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模锻锤汽缸套采用Cч21—40铸铁制造,由于硬度低,使用周期很短,每天按三班生产(第三班为调整班),一般用一年多就磨损6～7毫米。我广使用的10吨模锻锤其汽缸套使用十七个月磨损达15～18毫米,严重影响生产。为此对延长汽缸套使用寿命进行了多方试验,实践证明提高硬度可大大提高其使用寿命。 2吨模锻锤汽缸套(φ440/φ内375×1500毫米)提高硬度(Rc40)后,从1969年使用到1977年只磨损3毫米。 3吨模锻锤汽缸套(φ515/φ内445×1575毫米)提高硬度(Rc30)后,1973年使用
Forging hammer cylinder liner made of Cч21-40 cast iron, due to the low hardness, the use of a very short cycle, three classes per day production (third class for the adjustment class), the general use of more than a year on the wear of 6 to 7 mm. I widely used 10 tons of forging hammer cylinder sleeve wear 17 months of use up to 15 to 18 mm, seriously affecting the production. To extend the life of cylinder liner for this multi-party test, the practice proved that increasing the hardness can greatly improve its service life. 2-ton die forging hammer cylinder liner (375 × 1500 mm in φ440 / φ) After the hardness (Rc40) was increased, wear was only 3 mm from 1969 to 1977. 3 ton forging hammer cylinder liner (φ515 / φ 445 × 1575 mm) After increasing the hardness (Rc30), the use of 1973