Production process of bimetal composite wear-resistant products
2020 04/20
First, the composite process bimetal composite wear-resistant tube adopts the lost foam vacuum suction casting composite process for re-inspection manufacturing.This process is an internationally advanced metal composite process and belongs to the semi-precision casting technology.Compared with sand casting, the surface accuracy is greatly improved. And there will be no sand flushing and sand inclusion. Due to the vacuum casting, there will be no defects such as blowholes. Due to the high dimensional accuracy of the mold making process, the thickness of the composite wear-resistant layer of the composite wear-resistant pipe cast is uniform , Avoiding the phenomenon of uneven wall thickness caused by the general casting method due to demolding, repairing and other processes, and its uniform organization and stable performance. At the same time, the process can compound any size diameter straight pipe and special-shaped pipe, and bend Tubes, tees, tees, conical tubes, variable diameter tubes, non-equal-thickness tubes, eccentric tubes can be integrated as a whole, which reduces the resistance to movement and reduces the operating cost of material transportation. Based on the introduction of advanced formulas from the United States, our company has determined the wear-resistant steel as the inner wall of the bimetallic composite wear-resistant pipe after research and repeated tests by relevant experts. The most reasonable experience was obtained in the second test, which made the product more mature, more stable in quality, and better in overall performance. A certain amount of rare earth elements were added to improve the quality of the steel alloy, play a role in grain refinement, and form a protective film on the surface ; Adding a certain amount of Mo makes the alloy have a certain anti-oxidation effect at high temperature and increase the service life; adding a certain amount of boron carbide can control the hardness between the range of HRC45 ~ 65, while solving the hardness and wear-resistant steel The contradiction between weldability, high wear resistance, etc. Bimetal composite wear-resistant products Scope of application: power industry: raw coal system silo, hopper, hopper, powder feeding pipeline, coal industry: coal preparation plant Heavy ore coal preparation pipeline, wet coal transportation system, sediment backfilling in mining industry: mine filling, concentrate powder transportation, tailings transportation pipeline steel industry: coke pellet transportation pipeline, coal mill pipeline, separator, Elbow, cone, separation baffle cement industry: coal powder transportation. Mineral powder transportation machinery industry: power plant powdering, dust removal, ash discharge system equipment lining, steel plant dust removal equipment lining.