Improvement and Application of High Temperature Spinning Closing Technology for High Pressure Seamless Steel Cylinders
In order to solve the problems such as inconsistent thickness of outer diameter or inner diameter of cylinder mouth,difficult closing of fire cylinder and special gas cylinder,and inner black and crack of cylinder mouth,a compound closing die structure spinning machine is used to close the mouth with multiple passes.Among them,the spinning machine spindle speed is 800 r/min,the feed rate is 0.55-2.5 mm/r,the heating temperature is 1 000-1 100℃,and the steel tube wall thickness is 7.7-12 mm,and the high-pressure steel seamless gas cylinder with good forming quality and high qualification rate can be processed.
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