Products

 Graphicarb Products offers machinable , resin impregnated , carbon-graphite blanks for companies that need to machine mechanical seal primary rings , radial bearings , thrust bearing , case wear rings , vanes for pumps and other mechanicaparts in house. 

 The machinable , resin impregnated blanks are made from fine-grained , high strength , carbon-graphite that is fully impregnated with chemically resistant , thermal setting resin. The material has excellent lubricating qualities when running in low viscosity liquids in the temperature range from -30 to +180o C. The blanks are readily machinable with conventional tungsten carbide or diamond tools. Mechanical seal rings , bearings , and vanes machined from these blanks are impervious to high-pressure liquids. The material is dimensionally stable so that mechanical seal ring faces can be polished to one helium light band flatness is retained indefinitely. The material is chemically resistant to almost all liquids except extremely strong , oxidizing acids and alkalis. 

 Professional power tools place the highest demands on electric motors. Carbon Brushes of this equipments are compelled to work under difficult situations such as : 

• High Current Densities
• vibration
• Dust Formation
• High Rotational Speeds
• Exposure to weather conditions etc.

 G35 Grade Carbon Block is specially made to work under such conditions. Carbon Brushes made from G35 Grade carbon blocks have shown excellent performance in this field. in additional to research and development , it is the right materials choice combined with superior process technology in our mixing plant with our modern production technology which ensures the high quality of our products.
 

 Mechanical Seal Ring Materials require high strength and a relatively high modulus of elasticity to with stand deformation at the interface. Carbon-graphite seal materials provide the strength and rigidity which are especially important in high pressure , high vacuum , high temperature and zero leakage mechanical end-face seals. High thermal conductivity is essential in removing heat from the interface. 

 Pure carbon graphite is strictly speaking a ceramic material , but in the form that it is used for seals it will usually be impregnated with other materials that are provided to variously improve the sealing. By reducing porosity , wear performance or strength is increased. it is widely used , not only as one of the face pair on the vast majority of mechanical seals , but also found as the most popular material for segmented circumferential seals and for piston rings in dry or marginally lubricated conditions. 

  At high temperatures plastic and composite bearings are subject to other problems such as softening , melting , deformation and may extrude out of the bearing area all together. Because the carbon graphite matrix is very strong.it is not subject to the deformation , melting or even softening that can occur with plastic bearings at these elevated temperatures 

  The temperature resistance in an oxidizing atmosphere can be specified as 400o C maximum for G10 bearing qualities.in a non - oxidizing atmosphere the temperature resistance is determined by the final graphitizing treatment of each individual grade ( e.g. upper application limit for graphite is approximately 3000o C ). temperature resistance is also affected by various impregantions. in the case of resin impregnation the maximum operating temperature is 180o C for lead impregantion 200o C and antimony impregnation 500o C 

Carbon graphite materials are used extensively for vanes , rotors and end plates in rotary vane pumps pumping both liquids and gases. Carbon graphite vanes can withstand the rubbing of the vane tip against the housing bore and the rubbing of the side of the vane against the slots in the rotor. Carbon Graphite rotors are light in weight to save energy and can also withstand the rubbing of the vane against the end plates.

Carbon graphite vanes , rotors and end plates are used for pumping liquids with poor lubrication properties (low viscosity) such as water. gasoline and beverages. They are also used for pumping strong chemicals that attack metals.

Carbon Graphite Vanes , rotors and end plates are also used to pump gases such as air , vacuum , combustion products and gasoline vapors.

Graphic Products supplies carbon graphite vanes , rotor , and end plates to rotary pump and compressor manufacture and rebuilders. The Vanes , rotors , and end plates can be supplied to customer prints and specifications.

 Using Carbon Thrust Bearing in Sub Motor ( G10Z Grade Carbon )

• Saves electricity upto 10%
• Increase Pump efficiency upto 5%
• Starts & runs the Pump even at low / fluctuating voltage
• Motor runs ar full RPM
• Gives upto 10% more output of water in LPM as compared to teflon / fibre
• Makes pump rotates freely & silently
• The motor does not get locked even offer prolonged rest

Submersible motors are fitted with Hydrodynamic Self Adjusting Tilting Shoe Thrust Bearing to take the axial down thrust from the pump. These are a complex and clever part of a reliable submersible motor and probably not understood very well. 

The Hydrodynamic Thrust Bearing transmits the rotating shaft's axial thrust load to the frame of the motor which is mechanically supported in the well. The axial Thrust load is transmitted through the bearing on a self renewing film of lubricant which is water in most motors. The pressure in the fluid film supports the load without the thrust disc or pivot shoes making contact.

  Carbon-graphite stoker bushes are used in travel grate of boilers for high temperature applications because metal bushes needs oil/grease lubrication, Oil/grease lubricants can start to melt, volatilize or carbonize above this temperature above about 350ºF (177ºC).. When this occurs, oil/grease-lubricated metallic bearings start to experience high friction, high wear, galling, vibration and even seizing. Moreover Metallic bearings can start to have problems of thermal expansions at high temperatures. 

At high temperatures, plastic and composite bearings are subject to other problems such as softening, melting, deformation and may extrude out of the bearing area all together.

Carbon graphite bearings are ideally suited for applications at elevated temperatures because they rely on graphite for their self-lubricating properties. These solid homogeneous bearing materials do not contain oil/grease lubricants and they do not rely on oil/grease for lubrication. Thus, bearings manufactured from these carbon graphite materials are not subject to the shortcomings associated with petroleum-based lubricants and metals at elevated temperatures.