Abstract: In the tool processing industry, the rational use of cutting fluids can not only protect the tools, save production costs, and improve work efficiency, but also enhance the tool processing accuracy and improve the surface smoothness of the processed products. However, in production, choosing the wrong cutting fluid will not only fail to achieve the expected results, but will damage the cutting tools and processing materials; sometimes, although the needs of the cutting tools are met, the processing materials are damaged, which is not worth the gain. The following introduces you to the precautions for selecting cutting fluid. What should be considered when choosing cutting fluid?
In the tool processing industry, rational use of cutting fluid can not only protect the tool, save production costs, improve work efficiency, but also enhance tool processing accuracy and improve The surface smoothness of the processed product. However, in production, choosing the wrong cutting fluid will not only fail to achieve the expected results, but will damage the cutting tools and processing materials; sometimes, although the needs of the cutting tools are met, the processing materials are damaged, which is not worth the gain. Precautions for selecting cutting fluid:
1. Consider the cutting tool
(1) High-speed steel cutting tools have poor heat resistance, so cutting fluid should be used.
(2) Carbide tools have good heat resistance and generally do not require cutting fluid. When necessary, low-concentration emulsion or multi-effect cutting fluid can be used (multi-effect refers to the comprehensive effects of lubrication, cooling, and rust prevention) Good, such as high-speed tapping oil), and the pouring must be fully continuous, otherwise the blade will break due to uneven cold and heat.
2. Consider the processing method
(1) The tools in drilling, reaming, tapping and broaching processes have serious friction with the processed surface, and emulsion is easy to be used , extreme pressure emulsion or extreme pressure cutting oil.
(2) Forming tools, gear tools, etc. are expensive and require long tool service life. Extreme pressure cutting oil (such as vulcanized oil, etc.) can be used.
(3) The grinding temperature is very high, and a large amount of debris and falling sand will be produced. Therefore, the cutting fluid is required to have good cooling and cleaning effects. Emulsion is often used. If Extreme pressure or multi-effect synthetic cutting fluids are more effective.
3. Consider the workpiece material
(1) When cutting plastic materials such as steel, cutting fluid is required.
(2) Cutting fluid is not needed when cutting brittle materials such as cast iron and bronze, and its effect is not obvious.
(3) When cutting high-strength steel, high-temperature alloys and other difficult-to-machine materials, they are in a high-temperature and high-pressure boundary friction state. It is easy to choose extreme pressure cutting oil or extreme pressure emulsion. Sometimes special cutting fluid is required. .
(4) For copper, aluminum and aluminum alloys, in order to obtain higher processing surface quality and processing accuracy, 10 to 20 emulsion or kerosene can be used.