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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  • 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

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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Experimental program
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Example Embodiment

[0033] For the preparation of iron-based alloy powder, select chromium 15%-19%, nickel 2%-9%, boron content 0.05% to 0.15%, silicon content 0.1% to 0.7%, and carbon content not higher than 0.3% according to mass percentages. The balance is iron; and the weight percentage of iron-based alloy powder is 0.06%-0.2% rosin (molecular formula C 19 H 29 COOH), and the alloy powder weight percentage of 0.15%-0.4% industrial gorgon powder (molecular formula (C 6 H 10 O 5 )n).

[0034] Then add the selected rosin to the absolute ethanol at a ratio of 0.85-2.85g rosin per 100mL of absolute ethanol; then stir to dissolve; the above 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, add the weighed iron-based alloy powder to the absolute ethanol with dissolved rosin, and stir to obtain a mixed slurry;

[0035] Place the prepared mixed slurry on an electric furnace while stirri...

Example Embodiment

[0056] Example 1

[0057] According to the mass percentage, select 15% Cr, 2% Ni, 0.05% B, 0.1% Si, 0.1% C, the balance is Fe-based iron alloy powder; and the iron-based alloy powder weight percentage is 0.06% Rosin, industrial gorgon powder with a weight percentage of 0.15% of iron-based alloy powder. Then add the selected rosin to the absolute ethanol at a ratio of 0.85g of rosin per 100mL of absolute ethanol; then stir to dissolve; the above iron-based alloy powder containing Cr, Ni, B, Si, C and other elements, according to Add 100g of iron-based alloy powder to every 7mL of absolute ethanol, add the weighed iron-based alloy powder containing Cr, Ni, B, Si, C and other elements to the absolute ethanol that has dissolved rosin, and stir to obtain a mixture Slurry; Put the prepared mixed slurry on an electric furnace while heating while stirring, evaporate the absolute ethanol to dryness, put the evaporated material in a blast drying box, drying temperature 40 ℃, further dryin...

Example Embodiment

[0058] Example 2

[0059] According to mass percentage, select 17% Cr, 5.0% Ni, 0.10% B, 0.5% Si, 0.3% C, the balance is Fe-based iron alloy powder; the weight percentage of iron-based alloy powder is 0.1% The weight percentage of rosin and iron-based alloy powder is 0.3% industrial gorgon powder. Then add the selected rosin to the absolute ethanol at a ratio of 2.85g of rosin per 100mL of absolute ethanol; then stir to dissolve; iron-based alloy powder containing Cr, Ni, B, Si, C and other elements, according to every 7mL Add 100g of iron-based alloy powder to absolute ethanol, add the weighed iron-based alloy powder containing Cr, Ni, B, Si, C and other elements to the absolute ethanol that has dissolved rosin, and stir to obtain a mixed slurry ; Put the prepared mixed slurry on an electric furnace while heating while stirring, evaporate the absolute ethanol to dryness, put the evaporated material in a blast drying box, drying temperature 80 ℃, further drying, 12h after taking...

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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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