SU213071A1 - Method of alloying steels and alloys - Google Patents
Method of alloying steels and alloysInfo
- Publication number
- SU213071A1 SU213071A1 SU6601071552A SU1071552A SU213071A1 SU 213071 A1 SU213071 A1 SU 213071A1 SU 6601071552 A SU6601071552 A SU 6601071552A SU 1071552 A SU1071552 A SU 1071552A SU 213071 A1 SU213071 A1 SU 213071A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- nitrogen
- alloys
- metal
- plasma
- alloying steels
- Prior art date
Links
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- Treatment Of Steel In Its Molten State (AREA)
- Manufacture And Refinement Of Metals (AREA)
Description
Легирование стали и сплавов азотом в насто щее врем осуществл ют путем присадки в жидкий металл азотированного феррохрома или ферромарганца - весьма дорогих ферросплавов .Doping of steel and alloys with nitrogen is currently carried out by adding nitrated ferrochrome or ferromanganese, a very expensive ferroalloy, to a liquid metal.
Повысить концентрацию азота ВСтали выше стандартной растворимости при прин том способе выплавки не удаетс .It is not possible to increase the nitrogen concentration above the standard solubility in the conventional smelting process.
В предложенном способе легирование стали азотом осуществл ют одновременио с переплавом ее в плазменно-дуговой печи аргонио-азотиой или чисто азотной плазмой.In the proposed method, the doping of steel with nitrogen is carried out simultaneously with its remelting in a plasma-arc furnace using argonio-nitrogen or pure nitrogen plasma.
Если требуютс сравнительно небольшие концентрации азота в металле, переплав производ т аргонно-азотной плазмой. При необходимости получени больших концентраций азота в металле, сталь переплавл ют чистой азотной плазмой при повышенном давлении газа.If relatively low concentrations of nitrogen in the metal are required, the remelting is produced by argon-nitrogen plasma. If it is necessary to obtain high concentrations of nitrogen in the metal, the steel is remelted with pure nitrogen plasma at elevated gas pressure.
Насыщение металла азотом происходит с большой скоростью, чему способствуют длительное пребывание металла и жидком состо нии в трех стади х процесса: на оплавленном торце штанги, в капле и в ванне и высокоеThe metal is saturated with nitrogen at high speed, which is facilitated by the prolonged stay of the metal and the liquid state in three stages of the process: at the melted end of the rod, in the drop and in the bath and high
.значеиие удельной поверхности жидкого ме. талла..the value of the specific surface of the liquid. talla.
При направленном характере затвердеванн металла в водоохлаждаемом кристаллизаторе и при повышенном давлении газа, несмотр на большое содержание азота в металле, слиток, получают плотным, без газовых раковин. Кроме того, при таком способе плавки получают металл чистый по оксидным и сульфидным включени м с благопри тной микроструктурой слитка дл дальнейшей пластической обработки.With the directed nature of the hardened metal in a water-cooled crystallizer and with an increased pressure of gas, despite the high content of nitrogen in the metal, the ingot is obtained dense, without gas pockets. In addition, with this method of smelting, the metal is pure in oxide and sulphide inclusions with a favorable microstructure of the ingot for further plastic processing.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU6601071552A SU213071A1 (en) | 1966-04-20 | 1966-04-20 | Method of alloying steels and alloys |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU6601071552A SU213071A1 (en) | 1966-04-20 | 1966-04-20 | Method of alloying steels and alloys |
Publications (1)
Publication Number | Publication Date |
---|---|
SU213071A1 true SU213071A1 (en) | 1977-12-05 |
Family
ID=20439283
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU6601071552A SU213071A1 (en) | 1966-04-20 | 1966-04-20 | Method of alloying steels and alloys |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU213071A1 (en) |
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1966
- 1966-04-20 SU SU6601071552A patent/SU213071A1/en active
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