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graphite¥carbon¥ceramic¥heat-resistance¥carbon-material

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¥KC CARBON CERAMICS

 

 

ƒAbout KC CARBON CERAMICS„

 

œ

KC CARBON CERAMICS which was developed in Kyushu National Industrial Research Institute the compound material of carbon and ceramics (carbonization silicon and carbonization boron), and are the kind of graphite. It does not only have many effective features as graphite alway has, but has the characteristic that consumption by oxidization decreases very much in the high temperature atmosphere. Moreover, while having the characteristic of both carbon and ceramics and compensating mutual demerit mutually, it is the material which can demonstrate each strong point.

œ

KC CARBON CERAMICS are made from the carbon (high quality raw coke) and the ceramics fine powder (carbonization silicon and carbonization boron). KC CARBON CERAMICS are the high purity and precise self-sintering objects. And its spent a long period to break the material finely and to sinter.

œ

We are manufacturing KC CARBON CERAMICS with responsibility at all processes, and we are always inspecting the quality of a product severely. Furthermore, we are having the organization which can respond also to short time for delivery by state of emergency.

œ

Catalog pictureFTable@‚P@‚Q@‚R@‚S@‚T@‚U@‚V@‚W@

 

œFeature

Resistant from oxidizing by heatF

Compared with common black lead material, there is very little oxidization loss in high temperature.

Resistant from high heat shockF

Compared with heat resistance of any other ceramics, it is very strong against a heat shock. It is not divided by 800-1200-degree C heat shock.

 Be difficult to attach

Molten metal and glass is difficult to attach. It makes daily maintenance easier.

MachinableF

It is possible to cut KC CARBON CERAMICS in free form.

High-density and fineF

Since the binder for sintering it is not used for carbon ceramics, they have a few stomas and a low absorption of water.

High intensityF

The intensity of KC CARBON CERAMICS is very high and cannot be easily worn out.

Good thermal conductivityF

Since heat conduction of KC CARBON CERAMICS is good, it follows change of circumference temperature quickly, or radiates heat.

Low heat expansionF

Since KC CARBON CERAMICS has very little heat expansion, it does not have distortion by heat.

Electric conduction objectF

Since it is the material which conducts electricity, it can use for a surface sensor of melting metal, a heater element, etc.

Short time for deliveryF

We subdivide KC CARBON CERAMICS from the block which is carrying out standing stock and ship it.

 

œThe situation of immersing in the melting aluminum
@ ¦750 degrees C (The temperature of surface of melting metal)

Before immersing@@@@Immersing 2 hours@@@@Immersing 5 hours

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Left: KC CARBON CERAMICS
@@@Right: Common graphite@

 

œTechnical data

The technical data which explained the characteristic of KC CARBON CERAMICS in more detail are prepared in PDF form (Acrobat form). By all means, please download from the button here and peruse.

http://www.kogi.co.jp/img/adobe/acrobat.gifTHE KC CARBON CERAMICS technical data

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ƒcharacteristic„

 

The dater table of KC CARBON CERAMICS

Kind of dater

Apparent Specific Gravity
(g/
E)

Shore Hardness
(Hs)

Bending Strength
(MPa)

Electrical Resistivity
(
ƒÊƒ¶E)

Coefficient of Thermal Expansion
(
~10-6/Ž)

Hydro-Absorption Coefficient
(
“)

Kind of product

 

BS10609

2.09

35

90

1,000

6.0

3.0

BS11509

2.17

45

110

1,400

5.7

3.0

BS11907

2.21

45

110

1,500

5.4

3.0

BS12506

2.30

45

160

2,000

5.2

2.0

Normal Graphite

1.77

54

50

1,100

4.6

\

 

 

Characteristic tendency table of KC CARBON CERAMICS

 

Characteristic

Non-Wetly

Oxidation Resistance

Thermal Shock Resistance

Impact Strength

Abrasion Resistance

The ease of sliding

Kind of product

 

High

Low

High

High

Low

High

BS10609
BS11509
BS11907
BS12506

ª
b
b
«

ª
b
b
«

ª
b
b
«

ª
b
b
«

ª
b
b
«

ª
b
b
«

 

Low

High

Low

Low

High

Low

 

Form and a size of KC CARBON CERAMICS

Plate

Round Bar

Pipe

HeightF‚l‚‚˜ 800mm

Width
F‚l‚‚˜ 300mm

Thickness
F‚l‚‚˜ 100mm

DiameterF‚l‚‚˜ ƒÓ220mm

Length
F‚l‚‚˜ @800mm

ƒÓ13~ ƒÓ6~400mm
ƒÓ22~ƒÓ12~400mm
ƒÓ30~ƒÓ17~600mm
ƒÓ35~ƒÓ20~800mm
ƒÓ45~ƒÓ28~800mm

Please specify in form smaller than the size of the upper table.

 

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ƒManufacturing process of KC CARBON CERAMICS„

Process

Contents

Materials combination

We prepare the kind of KC CARBON CERAMICS which changed the amount of combination of carbon and ceramics according to a customer's needs. The amount of addition of ceramics is 25 - 45%.

Processing of powder

Mixture, pulverization, and dryness are performed over long time, and it is processed into the powder stabilized in the fine and uniform state.

Molding

Since the forming object by the CIP fabricating method does not have directivity in a material, it has the stable characteristic.

Primary firing

It burn in reduction atmosphere. Heat treatment required 25 days period.

Secondary firing

High temperature heat treatment is performed in reduction atmosphere. Heat treatment required 15 days period..

Machinable

KC CARBON CERAMICS is machineable by the usual tool. However, we recommend you a multi-crystal diamond from the life of a tool. It is made to process it by the processing special contractor about special form.

Inspection

We are controlling the quality by measurement of a particle size distribution, and measurement of molding density in combination and the molding process of materials. At a sintering process, only the material which passed by many physical-properties examinations (bending strength, a ratio resistance, the Shore altitude, the rate of a stoma, oxidation resistance, etc.) and electron microscope observation (SEM. COMP) is sent to a machining process. Only the product which stood the test by processing inspection (a size, appearance, etc.) is sent to a shipment process.

Shipment

A product is enough protected with shock absorbing material, is packed up with a carton box and shipped.

 

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ƒThe example of a use„

 

œFor melting aluminum

Sheath of thermocouple, Cone valve, Tap corn, Nozzle, Mold, Parts of a metal pump and an electromagnetism pump, Parts of rotary degassing equipment, Antenna of melt surface, Die-casting machine component, A ladle machine component, A spout, Mouse piece, Gassing pipe, Crucible.

 

œFor melting copper, brass, silver

Sheath of thermocouple, Cone valve, Tap corn, Nozzle, Float nozzle, Gassing pipe, A die, Crucible for flux, Guide plate for hot material, Rabble, Ingot mold.

 

œFor melting glass

Mold for glass bottle, Guide for melting gob, Spanker, Hard disc mold, Lens glass mold, glass tube mold, Parts of sealing machine, Tray,  Roller.

 

œOther application articles

Insertion of inclined laying head for high grade steel, Rotary valve component, Heater element, Seal for hot bearing, Mechanical seal, Mold for sintering material, Hot press mold component, Guide roller for hot material.

 

The example of a use of KC CARBON CERAMICS in more detail are prepared in PDF form (Acrobat form). By all means, please download from the button here and peruse.

http://www.kogi.co.jp/img/adobe/acrobat.gifThe example of a use of KC CARBON CERAMICS

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