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Zinc alloy plate strip continuous forming method

A zinc alloy, plate and strip technology, applied in the field of alloy plate forming, can solve the problems of difficult control, slow casting and rolling speed, short process, etc., and achieve the effect of large application prospect, reduced energy consumption and cost saving

Inactive Publication Date: 2019-08-16
SHENYANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, this kind of manufacturing method has problems such as long process, high cost, high energy consumption, and low production efficiency.
[0003] Recently, some scholars have proposed to use the method of continuous casting and extrusion to produce zinc and zinc alloy rods and wires, but due to the size limitation of the mold, it is impossible to prepare zinc alloy strips
At present, the continuous forming technology used for metal sheet and strip is mainly continuous casting and rolling, which has problems such as slow casting and rolling speed, low efficiency, poor product structure and performance, cracks on the edge, complex equipment structure, and difficult control.
[0004] The continuous casting and rolling forming technology developed on the basis of continuous casting and rolling technology can directly integrate liquid metal continuous casting and rolling forming technology to realize the integration and continuity of forming, which is a short process and efficient advanced preparation technology, and has been successfully applied in aluminum alloys and magnesium alloys, but the application of this technology in the processing of zinc alloy plates and strips has not been reported.

Method used

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  • Zinc alloy plate strip continuous forming method
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  • Zinc alloy plate strip continuous forming method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Utilize electromagnetic induction heating technology to melt metal zinc completely, and its electric current is 25A, then add metal aluminum, after all metal is melted, heat preservation and stand for 10min; Obtain zinc alloy melt, require its composition to be 22% by weight percentage, balance is Zn;

[0029] Using a continuous casting and rolling machine, the zinc alloy melt is poured into the cavity between the two rolls through the launder. The cooling water flow rate of the launder is 10L / min, and the speed of the roll is 8r / min. Water is passed to the roll for cooling during casting. , the flow rate of cooling water is 15L / min, so that the metal temperature in the cavity is around 250°C, and a zinc alloy sheet with a thickness of no more than 5mm is prepared;

[0030] The final schematic diagram of the continuous casting and rolling machine is as follows: figure 1 As shown, the physical photos of cast-rolled zinc alloy strips are as follows figure 1 The scanning...

Embodiment 2

[0033] Utilize electromagnetic induction heating technology to melt metal zinc completely, and its electric current is 20A, then add metal manganese, after all metals are melted, heat preservation and stand still for 10min; Obtain zinc alloy melt, require its composition to be 1% by weight percentage, balance is Zn;

[0034] Using a continuous casting and rolling machine, the zinc alloy melt is poured into the cavity between the two rolls through the launder. The cooling water flow rate of the launder is 8L / min, and the speed of the roll is 10r / min. Water is passed to the roll for cooling during casting. , the flow rate of cooling water is 12L / min, so that the metal temperature in the cavity is about 200°C, and a zinc alloy sheet with a thickness of no more than 3mm is prepared;

[0035] The obtained zinc alloy sheet has a tensile strength of 186MPa and an elongation of 42%.

Embodiment 3

[0037] Utilize electromagnetic induction heating technology to melt metal zinc completely, and its electric current is 30A, then add metal copper, after all metals are melted, heat preservation and stand still for 15min; Obtain zinc alloy melt, require its composition to be 3.8% by weight percentage, surplus is Zn;

[0038] Using a continuous casting and rolling machine, the zinc alloy melt is poured into the cavity between the two rolls through the launder, the flow rate of cooling water in the launder is 12L / min, the rotational speed of the roll is 12r / min, water is passed to the roll for cooling during casting and rolling , the flow rate of cooling water is 20L / min, so that the metal temperature in the cavity is about 300°C, and a zinc alloy sheet with a thickness of no more than 2mm is prepared;

[0039] The obtained zinc alloy sheet has a tensile strength of 212MPa and an elongation of 15%.

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Abstract

The invention discloses a zinc alloy plate strip continuous forming method, and relates to an alloy plate forming method. Firstly, a magnetic suspension casting technology is used for preparing zinc alloys as metal melts; then, the metal melts are cast in a launder with cooling water to obtain semi-solid-state metal; finally, the semi-solid-state metal is fed in a molding cavity formed by two rollers; the flow of the cooling water is 5-25 L / min; and the rotating speed of the rollers is 5-20 r / min. The temperature of the metal melts at the front ends of the rollers is within 150-300 DEG C; prepared zinc alloy plate strips are directly wound as discs; and the preparation method combines the magnetic suspension casting and rolling technologies of the zinc alloys to achieve real low cost, short flow and near-net-shape production.

Description

technical field [0001] The invention relates to a method for forming an alloy plate, in particular to a method for continuously forming a zinc alloy plate and strip. Background technique [0002] Due to its low melting point, good fluidity, good wear resistance, strong corrosion resistance, easy brazing, welding and easy plastic deformation, zinc alloy is widely used in atmospheric corrosion resistance, hardware, electronics, medical and automotive and other industries. Cast zinc alloys have good fluidity and corrosion resistance, and are suitable for die-casting, automotive parts casings, etc., but have the problems of low strength, poor plasticity and many defects. The cast zinc alloy can improve the strength and plasticity of the zinc alloy through some plastic deformation and heat treatment processes, but the current conventional manufacturing method for preparing zinc alloy sheets and strips is mainly the ingot-rolling process, which has a long process flow and low pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/06
CPCB22D11/001B22D11/0622
Inventor 孙世能常颖高强吴宝举韩晓微
Owner SHENYANG UNIV