High Strength Steel Castings

A: Good liquidity. The core made of it has clear outline and dense structure, and can produce more complex sand cores, such as cylinder water jacket core and cylinder cover.
With the strength properties suitable for the real thing, can be made into high-strength shell core coated sand, can also be made into medium strength hot core box coated sand, can also be made into relatively low strength non-woven sand. Ferroalloy coated sand.
The use of coated sand can cast a good surface quality sand core. With little or no coating, better surface quality of steel castings can be obtained, the surface roughness can reach Ra=6.3~12.5um, and the dimensional accuracy can reach CT7~CT9.
Coated sand has more advantages, fewer casting defects.
Good collapse, castings easier to clean.
The sand core has strong hygroscopic resistance and long existence time, which is more conducive to storage, transportation and use.

A: When HR produce mining machinery accessories, HR will use both MT and UT inspection prices.