Processing method of self-lubricating phosphor copper ball extrusion die

Abstract

The invention provides a processing method of a self-lubricating phosphor copper ball extrusion die. The processing method of the self-lubricating phosphor copper ball extrusion die is a method of using a series of treatment processes of 4Cr5MoSiV1(H13) normalizing, tempering, quenching, deep cooling, sulfur carbonitriding and the like for performing self-lubricating treatment on a die for extrusion of copper balls. By using the processing method of the self-lubricating phosphor copper ball extrusion die, the die is high in internal hardness and strength, carbide and nitride of ferrum, molybdenum and chromium are generated on the surface of the die, and simultaneously molybdenum and ferrum sulfide is generated. The die is small in deformation and stable in shape due to the high hardness and the high strength of the die, and the carbide and the nitride which are generated on the surface of the die have high hardness, and therefore the die has good wear-resisting performance under supporting of a high strength and high hardness substrate. Furthermore, the molybdenum and ferrum sulfide is of laminar structure, and thereby has good oil storage and lubricating functions, reduces extrusion resistance, and prolongs life of the die.

Description

technical field [0001] The invention belongs to the field of material technology, and in particular relates to a self-lubricating treatment method of a phosphorus copper ball extrusion die for copper electroplating anodes. Background technique [0002] Generally, phosphor copper balls or phosphor copper angles are used as anodes in the production of printed circuit boards. In order to improve the quality of the coating and reduce the anode mud in electroplating, the smaller the crystal grains of the phosphor copper balls, the better. Therefore, in order to eliminate the continuous casting of copper The columnar grain structure of the rod, the oblique rolling process was used in the early stage, and the grains of the structure after rolling were larger. Recently, the pre-extrusion rolling continuous casting copper rod and copper ball half-mold extrusion process were used to make the structure of the phosphor copper ball reach the micron level. . At present, the extrusion die...

AI Technical Summary

Problems solved by technology

[0004] 1. The method of external lubrication is adopted. The lubricant has a good effect when the lubricating film is maintained well, and the lubricating effect is unstable;

[0005] 2. Coating the coating with anti-friction effect on the mold, but the bonding force between the coating and the mold substrate is low, it is easy to fall off during use, the damage of the mold increases, the life is short, and the cost is high;

[0006] 3. The lubrication effect is poor, and the extrusion force is large;

[0007] 4. The additives in the lubricating fluid (paste) volatilize or decompose under the action of extrusion heat, resulting in environmental pollution, which is harmful to human health;

[0008] 5. The lubrication mechanism is complex and the operating procedures are increased