(1) Due to the high grinding temperature of the superalloy, sufficient cooling liquid should be supplied during grinding to take away more cutting heat and flush the surface of the workpiece and the grinding wheel to obtain better surface quality and grinding precision.
(2) In order to reduce the residual stress and deformation of the workpiece to the surface to be machined, after the grinding allowance is less than 0.15mm, the grinding wheel should be sharpened and the grinding depth should be appropriately reduced to prevent the grinding wheel from being clogged.
(3) Grinding of high-temperature alloys is very important to correct the grinding wheel in time. The grinding wheel is well-trimmed, which can achieve good results in the grinding of the workpiece, and can improve the durability of the grinding wheel and reduce the production cost. Generally, a deeper dressing amount and a larger longitudinal feed amount, that is, a deeper cutter dressing method are used. The depth during dressing is (0·07 to 0.1) mm/st, and the longitudinal feed rate of the table is (1.1 to 1.5) m/min. The coolant in the trimming must be poured on the diamond, and the flow rate should be greater than (40~50) L/min.
(4) Water-based coolant cannot be used when grinding with a cubic boron nitride grinding wheel. Because of the different chemical properties of the abrasive and other abrasives, at a high temperature above 1000 °C, the cubic boron nitride reacts with water to decompose into boric acid, which will aggravate the wear of the grinding wheel. It is better to use mineral oil as the grinding fluid. The water-soluble oil is used as the grinding fluid, which can increase the grinding ratio by 50 times than the rust-proof water. The grinding ratio of the sulfate mineral oil is 80 times that of the water-soluble oil.
(5) When using the deep grinding method and the cutting method, attention should be paid to the possible bending deformation or elliptical phenomenon of the T piece.
