Advantages of Coated Sand Casting Pearl Sand Shell Mold to Produce Steel Castings
Advantages of Coated Sand Casting Pearl Sand Shell Mold to Produce Steel Castings
film sand casting has a long history in the field of casting, orb sand the output of castings is also quite large; Orb sand scope of application: coated sand can be the mold can also be made into sand core and coated sand. Or core can be it can be used in conjunction with other sand molds (cores); It can be used not only for metal gravity casting or low pressure casting, but also iron type sand-clad casting, It can also be used for thermal centrifugal casting; It can be used not only in the production of cast iron and non-ferroalloy castings, but also in the production of steel castings.
Adopt precision casting coated orb sand shell process replaces investment casting to produce steel castings. From the perspective of precision casting development, it is a trend. Compared with investment casting process, it has greater advantages, which are mainly reflected in the following aspects:
(1) The production cycle is shortened by half, the labor intensity is reduced by 40%, and the efficiency is improved by 30%;
(2) Film sand the materials are recycled after pouring, dewaxing, wax treatment and roasting processes are canceled, acid water and acid mist discharge are eliminated, and pollutant discharge is reduced by 80%;
(3) The deformation of the casting is small, the correction efficiency is increased by 50%, and the application of cold iron is added at the same time, the process yield is increased by nearly 10%;
(4) Compared with the investment casting process, the comprehensive cost per ton of castings can be reduced by 1,000~1,500 yuan.
Finish casting film sand the shell process is used to produce steel castings, although the advantages are obvious, but there are also short boards, too complex product structure, due to the large number of sand cores, resulting in a large amount of fly-edge grinding, while coating. Sand there is still some peculiar smell after pouring, so the lower mold technology is improved and the film is odorless. Sand R & D will be the key direction.
