Product Description

The forming methods of graphite block include moulding, extrusion, vibration and isostatic pressure.

Our main and most preponderant graphite plate is vibratory compaction.

Our graphite block is made from the domestic high quality petroleum coke and needle coke, which is from China National Petroleum Corporation Daqing, Jinxi and Fushun petrochemical Company. So, we can guarantee the first-level quality.

Characteristics of graphite plate:

1.Low electric resistance, 

2.Good electric and thermal conductivity,

3.High oxidation resistance, 

4.Greater resistance to thermal and mechanical shock, 

5.High mechanical strength, 

6.High machining accuracy and so on.

Application:

1. Refractory material:

Widely used in the metallurgical industry. 

2. Conducting material:

In the electronics industry, widely used for graphite electrode, brush,, etc 

3. Wear-resisting material and lubricant:

Use graphite as wear-resisting and lubrication materials, can be 100m/s speed sliding in - 200 ~ 2000 °C temperature range, no or less lubricanting oil. 

4. Sealing material:

 It can be as sealing ring in the equipment, such as centrifugal pump, hydraulic turbine ,etc. 

5. Anticorrosion material: 

Widely used in petroleum, chemical, hydrometallurgy departments.  

6. Protection materials:

Insulation, high temperature resistant, radiation  

7. Furnace parts:  

resistance heating elements, induction susceptor, structural elements and charging plates, furnace linings, heat shields and covers for pulling monocrystalline silicon or optical fibers, etc. 

8. Anodes for the electrolysis of metals.

9. Parts for heat exchangers. 

Producing progress:

Raw material->Medium crushing/milling->Screening->dosing->kneading->vibrated molding->impregnation->baking->graphitization

 

Physical and chemical index

 

Item	Unit	Grade
Max Grain Size	mm	0.8	0.8	2	2	4	4
Bulk Density	g/cm³	≥1.70	≥1.73	≥1.58	≥1.70	≥1.57	≥1.69
Specific Resistance	µΩ.m	≤8.5	≤8.0	≤11.5	≤8.5	≤11.5	≤8.5
Flexural strength	Mpa	≥10.0	≥12.0	≥6.0	≥9.0	≥6.5	≥9.5
Compressive Strength	Mpa	≥24.0	≥31.0	≥18.0	≥30.0	≥17.5	≥29.0
Thermal Conductivity	W/(m.K)	≥120	≥130
C.T.E(100-600)ºC	10-6/°C	≤2.5	≤2.5	≤2.5	≤2.5	≤2.5	≤2.5
Ash Content	%	≤0.3	≤0.3	≤0.3	≤0.3	≤0.3	≤0.3

 

Item	Unit	OZIM-1	OZIM-2	OZIM-3
Grain	mm	≤325mesh	≤325mesh	≤325mesh
Bulk density	g/cm³	≥1.68	≥1.78	≥1.85
Specific resistance	µΩ.m	≤14	≤14	≤13
Flexrual strength	Mpa	≥25	≥40	≥45
Compressive strength	Mpa	≥50	≥60	≥65
Ash content	%	≤0.15	≤0.1	≤0.05

 

Isostatic graphite block

Item	Unit	Domestic  material	Import  material
Bulk dengsity	g/cm³	1.8-1.85	1.92
Specific resistance	μΩ.m	≤15	10
Flexrual strength	Mpa	≥40	63.7
Compressive strength	Mpa	≥85
Thermal conductivity	W/(m.k)		128
Ash content	%	≤0.03
C.T.E(100-600)°C	10-6/°C	4.0-5.2	5.5
Shore hardness		≥65	68