Nickel Chromium AlloyNi80cr20 Hlau tiaj tus Cov Khoom Kub
Ni80Cr20 yog ib qho nickel-chromium alloy (NiCr alloy). Nws tuaj yeem tsim cov txheej txheem sib txuas zoo nrog kev siv tshuab zoo heev, kev ua hluav taws xob thiab kev tiv thaiv oxidation kub txog li 1800 degrees F (980 degrees C), thiab nws tuav lub neej ua haujlwm zoo dua piv rau Iron chromium alumium alloys. Nws qhia txog cua sov exothermic thaum siv.
Daim Ntawv Thov:
Cov ntawv thov ib txwm muaj rau Ni80Cr20 yog hluav taws xobcov khoom cua sovs nyob rau hauv cov khoom siv hauv tsev, cov cub tawg kev lag luam thiab cov resistors (wirewound resistors, hlau zaj duab xis resistors), flat irons, ironing tshuab, dej kub, yas molding tuag, soldering irons, hlau sheathed tubular ntsiab lus thiab cartridge ntsiab lus. Ib txwm muaj composition%
| C | P | S | Mn | Si | Cr | Ni | Al | Fe | Lwm yam |
| Qhov siab tshaj plaws | |||||||||
| 0.03 | 0.02 | 0.015 | 0.60 | 0.75~1.60 | 20.0~23.0 | Bal. | Siab tshaj plaws 0.50 | Siab tshaj 1.0 | - |
Cov khoom siv kho tshuab ib txwm muaj (1.0 hli)
| Lub zog tawm los | Lub zog tensile | Kev ntev |
| Mpa | Mpa | % |
| 420 | 810 | 30 |
Cov khoom siv lub cev ib txwm muaj
| Qhov Ceev (g/cm3) | 8.4 |
| Kev tiv taus hluav taws xob ntawm 20ºC (mm2 / m) | 1.09 |
| Cov coefficient ntawm kev coj ua ntawm 20ºC (WmK) | 15 |
| Coefficient ntawm thermal expansion | |
| Kub | Cov Coefficient ntawm Thermal Expansion x10-6 / ºC |
| 20 ºC - 1000ºC | 18 |
| Lub peev xwm cua sov tshwj xeeb | |
| Kub | 20ºC |
| J/gK | 0.46 |
| Qhov kub yaj (ºC) | 1400 |
| Qhov kub ua haujlwm tas mus li hauv huab cua (ºC) | 1200 |
| Cov khoom sib nqus | tsis yog hlau nplaum |
| Cov Yam Kub thiab Txias ntawm Cov Hluav Taws Xob Resistivity | |||||
| 20ºC | 100ºC | 200ºC | 300ºC | 400ºC | 600ºC |
| 1 | 1.006 | 1.012 | 1.018 | 1.025 | 1.018 |
| 700ºC | 800ºC | 900ºC | 1000ºC | 1100ºC | 1300ºC |
| 1.01 | 1.008 | 1.01 | 1.014 | 1.021 | - |
Hom kev muab khoom
| Lub Npe Alloys | Hom | Qhov Loj | ||
| Ni80Cr20W | Hlau | D = 0.03 hli ~ 8 hli | ||
| Ni80Cr20R | Daim kab xev | W = 0.4 ~ 40 | T = 0.03 ~ 2.9 hli | |
| Ni80Cr20S | Sawb | W = 8 ~ 250 hli | T = 0.1 ~ 3.0 | |
| Ni80Cr20F | Ntawv ci | W = 6 ~ 120 hli | T = 0.003 ~ 0.1 | |
| Ni80Cr20B | Bar | Dia = 8 ~ 100 hli | L = 50 ~ 1000 | |
150 0000 2421