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1625C High Temperature Double Spiral SiC Silicon Carbide Industrial Heating Element

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Usage Industrial
Trademark SUNSHINE
Origin China

What is SGR type Double Spiral Silicon Carbide Heating Element?

SGR type Double Spiral Silicon Carbide Heating Element similarly to Single spiral type.

SGR type Double Spiral Silicon Carbide Heating Element is a tubular element with a spiral-grooved heating section, and as a major characteristic, both electrical connections are found at one end only.Sunshie double spiral silicon carbide heating element is crafted from special materials. It features a hot zone density of 2.8 g/cm³ and can operate at temperatures up to 1625°C, ensuring a very long working life. One end of the wire is designed for easy installation.

Double spiral Double Spiral Silicon Carbide Heating Element(SGR type SiC Heater Element) is a kind of electric heating element with one end connection. The heating end is spiral, the upper and lower parts are cold ends, the upper part is conductive end, and the lower part is supporting end.

The cold end is divided into two parts by a gap cut vertically from the middle, which is connected to the positive and negative terminals of the power supply.

Production process Made into blank, silicided under high temperature and re-crystallized.
Weight According to size
Classification Furnace heater
Packing Cartoon box inside, Polyfoam filled, Wooden box outside
After-sales Service Provided Overseas service center available
Power Source Electric
Material Above 99% Silicon carbide, Silicon Carbide (SiC)
Also called Sic resistance / sic heater / silicon carbide heater rod
Flexure strength 98MPa
Porosity 5%
Heat conductivity (hot end) 16-21W/m+℃ at 1000℃
Specific heat 1.0 kj/kg+℃ at 25℃-1300℃
Specific resistance (hot end) 0.016Ω cm at 1000℃
The coefficient of thermal expansion 4.5×10-6

SGR type Double Spiral Silicon Carbide Heating Element is energy-conserving, convenient and easy to install due to the same-end terminal structure.

Sgr Type Sic Heating Elements In Heating

Model number and reference data for SGR type Double Spiral Silicon Carbide Heating Element

Model number and reference data
SCR Type Double Spiral Silicon Carbide Heating Element
Dia(mm) Nominal Loading(at 1050℃)
Hot Zone Cold End
Ω/mm W/mm Ω/mm W/mm
18.0 0.02158 8.48 0.00430 1.70
200 0.02302 9.42 0.00384 1.6
25.0 0.01969 11.78 0.00328 1.75
30 0.01523 14.13 0.00190 1.75
31.7 0.01341 14.93 0.00152 1.85
35.0 0.01224 16.49 0.00150 2
38.1 0.01103 17.95 0.00116 2
40.0 0.00905 18.84 0.00100 2.10
44.4 0.00960 20.91 0.00079 2.10
54.0 0.00636 25.43 0.00073 2.30

SGR type Double Spiral Silicon Carbide Heating Element regular size

SGR TYPE



Φ(mm) OL(mm)
HEATER
Φ16 30+10-5


>Φ20 50+20-10
SIZE DIAMETER(mm) HZ CZ OL SURFACE
RESISTANCE





mm mm mm cm² VOLT POWER ±20%
SGR16*100*150 16 100 150 250 50 61 940 3.96
SGR16*100*200 100 200 300 50 69 1060 4.49
SGR16*150*150 150 150 300 75 84 1290 5.47
SGR16*150*250 150 250 400 75 99 1520 6.45
SGR16*200*200 200 200 400 100 113 1740 7.34
SGR16*250*200 250 200 450 125 135 2080 8.76
SGR20*100*150 20 100 150 250 62 58 1110 3.03
SGR20*100*250 100 250 350 62 72 1380 3.76
SGR20*150*200 150 200 350 94 87 1670 4.53
SGR20*200*200 200 200 400 125 109 2090 5.68
SGR20*250*150 250 150 400 157 124 2380 6.46
SGR20*250*250 250 250 500 157 138 2650 7.19
SGR20*300*250 300 250 550 188 160 3070 8.34
SGR25*150*200 25 150 200 350 117 87 2000 3.78
SGR25*200*200 200 200 400 157 110 2530 4.78
SGR25*200*300 200 300 500 157 121 2780 5.27
SGR25*300*300 300 300 600 235 167 3840 7.26
SGR25*300*400 300 400 700 235 179 4120 7.78
SGR25*350*300 350 300 650 274 191 4390 8.31
SGR25*400*300 400 300 700 314 214 4920 9.31
SGR30*200*200 30 200 200 400 188 190 2790 2.9
SGR30*250*200 250 200 450 235 111 3440 3.58
SGR30*300*300 300 300 600 282 132 4090 4.26
SGR30*350*350 350 350 700 329 153 4740 4.94
SGR30*400*400 400 400 800 376 174 5390 5.62
SGR30*450*350 450 350 800 424 194 6010 6.26
SGR30*500*300 500 300 800 471 214 6630 6.91
SGR35*200*200 35 200 200 400 219 89 3260 2.43
SGR35*250*200 250 200 450 274 109 3990 2.98
SGR35*300*300 300 300 600 329 130 4760 3.55
SGR35*400*300 400 300 700 439 171 6260 4.67
SGR35*450*350 450 350 800 494 191 6990 5.22
SGR35*500*300 500 300 800 549 211 7720 5.77
SGR40*200*200 40 200 200 400 251 86 3660 2.02
SGR40*250*200 250 200 450 314 106 4510 2.49
SGR40*300*300 300 300 600 376 127 5400 2.99
SGR40*350*300 350 300 650 439 147 6250 3.46
SGR40*400*300 400 300 700 502 167 7100 3.93
SGR40*400*400 400 400 800 502 167 7100 3.93
SGR40*450*300 450 300 750 565 186 7910 4.37
SGR40*450*350 450 350 800 565 187 7950 4.4
SGR40*500*300 500 300 800 628 206 8760 4.84

The Double Spiral Silicon Carbide Heating Element can be used in a variety of applications.

SGR elements are used in a wide variety of furnace applications, from small laboratory furnaces to large industrial heating processes, in different atmospheres and temperature ranges.

Used in dental furnaces

Most zirconia materials require sintering at high temperatures of 1450–1550°C for two hours or more. As a common electric heating element in zirconia sintering furnaces, silicon carbide rods are ideal for this process. They can be used to heat zirconia in an open crucible without a cover, which eliminates the need for a double atmosphere inside the crucible and enhances the accuracy of sintering. This approach avoids the complications of a second heating environment. Additionally, silicon carbide rods can cool rapidly without damaging the components.

Double Spiral Silicon Carbide Heating Element Used In Dental Furnace

Installation and Operation of SGR type Double Spiral Silicon Carbide Heating ElementTwo types of installation

SGR type SiC Heater Element can be mounted vertically or horizontally.

Mounting Horizontally

When mounting the SGR type SiC Heater Element horizontally, the hot end does not need to be supported, the slot in the terminal end should not come in contact with the insulation in the wall of the furnace or kiln.

This is most easily accomplished by placing the slot in a horizontal position. The terminal holes should also be 10% larger than the diameter of the element.

Extreme caution should be used when mounting to ensure that the SGR type SiC heating elements are not placed in tension.

There should be adequate freedom to allow for the furnace and SGR type SiC heating elements to expand and contract independently.

Sgr Type Silicon Carbide Heating Element In Heat Generation

Location of installation

SGR type SiC heater elements should have their heating sections centered in the furnace chamber so that no portion of the heating section extends into the furnace wall.

Sgr Type Double Spiral Silicon Carbide Heating Element

A conical or truncated cone shaped recess 1/2 inch (13mm) deep is sometimes located on the interior wall where the SGR type SiC heating elements passes through. This allows the hot zone to radiate properly and helps maintain a uniform emperature in the kiln.

Recommended SGR type Double Spiral Silicon Carbide Heating Element spacing

X = 2 × element diameter is the minimum,

1.5 × element diameter is the absolute minimum and requires a reduced element surface watt loading.

Z = S ÷ 1.41 minimum for stationary loads

Z = S ÷ 1.73 minimum for moving loads

S = 2 × element diameters minimum

X – distance from the centerline of element to any reflecting surface, such as a refractory wall or centerline of an adjacent element

Horizontal Installation Diagram

Vertical Installation Schematic

The advantages of SGR type Double Spiral Silicon Carbide Heating Element

Double spiral SiC Heater Element has a characteristic of current heating, heating speed fast, uniform temperature field; The normal temperature in oxidation atmosphere can reach 1450℃, and the continuous use can reach 2000 hours.

And it has good chemical stability, high temperature resistance, oxidation resistance, corrosion resistance.

The conductive end of the cold end of the double spiral silicon carbon rod is evenly sprayed with aluminum layer, which greatly improves the conductive property.

Connection method for SGR type Double Spiral Silicon Carbide Heating Element

Double spiral SiC Heater Element is suitable for wiring on one side of electric furnace. The diameter and length of cold and hot end of equal diameter silicon carbide rod can be selected according to the requirements of electric furnace structure, temperature and power.

Sgr Type Double Spiral Silicon Carbide Heating Element

The single ended connection of SGR type sic heater element makes them ideally suited to various applications where standard elements cannot conveniently be used, such as where access would be difficult, or in any case where single ended connections are essential.

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Product Tags: Silicon Carbide Heating Elements , SiC heater , Double Spiral Silicon Carbide Heating Element

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Henan SUNSHINE High Temperature Materials CO., LTD
Verified Business License
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Qingdao
Main Markets
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