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Method for preparing laser cladding layer through double-layer organic coating iron-based alloy powder

An iron-based alloy and laser cladding technology, applied in coatings, metal material coating processes, etc., can solve the problems of reduced mechanical properties, high boron and silicon content, easy cracking of the cladding layer, etc. The effect of comprehensive high quality and less defects such as slag inclusion

Active Publication Date: 2015-11-25
NANHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In the field of laser metal forming technology, self-fluxing alloy powder is widely used at present. This kind of powder has high content of boron and silicon, and the cladding layer is easy to crack; if nickel-based powder is used, the cost is too high; in the atmospheric environment, iron The base alloy powder is easy to oxidize and burn during the laser cladding process, and the cladding layer has defects such as pores and slag inclusions, which leads to a decrease in mechanical properties

Method used

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  • Method for preparing laser cladding layer through double-layer organic coating iron-based alloy powder
  • Method for preparing laser cladding layer through double-layer organic coating iron-based alloy powder
  • Method for preparing laser cladding layer through double-layer organic coating iron-based alloy powder

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preparation example Construction

[0033] For the preparation of iron-based alloy powder, according to the mass percentage, 15%-19% of chromium, 2%-9% of nickel, 0.05%-0.15% of boron content, 0.1%-0.7% of silicon content, and no more than 0.3% of carbon content are selected. The balance is iron; it is 0.06%-0.2% rosin (molecular formula C 19 h 29 COOH), and alloy powder weight percentage is 0.15%-0.4% industrial gorgon powder (molecular formula (C 6 h 10 o 5 )n).

[0034] Then add the selected rosin in absolute ethanol, the ratio is to add 0.85-2.85g of rosin per 100mL of absolute ethanol; then stir to dissolve; the above-mentioned iron-based alloy powder containing Cr, Ni, B, Si, C and other elements , according to the ratio of adding 100g of iron-based alloy powder to every 7mL of absolute ethanol, adding the weighed above-mentioned iron-based alloy powder into absolute ethanol in which rosin has been dissolved, and stirring to obtain a mixed slurry;

[0035] Put the prepared mixed slurry on the electric...

Embodiment 1

[0057] According to the mass percentage, choose 15% Cr, 2% Ni, 0.05% B, 0.1% Si, 0.1% C, and the iron-based alloy powder whose balance is Fe; The rosin and the iron-based alloy powder are 0.15% by weight of industrial gorgon powder. Then add the selected rosin in dehydrated alcohol, the ratio is to add 0.85g rosin in every 100mL dehydrated alcohol; then stir and dissolve; the above-mentioned iron-based alloy powder containing elements such as Cr, Ni, B, Si, C, according to The proportion of adding 100g of iron-based alloy powder per 7mL of absolute ethanol, the above-mentioned iron-based alloy powder containing elements such as Cr, Ni, B, Si, C, etc., is added to the absolute ethanol in which rosin has been dissolved, and stirred to obtain a mixed Slurry: put the prepared mixed slurry on the electric furnace while heating and stirring, evaporate the absolute ethanol to dryness, put the evaporated material in a blast drying oven at a drying temperature of 40°C, further dry it, ...

Embodiment 2

[0059] According to the mass percentage, choose 17% Cr, 5.0% Ni, 0.10% B, 0.5% Si, 0.3% C, and the iron-based alloy powder whose balance is Fe; the weight percentage with the iron-based alloy powder is 0.1% The rosin and the iron-based alloy powder are 0.3% by weight of industrial gorgon powder. Then add the selected rosin in absolute ethanol, the ratio is to add 2.85g of rosin per 100mL of absolute ethanol; then stir to dissolve; The ratio of adding 100g of iron-based alloy powder to absolute ethanol is to add the above-mentioned iron-based alloy powder containing Cr, Ni, B, Si, C and other elements into the absolute ethanol in which rosin has been dissolved, and stir to obtain a mixed slurry ; Place the prepared mixed slurry on the electric furnace while heating and stirring, evaporate the absolute ethanol to dryness, put the evaporated material in a blast drying oven at a drying temperature of 80°C, further dry it, and take it out after 12 hours; The mixed powder material ...

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Abstract

The invention discloses a method for preparing a laser cladding layer through double-layer organic coating iron-based alloy powder. 15%-19% of chromium, 2%-9% of nickel, 0.05%-0.15% of boron, 0.1%-0.7% of silicon, carbon less than 0.3% and the balance iron are selected; and then rosin accounting for 0.06%-0.2% of the total weight of the iron-based alloy powder and industrial starch accounting for 0.15%-0.4% of the total weight of the iron-based alloy powder are selected. The selected rosin is added to absolute ethyl alcohol, and the iron-based alloy powder is added to the absolute ethyl alcohol with the dissolved rosin; and rosin film coated iron-based alloy powder is prepared through drying by distillation, drying and breaking. Then, the industrial starch is added to pure water to be heated and stirred to obtain an even pasty solution, and the rosin film coated iron-based alloy powder is put in the pasty industrial starch; secondary mixed slurry is obtained; and the double-layer organic coating iron-based alloy powder can be obtained through stirring, drying by distillation and breaking. The laser cladding layer of the powder is flat in surface, has metal luster and is high in comprehensive quality.

Description

technical field [0001] The invention belongs to the technical field of laser metal forming, and relates to a method for preparing a laser cladding layer by coating iron-based alloy powder with double layers of organic matter. Background technique [0002] In the field of laser metal forming technology, self-fluxing alloy powder is widely used at present. This kind of powder has high content of boron and silicon, and the cladding layer is easy to crack; if nickel-based powder is used, the cost is too high; in the atmospheric environment, iron The base alloy powder is easy to oxidize and burn during the laser cladding process, and the cladding layer has defects such as pores and slag inclusions, which leads to a decrease in mechanical properties. Contents of the invention [0003] The purpose of the present invention is to provide a method for preparing a laser cladding layer by coating iron-based alloy powder with double-layer organic matter. Iron-based alloy powder is used...

Claims

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Application Information

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IPC IPC(8): B22F1/02C23C24/10C22C38/54
Inventor 邱长军贺沅玮张净宜胡良斌
Owner NANHUA UNIV
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