The working surface of the T -shaped groove platform must not have defects such as sand holes, stomachs, cracks, scratches, scratches, bumps, and rust points that are seriously affected and used.
T -shaped slot platform technical requirements
T -shaped slot platform technical requirements
① The working surface of the T -shaped groove platform must not have defects such as sand holes, pores, cracks, scratches, scratches, bumps, and rust points that seriously affect the appearance and use.
② The surface of the T -shaped slot platform should be cleared and flat, and the paint is firm.
③ On the working surface of the T-shaped groove platform with a accuracy level 0-3, the sand holes with a diameter of less than 15mm are allowed to be blocked with the same material, and its hardness should be less than the hardness of the surrounding materials.There should be less than 4 sand holes in the working surface, and the distance between the sand holes should not be less than 80mm.
④ The T-shaped slot platform should be manufactured with high-quality and fine gray-inlet cast iron or alloys, and its working face hardness should reach 170-220HB.
⑤ The working surface of the T -shaped slot platform should usually be scraped.The maximum allowable value of the surface roughness RA to the 3 -level T -type T -shaped tank platform working surface with scraping processing is 5um.
⑥ The scraping process should be used for coloring and inspection.See the regulations in Table 3 for the ratio of the contact point displayed after research: or see the regulations in Table 3 according to the number of contact points in the & 25mm square area of ??25mm × 25mm, and the number of contact points in any 25mm × 25mm should be no more than 5 points.

Related tags： Machinery