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Production Technology of High Precision Seamless Steel Tubes for Sports Guns

A technology of seamless steel pipe and production process, which is applied in the field of production technology of high-precision seamless steel pipe for sports firearms, can solve the problems of low processing efficiency, difficult deep hole processing, serious scrapping, etc., and achieves improved product dimensional accuracy and smoothness, Improve product quality and stability, improve precision and roughness

Active Publication Date: 2016-12-07
GUANGDE DINGLI PRECISION STEEL PIPE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] High-precision small-caliber thick-walled seamless steel pipes for sports firearms have particularly high requirements for steel materials and processing technology, so that the high precision of sports firearms can be met. The current production method that has been used for decades in the market is to use round steel drills. Hole processing, the technological process of round steel drilling is: 45# Φ18 round bar blanking, positioning holes, deep hole drilling with special equipment, reaming, manual straightening, extrusion, copper plating, processing rifling, copper removal , manual straightening, and turning the outer circle. The above traditional processing methods have the following defects: deep hole processing is difficult, and a deep hole with a diameter of 4-5mm is processed on a 500-length round steel, and the processing efficiency is low and the yield is low; The loss of the tool is large and the cost is high; the entire process is complicated, and it is difficult to realize mechanical automation; the production efficiency is low. Based on the annual production of 2 million air gun barrels in the country, only deep hole processing requires more than 100 processing workers nationwide. Not including reaming, extrusion, outer circle processing and other process personnel; the yield rate is low, especially in drilling, reaming and other processes, scrapping is serious; product output and quality cannot be guaranteed

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  • Production Technology of High Precision Seamless Steel Tubes for Sports Guns

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Experimental program
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Effect test

specific Embodiment 1

[0016] Such as figure 1 As shown, the production process of high-precision seamless steel pipes for sports firearms includes the following steps in turn: bar cutting, piercing, annealing, straightening, lubrication treatment, rolling, annealing, straightening, head and tail cutting, inspection, and lubrication treatment , drawing and sizing.

[0017] The material of the bar in bar cutting is 45# steel. The perforation is carried out when heated to a temperature of 1100°C to form a round tube with an outer diameter of Φ42mm and a wall thickness of 6.5mm. The annealing temperature was 850°C. Rolling to form a seamless steel pipe with a wall thickness of 7.5mm and an outer diameter of Φ20mm. The finished product is a barrel blank with an inner diameter of Φ4.5mm and a wall thickness of 3mm. Annealing is processed in a special oxygen-free heat treatment furnace to eliminate residual stress.

[0018] The actual size of the high-precision seamless steel pipe for sports firearms...

specific Embodiment 2

[0019] Such as figure 1 As shown, the production process of high-precision seamless steel pipes for sports firearms includes the following steps in turn: bar cutting, piercing, annealing, straightening, lubrication treatment, rolling, annealing, straightening, head and tail cutting, inspection, and lubrication treatment , drawing and sizing.

[0020] The material of the bar in bar cutting is 45# steel. The perforation is carried out when heated to a temperature of 1300°C to form a round tube with an outer diameter of Φ52mm and a wall thickness of 5.5mm. The annealing temperature is 750°C. Rolling to form a seamless steel pipe with a wall thickness of 3.5mm and an outer diameter of Φ25mm. The finished product is a barrel blank with an inner diameter of Φ5.5mm and a wall thickness of 5.5mm. Annealing is processed in a special oxygen-free heat treatment furnace to eliminate residual stress.

[0021] The actual size of the high-precision seamless steel pipe for sports firearm...

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Abstract

The invention discloses a production process of high-precision seamless steel tubes used for sports guns and relates to the technical field of sports gun production. The production process is characterized by sequentially including the steps of bar material cutting, perforating, annealing, straightening, lubricating treatment, rolling, annealing, straightening, end to end cutting, checking, lubricating treatment, drawing and sizing. By the application of the production process, raw material consumption can be greatly saved, labor force can be greatly saved, precision and roughness can be greatly improved, subsequent processing is benefited, and automatic production can be realized.

Description

Technical field: [0001] The invention relates to the technical field of sports firearms production, in particular to a production process of high-precision seamless steel pipes for sports firearms. Background technique: [0002] High-precision small-caliber thick-walled seamless steel pipes for sports firearms have particularly high requirements for steel materials and processing technology, so that the high precision of sports firearms can be met. The current production method that has been used for decades in the market is to use round steel drills. Hole processing, the technological process of round steel drilling is: 45# Φ18 round bar blanking, positioning holes, deep hole drilling with special equipment, reaming, manual straightening, extrusion, copper plating, processing rifling, copper removal , manual straightening, and turning the outer circle. The above traditional processing methods have the following defects: deep hole processing is difficult, and a deep hole wit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P23/04
CPCB23P15/00
Inventor 王建明
Owner GUANGDE DINGLI PRECISION STEEL PIPE