High-temperature wear-resistant surfacing alloy material based on ultralow-carbon high-boron and preparation method and application thereof

Abstract

The invention discloses a high-temperature wear-resistant surfacing alloy material based on ultralow-carbon high-boron. The alloy material comprises a 304L stainless steel strip and a metal powder core; and the alloy material comprises the following chemical components of, by mass, less than 0.02% of carbon, 13.2-15.2% of chromium, 0.2-0.5% of silicon, 1.2-1.5% of manganese, 0.19-2.02% of niobium,4.0-5.0% of boron, 4.1-5.2% of nickel, 0.2-2.9% of molybdenum, 0.84-1.44% of tungsten, 0.19-2.88% of vanadium and the balance iron. The invention further discloses a preparation method of the high-temperature wear-resistant surfacing alloy material based on the ultralow-carbon high-boron, a coupling arc hot wire TIG welding is utilized, the vanadium, the molybdenum and the tungsten alloy elementsare introduced into the surfacing alloy material, different types of multi-element composite metal boride is formed in the surfacing alloy, so that the ultralow-carbon high-boron iron-based surfacingalloy material has high hardness and good high-temperature wear resistance, and good thermal stability can be achieved; and the high-temperature wear resistance and the thermal stability which cannotbe obtained by the high-carbon high-chromium-chromium iron-based surfacing alloy material can be obtained, and the service life of worn parts in a high-temperature environment can be prolonged.

Description

technical field [0001] The invention relates to the field of high-temperature surfacing welding, in particular to a high-temperature wear-resistant surfacing welding alloy material based on ultra-low carbon and high boron, and a preparation method and application thereof. Background technique [0002] In recent years, with the improvement of the production capacity of the metallurgical industry, the single roller and tooth crown of the sintering crusher, the blast furnace rotary distribution chute, the slag flushing box, the transfer tower liner, the coal cutting box and other components have serious high-temperature wear, resulting in equipment shutdown for maintenance or Replacement of wear-resistant parts reduces the economic benefits of the enterprise. These parts are currently repaired in high carbon high chromium cast iron for extended life. However, due to the long-term operation of the equipment in high temperature, erosion, heavy load and other environments, the co...

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Problems solved by technology

At present, there are many studies on high-boron high-temperature wear-resistant alloy materials with boron content as the hypoeutectic alloy. For example, in the iron-based high-temperature wear-resistant surfacing alloy studied by Fu Yingqing et al., the content of B is 3.1%, and the content of C is 2.01%. %, the content of B in the iron-based high-temperature wear-resistant surfacing alloy studied by Liu Zhengjun and others is 2.64%, and the content of C is 2.11%. A kind of high-boron alloy steel material for rolls prepared in the patent CN103741059A contains 0.5 -0.8% B, 0.8-0.9% C, but there are few reports on boride high-temperature wear-resistant materials with ultra-low carbon and boron content hypereutectic

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