序言众所周知,碳钢的水火弯板工艺,正如碳钢的焊接一样,已在国内外获得普遍使用。但是,对合金钢进行水火弯板时,因其合金元素会增加钢材在水冷时的淬硬倾向性,所以即使是水火弯板工艺的创始国——日本,长期以来也一直采取谨慎保守的办法,把加热温度限制在A_(c1)以下进行操作。直到一九七二年,日本对合金 Preface As we all know, carbon steel water and fire bending process, just as the welding of carbon steel, has been widely used at home and abroad. However, when the alloy steel is subjected to fire and water bending, its alloying elements increase the hardenability of the steel when it is cooled. Therefore, even Japan, the founding member of the water-steam bending process, has long been adopting a conservative and conservative approach , The heating temperature is limited to below A_ (c1) to operate. Until 1972, Japan’s alloy