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钢制枪弹药筒是第一次世界大战中,由于铜资源短缺而被迫采用的。在其成份上,长期以来有两种方案,即:英、美等国采用含 C0.3％以上,以获得高强度、高韧性。而西德则一直采用含C0.2％以下,其强度、硬度指标是通过工艺手段来得到的。 第一次世界大战间,钢弹壳生产中曾大量出现开裂、折皱现象。其原因主要是回火温度不当(780℃左右),正好在Ar_1-Ar_3回火脆性区之间。因此现回火温度均要求在
Steel cartridge cartridges were used during World War I due to a shortage of copper resources. In its composition, there are two long-term programs, namely: Britain, the United States and other countries with C0.3% or more, in order to obtain high strength, high toughness. The West Germany has been used with less than C0.2%, its strength, hardness index is obtained through technological means. During World War I, there was a large number of cracks and wrinkles in the steel shell production. The main reason is improper tempering temperature (about 780 ℃), just in the Ar_1-Ar_3 temper brittleness between the areas. Therefore, the tempering temperature is required