Graphite Crucible/High Quality CNBM Graphite Crucibles

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China main port
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TT OR LC
Min Order Qty:
0 m.t.
Supply Capability:
100000 m.t./month

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Product Description:

Specifications

1. SIC graphite crucible
2. high pure and density
3. high strength crucible
4. ISO 9001
5. high heat condduction

Product Description

A crucible is a container used to hold metal for melting in a furnace and it is needed to withstand the extreme temperatures encountered in melting metals. The crucible material must have a much higher melting point than that of the metal being melted and it must have good strength even when white hot.

Graphite crucible can withstand the high temperature, and has good resistance to chemical erosions and thermal shock. Especially graphite crucible is ideal for the melting of aluminum, copper and etc.


Specification

Bulk Density

g/cc

1.70-1.88

Specific Resistance

μΩ.m

6.0-15.0

Compressive Strength

MPa

30-80

Bending Strength

MPa

20-45

Shore hardness


30-70

C.T.E.(100-600°C)

x10-6 /°C

2.5-5.5

Ash

%

0.01-0.2

Maximum Grain Size

mm

0.044-0

Usage

1. Graphite crucible cannot be exposed in moisture, and must be placed in indoor dry place or wooden shelf. Maintain ventilated. Moisture is strictly prohibited. Damped crucible is likely to crack.

 

2. Each crucible, especially damped ones, must be preheated and roasted in drying equipment or next to a ground furnace before use. The roasting temperature should start from a low temperature of 100°C below. Roast it to 150°C at a speed of not higher than 30°C per hour. Preserve the heat for about 8 hours and then dry it. The crucible dried next to a ground furnace should be placed at least for one shift, and often turned to change direction, till workers feel the internal wall of crucible is hot.

 

3. The melting time for the first time should be at least twice of the normal melting time, in order to avoid cracking inside the crucible due to heating up too fast, or even cracking immediately when the fire sets on.

 

4. Handle with care. Falling or shaking is strictly forbidden in order to present cracking. Crucible should be placed below the mouth of furnace to prevent the furnace lid abrading the upper edge of the crucible and thus affecting the capacity.

 

5. Pour out the remaining cold metals inside the crucible after use, and then add new materials. Carefully and gently add new materials into the crucible. Feed materials according to the capacity of crucible. It is not allowed to feed too many materials, in order to prevent crucible from swelling or bursting.

 

Picture

Graphite Crucible/High Quality CNBM Graphite Crucibles


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Q:Excuse me, carbon steel, carbon steel pipe, seamless steel pipe, spiral steel pipe, what is the difference?
There is no joint in the whole. The material can be used according to the needs, often used for high temperature, high pressure and other fluids. Hence, it is called seamless steel tube. The spiral steel tube is also formed by the heating and rotating of the strip steel. The utility model is suitable for the fluid below 30Kg, and the material can replace the seamless pipe with the big caliber and difficult to be manufactured according to the requirement, and is suitable for the medium and low pressure fluid with large caliber.
Q:In Japanese, what's the difference between adding "carbon" and "sauce" after the name?
Because this is similar to children's pronunciation is very cute, so sometimes good relationship between young people will use "carbon" pronunciation to install cute. So God, many animation or dramas in long sometimes "XX carbon ~" said.
Q:Carbon injection molding machine heating several degrees
The physicochemical properties of PC plastics are as follows:One is amorphous plastic, Tg is 149~150 DEG C, Tf is 215~225 DEG C, molding temperature is 250~310 DEG C, and relative average molecular weight is 2~4.The thermal stability is better and increases with the increase of molecular weight.The rheological properties are close to Newton liquid, and the apparent viscosity is greatly affected by the temperature, which is less affected by the shear rate and increases with the relative average molecular weight. No obvious melting point, higher melt viscosity. PC molecule chain has benzene ring, so the rigidity of molecular chain is big.PC has good creep resistance and good dimensional stability, but it is difficult to eliminate internal stress.PC at high temperature, water easily degraded, molding requirements of moisture content below 0.02%.The product is easy to crack.Before molding, the PC resin must be fully dried. The fluidized bed drying method (drying temperature 120 to 130 DEG C, 1 ~ 2H), vacuum drying (110 degrees Celsius temperature, vacuum degree more than 96kPa, 10 ~ 25h), hot air circulation drying (above the temperature of 120 to 130 DEG C, 6h). In order to prevent the moisture absorption of the dry resin, it should be placed in the insulating box at 90 degrees. It should not be stored for a long time. When forming, the hopper must be closed, the hopper should be equipped with heating device, the temperature is not less than 100 degrees, and no heat insulation device hopper, a feeding amount is best less than half an hour of the amount of use, and should be stamped tightly.
Q:What can light hydrocarbon carbon five be packed with?
Light hydrocarbon carbon fiveLight hydrocarbon carbon five is a light yellow or colorless transparent flammable liquid with a density of 0.60-0.68 and a boiling point of 36.1 degrees. The calorific value of liquid light hydrocarbons is 10800kcal/kg. (the current price in Chengdu is 2000 yuan / ton, and the monthly supply is about 1000 tons.).
Q:Are carbon fibers organic polymer materials?
Molecular inorganic macromolecular substance may be from a variety of other elements of atoms. The backbone composed entirely of the same element called "backbone chain", composed of different kinds of elements called impurity atoms in the main chain chain. Mainly by covalent bond between atoms (including coordination bond) combined with each other.Carbon fiber (carbon fiber, referred to as CF), is a new type of fiber material with high strength and high modulus fiber in more than 95% of a carbon content. It is composed of flake graphite microcrystalline fibers along the fiber direction of piling up, Shi Mocai ceramics material by carbonization and graphitization treatment the microstructure of carbon.
Q:Are carbon fibers flammable?
No, it's not flammable. You can't burn it.Pre oxidized excess oxygen filaments cannot be burned.
Q:Carbon fiber rod 60
4. application development, at present, various applications for carbon fiber annual demand ratio is as follows: sports applications of about 30%, aviation applications for 10%, industrial applications for 60%. Three important applications in sports are the golf club, fishing rod and tennis racket frame. At present, it is estimated that the annual output of big bat is 34 million. According to the national geographic classification, these big clubs are mainly made in the United States, China, Japan and Taipei, China, and the United States and Japan are the main consumer of golf clubs, accounting for more than 80%. 40% of the carbon fiber balls in the world are made from carbon fiber of TORAY. Carbon fiber fishing rods around the world produce about 20 million pairs a year, which means this application has a steady demand for carbon fiber. The market capacity of tennis racket frames is about 6 million pairs per year. Other sports applications include hockey sticks, ski sticks, archery, and bicycles, while carbon fiber is also used in rowing, rowing, surfing, and other marine sports. In 1992, the airline's demand for carbon fiber began to decline, mainly due to the decline of the commercial aircraft industry, but it recovered rapidly in the early 1995. The main reason for the recovery is that the overall efficiency of the production has been improved, but also began to fully produce Boeing 777 aircraft, TORAY carbon fiber has been used
Q:What are the main factors that affect the strength of carbon fibers?
The main factors affecting the strength of carbon fibers arePAN precursorPreoxidationcarbonizationGraphitizationsurface treatmentCoilingcarbon fibre
Q:What are the brands of carbon batteries?
Yes, a lot of people do not pay attention to, the Nanfu battery, strange carbon batteries say it is really rare, generally small supermarkets are not only basic, and is strongly alkaline. Therefore, it is best to go to a large supermarket or electrical store try, there are generally sold there, and many types, the choice will be more.
Q:What materials can be carbonitriding?
Low temperature carbonitriding for high alloy tool steel, high-speed steel tools, etc., in temperature carbonitriding is under great pressure not only in carbon steel wear parts, high temperature carbonitriding is mainly used for medium carbon steel and alloy steel under great pressure.

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