Cast iron plate production standards of the original resin sand flat sophisticated enterprise champion flat

Cast iron plate production processes are generally strictly a "People's Republic of China Machinery Industry Standard" JB / T 7974-2000 processing and production. But sometimes even local conditions, to be flexible in design. In the national standard and enterprise standards and the use of cast iron flat iron plate iron plate requirements differ, they can be specially designed according to the actual needs of the cast iron plate. Cast iron plate national standards, national standard cast iron plate, GB / T22095-2008 describes the cast iron platform, cast iron plate definitions of terms, dimensions, face flatness error, the stiffness and deformation of the selection and cast iron platform, cast iron plate of the materials used and other relevant regulations. Cast iron plate national standards, national standard cast iron plate, GB / T22095-2008 replace GB / T7974-1999. The so-called "scraping" is a combination of two processes of scraping and polishing. That plane scraping - milling display, and then flat scraper - regrind display, and so forth, alternating cycle, continuous operations. Cast iron plate so that the surface roughness and shape gradually reduce errors; precision contacts, gradually increase the geometric accuracy in operation, until the meet the requirements. Cast iron plate coloring method available test parts flatness, with accurate, intuitive and convenient advantages. Push on through scraping of cast iron table base plate, the workpiece is relatively smooth, no astringent feeling, to facilitate the measurements, which ensures measurement accuracy.