一、负偏差轧制与理论计重的关系负偏差轧制是提高坯—材成材率,降低成本及增加效益的重要途径。理论计算和生产实践都清楚地证明,型钢产品截面的腰部越宽,腰部面积占截面面积的比重越大,负偏差轧制的效果越好;标准规定的负偏差绝对值与腰部厚度的比值越大,负偏差轧制的 First, the negative deviation of the relationship between rolling and theoretical weighting Negative deviation rolling is to improve the billet material into the rate, reduce costs and increase the effectiveness of an important way. Theoretical calculations and production practices have clearly demonstrated that the wider the lumbar section of the profile section, the larger the ratio of the waist area to the cross-sectional area, and the better the negative-deviation rolling effect. The ratio of the absolute value of the negative deviation to the waist thickness Large and negative deviation of the rolling