Gwifren drydanol sy'n gwrthsefyll gwres aloi FeCrAl A1 APM AF D
Ynglŷn â Gwifren Gwresogi Gwrthiant:
Ni yw'r gwneuthurwr proffesiynol mwyaf o aloi gwresogi gwrthiant yn Tsieina, gan arbenigo mewn gwifren Ferro-Chrome (Fe-Cr-AL), gwifren Nickel-Chrome (Nichrome), gwifren Copr Nickel (Constantan), gwifren dur di-staen a chynhyrchion cysylltiedig mewn aloion wedi'u teilwra i fodloni gofynion penodol cwsmeriaid.
Manylion maint
| Enw'r cynnyrch | Ystod maint |
| Gwifren tynnu oer | Diamedr 0.03-7.5mm |
| Gwialen wifren wedi'i rholio'n boeth | Diamedr 8.0-12mm |
| Rhuban | Trwch 0.05-0.35mm |
| Lled 0.5.0-3.5mm | |
| Strip rholio oer | Trwch 0.5-2.5mm |
| Lled 5.0-40mm | |
| stribed rholio poeth | Trwch 4-6mm |
| Lled 15-40mm |
paramedrau sylfaenol:
| paramedrau sylfaenol | APMTM | FeCrAl | ||
| A-1 | AF | D | ||
| Y tymheredd gweithio parhaus uchaf | 1425 | 1400 | 1300 | 1300 |
| Y cyfansoddiad cemegol enwol,% Cr | 22 | 22 | 22 | 22 |
| AI | 5.8 | 5.8 | 5.3 | 4.8 |
| Fe | cynhwysion | cynhwysion | cynhwysion | cynhwysion |
| Ni | - | - | - | - |
| Y gwrthiant mewn 20ºC, Ωmm-2mm-1 | 1.45 | 1.45 | 1.39 | 1.35 |
| dwysedd, g/cm3 | 7.1 | 7.1 | 7.15 | 7.25 |
| Cyfernod ehangu thermol K-1 20-750ºC | 14×10-6 | 14×10-6 | 14×10-6 | 14×10-6 |
| 20-1000ºC | 15×10-6 | 15×10-6 | 15×10-6 | 15×10-6 |
| Y dargludedd thermol 20ºC, Wm-1K-1 | 13 | 13 | 13 | 13 |
| Capasiti gwres penodol 20ºC, KJkg-1K-1 | 0.46 | 0.46 | 0.46 | 0.46 |
| Pwynt toddiºC | 1500 | 1500 | 1500 | 1500 |
| Nodweddion mecanyddol yn ôl pob tebyg | ||||
| Cryfder tynnol, N mm-2 | 680 | 680 | 680 | 650 |
| Cryfder y cynnyrch, N mm-2 | 470 | 475 | 475 | 450 |
| Caledwch, Hv | 230 | 230 | 230 | 230 |
| Ymestyniad torri,% | 20 | 18 | 18 | 18 |
| 900ºC Cryfder tynnol, N mm-2 | 40 | 34 | 37 | 34 |
| Cryfder cropian 800ºC | 11 | 6 | 8 | 6 |
| 1000ºC | 3.4 | 1 | 1.5 | 1 |
| Magnetig | magnetig (Yn y tymheredd 600ºC) | |||
| Allyrredd, yr amodau ocsideiddio | 0.7 | 0.7 | 0.7 | 0.7 |
Manyleb:
| Math o Aloi | Diamedr | Gwrthiant | Tynnol | Ymestyn (%) | Plygu | Uchafswm Parhaus | Bywyd Gwaith |
| (mm) | (μΩm)(20°C) | Cryfder | Amseroedd | Gwasanaeth | (oriau) | ||
| (N/mm²) | Tymheredd (°C) | ||||||
| Cr20Ni80 | <0.50 | 1.09±0.05 | 850-950 | >20 | >9 | 1200 | >20000 |
| 0.50-3.0 | 1.13±0.05 | 850-950 | >20 | >9 | 1200 | >20000 | |
| >3.0 | 1.14±0.05 | 850-950 | >20 | >9 | 1200 | >20000 | |
| Cr30Ni70 | <0.50 | 1.18±0.05 | 850-950 | >20 | >9 | 1250 | >20000 |
| ≥0.50 | 1.20±0.05 | 850-950 | >20 | >9 | 1250 | >20000 | |
| Cr15Ni60 | <0.50 | 1.12±0.05 | 850-950 | >20 | >9 | 1125 | >20000 |
| ≥0.50 | 1.15±0.05 | 850-950 | >20 | >9 | 1125 | >20000 | |
| Cr20Ni35 | <0.50 | 1.04±0.05 | 850-950 | >20 | >9 | 1100 | >18000 |
| ≥0.50 | 1.06±0.05 | 850-950 | >20 | >9 | 1100 | >18000 | |
| 1Cr13Al4 | 0.03-12.0 | 1.25±0.08 | 588-735 | >16 | >6 | 950 | >10000 |
| 0Cr15Al5 | 1.25±0.08 | 588-735 | >16 | >6 | 1000 | >10000 | |
| 0Cr25Al5 | 1.42±0.07 | 634-784 | >12 | >5 | 1300 | >8000 | |
| 0Cr23Al5 | 1.35±0.06 | 634-784 | >12 | >5 | 1250 | >8000 | |
| 0Cr21Al6 | 1.42±0.07 | 634-784 | >12 | >5 | 1300 | >8000 | |
| 1Cr20Al3 | 1.23±0.06 | 634-784 | >12 | >5 | 1100 | >8000 | |
| 0Cr21Al6Nb | 1.45±0.07 | 634-784 | >12 | >5 | 1350 | >8000 | |
| 0Cr27Al7Mo2 | 0.03-12.0 | 1.53±0.07 | 686-784 | >12 | >5 | 1400 | >8000 |
Mantais:
Mae aloi nicelcromiwm gyda gwrthiant uchel a sefydlog, ymwrthedd i gyrydiad, ymwrthedd i ocsideiddio arwyneb yn dda, cryfder gwell o dan dymheredd uchel a chryfder seismig, hydwythedd da, ymarferoldeb da a weldadwyedd da.
150 0000 2421