关键词: 步进式生产线, 热处理, 等温正火, 齿轮轴坯, 智能型

Abstract: An intelligent walking beam isothermal normalizing production line was developed for gear shaft blanks, and the measures adopted in the line to realize the “green”, “precision” and “intelligence” characteristics were introduced in details. The production practice in the past two years shows that, the heat treatment production line has the advantages of stable mechanical operation, fast heating, uniform heating and cooling for workpieces, saving energy and reducing consumption, and high degree of automation. After the normalizing treatment by this production line, the gear shaft blanks own fine and uniform ferrite+pearlite microstructure, which plays a good foundation for the subsequent carburizing and quenching processes. Meanwhile, the moderation and small dispersion of hardness values are beneficial for the improvement of machining.

Key words: walking beam production line, heat treatment, isothermal normalizing, gear shaft blanks, intelligent