Suppress moudle, will use the cavity surface finish high pressure type, as a result, the casting surface finish.In addition, the shell consists of high temperature resistant special mixture of the binder and refractory refractory coating coated on the casting and made, direct contact with molten metal inside the cavity of high surface finish.So, the surface finish of investment castings is higher than the general casting, general can reach Ra. 1.6 ~ 3.2 microns.Investment casting method is another advantage is that it can cast all kinds of alloy of complicated casting, special casting high temperature alloy castings.Such as jet engine blades, its streamlined profile and cooling with lumen, hardly formed by machining process.Qingdao hexing using investment casting process can not only achieve batch production, ensure the consistency of the castings, but also avoid the residual knife lines of stress concentration after machining.
Casting machinery industry and set up the completed "car casting blank elaboration efficient modelling and clean up the complete set of technology and equipment", "block efficient continuous line of development and research the shotblast cleaning" is a great success, in 1999 completed the national research high levels of air impact molding line project success.