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有人问,钢坯标准有没有规定比重?提问者大概是要打算钢坯要按理论重量交货。关于此事,我有一点想法供大家参考。 从50年代开始,我们就颁布了热轧初轧坯和方钢坯的品种标准。80年代又颁发了连铸坯标准,均没有规定钢的比重。在GB5068—85《车轴坯》中:计算理论重量时,经过实测结果,得到下列经验公式: G=0.981×10~(-3)×(25+L)a~2b 式中: G=每支钢坯的重量,kg; d=钢的密度785kg/m~3; a=钢坯截面公称边长,mm;
Some people ask, whether the provisions of the proportion of billet standard? The question is about to billet to the theoretical weight of the delivery. On this matter, I have a little idea for your reference. Since the 1950s, we have promulgated a variety of standards for hot-rolled preform and square billets. In the 1980s, the standard of continuous casting slab was issued again. No proportion of steel was specified. In GB5068-85 “car body”: Calculate the theoretical weight, the measured results obtained the following empirical formula: G = 0.981 × 10 ~ (-3) × (25 + L) a ~ 2b Where: G = each B = the weight of the billet, kg; d = the density of the steel 785kg / m ~ 3; a = the billet cross-section nominal side length, mm;