Study on grinding deformation of Al2O3-TiC slender bar
The deformation of brittle and hard material slender bar has great significance in contour grinding process. In this paper, the grinding deformation for Al2O3-TiC slender bar was studied. Diamond lapping film and adhesive mounting method were applied in the experiments. The influences of grinding pressure, grinding speed and stress on deformation were discussed in detail based on the theoretical analysis and the measurement of straightness in different conditions. The bend deformation goes up with the increase of grinding pressure and speed. The internal stress will bring large deformation after grinding. Releasing the stress will improve the deformation. Experiments shown that releasing the stress two-thirds at a proper condition before final grinding can achieve the deformation below 1000nm. Employing lapping film and adhesive mounting method in optimal condition, the Al2O3-TiC slender bar deformation in grinding can be controlled.
Warp in High Precision Cut-Off Grinding of Al2O3-TiC Ceramic Thin Plate
Abstract High precision cut-off grinding has been carried out on Al 2 O 3 -TiC ceramic thin plates with metal bond thin diamond wheels. The warp of the cut-part as well as the flatness of work surface, i.e. deflection of wheel, was precisely measured and thus, the warp generation mechanism was analyzed and the optimum slicing condition was investigated. Grinding forces were measured for discussing the warp. Also, the effect of V-shaped guide groove for depressing the deflection was studied. It is evident that the warp of workpiece and the wheel deflection largely depend on grinding type and pre-processing conditions. The high feed cut-off grinding is most effective for restraining the deflection, and the use of a V-shaped groove is a useful way to depress the deflection
Simulation Analysis of Local Heat Treatment Formability of an Aerospace Aluminum Alloy Frame Parts
Wang Zhijian1,a, Guo Fangyu1,b, Shang Xiaofeng1,c, Song Hongwu2,d, Wang Ling3,e and Wang Jiale1,f 1School of Mechatronics Engineering, Shenyang Aerospace University, Shenyang 110136, China 2Institute of Metal Research, Chinese Academy of Science, Shenyang 110016, China 3Shenyang aircraft industry company, Shenyang 110134, China aWangzhijian1974@sina.com, b1486121506@qq.com, c1009074102@qq.com dhwsong@imr.ac.cn, ew_ling2008@aliyun.com, f1591897439@qq.com