NEW RAYTEQ HEATING ELEMENTS
New high power density heating elements constructed with life-enhancing materials technology
Dual-refractory heating element system boosts power density while increasing operating life
- Rayteq’s new redesigned heating elements feature maximum power density, yielding the highest melting rates in the industry
- Life-enhancing new materials technology combined with unique tooling system virtually eliminates harmful internal stresses while increasing strength and shock resistance
- Improved material properties reduce internal temperature of embedded heater coils for extended operating life
- Elements produced using highly automated equipment for higher quality and reduced risk of operator error
- No compromises with dual-refractory system: Rugged support panels made from the highest strength refractory with best thermal properties while heater coil embedding cement contains no harsh chemicals
- Element coil surface is never subjected to corrosive chemical attack as with single-refractory elements. Result: Greatly extended operating life
- Unique coil embedding process uses no paraffin or wax, thus eliminating harmful internal air gaps and hot spots that reduce element life
- Stranded lead-to-coil welds have by far the largest cross-sectional area in the industry, virtually eliminating weld failures – a common cause of element failure
- Actual operating life up to 2 to 3 times longer than similarly appearing single-refractory elements
- Rayteq heating elements are available with either (a) high-nickel stranded or (b) twisted lead wires
Rayteq heating elements are available with two lead wire types:
Stranded High-Nickel Leads |
Twisted Leads |
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Stranded high-nickel leads can be used for all furnace and heating applications. However, they are more expensive than twisted leads because of the high cost of nickel alloys and because an internal weld is required. Stranded leads never become brittle, so they are recommended for use in furnaces where elements are moved or subject to mechanical shock.
Twisted leads are less expensive because they contain no nickel and do not require any internal welds, and they can be used successfully in many furnaces. However, twisted leads are not recommended for applications where the elements may be moved or are subjected to mechanical shock because they become brittle over time and movement or shock can break them. Twisted leads can be used in most stationary furnaces, and lead life can be enhanced by using the “half-moon” installation method shown below. If the furnace is subjected to shock, bowing the twisted leads allows them to flex, reducing the likelihood of breakage. They should not be used in tilting furnaces, top heated holding furnaces and launders, or furnaces mounted on hot-chamber die casting machines.
