Carbon is an element that can form into several different
allotropes including graphite, diamond, and fullerite. Graphite is the most
steady type of carbon and is the most well-known, as carbon naturally occurs as
graphite under standard conditions. Graphite is generally known for its better
conductivity and resistance for high heat and corrosion. This makes it a typical
material in high heat, high-pressure circumstances in the aerospace, electrode,
nuclear, energy, and military industries. Despite the fact that graphite can
deal with extreme high-pressure circumstances effortlessly, it is really an
exceptionally delicate, rough, and fragile material.
Owing to our quality centric organization, we are supplying
the Isostatic High Density Graphite which raw materials are procuring
from Japan & manufactured as per the international quality norms. It is highly
reliable for a longer service life and appreciated by the clients for their
excellent performance, wide industrial applications, smooth surface and high
strength. We offer this product this within affordable price range and ensure
timely delivery direct at the clients' premises. Moreover, these products are
manufactured in accordance with the clients' exact specifications. Graphite
Crucibles Grade Isostatic High Density offer high performance with good
technical and economic effect. They are used in metallurgy, casting, chemical
and (scientific) industry in general; they are also used to produce alloy tool
steel melting and non-ferrous metal and alloy melting.
Graphite material is oxidised under heat in an air
environment, so it is largely used in inert environments and vacuum applications
such as in the manufacture of semiconductors and its also used by the nuclear
industry. The grade Isostatic High Density material has similar properties to
Boron Nitride material allowing for use at extreme temperatures (up to 2700°C),
in an inert atmosphere.
Maximum service temperature is 4100C, maximum inert
atmosphere service temperature is 27000C.
Characteristics:
Thermal spalling resistance: Extremely higher resistance
to rapid heating and cooling with less spalling.
Erosion resistance: Extremely higher resistance to metal
or flux erosion with its uniform and dense structure.
Thermal shock resistance: Higher cold and hot strengths
which assure safety handling.
Oxidation resistance: The improved base material and the
newly developed special glaze provide the excellent oxidation
resistance and remarkably longer service life.
Higher thermal conductivity: The high percentage of fixed
carbon makes the material the higher thermal conduction which
ensures shorter melting time and save fuel consumption.
No metal contamination: The base material has been
strictly selected so that hardly any metal contamination during
melting operation.
Stable quality: The Cold Isostatic Press (CIP) shaping
system and the substantial quality assurance system maintain stable
product quality.
Applications
Graphite has many industrial applications in various natural or synthetic forms but he
application for this grade is specific to industries and applications such as :
Reducers, particularly in the steel industry (blast coke furnaces)
Electrodes for the steel industry (electrical steel)
Moderators in nuclear reactors
Adsorbents in activated charcoal filter
Diamond Tool Pressure Sintering
Die Moulds
Continuous Casting Dies for Aluminium, Copper and Brass
Degassing Rods
Crucibles and Sealing Rod
Semi Conductor applications
Solar Technology applications
EDM Applications
Graphite machining
Graphite machining can be done using the below five methods:
Compression molding
Isostatic molding
Vibration molding
Die molding
Extrusion
Venture Scientific® has tie-up with many Job Work offering companies
who has manufacturing processes and a certified quality system allowing them to
manufacture the most complex parts in complete compliance with your designs and
requirements.
Flat or round grinding, turnery on lathes
Milling
Drilling
Ultrasonic processing
Plane and cylindrical polishing
Tapping, threading, grinding
Graphite-metal and graphite-ceramic compounds, brazing, metallizing
Key Benefits:
Technological Merit
Good mechanical strength
Long life: Due to a the excellent chemical stability, corrosion, erosion
and temperature resistance, material is afforded a long lifespan.
High heat conduction performance and resistance to thermal shock:
Possible to use even at 2700°C in inert atmosphere, high thermal shock
resistance at high temperatures.
Excellent corrosion resistance: Resistance is excellent against a wide
range of acid and alkaline environments, great degree of chemical
stability.
Typical Graphite shapes include:
Crucibles
Hot Press / Spark Plasma Sintered Dies
Plates/Sheets.
Trays
Blocks
Foils
Felts
Rods
Custom Shape
MATERIAL PROPERTIES
PROPERTY
UNIT
VALUE
Bulk Density
g/cm3
1.82
Flexural Strength
MPa
48
Tensile Strength
MPa
40
Compressive Strength
MPa
102
Specific Resistance
μohm.cm
1550
Grain Size
µm
15
Hardness – Shore
65
Hardness – Rockwell H
96
Coefficient of thermal expansion (400 to 500oC)
/ oC
4.7 x 10E-6
Porosity
%
12
Thermal Conductivity
W/moC
85
Modulus of Elasticity
GPa
9.2
Ash
ppm
750
Note:- The above information is believed to be correct but does not purport to
be all inclusive and shall be used only as a guide. The information in this document is
based on the present state of our knowledge and is applicable to the product with regard
to appropriate safety precautions. It does not represent any guarantee of the properties
of the product. Venture Scientific® shall not be held liable for any damage resulting
from handling or from contact with the above product.