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Shotcrete steel liners must be inspected once a week. If deep scratches (more than 1mm in depth) occur, they should be reground. The edge of the round hole of the steel liner should be inspected frequently. It must maintain a sharp edge. If the edge is beveled, the fine particles can easily penetrate into the joint surface and increase the wear. If a new rubber plate is replaced and the old steel backing plate material has beveled edges, the service life of the new rubber plate will be significantly shortened.
The pressing force exerted by the press machine pressing mechanism on the rubber plate is not uniform across the entire plate surface, and is largest between the discharge port and the remaining gas port, and the maximum pressure point continuously drifts back and forth with the rotation of the rotor. The difference in pressure can be solved by the clamping system, so that the air leakage at the joint surface during the operation of the sprayer is extremely slight. The correct clamping of the sprayer during use has an important influence on the wear and tear costs. If the clamping is improper, the pressure will escape from the interface between the two plates and carry out fine particles, which will generate dust next to the machine. This fine sand bursts and erodes the rubber plate, causing it to fail in a short time. The rubber plate is not allowed to have excessive stress due to excessive clamping, otherwise it will be excessively worn due to friction and heat, the heat resistance limit of the rubber plate is 110°C, and it is normal that the rubber plate does not exceed 80°C in use.
Each class should clean the rubber screen of the sprayer and check the wear. If the rubber plate has been worn to the extent that the steel insert is flush with the surface of the rubber or there is gas leakage from the excess air hole and the feed hole, the rubber plate must be replaced. . Because at this time, the rotating lining plate will directly contact the steel ribs so that the sealing plate can not be fully pre-tightened to obtain an effective seal, thereby losing its airtightness.
Spraying machine steel liner and rubber sheet how to maintain?
Spraying machine steel liner and rubber sheet how to maintain? Shotcreting machine steel liners and rubber sheets are the key components of the shotcreting machine. Be sure to pay attention to their maintenance so as to ensure that no faults occur in the work.