this paper describes the main characteristics of bottom blowing argon, and by comparing forging adopting the mode of bottom blowing argon process of forging with not using the technology of forging the same time and the same kind of shape of ingot production the same in the forging crack, the results of the ultrasonic flaw detection, grain size, mechanical properties, gas content in liquid steel, the influence of the mold bottom blowing argon through the comparative analysis on the influence of the inclusions, the method of die bottom blowing argon can improve the quality of steel, It is worth promoting. And the principium of die bottom blowing argon is discussed.
Bearing the gravity of rotary kiln barrel and the pressure between riding wheel and rolling ring, the surface defects appeared on casting large rotary kiln rolling ring, which caused large maintenance cost. While the life cycle of the rolling ring would be prolonged by using forging instead. The manufacture processing of large rotary kiln rolling ring was explored for changing casting to forging. The reasonable processing of smelting, forging and heat treatment were established.
By adjusting the chemical composition, optimizing the heat process and using special quenching equipment, a extra-thick complicated end forging with flange is made. The result shows that the extra-thick complicated end forging obtains homogeneous mechanical property.
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