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Low-grade attapulgite welding rod and preparing method thereof

An attapulgite, low-grade technology, applied in welding equipment, welding media, manufacturing tools, etc., can solve the problems of easy cracks in welds and difficult slag removal, and achieve the effects of easy mining, abundant reserves, and low price

Active Publication Date: 2017-06-27
盱眙凹土能源环保材料研发中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Trivalent metal oxides and divalent metal oxides easily form spinel (MeO·Me 2 o 3 ), the lattice constants of this spinel and ferrous oxide are not much different, and they can be closely arranged with each other, resulting in difficulty in slag removal; at the same time, when the sulfur and phosphorus content is too high, the weld is prone to cracks

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: at first, 200g attapulgite raw ore is at 80 o C was acidified with 1600mL of formic acid aqueous solution with a mass concentration of 3% for 4 hours, washed to neutrality, filtered and dried, and ground to 200 mesh; then, at 85 o C was modified with 800 mL of 3% sodium hydroxide aqueous solution for 1 hour, washed to neutrality, filtered and dried, and ground to 200 mesh to obtain modified attapulgite; then, according to the modified attapulgite 35%, dolomite 23%, 20% magnesite, 14% quartz sand, 1% starch, 1% microcrystalline fiber, 2% white mud, 2% titanium powder and 2% iron powder are mixed evenly to obtain the electrode coating; Finally, the electrode coating and the improved sodium potassium water glass binder are mixed according to the mass ratio of 3:1, sent to the electrode press coater to be evenly coated on the welding core, dried and shaped, and the end points are polished, which is electric welding. Bar finished product, wherein said improved...

Embodiment 2

[0018] Embodiment 2: at first, 200g attapulgite raw ore is at 95 o C was acidified with 500 mL of formic acid aqueous solution with a mass concentration of 20% for 1 h, washed to neutrality, filtered and dried, and ground to 200 mesh; then, at 50 o C was modified with 800 mL of potassium hydroxide aqueous solution with a mass concentration of 3% for 1 hour, washed to neutrality, filtered and dried, and ground to 200 mesh to obtain modified attapulgite; then, according to the modified attapulgite 53%, dolomite 15%, 15% magnesite, 11% quartz sand, 1% starch, 1% microcrystalline fiber, 2% white mud, 1% titanium powder and 1% iron powder are mixed evenly to obtain the electrode coating; Finally, mix the welding rod coating and the improved sodium potassium water glass binder according to the mass ratio of 5:1, and send it to the welding rod coating machine to evenly press and coat the welding core, dry and shape, and the end point is ground, which is electric welding. Bar finishe...

Embodiment 3

[0020] Embodiment 3: at first, 200g attapulgite raw ore is at 80 o C was acidified with 1200 mL of acetic acid aqueous solution with a mass concentration of 9% for 2.5 hours, washed to neutrality, filtered and dried, and ground to 200 mesh; then, at 85 o C was modified with 800mL of 3% ammonia aqueous solution for 3 hours, washed to neutral, filtered and dried, and ground to 200 mesh to obtain modified attapulgite; then, according to the modified attapulgite 47.5%, dolomite 17.5% , magnesite 17.5%, quartz sand 11%, starch 1%, microcrystalline fiber 1%, white clay 1.5%, titanium powder 1.5% and iron powder 1.5% are mixed evenly in mass proportion to obtain electrode coating; finally, Stir the welding rod coating and the improved sodium potassium water glass binder according to the mass ratio of 4:1, send it to the welding rod coating machine to evenly press and coat it on the welding core, dry and shape, and polish the end point, that is, the finished welding rod , wherein sai...

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PUM

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Abstract

The invention discloses a low-grade attapulgite welding rod and a preparing method thereof. A coating of the welding rod comprises, by mass, 35% to 60% of modified low-grade attapulgite, 12% to 23% of dolomite, 15% to 20% of magnesia, 8% to 14% of quartz sand, 1% of starch, 1% of microcrystalline cellulose, 1% to 2% of white mud, 1% to 2% of titanium powder and 1% to 2% of iron powder. The manufacturing method of the welding rod comprises the steps that the welding rod coating is modulated according to the above formula firstly, the welding rod coating and an improved sodium-potassium sodium silicate binder are evenly stirred, a mixture is fed into a welding rod press coating machine to be pressed on a core wire in a coated manner, drying and shaping are carried out, and the welding rod is obtained. The low-grade attapulgite raw ore is subject to modification treatment and serves as the main component of the coating of the welding rod, the waste becomes wealth, the preparing method is simple, the production cost of the welding rod is reduced, the welding rod prepared through the improved sodium-potassium sodium silicate binder is excellent in humidity resistance, the welding technology property is good, and the welding rod has the good application prospect in the welding rod manufacturing field.

Description

technical field [0001] The invention relates to the technical field of electrode preparation, in particular to a low-grade attapulgite-based electrode and a manufacturing method thereof. Background technique [0002] The rapid development of modern buildings, bridges, high-speed railways and other industries requires a large amount of steel, and the steel in engineering construction needs to be connected by welding, so the demand for welding electrodes is huge. my country has become the world's largest producer of welding materials. Marble, fluorite, ferroalloy, rutile, titanium dioxide, quartz, mica, etc. are the main basic materials in the electrode coating. Since the beginning of the 21st century, the shortage of welding rod coating materials such as rutile and titanium dioxide and the sharp price increase have continuously increased the production cost of welding rods. [0003] In order to reduce the production cost of welding rods, the welding rod industry is developi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/36B23K35/40
Inventor 陈新德陈雪芳熊莲张海荣王璨郭海军彭芬唐伟超
Owner 盱眙凹土能源环保材料研发中心
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