CN106891108B - Low-grade attapulgite welding rod and preparation method thereof - Google Patents
Low-grade attapulgite welding rod and preparation method thereof Download PDFInfo
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- CN106891108B CN106891108B CN201710176382.7A CN201710176382A CN106891108B CN 106891108 B CN106891108 B CN 106891108B CN 201710176382 A CN201710176382 A CN 201710176382A CN 106891108 B CN106891108 B CN 106891108B
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
- B23K35/3607—Silica or silicates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
- B23K35/404—Coated rods; Coated electrodes
Abstract
The invention discloses a kind of low-grade concave convex rod ground mass welding rod and its manufacturing methods, the mass fraction of each component in the coating of the welding rod are as follows: modified low-grade attapulgite 35-60%, dolomite 12-23%, magnesia 15-20%, quartz sand 8-14%, starch 1%, microcrystalline cellulose 1%, white clay 1-2%, titanium valve 1-2%, iron powder 1-2%；The manufacturing method of the welding rod is: modulating chemical coating of welding electrode first, in accordance with above-mentioned formula, then stirs evenly chemical coating of welding electrode and improvement sodium potassium water glass binder, send to the uniform extrusion of electrode extrusion press on core wire, drying and shaping, as welding rod.The present invention is by being modified the main component after handled as chemical coating of welding electrode to low-grade attapulgite raw ore, not only " turn waste into wealth ", and preparation method is simple, reduce welding rod production cost, welding rod humidity resistance simultaneously using improvement sodium potassium water glass binder preparation is excellent, welding technological properties is good, has good application prospect in welding rod manufacturing field.
Description
Technical field
The present invention relates to welding rod preparation technical field, more particularly, to a kind of low-grade concave convex rod ground mass welding rod and its
Manufacturing method.
Background technique
The fast development of the industries such as modern architecture, bridge, high-speed railway needs great deal of steel, and steel need in engineering construction
Welded mode is wanted to connect, therefore welding rod demand is huge.China has become the first in the world welding material big producer.Greatly
Fibrous gypsum, fluorite, ferroalloy, rutile, titanium dioxide, quartz, mica etc. are all the main basic materials in chemical coating of welding electrode.Into
Since 21 century, electrode coating material rutile, titanium dioxide etc. are short and significantly appreciate, and keep the production cost of welding rod continuous
It improves.
In order to reduce welding rod production cost, welding rod industry is developing novel low-cost coating recipe.With to new
The research and development of type chemical coating of welding electrode auxiliary material deepen continuously, successfully that wollastonite, sericite, montmorillonite, pyrophillite and sepiolite etc. is non-
Metallic ore is applied in electrode coating, and preferable effect is achieved.Attapulgite belongs to silicate mineral, the storage of China's attapulgite
Amount is abundant, and cheap, a large amount of low-grade attapulgites are discarded in recovery process, not only waste resource, but also cause environment
Pollution.Attapulgite has the crystal structure and chemical composition similar with montmorillonite, sepiolite etc., and there is fine and smooth, grease to slide
Feel, water imbibition is strong, wet shape caking property and good, the dry post-shrinkage ratio of plasticity are small, does not show crackle and dispersibility and good fluidity
The features such as, thus attapulgite is applied to the utilization of resources that low-grade attapulgite can be not only promoted in electrode coating, together
When a kind of function admirable, cheap auxiliary material component can be provided for electrode coating, have certain economic benefit and reality
Application value.However, the main component of natural attapulgite raw ore also contains other than silica and magnesia, aluminium oxide
There are the impurity such as the metal oxides such as ferrous oxide, manganese oxide and sulphur phosphorus.Trivalent metal oxide and bivalent metal oxide are molten
Spinelle (MeOMe easy to form in slag2O3), the lattice constant of this spinelle and ferrous oxide is not much different, can be mutually tight
Solid matter column cause de- slag difficult；When sulphur phosphorus content is excessively high simultaneously, weld seam is easy to produce crackle.Therefore, it is necessary to attapulgite into
Row modification, to reduce aluminium oxide, ferrous oxide and sulphur phosphorus content, to meet chemical coating of welding electrode service performance.
Summary of the invention
It is an object of the invention to: a kind of low-grade concave convex rod ground mass welding rod and its manufacturing method are provided, modification is passed through
Low-grade attapulgite is prepared into novel electrode coating material by processing, " turning waste into wealth ", obtains a kind of low in cost, weldering
The excellent low-grade attapulgite welding rod of processing performance is connect, the production cost of welding rod is reduced.
To achieve the above object, the invention adopts the following technical scheme: the quality of each component in the coating of the welding rod
Score are as follows: modified low-grade attapulgite 35-60%, dolomite 12-23%, magnesia 15-20%, quartz sand 8-14%, starch 1%,
Microcrystalline cellulose 1%, white clay 1-2%, titanium valve 1-2%, iron powder 1-2%.
Wherein, the processing method of the low-grade attapulgite of the modification is: the first step, by the low-grade bumps of 80 ~ 200 purposes
Stick stone raw ore is mixed with aqueous acid, and aqueous acid and attapulgite liquid-solid ratio are 2.5 ~ 8mL/g, is added in the electricity with agitating device
It is reacted in thermal reactor, reaction temperature is 60 ~ 95oC, reaction time are 0.5h ~ 4h, are washed after reaction to neutrality, filtering
Drying, is milled to 200 mesh；Second step mixes acidification attapulgite with aqueous alkali, and aqueous alkali is with attapulgite liquid-solid ratio
3 ~ 7mL/g reacts in the electrically heated reactor with agitating device, and reaction temperature is 50 ~ 85oC, reaction time are 1h ~ 3h, instead
To neutrality, filtering drying is milled to 200 mesh, obtains being modified low-grade attapulgite for washing after answering.
Wherein, acid used is one of formic acid, acetic acid, hydrochloric acid, and the concentration of aqueous acid is 1 ~ 20wt%.
Wherein, alkali used is one of sodium hydroxide, potassium hydroxide, ammonium hydroxide, the concentration of aqueous alkali is 0.5 ~
3wt%。
Wherein, the manufacturing method of the welding rod is: chemical coating of welding electrode is modulated first, in accordance with above-mentioned formula, then by welding rod
Coating is stirred evenly with improvement sodium potassium water glass binder, is sent to the uniform extrusion of electrode extrusion press on core wire, drying and shaping, is held
Point polishing, as welding rod finished product.
Wherein, the improvement sodium potassium water glass binder is: using physical method according to matter in sodium potassium water glass binder
Amount ratio adds one of 0.5 ~ 8% methyl acrylate, ethyl acrylate or two kinds mix.
Wherein, the mass ratio of chemical coating of welding electrode and improvement sodium potassium water glass binder is 3:1 ~ 5:1.
The invention has the following advantages that
(1) the modified low-grade attapulgite raw ore of acid, reduces the content of its metal oxide, improves the white of attapulgite
Degree, meets requirement of the coating to apparent whiteness；Low-grade attapulgite raw ore carries out alkali process on the basis of acid is modified, significantly
Sulphur phosphorus content is reduced, welding rod is prepared with good extrusion processing performance and apparent colour using it as electrode coating, does not crack,
It splashes small, easily de- slag meets the welding performance requirement of welding rod.
(2) rich reserves of the low-grade attapulgite raw ore in China, are easy to exploit, cheap, with this modified attapulgite
Masonry is the main constituents of electrode coating material, can largely reduce the production cost of chemical coating of welding electrode, simultaneously
Low-grade attapulgite can be developed to high-valued application direction, be realized " turning waste into wealth ".
Specific embodiment
Further illustrate that technical solution of the invention, these embodiments are not to be construed as pair below with reference to embodiment
The limitation of technical solution.
Embodiment 1: firstly, by 200g attapulgite raw ore 80oAqueous formic acid 1600mL of the C through mass concentration 3%
It is acidified 4h, is washed to neutrality, filtering drying is milled to 200 mesh；Then, 85oC is through 3% sodium hydrate aqueous solution of mass concentration
800mL alkali modification 1h is washed to neutrality, and filtering drying is milled to 200 mesh, obtains attapulgite modified；Then, recessed according to modification
Convex stick stone 35%, dolomite 23%, magnesia 20%, quartz sand 14%, starch 1%, microcrystalline cellulose 1%, white clay 2%, titanium valve 2% and iron powder
2% mass ratio is uniformly mixed, and obtains chemical coating of welding electrode；Finally, by chemical coating of welding electrode and improvement sodium potassium water glass binder according to
Mass ratio 3:1, stirs evenly, and send to the uniform extrusion of electrode extrusion press on core wire, drying and shaping, and endpoint polishing is as welded
Finished product, wherein the improvement sodium potassium water glass binder is by adding 0.5% propylene of its quality in sodium potassium water glass binder
Sour methyl esters is obtained by mixing.
The extrusion function admirable of above-mentioned gained welding rod, measure welding rod deposited metal composition: C 0.06%, Mn are
0.43%, Si 0.25%, P 0.027%, S 0.009% takes off slag rate 82%, spatter loss coefficient 53%, smooth welding joint beauty.
Embodiment 2: firstly, by 200g attapulgite raw ore 95oAqueous formic acid 500mL acid of the C through mass concentration 20%
Change 1h, washs to neutrality, filtering drying is milled to 200 mesh；Then, 50oC is through 3% potassium hydroxide aqueous solution of mass concentration
800mL alkali modification 1h is washed to neutrality, and filtering drying is milled to 200 mesh, obtains attapulgite modified；Then, recessed according to modification
Convex stick stone 53%, dolomite 15%, magnesia 15%, quartz sand 11%, starch 1%, microcrystalline cellulose 1%, white clay 2%, titanium valve 1% and iron powder
1% mass ratio is uniformly mixed, and obtains chemical coating of welding electrode；Finally, by chemical coating of welding electrode and improvement sodium potassium water glass binder according to
Mass ratio 5:1, stirs evenly, and send to the uniform extrusion of electrode extrusion press on core wire, drying and shaping, and endpoint polishing is as welded
Finished product, wherein the improvement sodium potassium water glass binder is by adding 4% acrylic acid of its quality in sodium potassium water glass binder
Ethyl ester is obtained by mixing.
The extrusion better performances of above-mentioned gained welding rod, measure welding rod deposited metal composition: C 0.09%, Mn are
0.41%, Si 0.22%, P 0.019%, S 0.017% takes off slag rate 84%, spatter loss coefficient 58%, smooth welding joint beauty.
Embodiment 3: firstly, by 200g attapulgite raw ore 80oAcetic acid aqueous solution 1200mL of the C through mass concentration 9%
It is acidified 2.5h, is washed to neutrality, filtering drying is milled to 200 mesh；Then, 85oC is through 3% ammonia aqueous solution of mass concentration
800mL alkali modification 3h is washed to neutrality, and filtering drying is milled to 200 mesh, obtains attapulgite modified；Then, recessed according to modification
Convex stick stone 47.5%, dolomite 17.5%, magnesia 17.5%, quartz sand 11%, starch 1%, microcrystalline cellulose 1%, white clay 1.5%, titanium valve
1.5% and iron powder 1.5% mass ratio be uniformly mixed, obtain chemical coating of welding electrode；Finally, by chemical coating of welding electrode and improvement sodium potassium water glass
Glass binder is stirred evenly according to mass ratio 4:1, is sent to the uniform extrusion of electrode extrusion press on core wire, drying and shaping, endpoint is beaten
Mill, as welding rod finished product, wherein the improvement sodium potassium water glass binder is by adding its matter in sodium potassium water glass binder
8% methyl acrylate of amount is obtained by mixing.
The extrusion better performances of above-mentioned gained welding rod, measure welding rod deposited metal composition: C 0.12%, Mn are
0.38%, Si 0.24%, P 0.021%, S 0.03% takes off slag rate 78%, spatter loss coefficient 49%, smooth welding joint beauty.
Embodiment 4: firstly, by 200g attapulgite raw ore 60oAqueous formic acid 1600mL of the C through mass concentration 6%
It is acidified 4h, is washed to neutrality, filtering drying is milled to 200 mesh；Then, 85oC is through 0.5% sodium hydrate aqueous solution of mass concentration
1400mL alkali modification 3h is washed to neutrality, and filtering drying is milled to 200 mesh, obtains attapulgite modified；Then, recessed according to modification
Convex stick stone 60%, dolomite 12%, magnesia 15%, quartz sand 8%, starch 1%, microcrystalline cellulose 1%, white clay 1%, titanium valve 1% and iron powder
1% mass ratio is uniformly mixed, and obtains chemical coating of welding electrode；Finally, by chemical coating of welding electrode and improvement sodium potassium water glass binder according to
Quality 3:1, stirs evenly, and send to the uniform extrusion of electrode extrusion press on core wire, drying and shaping, endpoint polishing, as welding rod
Finished product, wherein the improvement sodium potassium water glass binder is by adding 8% acrylic acid second of its quality in sodium potassium water glass binder
Ester is obtained by mixing.
The extrusion better performances of above-mentioned gained welding rod, measure welding rod deposited metal composition: C 0.12%, Mn are
0.31%, Si 0.19%, P 0.026%, S 0.015% takes off slag rate 88%, spatter loss coefficient 54%, smooth welding joint beauty.
Claims (2)
1. low-grade concave convex rod ground mass welding rod, the mass fraction of each component in the coating of the welding rod are as follows: modification is low-grade recessed
Convex stick stone 35-60%, dolomite 12-23%, magnesia 15-20%, quartz sand 8-14%, starch 1%, microcrystalline cellulose 1%, white clay 1-
2%, titanium valve 1-2%, iron powder 1-2%；It is characterized by: the processing method of the low-grade attapulgite of modification is: the first step, it will
The low-grade attapulgite raw ore of 80 ~ 200 purposes is mixed with aqueous acid, and the liquid-solid ratio of aqueous acid and attapulgite is 2.5 ~
8mL/g reacts in the electrically heated reactor with agitating device, and reaction temperature is 60 ~ 95oC, reaction time are 0.5h ~ 4h, instead
To neutrality, filtering drying is milled to 200 mesh for washing after answering；Second step mixes acidification attapulgite with aqueous alkali, alkali
The liquid-solid ratio of aqueous solution and attapulgite is 3 ~ 7mL/g, is reacted in the electrically heated reactor with agitating device, reaction temperature is
50~85oC, reaction time are 1h ~ 3h, are washed after reaction to neutrality, filtering drying, are milled to 200 mesh, obtain being modified low product
Position attapulgite；Acid used is one of formic acid, acetic acid, hydrochloric acid, and the concentration of aqueous acid is 1 ~ 20wt%；Alkali used is
One of sodium hydroxide, potassium hydroxide, ammonium hydroxide, the concentration of aqueous alkali are 0.5 ~ 3wt%.
2. the preparation method of low-grade concave convex rod ground mass welding rod according to claim 1, the manufacturing method of the welding rod
It is: modulates chemical coating of welding electrode first, in accordance with above-mentioned formula, then by chemical coating of welding electrode and improvement sodium potassium water glass binder stirring
Uniformly, it send to the uniform extrusion of electrode extrusion press on core wire, drying and shaping, endpoint polishing, as welding rod finished product；Its feature exists
Be in the improvement sodium potassium water glass binder: using physical method in sodium potassium water glass binder according to mass ratio addition 0.5 ~
One of 8% methyl acrylate, ethyl acrylate or two kinds mix；Chemical coating of welding electrode and improvement sodium potassium water glass
The mass ratio of binder is 3:1 ~ 5:1.
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| CN107196469A (en) * | 2017-07-14 | 2017-09-22 | 南陵良力电动工具有限责任公司 | Electric machine iron core and its preparation technology with excellent stability |
| CN107196470B (en) * | 2017-07-14 | 2020-04-14 | 芜湖乾凯材料科技有限公司 | Motor iron core with excellent mechanical property and preparation process thereof |
| CN107804854B (en) * | 2017-11-27 | 2020-03-17 | 中国科学院兰州化学物理研究所盱眙凹土应用技术研发中心 | Method for preparing copper silicate nanotube by using low-grade attapulgite clay |
| CN110666389B (en) * | 2019-10-18 | 2021-07-02 | 郑州机械研究所有限公司 | Fiber-toughened tungsten carbide welding rod |
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Address after: 211700 Dongfang Road, Xuyi County, Huaian, Jiangsu Province, No. 3 Patentee after: Xuyi Aotu energy and environmental protection materials R & D Center Address before: 211700 Dongfang Road, Xuyi County, Huaian, Jiangsu Province, No. 3 Patentee before: XUYI ATTAPULGITE RESEARCH & DEVELOPMENT CENTER OF GUANGZHOU INSTITUTE OF ENERGY CONVERSION, CHINESE ACADEMY OF SCIENCES |
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