Graphite Casting Crucible & Stopper for Vacuum Pressure Casting of Precious Metal

Product Description

When melts are melting, casting and molding in very high temperature ranges, the requirements of graphite components rise on material quality, material purity, product design, working lifetime and cost-efficiency. Our graphite melting crucibles, graphite casting crucibles, graphite continuous casting dies are the ideal solution for melting and casting precious metals, copper alloy, and cast-iron products. Our isostatic graphite is used in the metal-casting process and allows the metal processing to be monitored continuously through various stages of melting from the liquid state to the solid state resulting in semi-finished products such as wires, bars, tubes, and strips. Our graphite dies can be used in vertical, horizontal and up-casting.

We apply high purity, high strength, high density graphite materials, equipped with excellent engineers, experts and high precision CNC production equipment to supply our clients with high quality graphite melting crucible, graphite casting crucible, graphite ingot molds, graphite dies and molds for tube, plate, wire.

Advantages:

1. Good thermal conductivity: due to its high thermal conductivity, the melting time can be shorten to save energy and time
2. High strength
3. High thermal resistance
4. High chemical resistance
5. Excellent thermal shock resistance
6. Low thermal expansion
7. Good lubrication properties
8. Dimensional accuracy
9. Outstanding surface quality
10. Low ASH content so that melting metal cannot be polluted during melting and casting process

Why does graphite matieral suitable for smelting and casting for jewelry industry and other industry? 
The crucible is made from high quality graphite which makes the graphite crucible to have a good thermal conductivity, resistant to acidity and alkalinity and a high temperature resistance, therefore, ensuring quality of products.

Graphite crucibles do not contaminate molten metals because the graphite material is fused and does not loosen. The quality of a graphite crucible is determined by how it is manufactured, which influences its structure, density, porosity, and strength.

As the graphite has an excellent heat performance, the time spent on melting is short, therefore saving energy.Their excellent heat performance helps in melting metals quickly for faster production cycles.

 

 
Features: 


Technical Data of Graphite Material: 
Isostatic Graphite

Property	KBD-5	KBD-6	KBD-7	KBD-7B	KBD-8	Unit
Apparent Density	1.85	1.90	1.82	1.82	1.90	g/cm^3
Max Grain Size	13-15	8-10	8-10	13-15	8-10	µm
Ash value	≤500	≤500	≤500	≤500	≤500	ppm
Specific Electrical Resistivity	8-10	8-9	11-13	11-13	11-13	μΩm
Flexural Strength	46	55	51	59	60	Mpa
Compressive Strength	85	95	115	121	135	Mpa
Shore Hardness	48	53	65	70	70	HSD
Thermal Expansion (room temperature to 600ºC)	4.75	4.8	5.8	5.8	5.85	10-6/ºC

Molded Graphite 

Property	KBG-4	KBG-5	Unit
Apparent Density	≥1.80	≥1.85	g/cm3
Ash value	≤500	≤500	ppm
Shore Hardness	≥40	≥45	HSD
Specific Electrical Resistivity	≤12	≤12	μΩm
Flexural Strength	38	41	Mpa
Compressive Strength	81	87	Mpa
Max Grain Size	25	25	μm

Vibration Graphite

Property	TSK	GSK	Unit
Apparent Density	≥1.70	≥1.72	g/cm3
Max Grain Size	≤2	≤0.8	mm
Specific Electrical Resistivity	8-10	≤8.5	μΩm
Flexural Strength	≥12.5	≥15	Mpa
Compressive Strength	≥28	≥35	Mpa
Porosity	≤24	≤20	%
Ash value	≤0.3	≤0.3	%

Advanced Production Equipments 

Strict Quality Control Ensures High Quality Products

  

Safe Packing 


Question and Answer:

Q:Are you a manufacturer or trading company?
A:We are a manufacture for graphite material and graphite machined products.

Q:How can you gurantee the quality?
A:We have the most advanced equipments in our Lab and professional quality control team.We can gurantee each batch of the product with the stable quality.

Q:Can you offer samples?
A: Yes, we offer samples to test

Q: Delivery time?
A:Around 10 days.

Q: Shipping pot
A: Tianjin or main port in China

Q:Payment terms
A:T/T,LC at sight