core forming of the inner cavity of the stainless steel manhole

Today we will talk about the core forming of the inner cavity of the stainless steel manhole. The inner cavity of the stainless steel manhole is formed by the core, which is made of sand and binder. It has sufficient hardness and strength. Putting the core into the mold can form the inner cavity of the stopper that cannot be formed by the model itself. In order to make cores with precise dimensions, the core box must be provided by the mold factory. The core box is filled with specially prepared core sand and solidified like a decorative mold. The core can be hardened in the core box or can be It is taken out from the core box and hardened, the core is placed in the lower box, and then the upper box is closed on the lower box. After closing the box, the casting mold is formed, and molten steel can be injected into it. Before casting the stainless steel manhole, the steel must be made first, and then the molten steel must be poured from the steel-making furnace into the ladle, and then poured into the casting mold, so that it solidifies in the cavity created by the sand mold and the core.