CN102029489A

CN102029489A - Welding electrode coating

Info

Publication number: CN102029489A
Application number: CN200910177180XA
Authority: CN
Inventors: 李德贵
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-09-28
Filing date: 2009-09-28
Publication date: 2011-04-27

Abstract

The invention relates to a welding electrode coating. The coating is prepared from the following raw materials by weight: 1kg of marble, 2kg of titanium white, 14.78kg of reduced titanium, 1kg of cellulose, 4 kg of rutile, 3kg of coarse mica, 2kg of fine mica, 3kg of white mud, 2.4 kg of feldspar, and 15.12kg of medium manganese; the coating is prepared by uniformly mixing the raw materials of the coating; and when used for a welding electrode, the coating is pressed and coated on a core wire by taking 38 to 40 DEG C sodium silicate as a binder. The welding electrode coating has the advantages that: 1, slag can be removed easily, and can be completely removed at the positions of a T-type joint fillet weld, butt fillet weld, fillet weld, and the like, and the slag at the downward welding and flat fillet weld positions can be warped automatically, the whole strip falls off, and the slag is not stuck to the edge and the weld surface; 2, there is hardly splashing; 3, arc restarting performance is high, and the time interval limitation is avoided; 4, all position welding can be achieved; 5, the welding seam is fine and bright, and the color of the weld seam is silvery white or golden yellow; and 6, smoke of welding is less and safety and nontoxicity are guaranteed.

Description

A kind of chemical coating of welding electrode

Technical field

The present invention relates to technical field of welding materials, relate in particular to a kind of chemical coating of welding electrode.

Background technology

Current era in scientific and technical develop rapidly, the transformation of self has successfully been finished in welding, and China has become the first in the world welding material big producing country, and few people notice when this process begins, when finish, but it occurs in certain period in the past indeed.We facing to such fact today: it is the engineering process subject of one that welding has developed into multi-door subjects such as logging material, metallurgy, structure, mechanics, electronics from a kind of traditional heat processing technique; 1 ton of steel of the every usefulness of industry such as modern architecture, bridge, shipbuilding will consume about 300 kilograms welding material, and in the general engineering construction, 30% steel need welding, and along with the continuous increase of welding material consumption, the welding rod consumption will be grown simultaneously; According to the statistics of national industrial department, China's welding rod annual requirement reaches 1,500 ten thousand tons, and 1,000,000 tons of actual production quantity not sufficients, the common electrical electrode coating of prior art mostly adopts cellulose as gas making, plasticizer, and extrusion is relatively finer and smoother, easy striking during welding, but when hyperthermia drying, when temperature is spent above 160, the cellulose carbonization, it is narrow-minded that the result causes coating to make, poor surface smoothness, molten more shallow deeply during welding, and the production cost height.

Summary of the invention

The purpose of this invention is to provide a kind of chemical coating of welding electrode, easy striking when welding to overcome existing common electrical electrode coating, but when hyperthermia drying, when temperature is spent above 160, the cellulose carbonization, it is narrow-minded that the result causes coating to make, poor surface smoothness, molten more shallow deeply during welding, and the high deficiency of production cost.

The technical scheme that realizes purpose of the present invention is as follows:

A kind of chemical coating of welding electrode, its raw material by following parts by weight is made: marble 1, titanium dioxide 2, reduction titanium 14.78, cellulose 1, rutile 4, thick mica 3, thin mica 2, white clay 3, feldspar 2.4, middle manganese 15.12; The raw material of above-mentioned parts by weight made powder and mix to make coating.When described chemical coating of welding electrode applies to welding rod, with the described coating concentration waterglass extrusion that is the 38-40 Baume degrees on core wire.

Beneficial effect of the present invention is: 1, easily take off slag, in the T connector angle welding, butt joint corner weld seam and ship shape weld seam equipotential put that to take off slag clean and can stick up certainly at downhand welding, flat fillet weld position slag, and whole piece comes off, and edge and face of weld do not have dry slag; 2, splash the level little; 3, restarting is strong, requires the coating sleeve to be dark straight type, and the degree of depth is more than 3mm, and restarting and easy under the general condition, is not subjected to the restriction in the time interval; 4, all-position welding; 5, appearance of weld and color, the thin Micron Technology of appearance of weld is bright, and the weld seam color is silvery white in color or is golden yellow; 6, weld fumes is few, safety non-toxic.

The specific embodiment

The described chemical coating of welding electrode of the embodiment of the invention, its raw material by following weight is made: marble 1kg, titanium dioxide 2kg, reduction titanium 14.78kg, cellulose 1kg, rutile 4kg, thick mica 3kg, thin mica 2kg, white clay 3kg, feldspar 2.4kg, middle manganese 15.12kg; The raw material of above-mentioned parts by weight made powder and mix to make coating.

When described chemical coating of welding electrode applies to welding rod, with the described coating concentration waterglass extrusion that is the 38-40 Baume degrees on core wire; The chemical coating of welding electrode made from batching of the present invention, carried out the welding procedure test, result of the test shows: electric arc sound is uniform and stable during the welding rod welding, the molten bath is clear and spreadability good, the particle that splashes is tiny, deslag after welding is easy, the appearance of weld smooth and beautiful appearance, easy to operate during upright the overhead welding, show good welding technological properties.

Claims

1. chemical coating of welding electrode, it is characterized in that, make: marble 1kg, titanium dioxide 2kg, reduction titanium 14.78kg, cellulose 1kg, rutile 4kg, thick mica 3kg, thin mica 2kg, white clay 3kg, feldspar 2.4kg, middle manganese 15.12kg by the raw material of following weight.