The cast iron platform is divided according to the material division, construction form and manufacturing method when dividing the type. If divided according to the manufacturing materials, it can be divided into wooden sand box, aluminum sand box, cast iron sand box, duct iron sand box and cast steel sand box. If it is divided according to the manufacturing method, it can be divided into a full-cast sand box, a welded sand box, and a fabricated sand box. It is divided into ordinary sand box and special sand box according to the structure. Http://
The cast iron quality and heat treatment quality of the cast iron platform have a great influence on the performance of the flat plate: or the working surface is deformed due to the residual internal stress ; or the precision cannot be maintained due to the inability to wear ; or the value is not small due to the difficulty of scraping. Roughness. Therefore, the use of cast iron platforms must pay attention to the choice of cast iron materials, using aging treatment and other methods to eliminate the residual stress of cast iron plates. The selection and design principles of the cast iron sand box should be designed and selected according to the following points: the inner wall of the sand box for the cast iron platform and the appearance of the appearance of the sand box should have enough sand consumption. The box belt does not hinder the placement of the riser and does not hinder. The casting shrinks and the wall of the box is provided with a venting hole to facilitate the drying of the mold and the exhaust in the casting.
The strength and rigidity of the sand box structure of the cast iron platform is very strong, and it is durable in the case of ensuring safe production. The cast iron platform reduces the cost of castings and is easy for users to use and manage. The box wall and the box belt structure are not only conducive to the attachment of the molding sand, but also to the correct positioning device for the falling sand and the casting of the cast iron platform sand box.
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