Generally, semi-synthetic cutting fluids are prone to foaming problems. All synthetic cutting fluids use oil-free formulations and almost no emulsifiers are added, so air release and foaming performance are good, and foaming problems are relatively rare. Now the semi-synthetic products are the most widely used in the market and have the most design and processing fields. It is also a semi-synthetic product that is prone to foaming problems. Let's take a look at the foaming problem of semi-synthetic cutting fluid.
Generally, the defoaming of semi-synthetic cutting fluids depends on defoamer and water hardness (calcium and magnesium ions in water). Traditional defoamers are time-effective, so water hardness plays a decisive role in foam performance. effect. For customers with relatively hard water quality: high requirements for hard water resistance of cutting fluid, but little worry about foam; For customers who use soft water: the requirement for cutting fluid resistance to hard water is low, and there may be concerns about foaming. Therefore, how to select products or design products according to the customer's working conditions and water quality is a very important step. Therefore, according to the process conditions, recommending suitable products can solve the customer's foam problem.
Foaming caused by processing site reasons: 1. The rehydration is irregular and irregular (after adding water, the concentrate should be added) 2. The concentration of the machining fluid is too high 3. The machining fluid is contaminated (residual cleaning agents from other processes, or cleaning agents for cleaning machines, cutting fluids from other brands, etc.) 4. Liquid tank design or volume problem (the design of the liquid return tank is too small, and the foam is too late to stand and eliminate) 5. The temperature of the processing fluid is too high (usually controlled at 20-30°C) Under normal circumstances, the cutting fluid foams. We will check through the above points to find out the cause of the foaming, so as to prescribe the right medicine. If it is the reason that cannot be improved in a short time, such as the reason that the volume of the liquid tank is too small, we will choose a defoamer to solve the foaming problem. At present, the use of defoamer is very convenient, and the effect is also very fast.
