供压模淬火（ＰＲＥＳＳ ＨＡＲＤＥＮＩＮＧ）应用之镀锌钢及制造方法;ZINC-COATED STEEL FOR PRESS HARDENING APPLICATIONS AND METHOD OF PRODUCTION

摘要

可藉由在对钢进行热镀锌(galvanneal)之后及在热压印该钢之前实施预合金化热处理来制造镀锌钢。该预合金化热处理系于介于约850℉与约950℉之间之温度下在松卷退火过程中实施。该预合金化热处理藉由增加铁之浓度而允许以较短时间在奥氏体化(austenitization)温度下在涂层中形成期望的α-Fe相。此亦降低锌之损失，且在热压印后存在更具黏着性之氧化物。 A zinc-coated steel may be produced by performing a pre-alloying heat treatment after galvannealing the steel and prior to the hot stamping the steel. The pre-alloying heat treatment is conducted at a temperature between about 850℉ and about 950℉