High-boron low-alloy high-speed steel base WC40 steel-bonded hard alloy guide and guard roller and manufacturing method thereof

Abstract

The invention discloses a high-boron low-alloy high-speed steel base WC40 steel-bonded hard alloy guide and guard roller and a manufacturing method thereof. The roller adopts a high-boron low-alloy high-speed steel base WC40 steel-bonded hard alloy comprising the following chemical components in percentage by mass: 0.2-0.6% of C, 5.0-7.0% of Cr, 2.5-3.0% of W, 1.5-3.0% of Mo, 1.5-2.5% of V, 0.5-1.0% of Nb, 0.3-1.0% of Si, 0.3-1.0% of Mn, 1.4-2.5% of B, 0.3-1.0% of Cu, 0.8-2.0% of Ni, S not more than 0.02, P not more than 0.02, 0.3-0.8% of CeO2, 40% of WC, and the balance of Fe. Then, the alloy is forged, annealed, machined, heated, grinded and inspected to finally prepare the guide and guard roller. The prepared steel-bonded hard alloy guide and guard roller has such excellent physical and mechanical properties as high hardness, wear resistance, high-temperature oxidation resistance and heat shock resistance, prolongs the service life of a guide roller, improves the rolled steel production efficiency and the product quality, is low in production cost, is higher in cost performance, and is higher in economic benefit and social benefit.

Description

technical field [0001] The invention relates to a steel rolling guide roll, in particular to a high-boron low-alloy high-speed steel-based WC40 steel-bonded hard alloy guide roll used for a rolling guide device of a continuous rolling system and a manufacturing method thereof. Background technique [0002] The guide device refers to an important part that guides and guards the rolled piece to enter and exit the rolling mill during the steel rolling production process. deformation. Whether the design and use of the guide device is appropriate will directly affect the quality of the product and the production capacity of the rolling mill. [0003] The rolling guide device is a guide device that guides the rolled piece into the roll pass of the rolling mill when the rolling mill is rolling profiles, bars or wires. The guide roller is mainly a guiding equipment device for rolling steel that guides and assists the rapid passage of rolling billets or finished products. The guide...

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Problems solved by technology

There are also reports abroad about the application of steel-bonded hard alloys in hot work dies. For example, the United States and other countries have used steel-bonded hard alloys to make single-groove or double-groove rolls for hot-rolled threaded steel bars, and for manufacturing high-speed rolling mills. Guide roller; while there are fewer reports in this area in our country

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