齿条金相组织的分析

Analysis of the Metallurgical Structure in Racks

通过对齿条金相组织的分析 ,证明齿条原材料中原始组织的非均匀形态的铁素体 (块状铁素体、网状铁素体和半网状铁素体 )是影响齿条奥氏体化、正火组织、球化组织和淬火组织质量的主要因素 ,它影响碳化物的数量、形状、尺寸和分布。实际应用中应针对不同状态的金相组织、不同形态的铁素体 ,相应调整其热处理工艺 (正火、球化退火、淬火 )。建议采用齿条的金相图谱 。

Studying the metallurgical structure showes that the uneven ferrite made up of racks material is the important factor which affects the microstructure changing into austenite,normalization structure、quenched structure and spheroidized structure.And it affects the carbide in number、shape、size and distribution.The heat treatment technique must be adjusted to different metallugical structure and different ferrite.Integra constitution diagram、accurate test zone and the controlled heat treatment is the key to improve the qualities of the racks.