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Leadless alloy thread preparation

A lead-free alloy and wire drawing technology, which is applied in metal extrusion control equipment, metal processing equipment, metal extrusion, etc., can solve problems such as unclean surface treatment, interruption of wire drawing process, difficult temperature control, etc., to reduce production costs , stable electrical performance, and high utilization

Inactive Publication Date: 2008-09-03
戴兴无
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AI Technical Summary

Problems solved by technology

[0002] At present, in the process of preparing lead-free alloy wire, coke is usually used to melt the raw material, but the temperature of coke melting is difficult to control. When the temperature is too high, it is easy to burn the tin film, which leads to the interruption of the wire drawing process.
In addition, during the wire drawing process, the surface of the alloy wire is coated with emulsified oil for lubrication, but the emulsified oil is easy to oxidize the surface of the alloy wire, and the surface treatment is not clean

Method used

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Embodiment Construction

[0007] The present invention is a preparation method of lead-free alloy wire, which comprises the following steps: the first step is to prepare copper, antimony, tin and zinc in proportion, and the copper, antimony, tin and zinc are respectively in weight percentage: Tin 54%, zinc 44%, copper 0.65%, antimony 1.35%, and then put the prepared raw materials into the intermediate frequency melting furnace for melting, the melting temperature is controlled at 420°C, and then stirred, the temperature is lowered to 290°C after stirring evenly , after cooling down, cast it into a cylindrical tin-zinc alloy through a mold; in the second step, put the cylindrical tin-zinc alloy into an extruder to heat and extrude, and form an extruded billet after extrusion. The heating temperature is 125°C, and the extrusion The compact is a wire rod with a diameter of 10mm, and then the wire rod coated with wire drawing oil is drawn through a deceleration wire drawing machine for the first step of wir...

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Abstract

The invention provides a method for producing leadless alloy wires. The method includes the following steps: the first step: compounding copper, antimonium, stannum and zinc at a ratio, melting the compounded mixture in a melting furnace, stirring intensively, cooling, and performing die-casting to obtain a cylindrical Zn / Sn alloy; the second step: extruding the cylindrical Zn / Sn alloy in an extrusion press under heating to form wire materials, subjecting the wire materials to the first-stage wire-drawing treatment using a speed-down wire-drawing machine and performing the second-stage wire-drawing treatment using a single-head wire-drawing machine to obtain the Zn / Sn alloy wire. The method can effectively control the melting temperature, thereby preventing the metal film from being burned.

Description

technical field [0001] The invention relates to a preparation method of lead-free alloy wire. Background technique [0002] At present, in the process of preparing lead-free alloy wire, coke is usually used to melt the raw materials, but the temperature of coke melting is difficult to control. When the temperature is too high, it is easy to burn the tin film, which leads to the interruption of the wire drawing process. In addition, the surface of the alloy wire is coated with emulsified oil for lubrication during wire drawing, but the emulsified oil is easy to oxidize the surface of the alloy wire, and the surface treatment is not clean. Contents of the invention [0003] The invention provides a preparation method of the lead-free alloy wire, which can effectively control the melting temperature and prevent the metal film from burning out. [0004] The present invention adopts the following technical scheme: a preparation method of lead-free alloy wire, which includes th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C37/04C22C1/02C22C13/00B21C23/08B21C31/00B21C1/02B21C9/00
Inventor 戴兴无
Owner 戴兴无
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