How to replace lining board of cone crusher
Before casting the zinc alloy, the gap should be blocked tightly with clay or asbestos to prevent the outflow of zinc alloy. When pouring, the alloy is not allowed to damp on the surface of the alloy contact, otherwise it will cause explosion. Therefore, to conduct, in order to shorten the time of preheating or drying before casting (without preheating), used in contact with the surface coated with a layer of oil solution, and then casting using special tools; after casting, the lining plate and tighten the fastening bolts again.
After installing the lining board, to check their center is correct; if the center is wrong, in operation will produce collision, uneven product size, and even cause friction, heat and other parts of the machine. When the thickness of the moving cone and the taper liner reach 65-80% or local wear, the depression deformation and rupture, they should be replaced.
When the liner liner thickness wear 2/3 cone crusher, grinding, leakage or rupture, or the port of discharge increases to cannot be adjusted, will need to replace the lining board, according to the wear and tear of different scope: 1 decided to replace the broken cone liner and rack and replace all the only replace the rack or broken; one of them all cone liner; the only replace the rack, crushing cone lower liner; the lower frame or simply replacing one of the crushing cone liner; the only partial replacement. Replace the frame lining board, such as the old lining not get down, the available gas welding cutting, and a clean surface.
The new concrete on the back of the lining is made of cement No. 500~600 and sand, and the ratio is l:3 by weight. Before casting, the lining shall be polished so that the concrete can be firmly joined to it. After the concrete has been cast, it must be trimmed so that the ribs on the back of the lining plate are close to the frame and must be put into use until the concrete is fully preserved and dried. Otherwise, the service life will be affected.
Replace the broken cone lining board: when the lower part of the cone lining board is installed, the adjusting ring of the lower part of the cone is used to keep the clearance between l.0 and 2.0mm between the lower lining plate and the cone. The top lining shall be fitted with a pressed nut and then cast zinc alloy. Before casting, the cone and the lining plate are preheated 60~80 DEG C first, and the joints of the lining board shall be filled with asbestos and clay so as to avoid leakage of the zinc alloy. After the lining plate is finished with the alloy, the compression nut and the locking plate are installed to make it tightly fixed.
