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Sintered flux for babbitt submerged arc brazing and preparation method thereof

A babbitt alloy and sintered flux technology, applied in welding equipment, metal processing equipment, manufacturing tools, etc., to achieve the effects of good babbitt alloy brazing layer quality, easy slag removal, and preventing oxidation of the babbitt alloy brazing layer

Active Publication Date: 2022-07-01
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there is no flux suitable for submerged arc welding to prepare babbitt alloy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A sintered flux for submerged arc brazing of babbitt alloy, the raw material and the weight percentage of each raw material component are: boric acid: 27%; borax: 20%; white corundum: 17%; sodium fluoride: 20%; sodium chloride : 15%; marble: 1%. wherein H in the boric acid 3 BO 3 Content ≥ 95%, Na in the borax 2 B 4 O 7 ·10H 2 O content≥95%, Al in the white corundum 2 O 3 Content ≥ 85%, NaF content in the sodium fluoride ≥ 95%, NaCl content in the sodium chloride ≥ 95%, CaCO in the marble 3 Content ≥ 95%.

[0045] A preparation method of sintered flux for babbitt submerged arc brazing, comprising the following steps:

[0046] (1) dry mixing the powder weighed by weight percentage in a dry mixer until uniform;

[0047] (2) add potassium sodium water glass of 20% of the total weight of ingredients in the powder after dry mixing, and carry out wet mixing in a wet mixer until the wet mixing is uniform;

[0048] (3) the wet powder of wet mixing is sent into the gr...

Embodiment 2

[0056] A sintered flux for submerged arc brazing of babbitt alloy, the raw material and the weight percentage of each raw material component are: boric acid: 36%; borax: 15%; white corundum: 25%; sodium fluoride: 16%; sodium chloride : 5%; marble: 3%. wherein H in the boric acid 3 BO 3 Content ≥ 95%, Na in the borax 2 B 4 O 7 ·10H 2 O content≥95%, Al in the white corundum 2 O 3 Content ≥ 85%, NaF content in the sodium fluoride ≥ 95%, NaCl content in the sodium chloride ≥ 95%, CaCO in the marble 3 Content ≥ 95%.

[0057] A preparation method of sintered flux for babbitt submerged arc brazing, comprising the following steps:

[0058] (1) dry mixing the powder weighed by weight percentage in a dry mixer until uniform;

[0059] (2) add potassium sodium water glass of 25% of the total weight of ingredients in the powder after the dry mixing and carry out wet mixing in a wet mixer until the wet mixing is uniform;

[0060] (3) the wet powder of wet mixing is sent into the ...

Embodiment 3

[0068] A sintered flux for submerged arc brazing of babbitt alloy, the raw material and the weight percentage of each raw material component are: boric acid: 25%; borax: 30%; white corundum: 20%; sodium fluoride: 10%; sodium chloride : 10%; marble: 5%. wherein H in the boric acid 3 BO 3 Content ≥ 95%, Na in the borax 2 B 4 O 7 ·10H 2 O content≥95%, Al in the white corundum 2 O 3 Content ≥ 85%, NaF content in the sodium fluoride ≥ 95%, NaCl content in the sodium chloride ≥ 95%, CaCO in the marble 3 Content ≥ 95%.

[0069] A preparation method of sintered flux for babbitt submerged arc brazing, comprising the following steps:

[0070] (1) dry mixing the powder weighed by weight percentage in a dry mixer until uniform;

[0071] (2) adding potassium sodium water glass of 25% of the total weight of ingredients to the powder after the dry mixing, and performing wet mixing in a wet mixer until the wet mixing is uniform;

[0072] (3) the wet powder of wet mixing is sent int...

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Abstract

The invention discloses a sintered flux for babbitt submerged arc brazing and a preparation method thereof. The sintered flux is composed of the following components by mass percentage: boric acid is 25-38%; borax is 15-30%; white corundum is 10-25%; sodium fluoride is 10-20%; sodium chloride is 5-15%; marble is 1-10%; the sum of the total mass percentages is 100%. The invention has the characteristics of high production efficiency, low comprehensive cost, good quality of the prepared Babbitt alloy brazing layer and the like, and can effectively prevent the oxidation of the brazing layer, the burning of elements, and the fume and spatter in the welding process. The slag is easy, which improves the production efficiency of babbitt welding and improves the production environment.

Description

technical field [0001] The invention belongs to the technical field of welding materials, and relates to a flux, in particular to a sintered flux for babbitt submerged arc brazing and a preparation method thereof. Background technique [0002] Babbitt is a low melting point bearing alloy with a hard particle phase distributed on a soft matrix. It has good anti-adhesion, anti-friction and wear resistance, compliance and embedment, and is mainly used in bearing bushes, bearings, bushings and bushings of large mechanical spindles. The traditional casting method to produce the babbitt alloy layer has very strict requirements on the casting process, the quality is unstable, and the casting method also requires a lot of machining allowance, resulting in a serious waste of babbitt alloy. The production process of flame sprayed babbitt alloy is complex, with a lot of smoke and dust, and the bonding strength between the coating and the steel substrate is low. The invention patent w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/36
CPCB23K35/3603B23K35/0255
Inventor 周方明靳西奎徐冬豪冯师超陈琪昊
Owner JIANGSU UNIV OF SCI & TECH