A wear-resistant and anti-corrosion surfacing welding material

Abstract

The invention discloses a wear-resistant and corrosion-resistant surfacing material. The wear-resistant and corrosion-resistant surfacing material for a flux-cored wire comprises a steel strip and powder; the wear-resistant and corrosion-resistant surfacing material for a welding electrode comprises a core wire and the powder; the powder is prepared from the following components by weight: 4-8 parts of marble, 0-15 parts of feldspar, 4-14 parts of rutile, 0-4 parts of titanium dioxide, 0-10 parts of fluorite, 0.5-5 parts of mid-carbon ferromanganese, 3-6 parts of atomized ferrosilicon, 42-55 parts of chromium metal, 7-12 parts of molybdenum powder, 12-18 parts of nickel powder, 5.5-8 parts of ferroniobium, 0-8 parts of iron powder, 1-2.5 parts of ferrotitanium, and 0.5-2 parts of rare earth; the thickness of the steel strip is 0.3-0.61 mm; the filling amount of the powder is 28-35 percent of the total amount; the core wire is made from any one of H08A, H0Cr24Ni13 and 0Cr18Ni9Ti; the weight part ratio of the core wire to the powder is (40-65) to (35-60).

Description

technical field [0001] The invention relates to a surfacing welding material, in particular to a wear-resistant and anti-corrosion surfacing welding material. Background technique [0002] In recent years, in the production process and practical application of products, the performance requirements of mechanical parts have become higher and higher. The products operate in high parameters (high temperature, high pressure, high speed) and harsh environments, which will inevitably affect the surface strength, wear resistance and corrosion resistance. Make higher demands. Some mechanical parts, metallurgical equipment, oil drilling equipment, internal mixer equipment in the chemical rubber industry, and railway turnout sliding bed often have surface damage and failure first during use, and the main reason for failure is surface wear, accompanied by acid and alkali. , salt spray and other corrosion. Especially in the railway turnout structure, the sliding bed is an important pa...

AI Technical Summary

Problems solved by technology

Especially in the railway turnout structure, the sliding bed is an important part that provides the sliding surface for the switch point rail and the core rail and bears the load of the train. It is required to have good wear resistance and impact resistance. Rain and snow, affected by warm and humid (heavy chloride ions) and hot and humid (severe acid rain) climates, the surface is severely corroded

The traditional sliding bed is made of casting technology, and martensitic stainless steel is used. The casting defects are obvious, and the material has poor wear resistance and corrosion resistance.

There are also technical introductions to laser cladding wear-resistant and corrosion-resistant alloys on the surface of the sliding bed. The process equipment is expensive, the cost is high, and the thickness of the cladding is limited.

The existing patent application number is 201310726427.5 "Crack-free high-temperature oxidation-resistant wear-resistant multi-layer surfacing welding electrode" for surface surfacing treatment. Due to its high carbon content and martensitic structure, the corrosion resistance effect is not good. It is very ideal, and it needs preheating before welding and heat preservation after welding to prevent surface cracks, so it is difficult to achieve the ideal effect