Carbon steel boriding medium and preparation method thereof

A technology of boronizing agent and carbon steel, which is applied in coating, metal material coating process, solid-state diffusion coating, etc., can solve the problems of high cost of boronizing agent, peeling of surface boronizing layer, obvious boundary, etc. The effect of improving the boronizing effect and reducing the amount of use

Inactive Publication Date: 2013-04-03
姚芙蓉
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The boronizing layer of the boriding agent used in the current technology is shallow, the maximum is not more than 0.15mm, and the boundary between the boronizing layer and the substrate is obvious, w...

Method used

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Embodiment Construction

[0014] Described preparation method is:

[0015] Ingredients, by weight percentage, 25% borax, 8% sodium fluoroborate, 22% clay, 7% urea, 6% ferrosilicon, 4% ammonium bicarbonate, 1.0% aluminum, 0.002% Titanium dioxide, 0.3% rare earth fluoride and the rest of graphite and charcoal; the weight ratio of graphite and charcoal is 1:1 for batching;

[0016] The above-mentioned materials are ground into powder through a mill, and powder materials can also be used;

[0017] Mix the above materials with a mixer, add 25% water of the total weight while mixing, and then process them into particles with an average particle size of 3-4 mm with a granulator, and dry them in an oven at 150°C after natural drying Dry to make boronizing agent.

[0018] The method of use is,

[0019] Put the boronizing agent into the boronizing box and preheat it to 130-150°C, and bury it into the workpiece to be treated. 880±30°C heat preservation for 6-10 hours, after quenching in the furnace or quenchi...

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PUM

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Abstract

The invention relates to a carbon steel boriding medium and a preparation method thereof. The carbon steel boriding medium is composed of the following materials in percentage by weight: 25% of borax, 8% of sodium fluoroborate, 22% of clay, 7% of urea, 6% of ferrosilicon, 4% of ammonium bicarbonate, 1.0% of alumium, 0.002% of titanium dioxide, 0.3% of rare earth fluoride and the balance of graphite and charcoal by weight percentage. According to the technical proposal provided by the invention, the dosage of the rare earth is reduced and the boriding effect is improved.

Description

technical field [0001] The invention belongs to the field of alloy steel heat treatment, in particular to a carbon steel boronizing agent and a preparation method. Background technique [0002] For some metal workpieces, in order to improve their performance, it is necessary to carry out chemical heat treatment on metal workpieces, especially for some workpieces that require high surface hardness, wear resistance, and impact resistance, boronizing treatment is generally used to utilize boron. It can increase the wear resistance of the alloy, where a boronizing agent is required. [0003] The boronizing agent used in the current technology has a shallow boronizing layer, the maximum of which is not more than 0.15 mm, and the boundary between the boronizing layer and the substrate is obvious, which easily leads to peeling off of the boronizing layer on the surface. On the other hand, currently used boronizing agents use noble metals and rare earth metals, resulting in high co...

Claims

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Application Information

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IPC IPC(8): C23C8/70
Inventor 姚芙蓉
Owner 姚芙蓉
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