本发明属表面热处理行业领域，是一种发蓝的防锈炉子。
The invention belongs to the field of surface heat treatment industry, and relates to a bluing antirust furnace.
大型钢板调质是热处理行业中多年来难以控制变形、淬火变形大、十分棘手的难题之一。
The quenching and tempering for large steel plate is a intractable problem as the large quenching distortion and difficult to control.
该系统具有功能多、系统结构简洁明了、操作性能强等优点，在热处理行业中应用十分广泛。
The system has the multi-functions, simple system and practical operation, therefore, it will be widely used in the heat treating industry.
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