机械类外文文献翻译中英文翻译抛丸清理机对板材轧辊进行抛丸处理.docVIP

外文翻译原文 SHOT BLASTING MACHINES FOR THE BLASTING OF SHEET MILL ROLLS V. I. Meleshko, A. P. Kachailov, V. G. Boikov, V. L. Mazur, T. P, Kobka and I. I. Krivolapov At the present time~ much attention is being devoted to increasing the quality of rolled products, partieularly sheet. To a significant degree this depends upon the preparation of the roll surface. Many plants are engaged in improving the quality of working the roll surface in preparing them for rolling.This article was written by personnel from Zaporozhstal Plant, Magnetogorsk Metallurgical Combine, the Institute for Ferrous Metallurgy, Dnepropetrovsk, and Magnetogorsk Mining and Metallurgical Institute on this very real problem.. The surface microrelief, or roughness, of cold rolled constructional sheet has an influence on the mechanical and production properties of metal, and also on the finish quality of parts made from this sheet. The final surface microrelief of thin sheet steel is formed in a skin pass on work roils which have been given a rough finish with metal shot. Normally the rough surface finish on the work rolls of skin pass stands is produced in pneumatic and rotor shot blasting machines. Experience in their use has shownthat the pneumatic machines used in the countrys steel plants do not fill the need for high quality blasting of roll surfaces. In 1969 the Institute for Ferrous Metallurgy, Dnepropetrovsk, did work on the SM-2 shot blasting machine in No. 1 Cold Roiling Mill of Zaprozhstal Plant, which revealed a number of shortcomings in its construction. To provide sheet with the surface roughness required by the specifications of Volga Automobile Plant (R a =0.8-1.6 g),the basic requirements for the design of shot blasting machines were determined, The machine must provide: 1. a constant shot size during operation, in other words, effective removal of shot of the specified size from worn shot; 2. the possibility of controlling air pressure in the collector of the shot blast machine during s