Common materials for waste incineration grate bars include cast iron, manganese steel, gray cast iron or ferromanganese. Cast iron has good wear resistance and rigidity, and its cost is relatively low, so it is often used to make grate plates. After the cast iron grate plates are assembled, the necessary ventilation gaps will be maintained between the plates so that air can enter the fuel layer through the gaps to help the ash and slag after combustion to be discharged. Manganese steel, such as 45# manganese steel, has high hardness and wear resistance and is often used to make grate pins (grate shafts) that need to withstand high pressure. This material of grate pin can ensure that the grate plate maintains its shape and performance during long-term use. Gray cast iron or ferromanganese is also often used as the material of grate plates. They have a small thermal expansion coefficient and can withstand thermal expansion in high temperature environments, which is suitable for high-temperature combustion grate plates. In addition, although carbon steel has good strength, its wear resistance and temperature resistance are relatively poor, and it is easy to be damaged in high temperature and wear environments. Therefore, it is generally not recommended for grate plates of waste incinerators.
In summary, when selecting the material of the waste incineration grate bars, it is necessary to comprehensively consider factors such as wear resistance, rigidity, temperature resistance and cost to ensure that the grate can meet the needs of long-term stable operation.
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Waste incineration grate bars
Waste incineration grate bars
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