In this paper, for the aluminum CNC machining process of residue problems, analyzed the causes of residue, explored several effective removal methods, and put forward the corresponding preventive measures to improve the quality of aluminum machining.
I. Introduction
With the rapid development of China’s manufacturing industry, CNC (computer numerical control) machining technology has been widely used in the field of aluminum parts manufacturing. However, the problem of residues generated during CNC machining has been troubling enterprises. These residues not only affect the appearance quality of aluminum parts, but also may lead to problems in subsequent processes. Therefore, how to effectively remove aluminum CNC machining residue has become the focus of attention of enterprises.
Second, aluminum CNC machining residue causes
1. cutting fluid: in the CNC machining process, cutting fluid plays a cooling, lubrication and rust prevention role. But the cutting fluid in the use of the process is easy to produce chemical reactions with the surface of aluminum parts, the formation of residues.
2. grease: grease on machining equipment and tools may penetrate into the surface of aluminum parts under the action of high temperature, forming oil stains.
3. Aluminum chips: Aluminum chips generated during processing are easily attached to the surface of aluminum parts, forming burrs.
4. oxide film: aluminum parts in the process of high temperature processing, the surface is easy to form a layer of oxide film, affecting the quality of aluminum parts.
Third, the removal of aluminum CNC machining residue methods
1. Cleaning method: the use of ultrasonic cleaning machine, high-pressure water jet and other equipment, aluminum parts immersed in the cleaning solution, through physical and chemical effects to remove residues. Cleaning solution is generally used alkaline or acidic solution, according to the material of aluminum parts and residue composition to choose the right formula.
2. Polishing method: through the polishing equipment on the surface of aluminum parts to grind, remove oxide film and burrs. Polishing paste can be used in the polishing process to improve the removal effect.
3. Mechanical scraping method: use special scraper or grinding head to scrape the surface of aluminum parts to remove residues. This method is suitable for large aluminum parts or parts that are difficult to clean.
4. Heat treatment method: Heat the aluminum parts to a certain temperature to soften or decompose the residue, and then remove it by cleaning or other methods.
Fourth, preventive measures
1. optimize cutting parameters: reasonable choice of cutting speed, feed and depth of cut, reduce the heat generated during processing, reduce the formation of residues.
2. choose the right cutting fluid: according to the aluminum material and processing requirements, choose the cutting fluid with excellent performance, reduce chemical reaction.
3. keep equipment clean: regular cleaning of processing equipment and tools to reduce grease pollution.
4. Optimize the processing technology: use reasonable processing sequence and processing methods to reduce the formation of oxide film on the surface of aluminum parts.
V. Summary
Aluminum CNC machining residues have a great impact on product quality, enterprises should take effective measures to remove residues, and prevent them from the source. Through continuous optimization of processing technology, improve management level, China’s aluminum processing industry will move to a higher level.
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