Tungsten Carbide Crucible
Overview
Tungsten carbide is a compound composed of tungsten and carbon. It is a black hexagonal crystal with a metallic luster and a hardness similar to diamonds. It is a good conductor of electricity and heat. Compared with traditional crucible materials such as ceramics, quartz, or graphite. Tungsten Carbide Crucible is a container used for high temperature melting and heating, which can be widely used in metallurgy, chemical industry, ceramics, semiconductor, and other fields. Its purity determines the quality of the smelting crystal. We guarantee to provide customers with the best quality metal products.
Characteristics
Ultra-high hardness
The hardness of cemented carbide can reach 89-95HRA (equivalent to 68-82HRC). When smelting, sintering, or grinding high-hardness materials (such as rare earth metals, magnetic materials, and refractory materials), the inner wall of the crucible is not easily scratched by friction or impact, ensuring a good finish.
Excellent high temperature resistance
The melting point of tungsten carbide is as high as 2870℃, and the melting point of cobalt is about 1495℃. They can still maintain stable physical properties (such as strength and hardness) above 1000℃, and have high thermal conductivity, which can conduct heat quickly and evenly to avoid cracking caused by local overheating.
Strong corrosion resistance
Cemented carbide has good corrosion resistance to most molten metals (such as iron, copper, aluminum, and their alloys), molten salts (such as carbonates, fluorides), and acidic media. WC itself has strong chemical stability and is not easy to undergo replacement reactions with molten materials.
Long service life
Due to its excellent wear resistance and corrosion resistance, its service life is usually 5-10 times that of ceramic crucibles. Especially in continuous production scenarios, it can reduce the frequency of shutdowns to replace crucibles and improve production efficiency.
Dimension
|
Grade |
YG8,YG6, YT15 |
|
Purity |
>99.95% |
|
Diameter |
20-200mm |
|
Density |
18.5-19.3g/cm3 |
|
Height |
30-400mm |
|
Wall Thickness |
2-15mm |
|
Volume |
50-500 mL |
|
Standard |
ASTM B760,GB |
|
Certification |
ISO 9001 |
Application
1. Metal smelting
① Melting and casting of precious metals such as gold, silver, and platinum. Tungsten-cobalt alloys are resistant to corrosion by precious metals, and the cobalt bonding phase is not easy to react chemically reacted with precious metals at high temperatures, avoiding material contamination. At the same time, the smooth inner wall of the crucible can reduce metal residues.
② Because of its strong resistance to corrosion by non-ferrous metal melts, it can be used for the smelting of aluminum, copper, zinc and their alloys, such as melt treatment before aluminum alloy die-casting.
③ Small-scale smelting of steel materials such as high-speed steel and die steel, or laboratory-level preparation of nickel-based high-temperature alloys (such as Inconel).
2. Semiconductor preparation
① Used for sapphire crystal growth, its thermal shock resistance can avoid crucible cracking during crystal growth.
② Due to its low impurity precipitation characteristics, it can remove trace metals in single-crystal silicon to ensure the purity of silicon materials.
3. Powder metallurgy
Used for melting and granulation of refractory metal powders such as tungsten powder and molybdenum powder before pressing. YG crucibles have good wear resistance and can reduce the introduction of impurities caused by powder wear.
Process
① Select WC powder or TiC powder, and cobalt powder according to the crucible usage scenario, and mix them evenly.
② Use high-precision cylindrical molds and press them on hydraulic presses to ensure uniform density.
③ High-temperature sintering and liquid phase sintering, cobalt melts to form a liquid phase, fills the gaps between WC particles, and promotes densification.
④ The outer wall is precisely ground, and the inner wall is electrochemically polished or ultrasonically cleaned to improve the surface finish.
⑤ Comprehensive quality inspection, such as dimensional accuracy, purity, strength, non-destructive testing, etc.
Type
1. YG series crucible
YG series has a bending strength of 1300-1800 MPa, good toughness and impact resistance, suitable for non-ferrous metal (aluminum, copper, cast iron) smelting, precious metal (gold, silver) melting, and laboratory high-temperature synthesis.
2. YT series crucible
The YT series has stronger high-temperature softening resistance and is very suitable for steel material (high-speed steel, mold steel) smelting, sapphire crystal growth, metal powder sintering, etc.
Pictures
Video
Why choose us
24-Hour Response Service
Upon receiving customer inquiries, we promptly and accurately ascertain the product they require, ensuring there are no issues related to time differences. Our customer service team operates around the clock, ensuring that no matter where our customers are located, they receive the same level of attention and service.
High-Quality After-Sales Service
If customers encounter any quality issues after receiving the product or if any items are missing during transit, we will promptly reach out to them and offer a satisfactory resolution. Upon notification of any problem, our team initiates a thorough investigation to identify the root cause and prevent future occurrences. We believe in transparency and will keep our customers informed throughout the resolution process.
customized services
We can customize production to match the customer's drawings, and we are also capable of designing and processing in accordance with the customer's requirements. Furthermore, our team ensures that every customized product meets or exceeds industry standards, maintaining the highest levels of functionality and reliability.
Technical support
We have professional CNC machine tools, rolling machines, sintering furnaces, cutting machines, welding equipment and surface treatment equipment. Moreover, our technicians can design drawings and customize production according to customer requirements. They can also go to overseas customers to carry out on-site installation of equipment.
Case
Wolfram Crucibles, Tungsten Carbide Crucible, Tungsten Cylindrical Crucible To Italy
In mid-to-late December, we concluded a trade order with an Italian customer for Wolfram Crucibles. Our company is a non-ferrous metal product supplier with more than 20 years of professional experience and can provide overseas customers with various high-quality tungsten and its alloy products. We successfully delivered the products to the designated receiving location of the Italian customer within the delivery period. After receiving the products, the customer highly praised our processing technology and service attitude, especially in terms of size and shape, which met their customized requirements.
Product qualification
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