Magnesium alloy is the smallest and lightest metal among common metals, and has good processing performance. It is one of the important materials for automobile lightweight materials. And the consumption of cutting power of magnesium alloy is lower than that of other metals. However, in the process of magnesium alloy cutting, there are two problems that are easy to occur, which have been puzzling the popularization and application of magnesium alloys. The little editor of Nobo gives you a brief summary as follows:
Processing of magnesium alloy auto parts
1. Common problems and cause analysis of magnesium alloy cutting:
1.1 Magnesium alloy is easy to burn in the process of cutting: due to the high activity and low ignition point of magnesium element metal, the high-temperature gas generated in the process of cutting magnesium alloy accelerates the chemical reaction between magnesium chips and oxygen in the air, resulting in combustion and even explosion.
1.2 During the cutting process of magnesium alloy, the processing machine tools and CNC processing parts are easy to be corroded: in the actual production and processing process, it can be found that the machine tools that use conventional emulsion to process magnesium alloy are more corroded than the machine tools that cut other metals. At the same time, the magnesium alloy parts that cut and process are also more vulnerable to corrosion, which is mainly due to the magnesium alloy cutting process, Most of the time, the large surface of the machine tool is wetted with small magnesium chips, and the magnesium chips have electrochemical corrosion with the surface of the iron casting machine tool.
Processing of magnesium alloy parts
2. Solutions to problems in magnesium alloy cutting:
The general functions of metalworking cutting fluid are cooling, lubrication, cleaning and rust prevention. According to the characteristics of magnesium alloy, the selection of cutting fluid should focus on the performance of cooling, cleaning and rust prevention. The cutting fluid reduces the cutting temperature through heat conduction, so that the temperature of magnesium chips is kept below the ignition point during processing, thus avoiding the occurrence of combustion. Mineral oil cutting fluid can inhibit chemical reaction during magnesium alloy cutting and reduce corrosion, but it has poor cleaning effect, high cost and is easy to catch fire. Therefore, magnesium alloy cutting technicians should choose the appropriate cutting fluid according to the actual production situation.
