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Plug pin manufacturing process

A manufacturing process and pin technology, which is applied in the field of pin preparation technology, can solve problems such as impact, and achieve the effects of simple process steps, excellent processing performance, and improved safety performance

Inactive Publication Date: 2018-05-25
DONGGUAN ZHENGHAO ELECTRICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Existing plugs and pins are all made of brass by die-casting. Brass is an alloy mainly composed of copper and zinc, which usually contains a certain amount of lead and cadmium to enhance its hardness, strength and chemical corrosion resistance. Performance, while heavy metals will affect the environment, the conductivity of the plug pins made of brass is usually about 25%, and it needs to be further improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The plug pin manufacturing process includes the following steps:

[0031] 1) Die casting

[0032] First, the zinc block is melted at 420°C, and then the molten zinc block is fed into the forming mold, and die-casted into a rough blank of the plug pin; the forming mold can be selected according to the shape and size of the plug pin to be formed, namely The forming mold is replaceable;

[0033] 2) Electroplated red copper

[0034] A layer of red copper is plated on the outer surface of the rough embryo of the plug pin obtained in step 1; the process of electroplating red copper is as follows, first, the rough embryo of the plug pin is degreased and derusted with sulfuric acid, washed with water, dried, and finally placed in copper electroplating Plating red copper in the solution, because zinc belongs to relatively active metal, easy to oxidize, rust and turn black, so it is necessary to use acid to remove oil and rust. The copper electroplating solution includes copper...

Embodiment 2

[0038] The plug pin manufacturing process includes the following steps:

[0039] 1) Die casting

[0040] First, the zinc block is melted at 400°C, and then the molten zinc block is fed into the forming mold, and die-casted into a rough blank of the plug pin; the forming mold can be selected according to the shape and size of the plug pin to be formed, namely The forming mold is replaceable;

[0041] 2) Electroplated red copper

[0042] A layer of red copper is plated on the outer surface of the rough embryo of the plug pin obtained in step 1; the process of electroplating red copper is as follows, first, the rough embryo of the plug pin is degreased and derusted with sulfuric acid, washed with water, dried, and finally placed in copper electroplating Plating red copper in the solution, because zinc belongs to relatively active metal, easy to oxidize, rust and turn black, so it is necessary to use acid to remove oil and rust. The copper electroplating solution includes copper...

Embodiment 3

[0046] The plug pin manufacturing process includes the following steps:

[0047] 1) Die casting

[0048] First, the zinc block is melted at 450°C, and then the molten zinc block is fed into the forming mold, and die-casted into a rough blank of the plug pin; the forming mold can be selected according to the shape and size of the plug pin to be formed, namely The forming mold is replaceable;

[0049] 2) Electroplated red copper

[0050] A layer of red copper is plated on the outer surface of the rough embryo of the plug pin obtained in step 1; the process of electroplating red copper is as follows, first, the rough embryo of the plug pin is degreased and derusted with sulfuric acid, washed with water, dried, and finally placed in copper electroplating Plating red copper in the solution, because zinc belongs to relatively active metal, easy to oxidize, rust and turn black, so it is necessary to use acid to remove oil and rust. The copper electroplating solution includes copper...

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Abstract

The invention relates to the technical field of a pin manufacturing process and particularly relates to a process for manufacturing a plug pin. The manufacturing process comprises the following steps of: (1) die-cast formation, firstly fusing zinc slabs, secondly conveying fused zinc slabs into a molding die, and forming the rough blank of the plug pin in a die-casting method; (2) pure copper electroplating, electroplating one layer of pure copper on the outer surface of the rough blank of the plug pin formed in the step (1); (3) nickel electroplating, electroplating one layer of nickel on the surface of the rough blank of the plug pin electroplated with the pure copper in the step (2), forming the demanded plug pin, taking metallic zinc as a main body formation material, and electroplating one layer of pure copper on the zinc surface; the pure copper is high in purity and the copper content can reach above 99.9%, thus the plug pin nearly does not contain lead, cadmium and other heavy metal and is more environmentally friendly, the conductivity is increased when the excellent processing performance is ensured, the electric conductivity can reach 30-35%, the electric energy loss is reduced, and the price of the zinc is far lower than that of the copper, thus the production cost is reduced; besides the electroplated nickel has antioxidant property, thus the safety performance of the product is improved.

Description

technical field [0001] The invention relates to the technical field of pin preparation technology, in particular to a plug pin manufacturing process. Background technique [0002] Existing plugs and pins are all made of brass by die-casting. Brass is an alloy mainly composed of copper and zinc, which usually contains a certain amount of lead and cadmium to enhance its hardness, strength and chemical corrosion resistance. Performance, and heavy metals will affect the environment, the conductivity of the plug pins made of brass is usually about 25%, and it needs to be further improved. [0003] Therefore, there is an urgent need to provide a plug pin manufacturing process to solve the deficiencies in the prior art. Contents of the invention [0004] The purpose of the present invention is to provide a plug pin manufacturing process. The prepared plug pin has a conductivity of 30-35%, better conductivity, lower resistance, and does not contain lead and cadmium, is more envir...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01R43/16H01R13/03H01R13/04
CPCH01R13/035H01R13/04H01R43/16
Inventor 郭文权
Owner DONGGUAN ZHENGHAO ELECTRICAL CO LTD
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