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Production method of zinc base alloy thin-wall pipe

A technology of thin-walled pipes and zinc alloys, applied in metal extrusion control equipment, metal processing equipment, manufacturing tools, etc., to achieve high precision, low cost, significant economic and social benefits

Inactive Publication Date: 2012-05-23
GRIMAT ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A search of existing technical literature found that there are few patents related to the preparation of zinc-based alloy thin-walled pipes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The preparation of zinc-based alloy thin-walled pipes includes the following steps:

[0023] (1) The processing object is Zn-27Al-1Cu alloy. According to the size of the final product, design and process the shunt combination mold. The shunt combination mold is a channel type shunt combination mold. The number of shunt holes is three holes, and the tongue core diameter of the tongue mold is Φ30mm. , Die hole size is Φ40mm. The diameter of the Zn-27Al-1Cu alloy produced by semi-continuous casting is Φ118mm, the alloy ingot is heated to 200°C by induction heating, the preheating temperature of the mold and the extrusion cylinder is 200°C, and the heated billet is put into the extrusion cylinder , performing hot extrusion with a split-flow combination die, the extrusion speed is 2mm / s, the extrusion ratio is 20.6, the outer diameter of the extruded tube blank is Φ40mm, and the wall thickness is 5mm.

[0024] (2) Adopt LG series cold-rolling mill for rolling diameter reduc...

Embodiment 2

[0028] The preparation of zinc-based alloy thin-walled pipes includes the following steps:

[0029] (1) The processing object is Zn-12Al-2Cu alloy, the splitter combination mold is a channel type splitter combination mold, the number of splitter holes is three holes, the tongue core diameter of the tongue mold is Φ32mm, and the die hole size is Φ40mm. The diameter of the Zn-12Al-2Cu alloy produced by semi-continuous casting is Φ132mm, the alloy ingot is heated to 220°C by induction heating, the preheating temperature of the mold and extrusion barrel is 220°C, and the heated billet is put into the extrusion barrel , hot-extruded by split-flow combination die, the extrusion speed is 4mm / s, the extrusion ratio is 31.6, the outer diameter of the extruded tube blank is Φ40mm, and the wall thickness is 4mm.

[0030] (2) LD series cold-rolled pipe mills are used for rolling diameter reduction and wall reduction, the pass processing rate is 15%, the deformation between annealing is 70...

Embodiment 3

[0034] The preparation of zinc-based alloy thin-walled pipes includes the following steps:

[0035] (1) The processing object is Zn-10Cu-0.2Ti alloy, the splitter combination mold is a channel type splitter combination mold, the number of splitter holes is three holes, the tongue core diameter of the tongue mold is Φ20mm, and the die hole size is Φ26mm. The diameter of the Zn-10Cu-0.2Ti alloy produced by semi-continuous casting is Φ98mm. The alloy ingot is heated to 280°C by induction heating, and the preheating temperature of the mold and extrusion cylinder is 220°C. The heated billet is put into the extrusion In the barrel, hot extrusion is carried out with split-flow combination die, the extrusion speed is 6mm / s, the extrusion ratio is 36.2, the outer diameter of the extruded tube blank is Φ26mm, and the wall thickness is 3mm.

[0036] (2) LD series cold-rolled pipe mills are used for rolling diameter reduction and wall reduction, the pass processing rate is 17%, the deform...

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Abstract

The invention relates to a production method of a zinc base alloy thin-wall pipe, comprising steps of: (1) induction-heating a semi-continuous casting ingot of zinc alloy, and hot-extruding by a split-flow combination die to obtain a pipe blank which is close to finished product in size; (2) performing cold machining to obtain the thin-wall pipe; (3) cleaning and heat-treating; and (4) and then straightening to obtain the finished pipe. The invention provides a novel processing method for zinc base alloy thin-wall pipe, which has the advantages of short process, low cost,high production efficiency and high additional value in the produced zinc base alloy thin-wall pipe; and the processing technology of the zinc base alloy thin-wall pipe provided by the invention is suitable for mass production, and the produced zinc base alloy thin-wall pipe can substitute part of brass pipes, thus helping to solving the problem of scant brass resource in our country, and having obvious economic benefit and social benefit.

Description

technical field [0001] The invention relates to a preparation method of a zinc-based alloy thin-walled pipe, belonging to the field of nonferrous metal processing and forming. Background technique [0002] With the popularization of copper applications, copper resources are in short supply worldwide, and high-performance zinc alloy materials have the characteristics of light specific gravity, moderate strength, high hardness and low cost, and are known as new materials in the 21st century. Its strength, hardness, friction and other properties are similar to those of copper alloys. Therefore, research and development of new zinc alloys, replacing expensive copper with cheap zinc, has significant economic and social benefits, and is also the most effective way to alleviate the shortage of copper resources in China. Promising solution. A search of prior art documents found that there are few patents related to the preparation of zinc-based alloy thin-walled pipes. [0003] Ta...

Claims

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Application Information

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IPC IPC(8): B21C37/06B21C31/00C22F1/16
Inventor 郭胜利杜鹏许晓庆李德富
Owner GRIMAT ENG INST CO LTD
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