Method for preparing reinforced tungsten carbide abrasion-resistant composite plate

A tungsten carbide and composite plate technology, applied in chemical instruments and methods, coatings, layered products, etc., can solve problems such as inability to meet wear resistance requirements, and achieve simplified production process flow, improved production efficiency, and reduced production costs. Effect

Inactive Publication Date: 2011-10-12
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the current situation that the existing high-chromium cast iron wear-resistant alloys cannot meet higher wear-resistant requirements, the present invention provides a method for preparing a reinforced tungsten carbide high-wear-resistant composite plate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] (1) Select Q235 low-carbon steel plate as the substrate, the size of the substrate is 1m×2m, and the thickness is 8mm. Use the commonly used shot peening method to remove oil and rust on the surface of the substrate.

[0043] (2) Place the substrate cleaned in step (1) horizontally with the cleaned side facing up. Evenly spread the film remover on the cleaned substrate surface, the thickness of the film remover is 0.2mm, and the composition (mass percentage) of the film remover is 25% of borax and 75% of boric acid.

[0044] (3) Evenly spread the alloy powder on the surface of the film remover in step (2), the particle size of the alloy powder is-40 mesh~+300 mesh, the thickness of the alloy powder is 5mm, and the composition (mass percentage) of the alloy powder is: C is 3.6%, Cr is 30%, B is 2.1%, Si is 1.8%, Mo is 3.0%, Ni is 4.0%, and the rest is Fe and impurities that do not affect the properties of the alloy powder.

[0045] (4) On the surface of the alloy powde...

Embodiment 2

[0049] (1) Select Q345 steel plate as the substrate, the size of the substrate is 1m×1.5m, and the thickness is 10mm. The surface of the substrate is cleaned by a common chemical method of a mixed aqueous solution of sulfuric acid and hydrochloric acid. The pickling parameters are: a mixed aqueous solution of 9% sulfuric acid by volume and 6% hydrochloric acid by volume. The pickling temperature is 20°C and the pickling time is 10 minutes.

[0050] (2) Place the substrate cleaned in step (1) horizontally with the cleaned side facing up. Evenly spread the film remover on the cleaned substrate surface, the thickness of the film remover is 0.5mm, and the composition (mass percentage) of the film remover is 80% boric acid, 15% borax, and 5% calcium fluoride.

[0051] (3) Evenly spread the alloy powder on the surface of the film remover in step (2), the particle size of the alloy powder is-40 mesh~+300 mesh, the thickness of the alloy powder is 6mm, and the composition (mass percen...

Embodiment 3

[0056] (1) Select Q195 steel plate as the substrate, the size of the substrate is 0.5m×1.0m, and the thickness is 6mm. Use the commonly used sulfuric acid aqueous solution chemical method to clean the surface of the substrate. The pickling parameters are: 10% sulfuric acid aqueous solution by volume percentage, the pickling temperature is 50°C, and the pickling time is 15 minutes.

[0057] (2) Place the substrate cleaned in step (1) horizontally with the cleaned side facing up. Evenly spread the film remover on the cleaned substrate surface, the thickness of the film remover is 0.2mm, and the composition (mass percentage) of the film remover is 100% boric acid.

[0058] (3) Evenly spread the alloy powder on the surface of the film remover in step (2), the particle size of the alloy powder is-40 mesh~+300 mesh, the thickness of the alloy powder is 1mm, and the composition (mass percentage) of the alloy powder is: C is 3%, Cr is 28%, B is 2.5%, Si is 2.0%, Mo is 3.5%, Ni is 4.5...

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Abstract

The invention discloses a method for preparing a reinforced tungsten carbide abrasion-resistant composite plate. The method comprises the following steps of: selecting a low-carbon steel plate or a low-alloy steel plate adapted with the size of a hearth of a heating furnace as a substrate, uniformly spreading film removing agent, alloy powder, tungsten carbide powder and slag forming agent powder on a cleared surface, horizontally putting the substrate into the heating furnace, and heating the substrate to obtain the reinforced tungsten carbide abrasion-resistant composite plate. The abrasion-resistant alloy surface of the working layer of the reinforced tungsten carbide abrasion-resistant composite plate produced by using the method is flat and attractive; the composite plate can be directly used for the working conditions (such as a baffle plate and the like) requiring flat surfaces, so a machining process and corresponding production cost are saved; and the composite plate can be widely applied to the working condition of high abrasive abrasion, and has longer service life.

Description

technical field [0001] The invention relates to a preparation method of a wear-resistant composite board, in particular to a preparation method of a reinforced tungsten carbide high-wear-resistant composite board. Background technique [0002] In the field of industrial production, metal wear is one of the main reasons for the failure of mechanical parts, such as material conveying systems in industries such as metallurgy, coal, electric power, and channel dredging, where component wear is very serious. Abrasion not only causes a huge loss of materials, but also overhaul often causes production stoppage, affecting the normal operation of the production line. Therefore, the research and development of high wear-resistant materials has always been valued by material workers. [0003] The anti-wear alloy of integral casting is a traditional wear-resistant material, such as high manganese steel, white cast iron, chromium-based anti-wear cast iron, etc. The use of such materials...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10B32B15/01
Inventor 孙俊生孙逸群张凌峰
Owner SHANDONG UNIV
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