Metalworking fluid is an industrial chemical liquid used to cool and lubricate tools and workpieces during metal cutting, cutting and grinding. The cutting fluid is compounded by a variety of super functional additives.
Role of metalworking fluid: Take away heat from workpiece and tool surface; Take away processing debris; Prevent workpiece/tool/machine tool from corrosion; Reduce tool wear; Improve the surface finish; Improve productivity With the increasing amount of total synthetic processing fluid, the importance of ordinary mineral oil emulsifiers has decreased. The demand for surfactants with good emulsification and functions such as lubrication/corrosion inhibition/biodegradability/extreme pressure will become increasingly important. Amines and their derivatives, which have both corrosion inhibition effect and bacterial growth inhibition, will become more important.
The selection of amine in metalworking fluid usually considers two aspects: Environmental protection and safety: The toxicity of the product and its impact on the health of the operator; Fog and volatility, impact on the environment; Registration problem. Performance: Alkali retention; Stability; Corrosion inhibition (ferrous and non-ferrous metals); Tool life (lubrication, cobalt precipitation); Concentrate stability.
Typical physicochemical data of diethylene glycol amine (DGA): As a special amine, diethylene glycol amine (DGA) has irreplaceable advantages in metalworking fluid additives due to its outstanding performance in environmental protection and performance. Appearance: clear liquid, basically free of suspended solids Chroma (Pt Co): 35 Max pH：12 Flash point: 124 ℃ Recommended dosage: 1-10%
Characteristics of diethylene glycol amine (DGA) applied to metalworking fluid: Low volatility, helping to improve the plant operating environment;
High flash point, high boiling point, low freezing point, low viscosity, improved operability;
High alkali storage capacity and PH stability;
The precipitation of cobalt metal is far lower than other amines, which can prolong the service life of the tool;
The precipitation of copper is much lower than that of other amines;
It has good corrosion protection to ferrous metals and low corrosion to aluminum and its alloys;
It has very low toxicity and is not easy to mutate. The nitrite produced by long-term exposure to the air is very low and will not cause allergy to human skin;
Good biodegradability, low bioaccumulation and high biological stability; Good adaptability to hard water.
