SU449945A1 - The method of heat treatment of chromel wire - Google Patents
The method of heat treatment of chromel wireInfo
- Publication number
- SU449945A1 SU449945A1 SU1894238A SU1894238A SU449945A1 SU 449945 A1 SU449945 A1 SU 449945A1 SU 1894238 A SU1894238 A SU 1894238A SU 1894238 A SU1894238 A SU 1894238A SU 449945 A1 SU449945 A1 SU 449945A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- heat treatment
- chromel wire
- temperature annealing
- chromel
- wire
- Prior art date
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- Measuring Temperature Or Quantity Of Heat (AREA)
Description
1one
Мзобретение относитс к металлургии, в частности к снособу термической обработки термоэлектродных никельхромовых снлавов, примен емых дл термопар.The invention relates to metallurgy, in particular, to the method of thermal treatment of thermoelectrode nickel chrome metals used in thermocouples.
Известен снособ термической обработки хромелевой проволоки, заключающийс в высокотемпературном отжиге при 700-750°С и низкотемпературном - при 350-500°С в течение 10-50 ч.A known method for thermal treatment of chromel wire, consisting in high-temperature annealing at 700-750 ° C and low-temperature at 350-500 ° C for 10-50 hours.
Дл новышени стабильности при высоких температурах и увеличени срока службы термоэлектродов, предлагаетс высокотемпературный отжиг проводить при 1100-1200°С, причем его можно проводить в течение 0,5- 1 ч в воздушной среде и затем в течение 5- 15 ч в вакууме мм. рт. ст.To increase the stability at high temperatures and increase the service life of thermoelectrodes, it is proposed to carry out high-temperature annealing at 1100-1200 ° C, and it can be performed for 0.5-1 h in air and then for 5-15 h in vacuum mm. Hg Art.
При осуществлении способа вначале провод т в воздушной среде в течение 0,5-1 ч при 1100-1200°С, затем - в вакууме 1-10- -1 10- мм рт. ст. в течение 5-15 ч при той же температуре; далее провод т низкотемпературный отжиг при 350-500°С.When implementing the method, it is first carried out in air for 0.5-1 hours at 1100-1200 ° C, then in a vacuum of 1-10 -1 -1 10 mm Hg. Art. for 5-15 hours at the same temperature; Next, low-temperature annealing is carried out at 350-500 ° C.
После выдержки 50 ч при 1200°С изменение термоэлектродвижущей силы в проволоке диаметром 1,2 мм сплава хромель, обработанной описываемым способом, составл ет 2,2°С и 4°С через 100 ч.After holding for 50 hours at 1200 ° C, the change in the thermoelectromotive force in a wire with a diameter of 1.2 mm of chromel alloy treated in this way is 2.2 ° C and 4 ° C after 100 hours.
Предмет изобретени Subject invention
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1894238A SU449945A1 (en) | 1973-03-09 | 1973-03-09 | The method of heat treatment of chromel wire |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1894238A SU449945A1 (en) | 1973-03-09 | 1973-03-09 | The method of heat treatment of chromel wire |
Publications (1)
Publication Number | Publication Date |
---|---|
SU449945A1 true SU449945A1 (en) | 1974-11-15 |
Family
ID=20545658
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU1894238A SU449945A1 (en) | 1973-03-09 | 1973-03-09 | The method of heat treatment of chromel wire |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU449945A1 (en) |
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1973
- 1973-03-09 SU SU1894238A patent/SU449945A1/en active
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