Graphite Molds for Precious Metal Molding Gold and Silver Ingots Graphite Molds

• Customization: Available
• Density: 1.85 g/cm3
• Specific Resistance: No More Than 8.5
• Model NO.: HBHTRJ057
• Compressive Strenght: 34 MPa Min
• Shape: Cuistomized
• Material: High Purity Graphite
• Carbon Content: High-Carbon
• Grade: Industrial Grade
• Forming Way: Isostatic Graphite
• Type: Graphtie Parts
• Composition: Carbon
• Transport Package: Wooden Case
• Specification: Customized
• Origin: Hebei, China
• HS Code: 6815190090
• Production Capacity: 5000 Pieces/Month

Product Description

A graphite crucible is a container used for melting and casting non-ferrous, non-iron metals such as gold, silver, aluminum, and brass. Their thermal conductivity, high temperature resistance, small thermal expansion coefficient for high temperature applications, and anti strain properties to rapid heating and cooling make graphite crucibles an ideal metal casting solution. They are resistant to the effects of acids and alkaline solutions and have excellent chemical stability.
Synthetic graphite is made by processing petroleum pitch and petroleum coke, which are by products of the oil refining process. It has a purer high fixed carbon content with very few impurities and a low sulfur content.
 

 

Why does graphite can be used for melting metal? 

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.

Since graphite crucibles are resistant to chemicals and corrosion, they are not affected by workshop conditions, characteristics that make them durable and long lasting.

So graphite crucible is suitable for foundries, jewelry industry and other industries where metal melting and casting is necessary.

 

Our graphite dies for continuous casting are ideal for casting precious metals, copper alloy and casting-iron products. Graphite is used in the metal-casting process and allows the metal processing to be monitored continuously, melting from the liquid state to the solid state, to produce wires, tubes, bars and strips or plates.

During casting, temperature is increased to decrease the tensile and yield strength of the metal alloys being cast. The temperature at which metals melt varies depending on the type of metal. Factors that influence casting are the temperature of the alloy being cast and the temperature of the crucible. Graphite crucibles are exceptionally capable of providing the proper vessel for casting due to their high resistance to the effects of increases in temperature, regardless of the type of metal alloy.

 

Continuous casting is a casting process for production of high-quality ferrous and non-ferrous alloys semi-finished products such as tubes, wires, bars and strips. During continuous casting, liquid metal is continuously poured into a bottomless cooled die. Inside the die, the metal stream shell solidifies, with the core still be liquid, then will be drawn off upwards or downwards.

Our graphite dies and molds have excellent thermal conductivity, chemical and thermal resistance, and high strength.
 

Advantages:

•Good thermal Conductivity

•High Strength

•High thermal resistance

•High chemical resistance

•Excellent thermal shock resistance

•Good lubrication properties

•Low thermal expansion

Advanced Equipments: 
 

Graphtie Material Property: 

Property (Typical Value)	TSK	GSK	Unit
Apparent Density	≥1.68	≥1.72	g/cm^3
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	%

 

Property (Typical Value)	HTG-4	HTG-5	Unit
Apparent Density	≥1.78	≥1.85	g/cm^3
Max Grain Size	≤43	≤43	µm
Ash value	≤500	≤500	ppm
Specific Electrical Resistivity	≤12	≤10	μΩm
Flexural Strength	≥35	≥40	Mpa
Compressive Strength	≥60	≥70	Mpa
Shore Hardness	≥40	≥45	HSD
Thermal Expansion (room temperature to 600ºC)	≤4.5	≤4.4	10-6/ºC

 

Property (Typical Value)	HTD-5	HTD-6	HTD-7	HTD-8	HTD-9	Unit
Apparent Density	1.85	1.90	1.82	1.90	1.82	g/cm^3
Max Grain Size	13-15	8-10	8-10	8-10		µm
Ash Content	≤500	≤500	≤500	≤500	≤500	ppm
Purified ASH Content	50	50	50	50	50	ppm
Specific Electrical Resistivity	8-10	8-9	11-13	11-13	11-13	μΩm
Flexural Strength	46	55	51	60	59	Mpa
Compressive Strength	85	95	115	135	121	Mpa
Shore Hardness	48	53	65	70	70	HSD
Thermal Expansion (room temperature to 600ºC)	4.75	4.8	5.8	5.85	5.85	10-6/ºC

Our Services:

Efficiency: Your einquiry will be replied with 24 hours 

Fast Delivery: Our produciton capability and enough mateiral stocks will make sure fast devevery
Customization: We provided OEM services based on your design and drawings

Design Service: Our professional and experienced enigneers team can disign for you, if you need
Quality and Price: We offer you high quality graphite products with the most competitive price

After-sales Services: Tracking service for feedbacks of our graphite products, and we will be responsilbe for quality problem.  

Shipping Methods: