éléments chauffage LGO

Koyo Thermo Systems est représentée en Europe par
Crystec Technology Trading GmbH

Éléments chauffage LGO pour des fours tube

Koyo Thermo Systems Ltd. is a manufacturer  of Light Gauge Overbend (LGO) heating elements, but can also supply standard Heavy Gauge Coil (HGC) heaters. LGO heaters are constructed in a totally different way. On these pictures you can see the differences:

élément chauffage LGO

élément chauffage HCG

LGO

HGC

Patented LGO heating elements are of low weight and have a thermal mass that is <50% of equivalent industry heating elements:


Weight (kg)

Thermal Mass

(kcal/°C)

Material

---LGO---

Standard

---LGO---

Standard

Shell

10.9

26.6

2.6

4.7

Insulation

17.4

14.7

4.6

4.2

Support

0

10.3

0

2.0

Heater

4.6

24.3

0.5

2.7

Total

32.8

75.9

7.7

13.6

The excellent temperature homogeneity results in a very long flat zone

zone flat

and in a very good radial temperature uniformity

distribution de temperature radial

Comparing the two different types of heating elements available from Koyo Thermo Systems, the LGO heater reacts much quicker on controller commands and therefore you can avoid almost completely overshooting. This is especially true for "low temperature" applications, like polyimide bake, hydrogen anneal or SOG:

overshooting temperature

It is possible, to retrofit an LGO heating element to existing furnaces.