If Steel Profile Roller Shutter Door Machine adopts a new roll production process, starting from the source of material control, and further extending the service life of the roll through reasonable thermal processing methods, it will be beneficial to roll manufacturers and steel mills. The effect of cost reduction and efficiency increase.
The roll material of Steel Profile Roller Shutter Door Machine is expensive, frequent replacement not only reduces the production volume, but also a large part of the cost for the steel mill.
After a series of discussions, our company and the person in charge of special steel technology have reached a consensus on the issue of improving the quality of the rolls currently in service on the rolling line. The person in charge of Tiangang asked us to increase the overall life of the rolls by 2 through heat treatment without changing the material. To 4 times, the cost of roll production and use is reduced on the whole.
After the composite roller sleeve is forged, after flaw detection and rough machining, heat treatment is carried out. First, the surface of the roller sleeve is evenly sprayed with anti-oxidation medium, and the furnace is heated as a whole. It is quenched with an inorganic medium. After tempering, the hardness of the working surface is tested to HRC52- 55. The depth of the hardened layer on the working face of the roll is 80 mm, and the hardness of the inner surface of the roll sleeve is consistent with that of the roll shaft.
The compound roll is installed in the rolling mill for production. According to the records of the staff on duty, the grinding and reconditioning cycle of the compound roll has been increased from once every 2 days to once every 6-8 days. 3 times.