| 摘要 |
FIELD: manufacture of abrasive tools and fittings for them. ^ SUBSTANCE: method of making industrial lot of super-finishing blocks of micro-powders by slip casting comprises steps of preparing slip, pouring it to molds, dehydrating, extracting blank out of molds, souring, drying, performing high-temperature firing and testing rigidity of blank. Values of real shrinkage of blank sides are determined with use of reference test-sampler. Molds whose inner size and height of pouring slip into them are determined while taking into account said shrinkage values if it is necessary to make industrial lot of super-finishing blocks. In order to make test sampler, mold whose inner size and height of poured slip are determined by summing lateral dimensions of ready super-finishing block and values of expected shrinkage for time period from dehydrating slip until firing test sampler. Real shrinkage values are determined by subtracting from inner lateral dimensions of mold of test-sampler and height of slip poured to it, real respective lateral dimensions of test-sampler measured after firing it. Inner size of molds and height of slip poured to them at making industrial lot of super-finishing blocks are calculated by summing lateral dimensions of ready block and values of real shrinkage of respective sides of test-sampler. In order to make blocks with allowances for mechanical working, dimensions of ready block, values of real shrinkage of respective sides of test sampler and values of allowances for mechanical working are summed. Protrusion on end of blanks formed because of concrete construction of used mold is removed by cutting it by means of knife at souring blanks or it is removed at mechanically working fired blank. In order to perform the method, special construction (given in description of invention) of mold is used. ^ EFFECT: reduced consumption of abrasive materials, electric energy, shortened time period for working blanks. ^ 3 cl, 1 tbl, 1 dwg |
