Cone crusher liners include cone crusher mantle and concave. The heat treatment is the most important step in casting cone crusher liners. How to control heat treatment?
The advanced and convenient heat treatment tooling equipment is used, and the castings should be placed with the mouth facing down. The crushing wall and rolling wall castings are thick and complicated. The material is an austenitic manganese steel with a strengthening element. Therefore, the heating temperature should be lowered at a temperature of 150 ° C for 1 hour, and then increased to 60 to 100 ° C / h. Keep at 650 ℃ for 2 ~ 3h. After heating with the furnace to 1080 ～ 1100 ℃, the heat preservation is generally 4 ~ 5h (the heat preservation is 1h for every 25mm thickness of the casting, and then it is increased by 1h).
The water temperature is controlled at 20 ～ 30 ℃. The cone crusher liners castings should be filled with water within 45s. After entering the water, it should swing up and down, left and right, and break through the steam film to improve the cooling effect.
The heat treatment of the cone crusher liners adopts a circular bell-type trolley electric furnace, which is sealed, environmentally friendly, and has good energy-saving effects. The decarburization of the casting is less, which is convenient to use.