Cobalt-based alloy powder for laser remanufacturing of housing of rolling mill

Abstract

The invention discloses cobalt-based alloy powder for laser remanufacturing of the housing of a rolling mill, which is characterized by comprising the following components in percentage by mass: 0.8 to 1.4 percent of C, 26 to 32 percent of Cr, 3 to 6 percent of W, 0.6 to 1.4 percent of Mo, 1.2 to 1.8 percent of Ni, 0.2 to 0.6 percent of Mn, 0.8 to 2.4 percent of Si, 1.2 to 4.8 percent of Fe, 0.4 to 1.6 percent of B, 0.2 to 0.6 percent of Ce, 0.2 to 0.6 percent of Hf and the balance of Co. The cobalt-based alloy powder is suitable for the laser deposition of large-area ineffective working face of the housing of the rolling mill, and by depositing the alloy powder, the housing of the rolling mill can be reused and the oxidization resistance, corrosion resistance and washing corrosion resistance of the housing of the rolling mill are improved. The online repair problem of the housing of the rolling mill is solved effectively.

Description

technical field [0001] The invention relates to an alloy powder for laser cladding, in particular to an alloy powder for laser remanufacturing of rolling mill arches with high hardness, oxidation resistance, corrosion resistance, erosion resistance, superior cladding performance, and suitable for large-area cladding. Cobalt based alloy powder. Background technique [0002] The rolling mill archway, also known as the rolling mill frame, is a typical frame structure, mainly composed of two columns with thick sections and upper and lower beams. It is one of the most critical components in the rolling mill. It is a whole frame and is permanently used and cannot be replaced. All the parts that realize the rolling function in the rolling mill are all installed on the arch, so it is the part that bears the rolling force in the rolling mill, plays a supporting and fixing role in the rolling mill, and generally bears a load of thousands of tons. In addition to endless rolling, it a...

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Problems solved by technology

Although there are many patents and reports on the repair of equipment parts by laser cladding or laser remanufacturing technology, the applicant has also filed an application for an invention patent in this regard, but after searching and checking by the applicant: no such application has been found at home and abroad. Related reports on the cobalt-based alloy powder material specially used for large-area laser remanufacturing of the working surface of the rolling mill archway, especially in the domestic and foreign markets, there is no such alloy powder product with special properties and special properties for sale.