Product Description

Product Description

Clay Gray Crucible or Graphite Foundry Crucibles are made from a combination of graphite and clay, these crucibles are recommended for melting your precious, or non-precious metals and can handle large batches of material. Their thick inner walls can handle direct heat and open flame foundries. Rated to withstand temperatures up to 850ºC-1600ºC.
 

  • Designed for Melting Gold, Silver, Copper, Brass, Aluminum, and more…
  • Designed to use with Fuel and Medium/High-Heat Induction Furnaces and Kilns
  • Custom size crucibles are also available

 

Product Parameters

Physics

Refractoriness Apparent  Porosity Bulk Density Crushing Strength
≤1700ºC ≤23% ≥1.75g/cm3 ≥8.5MPa

Chemical Composition
 

C% Sic % Al2O3 % SiO2 %
45 25 15 15

Detailed Photos

Use Method of Crucible

> Store crucibles in a dry , warm place or wooden palate

> Do not stock inside another

> Do not roll crucibles

> Use creramic fiber blanket to seal , interspace of cover and sides of furnace

> Use locating bricks in tilting furnaces,to interspace of expansion

> Tangential fire around crucible

> Add flux after metal is molten

> Avoid premature crucible failure by ensuring that the CHINAMFG drain hole is sealed

> For lift-out ,tongs must be placed on lower third crucible . fit tongs evenly on both side

> Check for cracks or other damage during transporting before use

> Base block must be flat , larger than crucible bottom and centered

> Use tongs and ingots should be placed carefully into the crucible

Packaging & Shipping

Method of Crucible Storage

The crucible should be protected from moisture. The warehouse for storing crucibles should be dry and ventilated, and the temperature should be kept between 5ºC~25ºC, and the relative humidity should be 50-60%. The crucible must not be stored on brick soil or cement floor to avoid moisture.

Company Profile

    HangZhou TTWY Manufacturing Co.,Ltd is a company specialized in producing casting equipment. It is located in HangZhou,a beautiful CHINAMFG city,which is convenient in transportation. Especially in graphite products, for expamle, the graphite electrode, graphite crucible, clay graphite crucible,
Isostatic clay graphite crucible, etc;

    With high quality,reasonable price and attentive service the products produced by TTWY have wined trust from clients at home and aboard.

FAQ

Q1: What information should I let you know if i want to get a quotation?

A: The required material dimension (Thickness*Width*Length,diameter*length; if possible, please kindly supply us drawings).

The required more information, such as Surface Condition, Tolerance Request, The Quantity, and other mechanical and technical details.
     
If it is possible, please also provide the application of products, we will recommend the most suitable products with details for confirmation.
 
Q2: How do you gurantee the quality of the products?

A: Each step of production and finished products will be carried out inspection by QC department before storing in the warehouse. NG goods are not allowed in the completed goods warehouse.
 
Q3: Can you guarantee the prompt delivery?

A: Yes, when we get your inquiries, not only we will evaluate the more competitive price, but also we can get the most reasonable delivery time. So the prompt delivery can be guaranteed.

Q4: What is your lead time? 

A : It usually needs about 15- 20 days after receiving the PO. 

Q5 : What is your payments terms?

A : T/T, L/C, Western Union, etc., could be acceptable.

Q6 : Can we visit your company?

A : Yes, for sure, It’s my pleasure to visit our company.

Q7 : What is the shipping cost?

A: The shipping cost is determined by the destination port, weight, packing size, total CBM of the products, we will try best to get the most reasonable shipping cost from the forwarders or express couriers to help you save more money.

Q8 :What is the transportation way?

A:If the Gross Weight ≤45kg, it’s better by express such as TNT, DHL, FedEx,, etc. 
If the Gross Weight between 45kg to 100kg, by express or by air to your nearest airport can be both considered.
If the Gross Weight ≥ 100kg ,you can choose by Air or Sea to the nearest port.

Q9 :How service you can offer your clients? 

A:We provide presales service in various forms, for example, making investment budget,manufacturing plHangZhou,etc.so that customer make a reasonable plan with less cost. Moreover,we will also provide after sale service ,for example,free training about machine applications ect.

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Certification: ISO
Shape: Round
Color: Black
Refractoriness: 1580< Refractoriness< 1770
Material: Clay Graphite
Transport Package: Standard Wooden Packing
Customization:
Available

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cast aluminium

What is the impact strength of cast aluminium?

The impact strength of cast aluminium can vary depending on several factors. Here’s a detailed explanation:

The impact strength refers to a material’s ability to withstand sudden loads or shocks without fracturing or breaking. It is an essential property to consider, particularly in applications where the cast aluminium part may be subjected to impact or sudden loads.

The impact strength of cast aluminium is influenced by various factors, including the alloy composition, casting method, heat treatment, and microstructure. Here are some key points to consider:

  • Alloy Composition:
  • The specific alloy used in the casting process significantly affects the impact strength of cast aluminium. Different alloying elements and their concentrations can influence the material’s mechanical properties, including impact resistance. For example, some aluminium-silicon alloys, such as A356 or A413, are known for their good impact strength.

  • Casting Method and Process:
  • The casting method employed can affect the impact strength of cast aluminium. Certain casting processes, such as die casting or squeeze casting, can result in improved material density and reduced porosity, leading to higher impact strength compared to other methods like sand casting.

  • Heat Treatment:
  • Heat treatment processes, such as solution heat treatment and aging, can improve the impact strength of cast aluminium. Heat treatment helps refine the microstructure, enhance the material’s mechanical properties, and increase its resistance to impact loading.

  • Microstructure:
  • The microstructure of cast aluminium, including the size and distribution of grains and any present phases or inclusions, can influence its impact strength. A fine and uniform microstructure generally contributes to improved impact resistance.

  • Design Considerations:
  • The design of the cast aluminium part can also impact its impact strength. Factors such as wall thickness, geometry, and the presence of stress concentration points can affect the part’s ability to withstand impact loads. Proper design considerations, such as fillets, ribs, or reinforcement, can help enhance impact resistance.

It’s important to note that the impact strength of cast aluminium can vary among different alloy grades and even within the same alloy due to variations in casting and processing conditions. Therefore, it is advisable to consult specific material data sheets or conduct mechanical testing to determine the impact strength of a particular cast aluminium grade for a given application.

Additionally, the impact strength of cast aluminium is typically evaluated using standardized tests, such as the Charpy or Izod impact test. These tests involve subjecting standardized specimens to a sudden impact and measuring the energy absorbed during fracture. The results provide an indication of the material’s resistance to impact loading.

In summary, the impact strength of cast aluminium is influenced by factors such as alloy composition, casting method, heat treatment, microstructure, and design considerations. By selecting suitable alloys, applying appropriate casting techniques, considering heat treatment processes, optimizing the part design, and conducting mechanical testing, it is possible to achieve cast aluminium parts with the desired impact strength for specific applications.

cast aluminium

How does cast aluminium withstand environmental and weather conditions?

Cast aluminium exhibits several characteristics that enable it to withstand various environmental and weather conditions. Here’s a detailed explanation:

  • Corrosion Resistance:
  • One of the primary reasons cast aluminium is highly durable in outdoor environments is its excellent corrosion resistance. Aluminium naturally forms a thin oxide layer on its surface when exposed to air, which acts as a protective barrier against corrosion. This oxide layer prevents the underlying metal from coming into direct contact with moisture, oxygen, and other corrosive elements in the environment.

  • Passivation:
  • Cast aluminium undergoes a process called passivation, where the surface of the metal is chemically treated or anodized to enhance its corrosion resistance. Passivation helps create a thicker and more stable oxide layer, making the aluminium even more resistant to degradation caused by exposure to moisture, salts, and pollutants.

  • UV Resistance:
  • Cast aluminium is also highly resistant to UV radiation from the sun. Unlike some other materials, aluminium does not degrade or become brittle when exposed to prolonged sunlight. This UV resistance makes cast aluminium suitable for outdoor applications, as it can maintain its structural integrity and appearance over time without fading or discoloration.

  • Thermal Stability:
  • Aluminium has excellent thermal stability, allowing it to withstand extreme temperature variations without significant changes in its properties. Cast aluminium can expand and contract with temperature fluctuations, making it less prone to warping or cracking due to thermal stress. This property is particularly advantageous in outdoor environments where temperature changes can be substantial.

  • Lightweight:
  • The lightweight nature of cast aluminium contributes to its ability to withstand environmental conditions. Unlike heavier metals such as iron or steel, aluminium is less susceptible to fatigue or structural damage caused by its own weight. This characteristic makes cast aluminium furniture or structures more resistant to deformation or collapse, even under the forces exerted by wind or other external factors.

  • Durability:
  • Cast aluminium is known for its overall durability and long lifespan. It is a robust material that can withstand the rigors of outdoor use, including impacts, vibrations, and mechanical stress. It is not prone to cracking, splitting, or rotting like wood, making it highly durable in various weather conditions.

  • Low Maintenance:
  • Outdoor products made from cast aluminium require minimal maintenance. The inherent corrosion resistance of aluminium eliminates the need for frequent painting or protective coatings. Simple cleaning with mild soap and water, along with occasional waxing or polishing, is usually sufficient to maintain the appearance and performance of cast aluminium products.

The combination of corrosion resistance, passivation, UV resistance, thermal stability, lightweight construction, durability, and low maintenance makes cast aluminium an excellent choice for outdoor applications. It can withstand environmental and weather conditions while retaining its structural integrity, appearance, and functionality over an extended period.

cast aluminium

How is cast aluminium made, and what are the steps in the casting process?

The process of manufacturing cast aluminium involves several steps. Here’s a detailed explanation:

  1. Pattern Creation:
  2. The casting process begins with the creation of a pattern, which is a replica of the desired final product. The pattern can be made from various materials such as wood, metal, or plastic. It represents the shape and dimensions of the finished cast aluminium product.

  3. Mold Preparation:
  4. A mold is created by placing the pattern into a container and surrounding it with a molding material. The molding material can be sand, plaster, ceramic, or a mixture of these materials. The mold is designed to have a cavity that corresponds to the shape of the pattern.

  5. Mold Assembly:
  6. If the casting process requires multiple parts or complex shapes, the mold may consist of several pieces that are assembled together. This ensures that the final mold can be easily removed from the cast aluminium product.

  7. Melting and Pouring:
  8. The next step is to melt the aluminium. This is typically done in a furnace where aluminium scraps or ingots are heated to their melting point, which is around 660°C (1220°F). Once the aluminium is molten, it is poured into the prepared mold through a gating system, which includes channels and sprues.

  9. Solidification:
  10. As the molten aluminium is poured into the mold, it begins to cool and solidify. The cooling rate and time required for solidification depend on the size and complexity of the cast aluminium product. During this stage, the aluminium undergoes a phase change from liquid to solid, taking the shape of the mold cavity.

  11. Shakeout and Cleaning:
  12. After the cast aluminium has solidified and cooled, the mold is removed, typically by shaking or vibrating the mold. The solidified casting, often referred to as a “green casting,” is then separated from the mold material. The casting is inspected for any defects or imperfections, and excess material, such as risers or gating systems, is removed.

  13. Heat Treatment (Optional):
  14. In some cases, cast aluminium products may undergo heat treatment processes to improve their mechanical properties. Heat treatment can involve processes such as annealing, quenching, or tempering, depending on the desired properties and application requirements.

  15. Finishing Operations:
  16. The final step involves finishing operations to achieve the desired surface finish and dimensional accuracy. This may include machining, grinding, sanding, polishing, or applying coatings or finishes to the cast aluminium product. These processes ensure that the product meets the required specifications and quality standards.

The casting process can vary depending on the specific casting method used, such as sand casting, die casting, or investment casting. Each method has its own variations and requirements, but the overall steps mentioned above provide a general overview of how cast aluminium products are made.

China supplier Clay Graphite Crucible for Melting Silver/ Gold/Aluminium/Steel/Cast Iron  China supplier Clay Graphite Crucible for Melting Silver/ Gold/Aluminium/Steel/Cast Iron
editor by Dream 2024-05-07