SU535355A1 - Method of smelting charge billet - Google Patents
Method of smelting charge billetInfo
- Publication number
- SU535355A1 SU535355A1 SU2301998A SU2301998A SU535355A1 SU 535355 A1 SU535355 A1 SU 535355A1 SU 2301998 A SU2301998 A SU 2301998A SU 2301998 A SU2301998 A SU 2301998A SU 535355 A1 SU535355 A1 SU 535355A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- melting
- slag
- smelting charge
- scale
- billet
- Prior art date
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Description
(54) СПОСОБ ВЫПЛАВКИ ШИХТОВОЙ ЗАГОТОВКИ(54) METHOD OF MELTING THE SILES SCHEDULE
ски полное Восстановление огкалины, но и легироваиие .металлического расплава кремнием в количестве 1-2 вес.complete restoration of oglin, but also the melting of metal melt with silicon in the amount of 1-2 weight.
углеродомcarbon
в (количестве 0,5-0,8 вес. %. -В результате очередные порции окалины, присаживаемые с подвалкой, восстанавливаютс не только твердым восстановителем - карбидом кремни , :но и кремнием и углеродом, растворен . ным -в ЖИД1КОМ металле, на границе раздела окисной и металлической фаз.(amount 0.5-0.8 wt.%. - As a result, the next portions of scale, which are sown with a basement, are reduced not only by a solid reducing agent, silicon carbide, but also by silicon and carbon, dissolved. in the LID metal, on boundary of the oxide and metal phases.
Кро.ме того, iBbicoKoe содержание жарбида кремни -В завадке обеспечивает достаточную электропроводимость шихты, что .позвол ет стабилизир01вать электрический режим и увеличить скорость проплавлени окалины в завалке.Moreover, the iBbicoKoe content of a silicon carbide — At the top of the table, ensures sufficient electrical conductivity of the charge, which makes it possible to stabilize the electrical regime and increase the rate of melting of the scale in the filling.
Количество восстановител в подвалке определ етс стехиометрически1М соотношением, вытекающим из реа;кции восстановлени окалины карб:идо,м кремни с учетом непроизводительных потерь восстановител , например, в системе газоотсоса.The amount of reducing agent in the tumbling is determined by the stoichiometric 1M ratio resulting from the reduction of carb: datum scale, silicon, m, taking into account the waste of the reducing agent, for example, in a suction unit.
В (Конце .плавки дл об,разо;вани жидкоподвижного шлака последний следует раскиСл ть .карбидом кремни сов.местно с известью , т. 1к. присад-ка извести снижает тугоплавкость кислого шла1ка, насыщенного кремнеземом .At the end of the process, the liquid-moving slag was broken up; the latter should be squeezed in conjunction with lime, i.k., the lime additive reduces the refractoriness of the acid slag, saturated with silica.
Предложенное количество смеси, вводимое ,в шлак периода расплавлени , а такжеThe proposed amount of mixture injected into the slag of the melting period, as well as
1П;редложенное соотношение коа понентов в ней позвол ют добитьс восстановлени не только всего вольфрама из шлака, но и таких трудновосстановИМых окислов, ,как окись ва.надн и О1кись хро;ма. Это происходит за счет повышени реакционной способности шлака при введении IB .него извести и избытке активного восстановител .1P; the proposed ratio of the components in it allows one to achieve the reduction not only of tungsten from slag, but also of such hard-to-reduce oxides, as oxides, and oxide and chromium. This is due to the increased reactivity of the slag with the introduction of IB. Of more lime and an excess of active reducing agent.
Пример. В 5-тонной дуговой электропечи выплавили три плавки шихтовой заготовки нз окалины быстрорежущей стали Р6М5. Завал1ка состо ла из 2000 кг окалины и 600 кг порошка карбида кремни . Через 35 мин после начала плавлени осуществл ли первую подвалку (1200 кг окалины и 220 кг карбида кремни ), а еще через 30 мин - вторую подвалку (800 кг акалины и 150 кг карбида кремни ). Шлак периода расплавлени в течение 20-25 мин раокисл ли смесью из карбида и известн (30% SiC, 70% СаО) в количестве 50 кг на тонну садки. Обща . продолжительность плавки составила в среднем 1 ч 55 мин. Металл выпустили Б ковш при 1500° С.Example. In the 5-ton electric arc furnace, three melts of the charge material were melted out of the scale of high-speed steel Р6М5. The filling consisted of 2000 kg of dross and 600 kg of silicon carbide powder. 35 minutes after the start of melting, the first basement was carried out (1200 kg of dross and 220 kg of silicon carbide), and another 30 minutes later the second basement was carried out (800 kg of alkaline and 150 kg of silicon carbide). The slag of the melting period was dissolved for 20-25 minutes with a mixture of carbide and limestone (30% SiC, 70% CaO) in an amount of 50 kg per ton of shed. General melting time averaged 1 h 55 min. The metal is released B bucket at 1500 ° C.
|В таблице приведены данные, полученные при плавке шихтовой заготовки из окалины быстрорежущей стали Р6М5 .предлагаемым (верхн строчка) и известным (нижн ) способами (было проведено ,по три плавки).| The table shows the data obtained during the smelting of the charge billet from the scale of high-speed steel R6M5. Proposed (top line) and known (bottom) methods (it was carried out, three melts).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU2301998A SU535355A1 (en) | 1975-12-23 | 1975-12-23 | Method of smelting charge billet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU2301998A SU535355A1 (en) | 1975-12-23 | 1975-12-23 | Method of smelting charge billet |
Publications (1)
Publication Number | Publication Date |
---|---|
SU535355A1 true SU535355A1 (en) | 1976-11-15 |
Family
ID=20641512
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU2301998A SU535355A1 (en) | 1975-12-23 | 1975-12-23 | Method of smelting charge billet |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU535355A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1044623C (en) * | 1995-10-26 | 1999-08-11 | 范化卿 | Method for smelting quick-speed steel by quick-speed steel abrasive dust and quick-speed steel iron oxide |
CN110273096A (en) * | 2019-06-28 | 2019-09-24 | 鞍钢股份有限公司 | SiC/M2 powder high-speed steel composite material and preparation method thereof |
-
1975
- 1975-12-23 SU SU2301998A patent/SU535355A1/en active
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1044623C (en) * | 1995-10-26 | 1999-08-11 | 范化卿 | Method for smelting quick-speed steel by quick-speed steel abrasive dust and quick-speed steel iron oxide |
CN110273096A (en) * | 2019-06-28 | 2019-09-24 | 鞍钢股份有限公司 | SiC/M2 powder high-speed steel composite material and preparation method thereof |
CN110273096B (en) * | 2019-06-28 | 2021-01-08 | 鞍钢股份有限公司 | SiC/M2 powder high-speed steel composite material and preparation method thereof |
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