Control measures for spiral pipe production
来源:www.spiralweldedtubemill.com 发表时间:2017-08-31
Spiral pipe equipment manufacturers to control the primary is to improve the plastic resistance of steel pipe, improve the cleanliness of molten steel to reduce the harmful mixed, improve the overall quality of steel. In the production process to choose a reasonable cooling criteria to prevent the internal cracks, from various aspects of the quality of steel pipe.
Spiral steel pipe in the production process reasonable control of heating temperature, by measuring the thermoplastic curve, select the best heating temperature. Tube heating should also pay attention to meet the insulation time to drop the deformation resistance and progress 45 # structure thick-walled spiral pipe resistance.
Spiral steel pipe production process requires more procedures, the final step is to reduce the roll speed, roll speed is the key to the perforation process parameters, the roll speed from low to high changes in the process, there is a start showing a stratified critical roll speed. When the roll speed is low, the tube is simply formed into the cavity; when the roll speed is high, the tube and the 45 # structure spiral pipe simply constitute the stratification shortcoming. In order to eliminate the defects of the tube and the 45 # structure of the spiral steel pipe, the roll speed should be reduced to the beginning of the stratum below the critical roll speed