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Copper ball preparing method

A technology of copper balls and preparation steps, which is applied in the field of preparation of copper balls, can solve the problems of low material utilization rate, complex process, long cycle, etc., and achieve the effects of optimizing the preparation process, speeding up the preparation efficiency, and reducing quenching deformation

Pending Publication Date: 2017-12-22
江西江南精密科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production of copper balls includes billet casting, forging, rough machining, heat treatment and finishing. The production of copper balls by ordinary methods has a long cycle, complicated process, low material utilization rate and high energy consumption.

Method used

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  • Copper ball preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: a kind of preparation method of copper ball, concrete preparation steps are as follows:

[0028] Step 1: Material selection: Under the condition of 25°C, select a copper block with a copper mass fraction between 90% and 95% for forging;

[0029] Step 2: Forging: Place the copper blocks in Step 1 on copper molds with a mold diameter of 5.2 mm and forge them into ball blanks;

[0030] Step 3: Coarse grinding: Place the ball blank in step 2 in the grinder, use the coarse grinding wheel in the grinder to pressurize the ball blank, remove the outer ring belt and two poles on the ball blank, and file it The allowable error range is between 0.05 and 0.1mm, if it exceeds this range, it will be judged as unqualified;

[0031] Step 4: Fine grinding: Place the coarsely ground ball embryos in step 3 in the fine grinding machine, use the fine grinding wheel in the fine grinder to pressurize and file the coarsely ground ball embryos, and grind the coarsely ground ball ...

Embodiment 2

[0036] Embodiment 2: a kind of preparation method of copper ball, concrete preparation steps are as follows:

[0037] Step 1: Material selection: Under the condition of 25°C, select a copper block with a copper mass fraction between 90% and 95% for forging;

[0038] Step 2: Forging: Place the copper blocks in Step 1 on copper molds with a mold diameter of 5.2 mm and forge them into ball blanks;

[0039] Step 3: Coarse grinding: Place the ball blank in step 2 in the grinder, use the coarse grinding wheel in the grinder to pressurize the ball blank, remove the outer ring belt and two poles on the ball blank, and file it The allowable error range is between 0.05 and 0.1mm, if it exceeds this range, it will be judged as unqualified;

[0040] Step 4: Fine grinding: Place the coarsely ground ball embryos in step 3 in the fine grinding machine, use the fine grinding wheel in the fine grinder to pressurize and file the coarsely ground ball embryos, and grind the coarsely ground ball ...

Embodiment 3

[0045] Embodiment 3: a kind of preparation method of copper ball, concrete preparation steps are as follows:

[0046] Step 1: Material selection: Under the condition of 25°C, select a copper block with a copper mass fraction between 90% and 95% for forging;

[0047] Step 2: Forging: Place the copper blocks in Step 1 on copper molds with a mold diameter of 5.2 mm and forge them into ball blanks;

[0048] Step 3: Coarse grinding: Place the ball blank in step 2 in the grinder, use the coarse grinding wheel in the grinder to pressurize the ball blank, remove the outer ring belt and two poles on the ball blank, and file it The allowable error range is between 0.05 and 0.1mm, if it exceeds this range, it will be judged as unqualified;

[0049]Step 4: Fine grinding: Place the coarsely ground ball embryos in step 3 in the fine grinding machine, use the fine grinding wheel in the fine grinder to pressurize and file the coarsely ground ball embryos, and grind the coarsely ground ball e...

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Abstract

The invention discloses a copper ball preparing method. The copper ball preparing method comprises the specific preparing steps that (1) material selection is carried out, wherein at 25 DEG C, copper billets are selected for forging and pressing; (2) forging and pressing are carried out, wherein the copper billets in the step (1) are placed on a copper die header for forging and pressing for forming ball blanks; (3) coarse grinding is carried out, wherein the ball blanks in the step (2) are placed into a grinding machine, a coarse plain emery wheel in the grinding machine is used for forcing plunge grinding on the ball blanks, and an outer ring strip and two electrode points of each ball blank are removed; and (4) accurate grinding is carried out, wherein coarse grinding ball blanks in the step (3) is placed into a fine grinding machine, a fine wheel in the fine grinding machine is used for forcing plunge grinding on the coarse grinding ball blanks, the coarse grinding ball blanks are ground to have needed ball diameter and surface roughness. By means of the copper ball preparing method, workpiece quenching distortion can be reduced, the workpiece surface hardness is improved, and workpiece surface impurities can be quickly removed; and through repeated plunge grinding on the workpiece surface, the workpiece surface bright and clean degree can be improved.

Description

technical field [0001] The invention relates to the field of processing copper ball products, in particular to a method for preparing copper balls. Background technique [0002] With the development of society, copper balls are widely used in switches, electronics, electrical appliances, handicrafts, accessories, lighting and other fields. Its accuracy, performance, life and reliability play a decisive role in the accuracy, performance, life and reliability of equipment. role. In switches, electronics, and electrical products, copper balls are high-precision products that not only require comprehensive support from mathematics, physics, and many other disciplines, but also require material science, heat treatment technology, precision machining and measurement technology, numerical control technology, and effective numerical methods. And powerful computer technology and many other disciplines serve it, so the copper ball is a product that represents the national scientific ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/08C23C8/64C23C8/20B23P15/00
CPCC22F1/002C22F1/08C23C8/20C23C8/64B23P15/00
Inventor 徐上金
Owner 江西江南精密科技有限公司
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