nr. 308, Gongxin Road, Industrial Park, Dongxing Town, Jingjiang City, Jiangsu Province, Kina
[email protected]/ [email protected]
nr. 308, Gongxin Road, Industrial Park, Dongxing Town, Jingjiang City, Jiangsu Province, Kina[email protected]/ [email protected]
Our radiant tubes are designed for use not only in domestic heat treatment equipment but also as replacement components for imported heat treatment systems. In 1998, this product line was awarded the Gold Medal at the National Technology Exhibition.
The heating element (tube core) inside the radiant tube is available in several configurations: cage type, vertical strip-wound type, and spiral-wound resistance wire type. The resistance wire materials used are nickel-chromium (Ni-Cr) and iron-chromium (Fe-Cr) alloys. The surface load is typically designed at ≤1 W/cm², with single-tube power ratings ranging from 3kW to 60kW. The operating temperature of the heating element ranges from 500°C to 1300°C.
The outer protective tube is manufactured in three types: centrifugally cast tubes, rolled and welded tubes, and seamless tubes.
In terms of service life:
Quenching furnaces: ≥1 year
Tempering furnaces: ≥3 years
Gas-fired radiant tubes: ≥2 years
For sleeve tube materials, please refer to the table below.
| Karakter/Performance | 1Cr13Al4 | 0Cr25Als | OCr21Al6 | 0Cr21Al6NB | 0Cr27Al7NO2 | Cr15Ni6o | Cr20Ni6o | Cr20Ni30 | |
| Vigtigste kemiske komponenter % | Cr | 12-15 | 23-26 | 19-22 | 21.0-23.0 | 26,5-27,8 | 15-18 | 20-23 | 20 |
| AL | 4-6 | 4,5-6,5 | 5-7 | 5-7 | 6-7 | ||||
| Fe | Balance | Balance | Balance | Balance | Balance | Balance | Balance | ||
| Vedr | Passende beløb | Passende beløb | Passende beløb | Passende beløb | Passende beløb | Passende beløb | Passende beløb | Passende beløb | |
| Mo | 1,8-2,2 | ||||||||
| Nb | 0.5 | 0.5 | |||||||
| Ni | 58-62 | Balance | 28-32 | ||||||
| Maksimal driftstemperatur for komponenter℃ | 950 | 1250 | 1250 | 1350 | 1400 | 1100 | 1150 | 1100 | |
| Tæthed /cm³ | 7.4 | 7.1 | 7.1 | 7.1 | 7.1 | 8.2 | 8.4 | 7.9 | |
| Vedrsistivity Ωmm²/m | 1,25±0,05 | 1,42±0,05 | 1,42±0,05 | 1,42±0,05 | 1,53±0,05 | 1,13±0,05 | 1,14±0,05 | 1,04±0,05 | |
| Temperaturkoefficient for modstand × 10-51 ℃ | 15 | 5 | 5 | 5 | -1 | 14 | 8.5 | ||
| Smeltepunkt ℃ | 1450 | 1500 | 1500 | 1500 | 1520 | 1390 | 1400 | 1390 | |
| Trækstyrke MPa | 588-735 | 637-784 | 637-784 | 637-784 | 686-784 | 637-784 | 637-784 | 637-784 | |
| Forlængelse % | >14 | >12 | >12 | >12 | >12 | >20 | >20 | >20 | |
| Vedrduction of area% | 65-75 | 65-75 | 65-75 | 65-75 | 65-75 | 60-75 | 60-70 | 65-75 | |
| Antal bøjninger | >5 | >5 | >5 | >5 | >5 | ||||
| Hårdhed | 200-260 | 200-260 | 200-260 | 200-260 | 200-260 | 130-150 | 130-150 | 130-150 | |
| Organisation | Ferriter (F) | Ferriter (F) | Ferriter (F) | Ferriter (F) | Ferriter (F) | Austenitisk (A) | Austenitisk (A) | Austenitisk (A) | |
| Magnetismeeeeee | Magnetismeeeeee | Magnetismeeeeee | Magnetismeeeeee | Magnetismeeeeee | Magnetismeeeeee | Ikke-magnetisk | Ikke-magnetisk | Ikke-magnetisk | |
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