Iron-based corrosion resistant wear resistant alloy and deposit welding material for obtaining the alloy

Abstract

To provide a high-performance, inexpensive low C-high Si-high Cr-B-Nb type iron-based corrosion-resistant and wear-resistant alloy that is extremely superior in corrosion resistance and wear resistance to 304 stainless steel, high-chromium cast iron and high carbon-high chromium cast-iron-type materials, has a high corrosion-resistant property that would never be obtained from a high carbon-high chromium carbide precipitation-type iron-based wear-resistant alloy and at the same time, a wear-resistant property that is superior to these metals, and further hardly causes brittle peeling that is inherent to high Si-containing steel. This alloy contains, all percentages by weight, C: 0.5 to 2.5% by weight, Si: 2.5 to 4.5%, Mn: 0 to 10% or less, Cr: 15% to 31%, Ni: 0 to 16%, Cu: 7% or less, Mo: 10% or less, B: 0.5% to 3.5%, and 0+0.083Cr+1.05 is satisfied, within a range of 27% / =570 / Cr-0.066Cr+1.145 is satisfied, and within a range of 20% / =1.25 is satisfied.

Description

technical field [0001] The present invention relates to low-carbon-high-silicon-boron-niobium-high-chromium cast steel iron-based alloys with excellent corrosion resistance and wear resistance, more specifically, to an iron-based alloy with corrosion and wear resistance and The surfacing material used to obtain this alloy has absolutely excellent corrosion resistance and wear resistance compared with 304 stainless steel or high-chromium cast iron, high-carbon-high-chromium cast iron materials, and has high carbon-high Chromium carbide precipitation-type iron-based wear-resistant alloys have high corrosion resistance that cannot be obtained by any means, and these metals have excellent wear resistance, and have high resistance to brittle peeling that is characteristic of high Si-containing steels. performance at a low price. Background technique [0002] In recent years, construction and operation of waste incineration plants, vehicle shredder fluidized bed incinerators, was...

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Problems solved by technology

[0037] However, the excellent characteristics at high temperature, on the contrary, its fragility becomes a huge disadvantage at normal temperature, it is very brittle, and the bending workability is poor. When manufacturing the wear-resistant steel plate deposited by the above patent alloy, it is only suitable for straight items. Items with curvature must be surfacing with welding wire or manual welding rods, often resulting in increased production costs

[0038] In this way, although the above-mentioned patented alloy can obtain the performance comparable to stellite alloy, its biggest disadvantage is that due to the high Si content, it is easy to produce slice-like peeling on the surface of the welded metal, and it is difficult to manufacture a wear-resistant steel plate with a large area.

In addition, in the joint welding between clad steels formed of the same alloy, the hardened metal is stretched by welding stress, and the hardened metal is peeled off, making welding joint very difficult.

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