Molybdenum Disilicide Rod For Testing Atmosphere Chamber Furnace

Introduction of Molybdenum Disilicide Rod

1.SUPER Mosi2 Molybdenum Disilicide Rod is a kind of resistance heating element with high temperature resistance, oxidation resistance and low aging based on molybdenum disilicide.When used in high temperature oxidation atmosphere, a layer of bright and compact quartz (SiO2) glass film is formed on the surface, which can protect the inner layer of si-mo rod from oxidation, so the element of si-mo rod has unique high temperature oxidation resistance.

Type of Molybdenum Disilicide Rod

1. GC(dumbbell) Type Element:

Type: GC

Diameter of Hot Zone: HD, mm

Diameter of Cold Zone:CD,mm

Cold End Length:CL,mm

Hot Zone Length:HL,mm

Length of part aluminum Sprayed:N,mm

2. U Type Element:

Diameter : HD/CD, mm/mm

Hot Zone Length:HL,mm

Cold End Length:CL,mm

Shank Spacing: M, mm

Length of part aluminum Sprayed:N,mm

3. W Type Elements:

Diameter : HD/CD, mm/mm

Hot Zone Length:HL,mm

Cold End Length:CL,mm

Shank Spacing: M, mm

Length of part aluminum Sprayed:N,mm

4. UL 135° Type Elements:

Diameter : HD/CD, mm/mm

Hot Zone Length:HL,mm

Cold End Length:CL1,mm

Cold End Length:CL2,mm

Shank Spacing: M, mm

Length of part aluminum Sprayed:N,mm

Please tell us the following data of molybdenum disilicide rod when send enquiry to us :

d = the diameter of hot zone ?

c = the diameter of cold zone ?

Le = the length of hot zone ?

Lu = the length of cold zone ?

a=Shank spacing

How many pcs ?

Molybdenum Disilicide Rod for electronics

1) Vertically hanging

Under normal temperature, MoSi2 heater is very brittleness, while under high temperature, it is plasticity, so the better way to install U Shape element is to hang it vertically from the furnace top through the support clamping chuck. The aim of such way is to avoid putting the mechanical stress directly to the element heat-generating end; otherwise the element will easily be broken.

2) Support clamp

Support clamp are applied to 9/18 and 6/12 two kinds of elements respectively. The support clamp supports the whole weight of the element and the position of the element is also determined by it, therefore, it must be installed carefully to assure the element vertically hung. In order to prevent the element from being over heated locally, the taper part of the element lower end must put into the furnace chamber.

Physcial property of molybdenum disilicide Rod:

Molybdenum Disilicide Rod use and maintenance

1. MoSi2 heater belong to Metal ceramic material. They are hard, crisp and low impact strength at room temperature .Therefore to be careful to avoid damage during transport and installation.

2. When MoSi2 heater continuously operate in an oxidation atmosphere, the surface temperature of 1700 type should not exceed 1700 ° C,1800-type should not over 1800 ℃ and for intermittent use,1700 type-element should not over 1650 ° C,1800type-element cannot exceed 1750 ℃.

Furnace dryness

New or old furnace not used for a long time needs to be dried before using. Generally, the drying temperature is 100-200℃.

However, if the element is used for a long time under the low temperature, it will cause the low-temperature oxidation.

For little furnace, the drying time is short, the influence of several drying hours is little, but for large furnace, which need to be dried for a long time, you had better open the furnace door to ventilate well. you can open the furnace door ajar with the temperature increment and completely close until the temperature reach 1000℃ above.