Manufacturing process of brass alloy for manufacturing corrugated pipe

A brass alloy and manufacturing process technology, applied in the field of bellows manufacturing, can solve the problems of low elasticity, lack of flexibility, hysteresis of brass bellows, etc. effect of life

Inactive Publication Date: 2017-05-31
江苏广通管业制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hysteresis and aftereffect of the brass bellows are large, and the brazeability is better, but the elasticity of the brass bellows is low, and it lacks flexibility during use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] ① Take 2000 parts of brass, 700 parts of phosphor bronze, 350 parts of zinc, 80 parts of manganese, 50 parts of molybdenum, and 5 parts of nickel by weight;

[0017] ②Put brass and phosphor copper into a vacuum induction furnace for smelting and fully mix, then add zinc, manganese, molybdenum and nickel, raise the furnace temperature to 2200°C, fill in argon as a protective gas, control the pressure to 0.03MPa, and fully smelt After mixing, the obtained melt is poured to obtain a brass alloy ingot;

[0018] ③When the brass alloy billet is air-cooled to 700°C, put it into the heat treatment machine and raise the temperature to 1300°C at a rate of 20°C / min, keep it warm for 50 minutes, and then heat it up to 850°C at a rate of 40°C / min after the furnace cools to room temperature , keep warm for 30 minutes;

[0019] ④ Take the brass alloy billet out of the furnace, put it directly into 30% normal temperature sodium chloride solution to cool, and temper after cooling to ro...

Embodiment 2

[0022] ① Get 2400 parts by weight of brass, 750 parts of phosphor bronze, 450 parts of zinc, 120 parts of manganese, 60 parts of molybdenum, and 10 parts of nickel;

[0023] ②Put brass and phosphor copper into a vacuum induction furnace for smelting and fully mix, then add zinc, manganese, molybdenum and nickel, raise the furnace temperature to 2400°C, fill in argon as a protective gas, control the pressure to 0.06MPa, and fully smelt After mixing, the obtained melt is poured to obtain a brass alloy ingot;

[0024] ③When the brass alloy billet is air-cooled to 800°C, put it into the heat treatment machine and raise the temperature to 1400°C at a rate of 30°C / min, keep it for 70 minutes, and then heat it up to 950°C at a rate of 50°C / min after the furnace cools to room temperature , keep warm for 40 minutes;

[0025] ④ Take the brass alloy billet out of the furnace, put it directly into 40% normal temperature sodium chloride solution to cool, and temper after cooling to room t...

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PUM

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Abstract

The invention discloses a manufacturing process of brass alloy for manufacturing a corrugated pipe. According to a manufacturing method, the brass alloy is prepared from the following raw materials of, by weight, 2000-2400 parts of brass, 700-750 parts of phosphor copper, 350-450 parts of zinc, 80-120 parts of manganese, 50-60 parts of molybdenum and 5-10 parts of nickel. According to the brass alloy manufactured through the manufacturing process, the advantages of the brass that delaying and aftereffect are large and solderability is good are maintained while elasticity and tenacity of the brass are greatly enhanced; and the corrugated pipe made of the brass alloy is larger in tortuosity, a pipe body is more soft, the application range of the brass alloy corrugated pipe is obviously expanded, and the service life of the brass alloy corrugated pipe is also effectively prolonged.

Description

technical field [0001] The present invention relates to the field of bellows manufacturing, more precisely, a brass alloy manufacturing process for manufacturing bellows. Background technique [0002] Metal bellows is a kind of corrugated pipe with regular appearance. Commonly used metal bellows include carbon steel, stainless steel, steel-lined plastic, aluminum, etc. It is mainly used for non-concentric axial transmission with small bending radius, or irregular turning, expansion and contraction, or absorbing thermal deformation of pipelines, etc., or it is not convenient to use fixed elbows to connect pipelines, or to connect pipelines with pipelines. device connection. As sensitive components, shock absorbing components, compensating components, sealing components, valve components and pipeline connectors, metal bellows are widely used in automatic control and measuring instruments, vacuum technology, machinery industry, electric power industry, transportation and atomi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/04C22C1/03C22F1/08
CPCC22C9/04C22C1/03C22F1/08
Inventor 徐广林
Owner 江苏广通管业制造有限公司
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