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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

Active Publication Date: 2015-03-25
CHENGDU GREAT HIGH PRESSURE VESSEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is the difficulty in determining the process of the welded 10CrNi3MoV high-pressure seamless steel cylinder, the low-temperature toughness of the material, easy deformation, and easy cracking.

Method used

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  • High-pressure seamless 10CrNi3MoV steel cylinder and manufacturing process thereof
  • High-pressure seamless 10CrNi3MoV steel cylinder and manufacturing process thereof

Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

The invention belongs to the field of machinery manufacturing, particularly relates to a high-pressure seamless 10CrNi3MoV steel cylinder and a manufacturing process thereof, and aims to solve the technical problems of difficulty in manufacturing process determination, poor low-temperature toughness of materials, high probability of deformation and cracking and the like of the current welded type high-pressure seamless 10CrNi3MoV steel cylinder. The scheme is that the high-pressure seamless 10CrNi3MoV steel cylinder adopting seamless 10CrNi3MoV steel pipes as raw materials is provided. The invention further provides a manufacturing process of the high-pressure seamless 10CrNi3MoV steel cylinder. A cylinder body and a seal head of the high-pressure seamless 10CrNi3MoV steel cylinder are seamlessly connected, so that the welding defect is overcome, and meanwhile, with the adoption of the manufacturing process, the low-temperature toughness of steel is further improved.

Description

technical field [0001] The invention belongs to the field of mechanical manufacturing, and in particular relates to a 10CrNi3MoV high-pressure seamless steel cylinder and a manufacturing process thereof. Background technique [0002] As the most widely used special equipment in my country, high-pressure steel cylinders are widely used in automobile, fire protection, chemical, medical, petroleum, energy, urban construction, food, metallurgy, machinery and other departments as a storage and transportation equipment category. At present, the commonly used high-pressure cylinder materials at home and abroad are high-quality carbon steel, high-quality manganese steel, chrome-molybdenum steel or other alloy steels, among which high-quality carbon steel is rarely used, and chrome-molybdenum steel has become the main steel type. 10CrNi3MoV is a high-strength, seawater corrosion-resistant marine steel, which has positive significance for the impact resistance of ship parts and the li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/46C21D1/18C21D9/00B21D22/16B21D41/04B21D51/24B23P15/00
CPCB21D22/16B21D41/04B21D51/24B23P15/00C21D1/18C21D9/0068C22C38/02C22C38/04C22C38/44C22C38/46
Inventor 陈刘斌范俊明周启雄刘大云周志强
Owner CHENGDU GREAT HIGH PRESSURE VESSEL
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