Ni70Cr30jẹ nickel-chromium alloy (NiCr alloy) ti a ṣe afihan nipasẹ resistance ti o ga, resistance ifoyina ti o dara ati iduroṣinṣin fọọmu ti o dara pupọ. O dara fun lilo ni awọn iwọn otutu to 1250 ° C, ati mu igbesi aye iṣẹ ti o ga julọ ni akawe si awọn ohun elo alumọni chromium Iron.
Awọn ohun elo aṣoju funNi70Cr30jẹ awọn eroja alapapo ina ni awọn ohun elo ile, awọn ileru ile-iṣẹ ati awọn resistors (awọn resistors wirewound, awọn resistors fiimu irin), awọn irin alapin, awọn ẹrọ ironing, awọn igbona omi, mimu ṣiṣu ku, awọn irin tita, awọn eroja tubular sheathed irin ati awọn eroja katiriji.
Akopọ deede%
C | P | S | Mn | Si | Cr | Ni | Al | Fe | Omiiran |
O pọju | |||||||||
0.03 | 0.02 | 0.015 | 0.60 | 0.75 ~ 1.60 | 28.0 ~ 31.0 | Bal. | O pọju 0.50 | O pọju 1.0 | - |
Awọn ohun-ini Aṣoju ti ara
Ìwúwo (g/cm3) | 8.1 |
Agbara itanna ni 20ºC(mm2/m) | 1.18 |
olùsọdipúpọ ti gbona imugboroosi | |
Iwọn otutu | Olusọdipúpọ ti Imugboroosi Gbona x10-6/ºC |
20ºC-1000ºC | 17 |
Specific ooru agbara | |
Iwọn otutu | 20ºC |
J/gK | 0.46 |
Ibi yo (ºC) | 1380 |
Iwọn otutu iṣiṣẹ ti o pọ julọ ni afẹfẹ (ºC) | 1250 |
Awọn ohun-ini oofa | ti kii ṣe oofa |
Awọn Okunfa otutu ti Itanna 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 | - |
Ara ti ipese
Alloys Name | Iru | Iwọn | ||
Ni70Cr30W | Waya | D=0.03mm~8mm | ||
Ni70Cr30R | Ribbon | W=0.4~40 | T = 0.03 ~ 2.9mm | |
Ni70Cr30S | Sisọ | W=8~250mm | T = 0.1 ~ 3.0 | |
Ni70Cr30F | Fọọmu | W=6~120mm | T = 0.003 ~ 0.1 | |
Ni70Cr30B | Pẹpẹ | Dia=8~100mm | L=50~1000 |