Application of sodium hexametaphosphate in water-soluble synthetic metal grinding fluid

 With the continuous development and progress of industrial technology and the continuous emergence of new materials and new processes, the requirements for the working fluid that is consumed in the metal processing process, namely the metal working fluid, are becoming more and more precise and demanding. Choosing suitable metalworking fluids in precision and ultra-precision machining is essential for ensuring product processing quality, improving processing efficiency and reducing environmental pollution. Phosphate series sodium hexametaphosphate has anti-rust and corrosion inhibition effects, and plays an important role in the application of metal grinding fluids.


Following Chuandong Chemical, the manufacturer of sodium hexametaphosphate, to see the composition of metal grinding fluid:

The metal grinding fluid is composed of the following components: 5-40% by weight of rust inhibitor; 1-20% by weight of cleaning agent; 0.1-10% by weight of lubricating corrosion inhibitor; 1-20% by weight of penetrant; 1-20 wt% solubilizer; 10-40 wt% pH regulator; 0.5-5 wt% defoamer, balance water; based on the total weight of the water-soluble fully synthetic metal grinding fluid. Wherein, the pH value of the water-soluble fully synthetic metal grinding fluid is 7-11. Among them, the lubricating corrosion inhibitor is a long-chain nitrogen-containing heterocyclic organic ester. The water-soluble fully synthetic metal grinding fluid has excellent lubrication, anti-rust, cleaning and cooling properties, and can be widely used in the grinding of ferrous and non-ferrous metals.


Grinding is a machining method that uses a grinding wheel to rotate at a high speed to cut a workpiece. A large amount of deformation and the formation of a large number of new friction surfaces during processing require the grinding fluid to have excellent lubrication, cooling, cleaning, rust prevention and defoaming characteristics. To extend the durability of the grinding wheel, improve the processing accuracy and surface roughness of the workpiece, improve the processing efficiency and product quality, and reduce energy consumption.


However, adding a small amount of sodium hexametaphosphate in a corrosive environment can greatly reduce the corrosion rate of metals. This substance is called corrosion inhibitor, also called corrosion inhibitor. The definition of industrial grade sodium hexametaphosphate in metal corrosion inhibitors has three meanings: 1. Slow down the corrosion of metal materials. 2. Maintain the physical and mechanical properties of the metal. 3. The usage amount is trace or small amount.


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