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在生产实践中,非磁性材料(非铁磁金属,玻璃、陶瓷、塑料等)的零件,在平面磨床上加工之前,通常将零件粘贴在钢制板或框架上,然后将它安装在机床的磁性工作台上。这种固紧方法的缺点是在粘贴和磨削完从框架上取下零件的过程中所花费的劳动量大,需要仔细清洗去胶,并且常常不能保证牢靠的固紧。由于胶层厚度不能精确控制,因而这种固紧方法在磨削时不能保证高精度。用粘贴法固紧在加工半导体仪表零件时尤其不适宜,因为所需加工的硅、锗以及其他半导体材料的片料对极微小的脏物都很敏感,从而需要多次清洗去胶。电致冷技术的发展使之能设计出采用将蒸馏水或其他容易冻结的液体冷冻的方法来固紧零件的专用致冷器,这种方法完全不会使被加工的零件弄脏,并且能保证其固紧更可靠。在接通电流以后,经过1～2分钟,便可取下被加工的零件。冷冻法能磨削出高精度的零件,
In production practice, parts of nonmagnetic materials (non-ferromagnetic metals, glass, ceramics, plastics, etc.) are usually affixed to a steel plate or frame prior to machining on a surface grinder and then mounted on a machine tool Magnetic workbench. The disadvantage of this fastening method is that it takes a great deal of labor to remove and remove parts from the frame after pasting and grinding, requires careful cleaning and degreasing, and often does not guarantee solid fastening. Due to the fact that the thickness of the adhesive layer can not be precisely controlled, this fastening method can not guarantee high precision when grinding. Fastening with the paste method is particularly unsuitable for the processing of semiconductor instrumentation components because the required processing of silicon, germanium and other semiconductor materials are very sensitive to very small dirt, which requires multiple cleaning to glue. The development of electrochromic technology has enabled the design of dedicated chillers that use the method of freezing distilled water or other easily-frozen liquid to fasten the parts without any contamination of the parts being processed, Its fastening more reliable. After the current is switched on, after 1 to 2 minutes, the machined parts can be removed. Freezing method can grind high-precision parts,