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Molybdenum Disilicide Testing Electric Furnace Elements For Atmosphere Chamber Furnace

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Molybdenum Disilicide Testing Electric Furnace Elements For Atmosphere Chamber Furnace

Molybdenum Disilicide Testing Electric Furnace Elements For Atmosphere Chamber Furnace
Molybdenum Disilicide Testing Electric Furnace Elements For Atmosphere Chamber Furnace

Large Image :  Molybdenum Disilicide Testing Electric Furnace Elements For Atmosphere Chamber Furnace

Product Details:
Place of Origin: Henan ,China
Brand Name: SP
Certification: ISO9001
Model Number: U W type
Payment & Shipping Terms:
Minimum Order Quantity: 5pcs
Price: Negotiation
Packaging Details: wooden case
Delivery Time: 5-10 working days
Payment Terms: T/T, Western Union
Supply Ability: 1000pcs/month
Detailed Product Description
Name: Molybdenum Disilicide Heater Diameter: 9/18mm
Application: All Kinds Of High Temperture Furnace Hot Extensibility: 4%
Porosity Rate: 7.4% Volume Density: 5.5-5.6g/cm3
Voltage: 220V,380V Length: 100-1000mm
Certification: CE Compressive Strength: 650Mpa
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molybdenum disilicide heater

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electric furnace heating element

  Atmosphere Chamber Furnace Molybdenum Disilicide Heater Rod 1600C Electric Heating

 Introduction of Molybdenum Disilicide Heater Rod

1. Mosi2 heating element 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.

2. Under the oxidizing atmosphere, the maximum operating temperature is 1800, the resistance of the heating element of silicon molybdenum rod increases rapidly with the temperature increasing, and the resistance value is stable when the temperature is constant.Under normal conditions, the resistance of elements does not change with the service time, so the new and old elements can be mixed.

3.According to the structure, working atmosphere and temperature of the heating equipment, the correct selection of the surface load of the heating element is the key to the service life of the element.

 

 

Molybdenum Disilicide Heater 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.

Molybdenum Disilicide Testing Electric Furnace Elements For Atmosphere Chamber Furnace 0

 

Physcial property of molybdenum disilicide heater:

Density Bending Strength Hardness Apparent Porosity Water Absorption Elongation Fracture Toughness Compressive Strength
5.8g/cm3 350Mpa 12.0Gpa ±2% 0 4% 4.5Mpa.m1/2 650Mpa

 

 

MoSi2 heater 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.

 

Please tell us the following data of molybdenum disilicide MoSi2 rod heating element 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 ?

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