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Method for producing red brass pipe

A red brass, manufacturing method technology, applied in the direction of pipes, rigid pipes, pipes/pipe joints/pipe fittings, etc., can solve the problems of small aspect ratio, small size, unsuitability, etc., and achieve uniform and good material properties The effect of uniform support and performance

Inactive Publication Date: 2006-03-22
中铝洛阳铜业有限责任公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

For example, in the demand for pipes in the US market, red copper pipes occupy an absolute advantage, and copper water pipes reach 85%, which has a good market prospect; the surface made of this kind has a color similar to copper, and the surface is shiny, non-oxidizing, and uniform in material properties. For red brass pipes with high performance requirements, it is feasible to use industrial electrochemical methods, but this method can only be used for products with small dimensions or small aspect ratios. For pipes with a length of more than 6000mm and an annual output of thousands of For industrialized large-scale production of more than 1 ton, this method is obviously not suitable and economical

Method used

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  • Method for producing red brass pipe
  • Method for producing red brass pipe

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Experimental program
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specific Embodiment approach 2

[0040] Make a red brass tube of φ21.33×2.72mm and O61 state.

[0041] Ingot Casting: The ingot is cast using a melting furnace.

[0042] Heating: use a heating furnace to heat, the heating temperature is 800° C., and the heating time is 1.5 hours.

[0043] Extrusion: Use a hydraulic press for extrusion and preheat the supporting extrusion barrel, perforation needle, extrusion pad and extrusion die. The preheating temperature of the extrusion barrel is 350°C and the preheating time is 3 hours; the preheating temperature of the perforating needle, extrusion pad and extrusion die is 300°C and the preheating time is 3 hours, the extrusion die is φ80mm, and the perforating needle It is φ60mm; the extrusion temperature is 800°C, the extrusion speed is 20mm / min, the extrusion ratio is 21, and it is extruded into a tube blank of φ80×60mm.

[0044] Sawing: Use a circular saw to cut off the head and tail.

[0045] Pickling: pickling the pipe in the pickling tank, the concentration of s...

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Abstract

The production process of red brass pipe includes the steps of: fusion casting, heating, extruding, finishing, acid pickling, inspection, rolling, cutting to required size, inspection, annealing, acid pickling, forming head, drawing, finishing, inspection, deoiling, and product annealing. The present invention features that in common pressure processing apparatus, with common brass as material and through extrusion to generate red, acid pickling to increase color, drawing to decrease color, further acid pickling to increase color and annealing to maintain color, red brass pipe with high anticorrosion and homogeneous performance may be produced in low cost.

Description

Technical field: [0001] The invention belongs to the nonferrous metal pressure processing technology. More specifically, a method of making a red brass tube. technical background: [0002] At present, red brass pipes are very popular in the international market. For example, in the demand for pipes in the US market, red copper pipes occupy an absolute advantage, and copper water pipes reach 85%, which has a good market prospect; the surface made of this kind has a color similar to copper, and the surface is shiny, non-oxidizing, and uniform in material properties. For red brass pipes with high performance requirements, it is feasible to use industrial electrochemical methods, but this method can only be used for products with small dimensions or small aspect ratios. For pipes with a length of more than 6000mm and an annual output of thousands of For the industrialized large-scale production of more than 10,000 tons, this method is obviously unsuitable and uneconomical. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/02B21C23/02C23F14/02C22F1/08
Inventor 王欣太严加伦郭慧稳熊晓明孙德华卢燕陈浩李建涛李振山赵万花秦勇史欣杨海丽雷雨才毅
Owner 中铝洛阳铜业有限责任公司
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