The main reason for the deterioration of the cutting fluid is that the cutting fluid contains a large amount of bacteria, and the bacteria in the cutting fluid mainly include oxygen-consuming bacteria and anaerobic bacteria. Oxygen-consuming bacteria live in mineral-rich environments, such as water, concentrates of cutting fluids, and oils leaking from machine tools. Under aerobic conditions, they split into two every 20 to 30 minutes. The anaerobic bacteria survive in an environment without oxygen, splitting into two per hour, releasing SO2 by metabolism, smelling rotten eggs, and cutting fluids become black. When the bacteria in the cutting fluid is greater than 106, the cutting fluid becomes odorous. (1) Bacteria enter the cutting fluid mainly through the following channels: 1) Bacteria invade during the preparation process, such as bacteria in the water in which the cutting fluid is prepared. 2) Bacteria in the air enter the cutting fluid. 3) The transfer between the workpiece processes causes the infection of the cutting fluid. 4) The bad habits of the operator, such as littering dirty things. 5) The cleanliness of machine tools and workshops is poor. (2) The method of controlling the growth of bacteria to go to the fine lines of eye cream list, thin waist, face, red blood, how to do mascara, what brand of eyeliner is good to evaluate what eye moisturizing best best antiperspirant which brand is good 1) Use high quality, stable cutting fluid. 2) The preparation of the concentrate with pure water is not only easy to prepare, but also improves the lubricity of the cutting fluid, reduces the amount of removal by the chips, and prevents bacterial attack. 3) When using, the ratio of the concentrated liquid in the cutting fluid should not be too low, otherwise the bacteria will grow easily. 4) Since the oil used in the machine tool contains bacteria, it is necessary to reduce the oil leaked from the machine tool into the cutting fluid as much as possible. 5) When the pH of the cutting fluid is between 8.3 and 9.2, the bacteria are difficult to survive, so new cutting fluid should be added in time to increase the pH. 6) Keep the cutting fluid clean and do not let the cutting fluid come into contact with dirty oil, food, tobacco and other contaminants. 7) Frequent use of fungicides. 8) Keep the workshop and machine tools clean. 9) If there is no filtering device, the oil should be removed regularly to remove dirt. Capo Guitar,Acoustic Guitar Capo,Guitar Capo Metal ,Classical Guitar Capo GUANGZHOU GIDOO MUSICAL INSTRUMENT CO.,LTD , https://www.kymusicstand.com