R & D personnel must pay attention to the future development direction of machining cutting fluid
May 28, 2022
Metalworking fluids around the world are facing increasingly stringent environmental and human health challenges. The development trend of metalworking fluid application, components and additives, workplace safety and health, waste liquid treatment, etc. have attracted more and more attention from people in the metalworking fluid industry.
Taking cutting fluid as an example, according to the current situation of metal processing, the focus of future research and development of cutting fluid is to develop towards a single, one or several special functions on the basis of ensuring the improvement of basic indicators, so as to adapt to the specific requirements of metal machining. Require.
【Function and role】 1. Anti-rust function In terms of anti-rust function, special attention should be paid to the anti-rust effect of metal workpieces under high temperature and high humidity conditions (due to the intensification of the greenhouse effect in recent years, the phenomenon of high temperature and high humidity in southern my country has also become aggravated in summer), and the direction of solution should be Emphasis is placed on solving the water-resistant effect of the anti-rust film formed by the cutting fluid on the metal processing surface. There are two main solutions. One is to make the crystals of the passivated anti-rust film on the surface more dense and have a very low Solubility product constant, so as to better prevent the infiltration of water, so as to block the galvanic reaction on the metal surface; in addition, for emulsified cutting fluid, part of its anti-rust effect comes from the cathodic protection of emulsified oil, so for all The resistance to secondary water solubility of the protective film will be a crucial need to be addressed. 2. Lubrication and extreme pressure function In terms of lubrication and extreme pressure functions, traditional micro-emulsion and full-emulsion cutting fluids can basically meet the requirements of modern machine tools. People are more willing to find a Fully Synthetic Cutting Fluid with high lubrication and high extreme pressure, which is actually one of the most advanced topics in the field of cutting fluid research and development. For traditional polyether water-soluble lubricants, In other words, the lower lubricating efficiency and higher price make this type of product basically unsatisfactory, and it is necessary to find another way to combine with more powerful monomer materials. Waste liquid treatment In terms of environmental protection, with the implementation of the country's mandatory zero discharge requirements for industrial wastewater, the operability and ease of cyclic treatment of cutting fluid working fluid wastewater has become a real problem in front of us. Therefore, Cutting fluid manufacturers must consider this issue when developing products. It should be said that the use of anions is easier to post-process than non-ions, so the development of multi-functional and powerful anionic surfactants is extremely important. The direction of improvement of raw material components for cutting fluids in terms of low toxicity, low human irritation and low odor, people's requirements have become higher and higher in recent years. In the understanding of the toxicity of cutting fluids, many people have a wrong concept, thinking that the greater the odor, the greater the toxicity. In fact, there is no absolute necessary connection between the two, but the more obvious irritating odor will at least bring people. It is uncomfortable and unpleasant, so it also needs to be paid attention to. The development of a good cutting fluid also requires the supply of monomer raw materials with excellent performance. In recent years, although many monomer raw materials have been continuously developed, most of them are just simple modification of the molecular structure of traditional raw materials or better purification of products. Few of traditional raw materials are molecularly modified. The revolutionary improvement in structure has also greatly hindered the research and development of new cutting fluids. In the future, one of the improvement directions of cutting fluid raw materials will be artificial chemical modification of natural biomolecular materials, such as chemical grafting of natural hydrolyzed proteins. The obtained materials are not only safer and environmentally friendly, but also often endow cutting fluids with powerful physical and chemical properties. chemical indicators.
