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GC type (Dumbbell) SIC Heating Elements

GC type (Dumbbell) SIC Heating Elements
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Product Code : 05
Brand Name : JIAXIN
Product Description

Physical property of elements

Specific gravity

 2.6~2.8 g/cm3

Bend  Stength    >

300kgs

Hardness         >

 9 MOH

Tensile Strength >

150kg/cm3

Porosity  rate   <

 30%

Radiancy

0.85

Chemical composition

Silicon carbide heating elements are made mostly of semiconductor carbofrax, so they have chemical stability  and they are not corroded by acids. At certain temperature , howerer , the elements might be corroded seriously by alkali , alkaline, earth  and oxides of metals.

ELECTRIC PROPERTY OF ELEMENTS 

SIC heating elements has rather large specific resistance. When it is heated in air .The surface temperature of the hot zone reaches 1050 degree . Its resistance rate is 600~1400 ohm/mm2 .Its resistance value changes as the temperature rises. It shows a natrue curve : negative value from room-temperature  to 800 degree and positive value over 800 degree.

Surface load of element

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 , below figure shows the relation between furnace temperature , element temperature and element surface load under the condition that the lement radiation isn't obstructed .

recommend surface load:

Furnace  temp

  1100

1200

1300

1350

1400

1450

Surface load of

<17

<13

  <9

< 7

<5

  <4 


LIAOYANG JIAXIN CARBIDE CO. LTD.
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LIAOYANG JIAXIN CARBIDE CO. LTD.
No.231, Zhonghua Street, Liaoyang - 111000, Liaoning, China
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Mr. Bai Ye

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