Manufacturing method for furnace bottom roller

A manufacturing method and furnace bottom roller technology, which are applied in metal material coating process, coating and other directions, can solve the problems of high cost, impact on product quality and service life, roll ring accumulation, etc., so as to prolong service life and improve durability. Grinding, reducing the effect of accumulation

Active Publication Date: 2016-04-13
武钢中冶工业技术服务有限公司
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Problems solved by technology

[0003] The present application provides a method for manufacturing hearth rolls, which solves the technical problem of th

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  • Manufacturing method for furnace bottom roller
  • Manufacturing method for furnace bottom roller
  • Manufacturing method for furnace bottom roller

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Embodiment Construction

[0022] The embodiment of the present application provides a method for manufacturing hearth rolls, which solves the technical problem of the build-up of roll rings in the prior art, which affects product quality and service life, and the cost is relatively high.

[0023] The technical solution in the embodiment of the present application is to solve the technical problems in the prior art, and the general idea is as follows:

[0024] A method for manufacturing a hearth roll, the manufacturing method comprising: making a nickel-based roll ring and a roll core, fixing the nickel-based roll ring on the roll core to obtain a prefabricated hearth roll; cleaning the nickel-based roll The surface of the roll ring; obtaining a cladding powder comprising NiCr-Cr 3 C 2 , WC, TiN, rare earth, wherein, the NiCr-Cr 3 C 2 The mass percentage is 80% to 90%; the prefabricated hearth roll is fixed on the machine tool, and the surface of the nickel-based roll ring is laser clad by a laser we...

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Abstract

The invention discloses a manufacturing method for a furnace bottom roller. The manufacturing method comprises the following steps: manufacturing a nickel-based roller ring and a roller core, and fixing the nickel-based roller ring on the roller core to obtain a prefabricated furnace bottom roller; clearing the surface of the nickel-based roller ring to obtain fusion covering powder which comprises 80%-90% (in percentage by mass) of NiCr-Cr3C2, WC, TiN and rare earth; fixing the prefabricated furnace bottom roller on a machine tool, adopting a laser welder to carry out laser fusion covering on the surface of the nickel-based roller ring 21, and feeding fusion covering powder to the surface of the nickel-based roller ring; and carrying out thermal treatment on the nickel-based roller ring subjected to fusion covering to obtain the furnace bottom roller. According to the manufacturing method, laser fusion covering is carried out on the surface of the nickel-based roller ring, and fusion covering powder comprising NiCr-Cr3Cr2, WC, TiN and the rare earth is fed to the surface of the nickel-based roller ring during fusion covering to form a composite coating, so that wear resistance is improved, accumulated burls are effectively reduced, and the service life is prolonged; and in comparison with cost of a cobalt-based roller ring, the cost of the nickel-based roller ring is reduced.

Description

technical field [0001] The invention relates to the technical field of hearth rolls, in particular to a method for manufacturing hearth rolls. Background technique [0002] During the use of traditional nickel-based hearth rolls, the oxide scales on the billet surface of the roll rings gradually accumulate and superimpose, which undergoes further high-temperature oxidation reactions in a soft state that is almost hot-melt, and adheres to the initially formed oxide scales on the roll ring surface , the surface nodules gradually increase, and the roll ring build-up phenomenon is serious, which affects the product quality and service life. The technology currently used is to use cobalt-based roller rings instead of nickel-based roller rings, but the cost is relatively high. Contents of the invention [0003] The present application provides a method for manufacturing hearth rolls, which solves the technical problem of the build-up of roll rings in the prior art, which affect...

Claims

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Application Information

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IPC IPC(8): C23C24/10
CPCC23C24/103
Inventor 李金龙卢献忠杜雪堂李恒山
Owner 武钢中冶工业技术服务有限公司
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