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What is the material of the hearth roll used in the heat treatment furnace for the production of stainless steel?

At present, with the increasing demand for stainless steel in major industries, the production enterprises are of course increasing year by year. Then we all know that some heat treatment furnaces are used in the production of stainless steel, and the demand for furnace rolls (heart rolls) used in these heat treatment furnaces has gradually increased.
Since the temperature in the heat treatment furnace is often very high, generally as high as about 1100 °C, the furnace bottom rollers usually used need high temperature resistance, wear resistance, impact resistance, etc., so they are generally made of high-quality heat-resistant stainless steel. . This is the material selection of furnace rollers. Of course, due to different technologies, manufacturers will have different materials selection. Users can also choose according to their own needs.