A kind of marine high-fluorine aluminum-titanium type sintered flux and preparation method thereof

A high-fluorine aluminum-titanium type, sintered flux technology, applied in welding equipment, manufacturing tools, welding media, etc., can solve the problems of unstable impact toughness of weld metal, high content of alkaline oxides, and poor welding process performance. , to achieve good weld strength and low temperature toughness, smooth weld bead, good slag removal

Active Publication Date: 2022-02-11
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main components of flux slag commonly used in my country are CaO, MgO, SiO 2 etc., the content of basic oxides in this type of flux is too high, the welding process performance is not good, and the impact toughness of weld metal is unstable

Method used

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  • A kind of marine high-fluorine aluminum-titanium type sintered flux and preparation method thereof
  • A kind of marine high-fluorine aluminum-titanium type sintered flux and preparation method thereof
  • A kind of marine high-fluorine aluminum-titanium type sintered flux and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Boat high fluoride-type sintered flux, containing ingredients in mass: Caf 2 : 70%, Al 2 O 3 : 22%, TiO 2 :8%.

[0041] The preparation method of the marine high fluoride-type sintered flux of the present invention includes the following steps:

[0042] Step 1, mixed:

[0043] (1) After the ingredient ratio of high fluoro-aluminum-type sintered flux, after weighing all raw materials, put into the mixing equipment, stir well, and make dry mixing materials;

[0044] (2) According to the mass ratio, water glass: dry mixing material = 20%, water glass and dry blending materials are wet, and the wet mix is ​​prepared; wherein the water glass is a sodium glass;

[0045] Step 2, granulation:

[0046] (1) Take the wet mix by granulation, select the particle size of 16 to 50 mesh particles as a semi-finished product;

[0047] (2) Crack the particles of 50 megadownload megadownload megadownload megadownload megadownload megadownload megadownload megadownload megadownload megadownload...

Embodiment 2

[0053] Boat high fluoride-type sintered flux, containing ingredients in mass: Caf 2 : 71%, Al 2 O 3 : 20%, TiO 2 :9%.

[0054] The preparation method of the marine high fluoride-type sintered flux of the present invention includes the following steps:

[0055] Step 1, mixed:

[0056] (1) After the ingredient ratio of high fluoro-aluminum-type sintered flux, after weighing all raw materials, put into the mixing equipment, stir well, and make dry mixing materials;

[0057] (2) According to the mass ratio, water glass: dry mix feedstock = 22%, water glass and dry mixing materials are wet, and the wet is prepared; wherein the water glass is potassium water glass;

[0058] Step 2, granulation:

[0059] (1) Take the wet mix by granulation, select the particle size of 16 to 50 mesh particles as a semi-finished product;

[0060] (2) Crack the particles of 50 megadownload megadownload megadownload megadownload megadownload megadownload megadownload megadownload megadownload megadownload mega...

Embodiment 3

[0066] Boat high fluoride-type sintered flux, containing ingredients in mass: Caf 2 : 70%, Al 2 O 3 : 20%, TiO 2 : 10%.

[0067] The preparation method of the marine high fluoride-type sintered flux of the present invention includes the following steps:

[0068] Step 1, mixed:

[0069] (1) After the ingredient ratio of high fluoro-aluminum-type sintered flux, after weighing all raw materials, put into the mixing equipment, stir well, and make dry mixing materials;

[0070] (2) According to the mass ratio, water glass: dry mix feedstock = 23%, water glass and dry mix feedstock are mixed, and the wet is prepared; wherein the water glass is a sodium glass and potassium water glass according to mass ratio. 1: 1 mixture formed;

[0071] Step 2, granulation:

[0072] (1) Take the wet mix by granulation, select the particle size of 16 to 50 mesh particles as a semi-finished product;

[0073] (2) Crack the particles of 50 megadownload megadownload megadownload megadownload megadownload me...

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Abstract

A marine high-fluorine aluminum-titanium type sintered flux and a preparation method thereof of the present invention. The sintered flux composition includes dry blended raw materials and binders, wherein the dry blended raw materials include components and mass percentages: CaF 2 : 68~72%, Al 2 o 3 : 18~22%, TiO 2 : 8% to 12%; the quality of the binder is 20% to 25% of the quality of the dry mixing raw materials. During the preparation, according to the proportion of ingredients, dry blending and wet blending are carried out successively to obtain wet blends. After granulation and drying, the sintering time is 1 to 3 hours at 280-600 ° C to obtain marine high-fluorine aluminum-titanium type sintered flux. . This method prepares a new type of high-fluorine aluminum-titanium type sintered flux for marine use, which can be well matched with low-carbon and low-alloy ship plate steel to obtain uniform weld composition, good weld strength and low-temperature toughness. Weld metal bead is smooth, with good slag detachability and no defects after inspection, which can meet the welding process requirements.

Description

Technical field [0001] The present invention belongs to the field of welding technology, and is specifically a marine high fluoride-type sintered flux and a preparation method thereof. Background technique [0002] The submerged arc welding has the advantages of high production efficiency, high mechanization, good material, good welding quality, and stable welding, and has been widely used in the fields of ship manufacturing. The submerged arc welding is one of the main consumables of the submerged arc welding, and the weld metal is mechanically protected, metallurgical and improved welding process during the welding process. The welding process performance and chemical metallurgical properties of the flux are determined to weld. An important factor in metal quality. my country's currently used flux slag is mainly CaO, MgO, SiO 2 Wait, the type of flux is too high, the welding process is poor, and the weld metal impact toughness is unstable. Inventive content [0003] In respons...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/362B23K35/40
CPCB23K35/362B23K35/40
Inventor 王聪杨佳坤张进高俊烽
Owner NORTHEASTERN UNIV LIAONING
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