process of cold rolls on induction heat quenched structures and the effect of heating temperature and time on structure and hardness have been studied .

对此进行了多方面的检验与分析，查找出造成凸轮开裂的真正原因是该凸轮在中频淬火前预备热处理组织不合格，并提出了改进措施。

This paper did a series of work of tests and analyses , We found the real cause because it was fail that the prior structure in the cam before med - frequency quenching , while refered to improvement .