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Continuous extruding process of Zn-Al-Ti alloy tube

A technology of zn-al-ti and alloy pipe, which is applied in the field of metal materials and forming, can solve the problems of poor weldability, high deformation resistance of zinc alloy, poor welding, etc., achieve high production efficiency, improve welding performance, and reduce deformation uniform effect

Inactive Publication Date: 2015-07-15
CHANGSHA QIANGWANG SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Due to the relatively large deformation resistance and poor weldability of zinc alloy, if the existing technology is used for continuous extrusion, poor welding is very easy to occur

Method used

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  • Continuous extruding process of Zn-Al-Ti alloy tube
  • Continuous extruding process of Zn-Al-Ti alloy tube
  • Continuous extruding process of Zn-Al-Ti alloy tube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A continuous extrusion process for Zn-Al-Ti alloy pipes, the steps are as follows:

[0040] The first step: batching, melting and casting

[0041] According to the designed Zn-Al-Ti alloy composition ratio, the raw materials such as zinc, aluminum, copper, magnesium, titanium, chromium and pure cerium are melted in the melting furnace according to the following weight percentages: Al12%; Cu0.5%; Ti0 .05%; Mg0.2%, Cr0.15%; Cerium 0.25%; the rest is zinc and unavoidable impurities (impurity content ≤ 0.15%). Horizontal continuous casting into a Zn-Al-Ti alloy round billet with a diameter of 9mm;

[0042] The second step: cleaning and drying the blank surface

[0043] Clean the surface of the Zn-Al-Ti alloy round billet prepared in the first step, using 10-20% HNO3 or HCl aqueous solution, the solution temperature is 20-40°C, the washing time is 5-10min, and then in 20 After rinsing in clean water at ~40°C for 1-10 minutes, dry naturally;

[0044] The third step: Confo...

Embodiment 2

[0050] Carry out the continuous extrusion process of Zn-Al-Ti alloy pipe material according to embodiment 1, its step is as follows:

[0051] The raw materials such as zinc, aluminum, copper, magnesium, titanium, chromium and pure cerium are melted in the melting furnace according to the following weight percentages: Al12%; Cu0.5%; Ti0.05%; Mg0.2%, Cr0.15% ; cerium 0.25%; the rest is zinc and unavoidable impurities (impurity content ≤ 0.15%), horizontal continuous casting into a Zn-Al-Ti alloy round billet with a diameter of 10.5mm; A Zn-Al-Ti alloy round rod with a diameter of 12mm is extruded in a rotary continuous extrusion machine, the extrusion wheel speed is 10 rpm, and the temperature of the zinc rod at the extrusion exit is about 260°C; the extruded The round bar is sent to the continuous extrusion machine for secondary extrusion, the contact length between the extrusion wheel surface and the arc surface of the groove sealing block is controlled to 220mm-300mm, and the...

Embodiment 3

[0058] 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: Al10%; Cu3.0%; Ti0.5%; Mg0.02%, Cr0.03%; Rare earth 0.15%; the rest is zinc and unavoidable impurities (impurity content ≤ 0.15%), horizontal continuous casting into a Zn-Al-Ti alloy round billet with a diameter of 11mm; the surface is cleaned and dried and then sent to the rotary A Zn-Al-Ti alloy round rod with a diameter of 13.5mm is extruded in a continuous extrusion machine, the extrusion wheel speed is 12 rpm, and the temperature of the zinc rod at the extrusion exit is about 280°C; the extruded round The rod is sent to the continuous extrusion machine for secondary extrusion, the contact length between the extrusion wheel surface and the arc surface of the groove sealing block is controlled to 220mm~300mm, and the running gap is less than 0.3mm, so that the deformed zinc alloy billet and the ...

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Abstract

The invention relates to a continuous extruding process of a Zn-Al-Ti alloy tube. The continuous extruding process comprises the following steps of: batching; horizontally and continuously casting to form a circular rod blank; carrying out Conform continuous extrusion onto the circular rod blank to form a circular rod; and carrying out Conform continuous extrusion onto the obtained circular rod to form a circular tube. According to the continuous extruding process of the Zn-Al-Ti alloy tube, the continuous extrusion process is adopted twice for firstly extruding the continuous-casting rod blank into the rod material of the same dimension, so that the tissue and performances of the blank material are improved; and the rod material, which is extruded out at the first time, is extruded into the circular tube by adopting a Conform continuous extruder for the second time. According to the continuous extruding process of the Zn-Al-Ti alloy tube, a set of complete Conform continuous extrusion process parameters are determined, and an extrusion mould with a stepped mould neck structure is adopted, so that the Zn-Al-Ti alloy tube with good welding, good surface quality and good mechanical performances is extruded by strengthening the secondary welding. Besides, the continuous extruding process of the Zn-Al-Ti alloy tube is short in process flow, low in energy consumption, high in material utilization rate, good in tube welding, good in application prospect and popularization value.

Description

technical field [0001] The invention belongs to the technical field of metal materials and forming, and in particular relates to a continuous extrusion process of Zn-Al-Ti alloy pipes. Background technique [0002] Zinc alloy is a non-ferrous alloy material produced by adding other elements to zinc as a matrix. Since zinc and most zinc alloys have a hexagonal close-packed (hcp) crystal structure and few slip systems, only the basal slip system can start during plastic deformation at room temperature, and the fluidity and weldability are not good. difficulty. In recent years, zinc and zinc alloy plates, rods, and wires can be produced by rolling, heating, extrusion, and drawing, and have been widely used in battery cases, anode plates, printing plates and computers, printer parts, communications, bridges, high-speed Highway guardrail, shipbuilding and other technical fields. [0003] However, the zinc alloy pipe has not realized its extensive application value, mainly due ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C23/02
Inventor 郭道强林高用张锐张宗鹏蒋华
Owner CHANGSHA QIANGWANG SCI & TECH DEV
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