Graphite crucible
- Excellent thermal conductivity and high-temperature resistance; low coefficient of thermal expansion during high-temperature use, exhibiting good resistance to rapid heating and cooling.
- Strong resistance to corrosion from acidic and alkaline solutions, demonstrating excellent chemical stability.
Share to:
Working Principle:
Utilizing graphite’s high-temperature resistance, good thermal conductivity, and strong chemical inertness, it absorbs heat through conduction and radiation during metal smelting and transfers it to the internal metal. Simultaneously, it isolates impurities and protects the melt, achieving both melting and heat preservation.
Graphite Crucible
As the foremost graphite crucible manufacturer, we at Haoxing produce durable and enduring graphite crucibles that can stand up to even the toughest foundry or metallurgy uses. With our high-performance graphite crucibles, you’re ensured of success in your operations.
Highlights of Crucible:
• Exemplary Thermal Qualities: Our graphite crucible is characterized by its remarkable ability to conduct heat and withstand extremely high temperatures.
• Outstanding Ductility: It has a low coefficient of thermal expansion, which ensures exceptional stability against thermal shock arising from fast heating and cooling processes.
• Excellent Resistance to Corrosion: The crucible exhibits an excellent level of resistance against acidic and alkali corrosive solutions.
Working Principle
The working principles of the graphite melting crucible are based on the specific qualities of high-purity graphite. It works with the help of three main working processes:
• Efficient Heat Absorption: Using the high thermal resistance and thermal conductivity of the material, the crucible absorbs heat by conduction and radiation when smelting metals.
• Effective Heat Conveying: The heat absorbed then transfers effectively to the metal charge.
• Protective Barrier: Simultaneously, the graphite crucible acts as a shield due to its strong chemical inertness, isolating impurities and protecting the melt to achieve both effective melting and heat preservation.
Our Manufacturing Process
As an established graphite crucible manufacturer, we have a well-defined production process that guarantees our customers top-quality products.
1. Raw Material Selection: Our raw materials include pure graphite powder, which will give us optimal performance and durability for all graphite melting crucibles.
2. Isostatic Pressing: The selected raw materials are pressed using isostatic pressure. This will help create a homogeneous structure in all directions of the graphite crucible.
3. Precise Machining: The pressed graphite is formed into graphite crucibles using CNC machining technology.
4. Quality Control: All the produced graphite crucibles pass through quality control to check whether they meet all the requirements for dimensions and density.
Why Choose Our Graphite Crucible?
Selecting the correct equipment is vital for your business operations. Here is why our graphite crucible stands out.
• Long Life Expectancy: With a design capable of surviving harsh environments, our crucibles provide an extended lifespan and increased value over normal alternatives.
• Thermal Conductivity: With great thermal conductivity in ourgraphite melting crucibles, you are guaranteed quicker melting rates with lower energy costs.
• Reliability: Being experienced ingraphite crucible manufacturers, we provide reliable products that can be used again and again without compromising on quality.
• Multipurpose Usage: Our crucibles can be used for melting various types of metals such as gold, silver, copper, and aluminum.
Technical Specifications
The following table outlines the general specifications for our standard graphite crucible models.
| Specification | Value |
|---|---|
| Fixed Carbon Content | ≥ 99.90% (Actual: 99.96%) |
| Bulk Density | ≥ 1.75 g/cm³ |
| Compressive Strength | ≥ 86 MPa |
| Max Working Temp | 1200°C (Stable under constant heat) |
| Thermal Stability | Resistant to rapid heating/cooling (No cracking) |
| Ash Content | ≤ 0.08% (Actual: 0.02%) |
| Processing Precision | Customizable (Standard tolerance ±1mm) |
Applications
Our graphite melting crucible is widely used across various industries for metal smelting and analysis.
• Precious Metal Refining:Ideal for melting gold, silver, and platinum in jewelry making and refining.
• Non-Ferrous Metal Casting:Perfect for melting and casting copper, aluminum, and zinc alloys.
• Laboratory Analysis:Used in labs for sample preparation and high-temperature chemical analysis.
• Vacuum Sintering: Suitable for sintering processes in a vacuum or protective atmosphere furnace.
Customization Services
As a flexible graphite crucible manufacturer, we understand that different applications have unique requirements. We offer comprehensive customization services for our graphite crucible products:
Specifications and Shapes
We can manufacture everything from small laboratory cups to large industrial crucibles. If you have a specialized furnace, we can also customize the shape to your requirements.
Material and Density
We offer various grades of graphite with selectable densities. We can meet your specific requirements regarding purity and performance.
Surface Treatment
We provide specialized surface treatments and anti-oxidation coatings to significantly extend the lifespan of your graphite melting crucible.
OEM/ODM
We welcome OEM and ODM projects, working closely with you to develop the perfect graphite melting crucible solution for your business.
FAQ
Q1: What is the highest temperature that can be tolerated by the graphite crucible?
A: The maximum heat tolerance of our graphite crucible is up to 3000°C under non-oxidative conditions; therefore, it will serve well for your metallurgical purposes.
Q2: Is it possible to order a specially made graphite melting crucible?
A: Yes, being a reliable graphite crucible manufacturer, we make customized crucibles that can fit into your furnace perfectly.
Q3: How much time is needed to get a specially ordered crucible?
A: It depends on the complexity and the number of the order; please contact us to get more information about your special order.
Q4: How can I protect the graphite melting crucible from oxidation, and how to increase its life?
A: To prolong the life of the crucible, one should not expose it to the open air when it gets hot. We suggest using a protective atmosphere (such as Argon) or coating the crucible with a special anti-oxidation compound.
Q5: Is there any technical support for selecting the appropriate crucible?
A: Sure, being a professional graphite crucible manufacturer, we offer you all-round technical support in selecting the best density, purity, and the size of the crucible.
Get in Touch
Provide a solution
Contact Info
- sales@haoxinggraphite.com
- +86 0719-3011636
- +86 13435442203
- 0719-3011636
Office Address
- Hubei Haoxing High Temperature Metarial Technology Co., Ltd
- Xicheng Industrial Park, Fang County, Shiyan City, Hubei Province
Send Us a Message!
For further queries, please leave us a message in the form below and we will get back to you within 48 hours