General rolling mill arch material for ordinary cast steel parts, due to the rolling mill working environment is harsh, in the process of work, it is inevitable that there will be a problem of rolling mill arch pressure loss corrosion, once there is a problem, for the normal work of the entire rolling mill will cause a certain impact, the quality of the product will also be affected.
Rolling mill arch pressure loss corrosion background introduction:
After years of operation, the 650mm rolling mill of an enterprise has suffered from different degrees of pressure loss, wear and corrosion problems, which seriously affects the normal work of the rolling mill. With the continuous impact corrosion wear, the bottom arch wound has been deformed and local cracks have appeared, making it difficult to continue to use. The size of the liner is 500×380, and the measured wear ranges from 8 to 15mm, and the archway surface has been seriously deformed and produced local cracks.
Rolling mill arch pressure loss corrosion repair process:
In the past, companies used on-site gasket plates to meet the installation size of the liners (skateboards/liners), but this did not slow down the wear of the rolling mill arch. The method of patch welding is to wear the damaged part to the original size after the welding repair has been welded, and then carry out large-scale welding on this basis. However, this method can easily cause the structure of the rolling mill arch to deform. The repair price of laser cladding is too high for many people to bear.
The use of Sole carbon nanopolymer material technology can be repaired on site, the time is short, the effect is good. Its product itself has a very high compressive strength, good impact resistance of the material, can absorb the impact of the fixed seat on the arch, to avoid the generation of wear; at the same time, the product has good corrosion resistance, can make the mating surface from the erosion of cooling water. Reduced downtime for businesses. There is also no stress deformation and no damage to the device itself.
Rolling mill arch pressure loss corrosion treatment process:
1. According to the size of the liner (skateboard/liner), the repair process is determined;
2. Surface baking oil treatment, and then use the angle mill to remove the loose oxide layer on the surface, and finally sandblast the surface of the archway;
3. It is recommended to replace the new liner (skateboard/liner) and clean the surface of the liner (skateboard/liner);
4. Prepare the corresponding bolts as top wires on the liner (skateboard/liner (skateboard/liner)) in advance;
5. Prepare the corresponding liner (skateboard/liner) installation tools and personnel, and the measuring tools and measuring personnel are in place;
6. The surface of the liner (skateboard/liner) and the surface of the bolt are brushed with the mold release agent in advance and dried for later;
7, according to the advance determination of the repair process to implement the repair: according to the site situation, the use of component correspondence repair method, first determine the positioning point of the repair datum, and then the reconciled Sore carbon nanopolymer material directly applied to the surface of the rolling mill arch, and then quickly install the liner (skateboard / liner), while tightening the liner (skateboard / liner), while measuring, while using the top wire for precision adjustment, and finally the material heating curing and then tighten the liner (skateboard / liner) fixing bolts again to complete the repair.
