The bimetal wear-resistant pipe is composed of an outer wall and an inner lining. The outer wall is a seamless steel pipe with a thickness of 6-20mm, and the inner lining is a high-chromium-nickel alloy with a thickness of 12-30mm. Casting, this product makes full use of the high pressure bearing capacity, good welding performance and high hardness of high chromium-nickel alloy (HRC30-50) of seamless steel pipe. It is an ideal wear-resistant conveying pipeline. KMTBCr28 bimetal wear-resistant elbow has increasingly become a more reliable anti-wear solution for material conveying systems in industries such as electric power, steel, chemical industry, and smelting because of its good wear resistance and reliable welding performance.
The outer steel body of the bimetal wear-resistant pipe is made according to the design requirements. The outer arc of the inner wall of the steel needs to be welded and attached to the wear-resistant layer, so that the wear-resistant layer can be firmly attached to the inner wall of the pipe.
Features
1. Wear resistance: hardness HRC>35, with good wear resistance and thermal stability.
2. Impact resistance The joint surface of the two metals is completely metallurgical, and the thermal expansion coefficients of the two are equivalent, and there will be no expansion and contraction cracking.
3. Heat resistance and corrosion resistance: in wet state, under the action of corrosive medium and particle scouring, it is more suitable to use the hardness alloy used in the as-cast state;
4. The product has good compactness, uniform thickness and stable quality.
technical parameter
Model Φ76-900
Material grade KMTBCr28 (customizable)
Customized according to the picture Straight pipe, elbow, elbow, tee, reducer, etc. can be customized.
Applicable industries
1. Electric power industry: raw coal system silo, hopper, funnel, powder feeding pipeline.
2. Coal industry: heavy ore coal preparation pipeline in coal preparation plant, wet coal conveying system, sediment backfill in mining.
3. Mining industry: mine filling, concentrate powder transportation, tailings transportation pipeline.
4. Iron and steel industry: coke particle conveying pipeline, coal mill pipeline, separator, elbow, cone, separation baffle.
5. Cement industry: coal powder transportation, mineral powder transportation.
6. Machinery industry: lining of power plant pulverizing, dust removal and ash discharge system equipment, lining of steel mill dust removal equipment.
In order to find a balance between high wear resistance, weldability and impact resistance, KMTBCr28 bimetal composite wear-resistant elbow came into being and has been widely used since the late 1990s. KMTBCr28 bimetallic composite elbow can not only ensure the requirements of pipeline toughness, weldability and strength (compression resistance), but also ensure sufficient wear resistance. It is an ideal solution for wear-resistant pipelines for material transportation.
KMTBCr28 material characteristics Among alloy materials, the most ideal hardness and wear resistance are high chromium wear-resistant white cast iron and high-quality alloy wear-resistant cast steel (collectively referred to as superhard wear-resistant alloys). The hard phase of high chromium cast iron KMTBCr28 is M7C3 carbide, and its hardness reaches HV1500-1800, so it has good wear resistance, and because the structure of this Ka-type carbide is rod-shaped, it has a high wear resistance. toughness. And on the basis of traditional ingredients, rare metals and boron carbide hardening agents are added, which greatly increases the hardness and fatigue resistance of traditional products, making its wear resistance better than other products.
KMTBCr28 bimetal wear-resistant elbow scope of application:
- Electric power industry: Raw coal system silos, hoppers, funnels, powder feeding pipelines.
- Coal industry: Heavy ore coal preparation pipelines in coal preparation plants, wet coal conveying systems, and sand backfilling in mining.
- Mining industry: mine filling, concentrate powder transportation, tailings transportation pipeline. the
- Iron and steel industry: coke particle conveying pipeline, coal mill pipeline, separator, elbow, cone, separation baffle. the
- Cement industry: coal powder transportation, ore powder transportation. the
- Machinery industry: lining of equipment for milling, dust removal and ash discharge systems in power plants, and lining of dust removal equipment in steel mills.
Performance characteristics of KMTBCr28 bimetal wear-resistant elbow:
- Good wear resistance
The hardness of the super-hard wear-resistant alloy is HRC≥56, which has good wear resistance and thermal stability. the - Excellent impact resistance, metal bonding performance, thermal shock resistance
KMTBCr28 bimetal composite wear-resistant elbow, the joint surface of the two metals is completely metallurgical, safe and reliable to use. The thermal expansion coefficients of the two are equivalent, and there will be no expansion, contraction and cracking. The outer wall of the elbow is made of steel pipe, and the inner lining is made of super-hard wear-resistant alloy. This product not only has the wear-resistant and corrosion-resistant properties of high-alloy products, but also has high mechanical properties and high impact resistance. the - Good heat resistance and corrosion resistance
The matrix of superhard alloy materials has strong heat resistance and corrosion resistance, and can show good corrosion resistance and wear resistance in high temperature or corrosive environments. In the wet state, under the interaction of corrosive media and particle erosion, it is more appropriate to use superhard wear-resistant alloys in the as-cast state; while in dry conditions where abrasive wear is the main failure mode, it is more appropriate to use a A superhard and wear-resistant alloy material that can obtain a martensitic matrix through heat treatment. the - Low composite cost and good quality
The wear-resistant elbow is manufactured by the international advanced lost foam casting process, with high yield, good compactness, uniform thickness and stable quality. - Easy to transport, install and use.
The bimetal composite wear-resistant pipe can be connected by flanges, quick joints, direct welding, etc. Moreover, due to the high impact resistance of the composite pipe, when a local blockage occurs during the maintenance of the pipeline system, it can be knocked and hammered at will, and can also be cut, removed, and welded at will. The installation and maintenance are very convenient.