Failure of grate failure

In the production of grate material, some enterprises use alloy steel, some use ductile casting Iron, some use cold hard cast iron and high chromium cast iron. Process method from clay sand casting,Vanishing die casting to coated sand casting process is diverse. But from the development trend in recent years Look, gradually tend to disappear die and coated sand casting process production, material with high chromium cast iron as Main, the product quality has been improved, and the service life is about one year. Grate bar under a certain static pressure, to withstand the room temperature to about 1000℃ .Periodic hot baking, at the same time to withstand oxygen, sulfur and other corrosive high temperature air flow impact, resulting in The surface of the grate strip gradually oxidation, melting and deformation, growth and even cracking, high temperature strength Figure 1 Operation process of sintering equipment When insufficient, deformation and fracture occur, resulting in leakage or collapse of sintering machine, which seriously affects the positive Often produce. The service life of the market grate bar is mostly about one year. To effectively reduce the cost, reduce the cost With less downtime, select the grate strip with strong antioxidant capacity and corrosion resistance.