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High-carbon high-alloy buried arc automatic weld deposit welding flux

An alloy and high-carbon technology, applied in welding medium, welding equipment, metal processing equipment, etc., can solve the problems of inability to provide welding assistance, achieve high temperature resistance and impact resistance, beautiful weld shape, and increase the wear resistance of workpieces.

Inactive Publication Date: 2010-11-03
李涛 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] During welding, flux can melt to form slag and gas, which can protect and metallurgically treat molten metal. Submerged arc flux is used for submerged arc welding. In terms of submerged arc automatic surfacing welding, traditional submerged arc flux can only meet The physical and chemical requirements in the welding process ensure that the process performance in the welding process is good, and cannot provide greater help for welding

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Weigh raw material (gram) by following weight:

[0019] Manganese oxide 2; silicon dioxide 6; calcium fluoride 45; aluminum dioxide 30; calcium oxide 4; oxide pick 2; sodium fluoride 3; molybdenum powder 0.8; niobium powder 1.2;

[0020] The method is as follows:

[0021] After mixing the above raw materials evenly, put them into a crucible and heat them to 1400°C-1500°C. In industrial mass production, they can be heated by electric arc furnace or flame furnace to melt them. Make it granulated, and then use it after drying, crushing, passing through a 10-60 mesh sieve, and packaging. The flux particles are black glass with a particle size of 10-60 mesh.

[0022] Use the welding flux of embodiment 1 and the welding effect comparison of high wear-resistant flux-cored welding wire welding blast furnace distribution chute lining plate:

[0023] The blast furnace distribution chute is the feeding chute for blast furnace raw material ore in large iron and steel enterprises....

Embodiment 2

[0027] Weigh raw material (gram) by following weight:

[0028] Manganese oxide 3; silicon dioxide 4; calcium fluoride 40; aluminum dioxide 35; calcium oxide 3; oxide pick 3; sodium fluoride 4; molybdenum powder 0.6; niobium powder 1.0;

[0029] Preparation method is as embodiment 1.

[0030] Use the flux of embodiment 2 and the high wear-resistant flux-cored welding wire to weld the outer surface of the grinding roller. The grinding roller is a mechanical main part for power plants and cement plants to grind mineral raw materials into powdery raw materials. The constant collision and friction between the grinding discs requires extremely high hardness and wear resistance.

[0031] Using ordinary 107 flux and high wear-resistant flux-cored wire to surfacing the outer surface of the grinding roller, the HRC hardness can reach about 60, and the wear resistance is good.

[0032] Using the flux of Example 2 and the high wear-resistant flux-cored wire to overlay the outer surface ...

Embodiment 3

[0034] Weigh raw material (gram) by following weight:

[0035] Manganese oxide 1; silicon dioxide 5; calcium fluoride 50; aluminum dioxide 25; calcium oxide 5; oxide pick 4; sodium fluoride 5; molybdenum powder 0.7; niobium powder 1.1;

[0036] Use the flux of embodiment 3 and high wear-resistant flux-cored welding wire and use common 107 flux and high wear-resistant flux-cored welding wire to weld the welding effect comparison of blast furnace distribution chute liner:

[0037] Using ordinary 107 flux and high wear-resistant flux-cored wire to weld the lining plate of the blast furnace distribution chute, the HRC hardness can reach about 60, the wear resistance and impact resistance are good, and the service life is about 8 months.

[0038] Using the flux of Example 3 and the high wear-resistant flux-cored wire to weld the lining plate of the blast furnace distribution chute, the HRC hardness can reach 64-65, the wear resistance and impact resistance are more excellent, and i...

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Abstract

The invention discloses a submerged arc automatic surfacing flux of high carbon and high alloy. The composition and mixture ratio of the flux is 1-3 wt portions of manganese oxide, 4-5 wt portions of silicon dioxide, 40-50 wt portions of calcium fluoride, 25-35 wt portions of aluminum oxide, 3-5 wt portions of calcium oxide, 3-4 wt portions of zirconium oxide, 4-5 wt portions of sodium fluoride, 0.6-0.8 wt portion of molybdenum powder, 1.0-1.2 wt portions of niobium powder and 4-6 wt portions of chromic carbide. The invention ensures the alloy components melt at the surface of a work piece during welding process, thereby improving wear resistance, high temperature resistance and impact resistance of the work piece, increasing hardness of welding surface. The voltaic arc is stable during welding process, slag is easy to fall, the weld formation is nice, transition is smooth, no preheating before welding and heat treatment after welding are required.

Description

technical field [0001] The invention relates to a submerged arc automatic surfacing flux, in particular to a high-carbon and high-alloy submerged arc automatic surfacing flux. Background technique [0002] During welding, flux can melt to form slag and gas, which can protect and metallurgically treat molten metal. Submerged arc flux is used for submerged arc welding. In terms of submerged arc automatic surfacing welding, traditional submerged arc flux can only meet The physical and chemical requirements in the welding process ensure that the process performance in the welding process is good, and cannot provide greater assistance to welding. Due to the limitation of the flux formula, the workpiece should be preheated before welding and heat treated after welding, otherwise cracks will easily occur, and the hardness and wear resistance of the weld layer formed after welding are generally very low. Contents of the invention [0003] The present invention aims at the above d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/362
Inventor 李波李涛
Owner 李涛
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