Improve the accuracy of the cast iron plate 100 × 100

Improve the technical accuracy of the cast iron plate iron plate requirements such as: 1, casting surface of the plate should be clear and smooth sand, paint firm. 2, precision grade 0 flat work surface - level 3, the hole diameter of less than 15mm of sand allows the same material clogging hardness less than the hardness of the surrounding material. Face clogged sand hole should be limited to four, and the distance between the holes of sand should not be less than 80mm. 3, the plate should be used to create high-quality fine gray cast iron and other materials, its face hardness should be 170 ~ 220HB. 4, flat working surface usually scraping process. Scraping for use of three flat working surface, the surface roughness Ra maximum allowable value 5μm. 5, the plate should demagnetization and stability of the treatment. Accuracy: Accuracy class Accuracy class size specification 0 1 2 3 0 1 fine plane two three fine plane 100 × 100 4 8 26 2500 × 2500 72 180 270 200 × 100 5 10 20 3000 × 1000 168 248 200 × 200 5 10 20 3000 × 1500 174 154 300 × 200 6 12 24 3000 × 2000 184 275 400 × 400 6 12 24 4000 × 1000 210 300 1500 × 1000 24 48 120 6000 × 2500 300 450 2000 × 2000 60 152 230 8000 × 2500 375 530 2500 × 1500 64 152 230 8000 × 3000 382 570 2500 × 2000 68 168 248 modeling core making is one of the key steps in the process of forming flat cast, the quality of its castings, manufacturing costs, production efficiency various aspects of labor intensity and environmental pollution has a very important impact. 1, clay sand wet sand molding process many years of production Practice shows that injection pressure low cost, low pollution, high efficiency, and good quality, and air impact modeling and static modeling, and other highly mechanized, automated, high-density molding process humidity , will become the important small-scale production of castings in the future development trend of China. 2, resin sand molding core making process through the development of non-polluting or less adhered economic, catalyst, research accompanying environmental treatment equipment, a wide range of application and development of resin-bonded sand, cold-box-bake process, warm box process and shell (core) method. Product cast iron plate resin molding process pan, cast iron square box, curved panels. 3, water glass sand molding core making technology of purifying water glass and modified to improve its bonding properties, the development of new water glass sand sand reclamation and reuse technology and equipment, to further promote the ester cured water glass sand in large cast iron plate productivity applications. 4, casting coating to expand and strengthen the transfer coating, surface alloy application and mechanism of the coating. Cast iron plate in the continuous advancement of technology, casting methods are constantly improved.