CN1209460A - Gypsum deoxygenating agent - Google Patents
Gypsum deoxygenating agent Download PDFInfo
- Publication number
- CN1209460A CN1209460A CN 98113630 CN98113630A CN1209460A CN 1209460 A CN1209460 A CN 1209460A CN 98113630 CN98113630 CN 98113630 CN 98113630 A CN98113630 A CN 98113630A CN 1209460 A CN1209460 A CN 1209460A
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- China
- Prior art keywords
- gypsum
- vacuum annealing
- need
- agent
- deoxidizing agent
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- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
The present invention relates to a gypsum deoxidizing agent which is used for vacuum annealing process of manganese steel wire rod and preventing metal material from corroding. The main component of said deoxidizing agent is calcium sulfate, and by adopting said gypsum deodizing agent in vacuum annealing process for manganese steel wire rod it has no need of sealing vacuum annealing furnace with rubber or asbestos, no need of radiating with water, pumping vacuum, charging nitrogen gas and balancing furnace temp. with fan motor, and can automatically make high-temp. deoxidization, automatically discharge filthy gas, and the annealed wirerod surface has no oxide layer, does not decarbonize, and is smooth as mirror. The use of said deoxidizing agent can save energy soure, reduce production cost, and can raise product quality.
Description
The invention discloses and a kind ofly be applied to vacuum annealing and prevent metal steel corrosive gypsum deoxygenating agent.
In the drawing of metal steel, cutting process, often need heat-treat, particularly to carry out anneal; to reduce steel hardness; eliminate internal stress, increase plasticity, make processing such as its suitable drawing, cutting; in the technological process that draws gas shield metal welding wire; need will be thicker the manganese steel wire rod repeatedly stretch and make the filament welding rod, every through one-off drawing, make the wire rod surface hardening; produce stress, need just can enter down stretching process one through anneal.The annealing process of the welding wire of process gas protection at present is to carry out in the well vacuum annealing furnace; traditional technology need vacuumize; inflated with nitrogen; but because technical qualification are limit; be difficult for reaching perfect vacuum; and weak effect, the cost height easily causes the welding wire surface oxidation; decarburization; rubber seal or asbestos seal ring are taked in the stove sealing; easily aged deterioration under hot conditions produces gas leakage, sealing-ring bottom water-cooled; cause the furnace temperature imbalance easily; and adopting the thermal equilibrium fan motor, effect is not good enough again, adorns workpiece less very easily to leak gas; annealing back welding wire surface has a large amount of oxide skins; add to the difficulties to next process, not only increase the steel loss, and each road wire-drawing process broken end is increased; the percentage of A-class goods descends, and scrap rate increases.
The present invention is directed to the problem that the vacuum annealing of above-mentioned gas protection welding wire exists; exploratory development repeatedly; the test textual criticism; finally find that a kind of stability is high, anti-corrosion capability is strong, and effect is lasting; can hinder oxidation on metal surface and the gypsum deoxygenating agent that delays oxidation; thereby reach welding wire surface non-oxidation layer, not decarburization, free from corrosion purpose.
The main component of gypsum deoxygenating agent is a calcium sulfate, uses with the form of two water things and half water thing usually, and molecular formula is CaSO
42H
2O and CaSO
41/2H
2O is commonly called as the plaster stone and the plaster of Paris, proterties: white powder, plaster stone density 2.32g/cm
3, fusing point 1350-1370 ℃, plaster of Paris density 2.946g/cm
3, 1450 ℃ of fusing points have very strong water-absorbent, make peptizer and use in food-processing.
The phlogistication of gypsum mainly shows and can make the metallic surface antioxidant anticorrosive, its water absorbability is very strong, and hydrate is than indissoluble, attached to the metal steel surface, very easily form a kind of closeer tectum in the metallic surface, its role is to a metal and keep apart as far as possible, suppressed metallic corrosion effectively, thereby played the purpose of corrosion protection with causing or promote various ambient conditionss of corrosive such as oxygen, moisture.
Gypsum is done the application of oxygen scavenger in the vacuum annealing of process gas protection welding wire; specifically can adopt well vacuum stove (top seal) to carry out manganese steel welding wire production test; vacuum oven model: RJJ-120KW; 800 kilograms of stove dress welding wires; adopting weight percent content is that 94.38% gypsum deoxygenating agent is put into 1 kilogram, places 2 kilograms of gypsum deoxygenating agents at stove seal place.Under 750 ℃ of standard temperatures, anneal.After annealing finishes, welding wire surface non-oxidation layer, not decarburization, smooth and bright like a mirror.Do not vacuumize in the Total Test process, inflated with nitrogen does not need water-cooled, and the welding wire quality is all qualified.
Adopt gypsum deoxygenating agent process gas protection welding wire, vacuum annealing furnace need not rubber seal or asbestos seal, and uses water-cooled, also need not to vacuumize, inflated with nitrogen, more need not fan motor balance furnace temperature.Automatically high temperature deoxygenation in the annealing process, automatically get rid of dirty gas, after the welding wire vacuum annealing, because welding wire surface non-oxidation layer, not decarburization, smooth and bright like a mirror, utilize decorticator to divest welding wire top layer oxide skin operation together down and can cancel, last one wire-drawing process water tank drawbench oxide skin throw out reduces by 95%, and finished product welding wire surface foaming summer and autumn rate can reduce by 80%.
Adopt this oxygen scavenger, can economize on the use of funds, save energy reduces cost, and improves the quality, and meets good quality and high output, low consumed principle, and economic and social benefits are obvious, and popularizing application prospect is wide.
Claims (1)
1. one kind is applied to vacuum annealing and prevents metal steel corrosive gypsum deoxygenating agent, it is characterized in that main component is a calcium sulfate, uses with two water things and half water thing form, and molecular formula is CaSO
42H
2O and CaSO
41/2H
2O.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98113630A CN1058527C (en) | 1998-07-09 | 1998-07-09 | Gypsum deoxygenating agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98113630A CN1058527C (en) | 1998-07-09 | 1998-07-09 | Gypsum deoxygenating agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1209460A true CN1209460A (en) | 1999-03-03 |
| CN1058527C CN1058527C (en) | 2000-11-15 |
Family
ID=5223339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98113630A Expired - Fee Related CN1058527C (en) | 1998-07-09 | 1998-07-09 | Gypsum deoxygenating agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1058527C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111673899A (en) * | 2020-06-18 | 2020-09-18 | 远科秦皇岛节能环保科技开发有限公司 | Protection method for gas turbine blade tenon |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2647333B2 (en) * | 1993-06-03 | 1997-08-27 | 新日本製鐵株式会社 | Annealing separator for electrical steel sheet suitable for steel sheet surface smoothing and low iron loss |
| JP3091088B2 (en) * | 1994-07-21 | 2000-09-25 | 新日本製鐵株式会社 | Annealing separation agent having extremely excellent reactivity and method of using the same |
-
1998
- 1998-07-09 CN CN98113630A patent/CN1058527C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111673899A (en) * | 2020-06-18 | 2020-09-18 | 远科秦皇岛节能环保科技开发有限公司 | Protection method for gas turbine blade tenon |
| CN111673899B (en) * | 2020-06-18 | 2022-01-25 | 远科秦皇岛节能环保科技开发有限公司 | Protection method for gas turbine blade tenon |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1058527C (en) | 2000-11-15 |
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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 | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Applicant after: Zhao Xiantao Applicant before: Wang Laohu Applicant before: Yu Yuansheng |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: WANG LAOHU; YU YUANSHENG TO: ZHAO XIANTAO |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CI01 | Correction of invention patent gazette |
Correction item: Inventor Correct: Zhao Xiantao False: Wang Laohu|Yu Yuansheng Number: 46 Page: 171 Volume: 16 |
|
| CI03 | Correction of invention patent |
Correction item: Inventor Correct: Zhao Xiantao False: Wang Laohu|Yu Yuansheng Number: 46 Page: The title page Volume: 16 |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |