W ชิ้นส่วนทำความร้อน Mosi2

MoSi2 heating elements is a kind of resistance heating element basically made of high purely Molybdenum Disilicide. In oxidizing atmosphere, on the surface of MoSi2 element owing to the high temperature combustion a layer of compact quartz protective film is formed to prevent MoSi2 from continuously oxidizing.

In oxidizing atmosphere, its Max temperature can reach 1800° C. The resistivity of element rapidly rises as the temperature rises. Under normal operating conditions, generally the element resistance doesn't change with the service time changing so the old and new elements can be used mixed.

The key factor to the optimum service life of the element is to select the surface load of the element correctly according to the furnace construction, atmosphere and temperature.

GENERAL DESCRIPTION
The Mosi2 heating element is a dense cermet material consisting of MoSi2 and an oxide, glassy phase component.
Mosi2 heating elements have the ability to withstand oxidation at high temperatures by forming a protective layer of quartz on its surface. If this glassy phase should be exposed to contaminants, a lower melting phase forms.
This material literally drips off the element exposing more molybdenum disilicide on which a new protective oxide layer forms.
Mosi2 heating elements become somewhat ductile at approximately 1200C (2190F).

THE UNIQUE PROPERTIES
1. Mosi2 heating elements may be used up to a surface temperature of 1800C (3270F)in oxidizing atmospheres.
2. Long service life and ease of replacement contribute to high furnace utilization and low maintenance costs.
3. New and old elements can be used together and in series.
4. Can dissipate high power loading.
5. Can be used continuously or intermittently.
6. Provide rapid furnace temperature ramping.

QUALITY AND PRODUCT SUMMARY
Maximum Element Temperature --1700C (3090F) General Applications -- Most types of industrial furnaces for heat treating, forging, sintering, glass melting and refining, and for use in radiant tubes.