All kinds of casting requirements of sand selection

Precision castings all kinds of casting precision casting method to obtain different, initial investment and productivity is also inconsistent, resulting economic benefits are also differences. Therefore, to do more, fast, good, province, consideration shall be given to all aspects of. Deal with selected casting method carries on the preliminary cost estimation, to determine high economic benefit but also can ensure the casting requirements of the casting method.

Heavy casting single piece and small batch production, manual modelling is still important method, the manual model can adapt to various complex requirements are flexible, does not require a lot of technology and equipment. Get the steel, iron and most non-ferrous alloy castings are available sand casting method. In order to advance the surface quality of castings, often in sand mold and cores brush a layer of paint. Can be used water glass sand, water glass sand, VRH method of organic ester water glass self hardening sand, clay, dry type self hardening resin sand and cement sand; for heavy casting a single production, using pit molding method of low cost, fast operation.

Investment casting process is complicated, and not easy to control, use and consumption of material is expensive, so it is suitable for production of complex shape, high precision, or difficult to other processing of small parts, such as turbine engine blade. Finalize the design product batch production or long-term production of the box modelling, split box modeling method is more appropriate, although the mold, sand box to start investing in high, but can from save the form of working hours, improve product quality to get compensation.