High-pressure seamless 10CrNi3MoV steel cylinder and manufacturing process thereof
A manufacturing process and seamless steel technology, applied in the field of 10CrNi3MoV high-pressure seamless steel cylinders and its manufacturing process, can solve the problems of low-temperature toughness of materials, difficulty in process determination, easy cracking, etc., achieve low cooling speed, low price, and prevent brittleness cracking effect
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Embodiment 1
[0037] Cut the 10CrNi3MoV seamless steel pipe into a blank with a length of 3180mm according to the billet specification, and check the surface quality of the steel pipe.
[0038] One end of the blank is heated to 1150°C with the furnace, and the heating length is 350mm.
[0039] Immediately spin the heated blank to close, the spinning spindle speed is 260r / s, the mold rotation center is 40mm higher than the tube blank rotation center, the mold rotation centerline and the tube blank rotation centerline are 90°, and the mold rotates along the mold The center line is rotated 90° once to finish closing, and the time is 130s. The starting temperature of closing is 1100°C. During the spinning process, natural gas nozzles are used to supplement the heat, and after spinning, air-cooling is formed.
[0040] Then the other end of the steel cylinder is closed by hot spinning in the same way. After air cooling, trim and drill the neck of the bottle.
[0041] The above-mentioned steel ...
Embodiment 2
[0044] Cut the 10CrNi3MoV seamless steel pipe into a blank with a length of 3180mm according to the billet specification, and check the surface quality of the steel pipe.
[0045] One end of the blank is heated to 1200°C with the furnace, and the heating length is 400mm.
[0046] Immediately spin the heated blank to close, the spinning spindle speed is 260r / s, the mold rotation center is 40mm higher than the tube blank rotation center, the mold rotation centerline and the tube blank rotation centerline are 90°, and the mold rotates along the mold The center line is rotated 90° once to finish closing, and the time is 150s. The starting temperature of closing is 1150°C. During the spinning process, natural gas nozzles are used to supplement the heat, and after spinning, air-cooling is formed.
[0047] Then the other end of the steel cylinder is closed by hot spinning in the same way. After air cooling, trim and drill the neck of the bottle.
[0048] The above-mentioned steel ...
Embodiment 3
[0051] Cut the 10CrNi3MoV seamless steel pipe into a blank with a length of 3180mm according to the billet specification, and check the surface quality of the steel pipe.
[0052] One end of the blank is heated to 1250°C with the furnace, and the heating length is 400mm.
[0053] Immediately spin the heated blank to close, the spinning spindle speed is 260r / s, the mold rotation center is 40mm higher than the tube blank rotation center, the mold rotation centerline and the tube blank rotation centerline are 90°, and the mold rotates along the mold The center line is rotated 90° once to finish closing, and the time is 150s. The starting temperature of closing is 1200°C. During the spinning process, natural gas nozzles are used to supplement the heat, and after spinning, air-cooling is formed.
[0054] Then the other end of the steel cylinder is closed by hot spinning in the same way. After air cooling, trim and drill the neck of the bottle.
[0055] Heat treatment of the abov...
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