Continuous extrusion preparation process of a high-strength weldable zinc alloy and its pipe

A preparation process and zinc alloy technology, which is applied in the field of metal materials and forming, and achieves the effects of reasonable preparation process design, broad application prospects and good welding performance.

Inactive Publication Date: 2011-12-14
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] So far, there is no public report on the continuous extrusion technology of high-strength weldable zinc alloy and its pipes, and this technology is blank at home and abroad

Method used

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  • Continuous extrusion preparation process of a high-strength weldable zinc alloy and its pipe
  • Continuous extrusion preparation process of a high-strength weldable zinc alloy and its pipe
  • Continuous extrusion preparation process of a high-strength weldable zinc alloy and its pipe

Examples

Experimental program
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Effect test

Embodiment 1

[0039]A composition optimization design of a high-strength weldable zinc alloy and a pipe preparation method thereof, the steps of which are as follows:

[0040] The raw materials such as zinc, aluminum, copper, magnesium, titanium, chromium and rare earth are melted in the melting furnace according to the following weight percentages: Al 10%; Cu 3.0%; Ti 0.5%; Mg 0.02%, Cr 0.03%; rare earth 0.15% ; The rest are zinc and unavoidable impurities (impurity content ≤ 0.15%). After smelting, the zinc alloy round rod with a diameter of 9mm is continuously cast horizontally; the zinc alloy round rod is cleaned and sent to the rotary continuous extrusion machine for extrusion through the feeding wheel, and the distance between the extrusion wheel surface and the arc surface of the groove sealing block is controlled. The contact length between them is 220mm ~ 300mm, and the running gap is less than 0.3mm, so that extrusion force and friction will be generated between the deformed zinc ...

Embodiment 2

[0043] A composition optimization design of a high-strength weldable zinc alloy and a pipe preparation method thereof, the steps of which are as follows:

[0044] Raw materials such as zinc, aluminum, copper, magnesium, titanium, chromium and pure cerium are melted in a melting furnace according to the following weight percentages: Al 8%; Cu 2.0%; Ti 0.2%; Mg 0.1%, Cr 0.1%; rare earth 0.1% %; the rest is zinc and unavoidable impurities (impurity content ≤ 0.15%); melting and casting into a zinc alloy round rod with a diameter of 10.5mm; after cleaning the surface and air drying, it is sent to the rotary continuous extrusion machine for extrusion through the feeding wheel, Control the contact length between the extrusion wheel surface and the arc surface of the groove seal block to 220mm-300mm, and the running gap is less than 0.3mm, so that extrusion force and friction will be generated between the deformed zinc alloy billet and the rotary extrusion with grooves, and heat will ...

Embodiment 3

[0047] A composition optimization design of a high-strength weldable zinc alloy and a pipe preparation method thereof, the steps of which are as follows:

[0048] Raw materials such as zinc, aluminum, copper, magnesium, titanium, chromium and pure cerium are melted in a melting furnace according to the following weight percentages: Al 12%; Cu 0.5%; Ti 0.05%; Mg 0.2%, Cr 0.15%; rare earth 0.25% %; the rest is zinc and unavoidable impurities (impurity content ≤ 0.15%); melting and casting into a zinc alloy round rod with a diameter of 12mm; after cleaning the surface and air-drying, it is sent to the rotary continuous extrusion machine for extrusion through the feeding wheel, and the control The contact length between the extrusion wheel surface and the arc surface of the groove sealing block is 220mm~300mm, and the running gap is less than 0.3mm, so that extrusion force and friction will be generated between the deformed zinc alloy billet and the rotary extrusion with grooves, a...

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Abstract

The invention relates to a high-strength weldable zinc alloy, which is composed of the following components: aluminum, copper, titanium, magnesium, chromium, rare earth, and the balance is zinc. The preparation process of the pipe includes the following steps: batching, melting and casting; and continuous extrusion; the invention prepares a high-strength weldable zinc alloy by optimizing the ratio of alloy elements, and then continuously extrudes to form a zinc alloy pipe. The extrusion process does not need to heat the zinc alloy billet, so that the zinc alloy is directly formed in the mold by split extrusion through continuous large shear deformation. The composition ratio of the invention is reasonable, the prepared alloy material has good mechanical properties, is easy to realize extrusion forming, has good weldability, the raw material is cheap and easy to obtain, the preparation process design of the zinc alloy pipe is reasonable, the operability is strong, and the processing efficiency is high. It also solves the outstanding problems of the conventional pipe extrusion process, such as long process flow, high energy consumption, low material utilization rate, and high production cost, and has a good application prospect.

Description

technical field [0001] The invention relates to a continuous extrusion preparation process of a high-strength weldable zinc alloy and its pipe, belonging to the technical field of metal materials and forming. Background technique [0002] Zinc alloy is a non-ferrous alloy material produced by adding other elements to zinc as a matrix. Among the non-ferrous metals, the mineral reserves, output and consumption of zinc are second only to aluminum and copper, ranking third. Zinc alloy has the advantages of low melting point, good casting performance, excellent mechanical properties, short production process, low energy consumption, and low raw material prices. It has become a hot research topic at home and abroad, and is known as a new material in the 21st century. In fact, zinc alloy pipes and fittings can not only replace copper alloys and stainless steels, but also be widely used in sanitary ware, mechanical connections, electronic communications, home appliances, constructi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C18/04C22F1/16B21C23/08
Inventor 林高用王莉曾菊花宋佳胜孙利平张锐
Owner CENT SOUTH UNIV
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