Total synthesis water-base cutting fluid for sintering neodymium-iron-boron and preparation method thereof

Abstract

The invention relates to a full synthetic water-based cutting fluid for sintering NdFeB. The invention is made of raw materials with the following weight percentage: monocarboxylic acid or dicarboxylic acid of 2 to 9 percent; at least one of triethanolamine or diethanolamine of 2 to 20 percent; water-soluble thiophosphate of 0.1 to 2 percent; water-soluble rare earth complex of 0.1 to 2 percent; at least one of polyethylene glycol, polyvinyl alcohol and polypropylene glycol with the molecular weight of 200 to 600 of 2 to 20 percent; pH stabilizer of 0.01 to 0.1 percent; hard water resistant agent of 0.01 to 0.1 percent; water is the remaining. The preparation method is that: a. the required raw materials are added according to the raw material compositions; b. the mixture is heated, stirred and returned, the heating temperature is between 70 and 150 DEG C, the stirring speed is between 100 and 1000 r / min; c. after the reaction of 1 hour to 8 hours, the mixture is cooled to the room temperature. The cutting fluid has low cost as well as long lasting and antibacterial environmental protection, and has good cutting, cooling, lubricating and anti-rust functions to the NdFeB.

Description

technical field [0001] The invention relates to a water-based cutting fluid and a preparation method thereof, in particular to a fully synthetic water-based cutting fluid for sintered NdFeB and a preparation method thereof. Background technique [0002] Metal cutting fluid is an important supporting material for metal cutting. In metal cutting, the reasonable use of cutting fluid can reduce the friction between the tool and the workpiece, reduce the cutting temperature, reduce tool wear, improve cutting efficiency and processing quality, prolong the service life of the tool, and reduce processing costs. [0003] With the improvement of cutting technology, there are more and more types of cutting fluids. According to its type, it can be roughly divided into two categories: oil-based cutting fluid and water-based cutting fluid. Oil-based cutting fluids mostly use mineral oil, fatty oil, mixed oil and extreme pressure oil as raw materials, and generally have good lubricity, b...

AI Technical Summary

Problems solved by technology

NdFeB products are easy to oxidize and corrode due to their active chemical properties, gaps in powder metallurgy bodies, and galvanic battery reactions between different metals due to the rare earth elements contained in the product itself, and the general water-based cutting fluid is difficult to fully meet its processing requirements. Require

Judging from the existing patents, documents and technologies, the existing cutting fluids (including the various cutting fluids listed above) are mainly applicable to metal cutting and grinding of iron, aluminum, copper, etc. Water-based cutting fluid products for post-processing of iron and boron