High-precision washing process for raw part of gold coin or silver coin

Abstract

The invention discloses a high-precision washing process for a raw part of a gold coin or a silver coin and relates to the field of surface clearing of work pieces. The high-precision washing process comprises the following sequentially-set steps: emulsification, vacuum water shearing, hydrocarbon washing, vacuum bath-washing and gas-phase washing; therefore high-precision washing of the raw part of the gold coin or silver coin can be realized by means of control on vacuum degree, temperature of a detergent, ultrasonic wave frequency and washing time in each step. The high-precision washing process disclosed by the invention is complete in pollutant treatment, high in yield, high in automation degree in each step and capable of satisfying the environment protection requirements by adopting an environment-friendly detergent in each step.

Description

technical field [0001] The invention relates to the field of workpiece surface cleaning, in particular to a high-precision cleaning process for gold and silver coin mother parts. Background technique [0002] In industrial processing, it is often necessary to clean the material belt before processing. With the requirements for environmental and personal safety, CFC-113 (Freon) and 1.1.1-trichloroethane have been widely used as excellent cleaning agents in the cleaning industry. (Ethane) has been completely banned from production, import, and use, and hydrocarbon-based solvents such as hydrocarbon solutions have become substitutes. The hydrocarbon solution is used in hardware, jewelry, clocks, automobiles, aerospace, electronics, electrical, liquid crystal, semiconductor and other industries, and can effectively remove various oil stains, grease, soldering resin, polishing wax, etc. [0003] The traditional method of cleaning gold and silver coin mother pieces is: manual ult...

AI Technical Summary

Problems solved by technology

[0004] 1. The surface of the product after cleaning is prone to watermark, oxidation, metal powder and other residues, and the defective rate is as high as 8%-30%;

[0005] 2. The cleaning agent is not environmentally friendly, produces a large amount of wastewater, pollutes the environment, and the cost of wastewater treatment is high;

[0006] 3. Manual cleaning is inefficient

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