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试验研制了一种适用于制造砂轮成形这类模具的新钢种JK3,该钢具有高的强韧性,热处理微变形性和良好的氮化性能,用于制造砂轮成形模具比45#钢提高寿命1倍以上。
A new type of steel, JK3, has been experimentally developed for the manufacture of molds for wheel forming such as high strength and toughness, heat treatment micro-deformability and good nitriding properties for the purpose of making wheel forming dies longer life than 45 # steel 1 times more.