high temperature dry tunnel rolls by Qingdao Hexin Machinery Co.,Ltd.
high temperature dry tunnel rolls Furnace bottom roll plays the role of a rotating to convey plate, my company produces furnace bottom with 300-400 - mm diameter, roll with the centrifugal casting, precise casting technology on journal bell mouth, shaft head with forging process. Thick plate heat treatment furnace roll are usually used for n ormalizing furnace and hardening furnace, under the hydrogen nitrogen protective environment, Furnace temperature is about 900 ℃ ， to complete heat treatment process by transporting lenient plate with even rapid, the diameter of roller is 300-400mm,centrifugal casting for roll body, precision casting for journal and end bell, forging for shaft head. Common used material is: ZG40Cr25Ni20Si2 、 ZG14Ni32Cr20Nb 、 ZG45Ni48Cr28W5Si2.