CN85107951A - High efficiency low dust iron powder welding electrode - Google Patents
High efficiency low dust iron powder welding electrode Download PDFInfo
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- CN85107951A CN85107951A CN 85107951 CN85107951A CN85107951A CN 85107951 A CN85107951 A CN 85107951A CN 85107951 CN85107951 CN 85107951 CN 85107951 A CN85107951 A CN 85107951A CN 85107951 A CN85107951 A CN 85107951A
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- welding
- iron powder
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- welding rod
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Abstract
The invention belongs to welding rod.Mainly be applicable to welding low-carbon steel or ordinary low-alloy steel.The chemical composition of electrode coating is TiO
215～35%, CaCO
3, MgCO
3, BaCO
3Deng in one or more sums less than 10%, Fe-Mn2～10%, SiO
2＜10%, Al
2O
3＜10%, ZrO
2＜7%, one or both sums among Fe-Ti and the Fe-Si are less than 10%, iron powder＞40%; Core wire is mild steel or ordinary low-alloy steel.Adopt the welding of this welding rod, do not produce the fluoride toxic gas, the few and welding technological properties of fume amount is good etc.Can adopt two kinds of power supplys of alternating current-direct current, weld in downhand welding or flat fillet weld position.
Description
The invention belongs to welding rod.Mainly be applicable to welding low-carbon steel or ordinary low-alloy steel.
The flue dust that is produced when adopting the welding rod welding is harmful to health.The principal element that influences powder amount during welding is welding conditions and electrode coating composition.Under the constant condition of welding conditions, the main path that reduces powder amount is the gas making composition that reduces in the coating.Along with the gas making composition, as the minimizing of carbonate, fluoride, organic matter etc., the weld fumes amount also reduces.But, reduce the composition that produces gas in the coating separately, will cause the slag physical deterioration, make it to obtain suitable viscosity, flowability and surface tension etc., thereby welding technological properties is degenerated; In addition, also because of the gas deficiency, protect insufficient and weld defects such as production pore to molten drop and molten bath, even cause that weld properties obviously descends.
The low welding rod of a kind of powder amount (openly speciallyying permit clear 50-56339) had once been studied by Japan.Its covering of an electrode composition (percentage by weight) is as follows: metal fluoride 1～8%, TiO
236～63%, SiO
23～17%, CaCO
3, MgCO
3In one or both 10～31%, Fe-Mn3～18%, iron powder is less than 34%.Though the flue dust generating capacity of this welding rod has reduction, fume amount is still than higher; And contain the fluoride that can produce toxic gas in the coating.
The objective of the invention is to further reduce the flue dust generating capacity of welding rod, eliminate poisonous fluoride gas, and improve welding efficiency.
According to above-mentioned intention, for eliminating toxic gas, the present invention does not add metal fluoride in electrode coating; For further reducing powder amount, the addition of carbonate is limited in below 10%; In order to improve welding efficiency, in coating, added the iron powder more than 40%.For this reason, make a kind of novel high efficiency low dust iron powder welding electrode.
The concrete chemical composition of electrode coating of the present invention (percentage by weight) is as follows:
TiO
215～35%, CaCO
3, MgCO
3, BaCO
3In one or more sums less than 10%, Fe-Mn2～10%, SiO
2＜10%, Al
2O
3＜10%, ZrO
2＜7%, one or both sums among Fe-Ti and the Fe-Si are less than 10%, and iron powder＞40% also adds plasticizer such as an amount of sodium alginate, calcium alginate in coating.Adopt waterglass that above-mentioned composition scope coating is coated on mild steel or the ordinary low-alloy steel core wire, promptly make welding rod of the present invention.
When adopting welding rod of the present invention to weld, its fume amount can be reduced to below the 5 gram/kilograms, and the deposition efficiency of welding rod can reach more than 155%, adds to shorten the auxiliary labor time, and the welding labor productivity is enhanced about more than once.
The present invention has also carried out number of research projects to the welding technological properties of welding rod, and the result shows, splashes for a short time by changing compositions of surfacing metal, this welding rod also being had, and it is easy to take off slag, characteristics such as the attractive in appearance and restarting excellent performance of appearance of weld.This welding rod can adopt two kinds of power supplys of alternating current-direct current, welds in downhand welding or flat fillet weld position.
Embodiment
According to four kinds of listed electrode coating compositions of table 1, add an amount of bonding agent, extrusion is at H
08On the A core wire, make four kinds of welding rods, and on the mild steel steel plate, weld respectively.The result shows that the general welding rod of fume amount significantly reduces when welding, and welding technological properties is good, and labor productivity obviously improves.
The electrode coating chemical composition (weight %) of table 1, embodiment
*Annotate: other refers to K
2O, Na
2O etc.
Claims (2)
1, the low iron powder electrode of a kind of powder amount is characterized in that the chemical composition (percentage by weight) of electrode coating is TiO
215～35%, CaCO
3, MgCO
3, BaCO
3Deng in one or more sums less than 10%, Fe-Mn2-10%, SiO
2＜10%, Al
2O
3＜10%, ZrO
2＜7%, one or both sums among Fe-Ti and the Fe-Si are less than 10%, iron powder＞40%.
2, welding rod according to claim 1 is characterized in that adding in the medicinal powder plasticizer such as an amount of sodium alginate, calcium alginate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85107951A CN85107951B (en) | 1985-10-30 | 1985-10-30 | High-efficient low-dust iron powder welding rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85107951A CN85107951B (en) | 1985-10-30 | 1985-10-30 | High-efficient low-dust iron powder welding rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85107951A true CN85107951A (en) | 1987-07-08 |
| CN85107951B CN85107951B (en) | 1988-01-06 |
Family
ID=4795840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85107951A Expired CN85107951B (en) | 1985-10-30 | 1985-10-30 | High-efficient low-dust iron powder welding rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85107951B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8294065B2 (en) | 2006-07-05 | 2012-10-23 | Nippon Steel Corporation | Stainless steel wire with flux core for welding zinc coated steel sheets |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1323799C (en) * | 2005-01-21 | 2007-07-04 | 中国船舶重工集团公司第七二五研究所 | Low alloy high-toughness electric welding rod containing copper |
-
1985
- 1985-10-30 CN CN85107951A patent/CN85107951B/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8294065B2 (en) | 2006-07-05 | 2012-10-23 | Nippon Steel Corporation | Stainless steel wire with flux core for welding zinc coated steel sheets |
| CN101484270B (en) * | 2006-07-05 | 2012-12-26 | 新日本制铁株式会社 | Stainless steel wire with flux core for welding zinc coated steel sheets |
Also Published As
| Publication number | Publication date |
|---|---|
| CN85107951B (en) | 1988-01-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CE01 | Termination of patent right |