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High temperature resistantant molybdenum crucible

High temperature resistantant molybdenum crucible

Product No.：Mo crucible
Material Grade：99% purity molybdenum
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About us:

Hengze Industry Co., Ltd. is a reputed supplier and exporter specializing in molybdenum products.

Our line of molybdenum crucibles stands out with exceptional resistance to high temperatures and corrosion.

These crucibles are designed to withstand extreme heat conditions, making them ideal for various applications in industries such as metallurgy, electronics, and materials research.

Trust in Hengze Industry Co., Ltd. for top-quality molybdenum crucibles that provide reliable performance and longevity in demanding environments.

Molybenum crucibles physical properties:

1. High temperature resistant: molybdenum crucibles can be mainly divided into sintered molding, press molding, spinning molding, turning forming and welding forming. It is mainly made from turning forming. Molybdenum crucible for vacuum coating refines from Mo-1 powder. Its appropriate working temperature should be within the range from 1100℃ to 1700℃.The melting point of molybdenum crucible for vacuum coating is as high as 2610℃.

2. High purity: Hengze Industry Co., Ltd. is proud to offer high purity molybdenum products to meet the stringent requirements of various industries. Or high purity molybdenum is produced using advanced manufacturing processes and strict quality control measures, ensuring exceptional purity levels. High purity molybdenum is widely used in applications that demand exceptional heat resistance, electrical conductivity, and mechanical strength. Whether you require high purity molybdenum rods, sheets, or other customized products, you can rely on Hengze Industry Co., Ltd. for reliable and top-quality solutions. 99% high purity molybdenum crucible mill test report sample as following:

Mill Test Report

Item Name：Molybdenum Crucible
Heat No：2023003100

Chemical Composition（%）
Si<0.001		Cu<0.0003	Bi<0.001
Al<0.0015		Cd<0.001	Se<0.001
Fe<0.0005		Ca<0.001	W<0.015
P<0.001		Pb<0.001	Ni<0.0007
Mg<0.0001		N<0.002	K<0.003
C<0.002		Cr<0.002	S<0.002
Mn<0.0005
Remark	Mo≥99.95%
Inspector: 01		Date: March, 2023

Mechanical and chemical properties:

Molybdenum distinguishes itself with those unique properties: high melting point, high creep resistance and low thermal expansion.

The properties of the pure molybdenum could also be improved by alloying. According to the application environments and the operating temperatures, we offer the best molybdenum alloy for our customers.

Molybdenum has extremely good resistance to corrosion by numerous acids, liquid metals and molten glass, provided oxidizing agents

are not present. Molybdenum is relatively inert in hydrogen, ammonia, and nitrogen up to about 1100°C.

What is the production process of molybdenum crucible?

The production process of molybdenum crucible involves several key steps. First, molybdenum ore is mined and processed to extract the molybdenum metal. The extracted molybdenum is then purified through a series of chemical and metallurgical processes to remove impurities and achieve the desired purity level.

Once the purified molybdenum is obtained, it is then shaped into the desired crucible form using techniques such as pressing, sintering, and machining. These processes involve shaping the molybdenum into a crucible mold and then subjecting it to high temperatures to achieve the final shape and properties required for its intended use. Finally, the finished molybdenum crucibles undergo quality control checks to ensure they meet the required specifications before being made available for industrial applications.

Overall, the production process of molybdenum crucible involves mining, extraction, purification, shaping, and quality control to produce high-quality crucibles suitable for various high-temperature applications in industries such as metallurgy, glass manufacturing, and semiconductor production.Materials and tools needed for productionMolybdenum crucibles are known for their exceptional heat resistance and high melting point, making them ideal for various applications in industries such as metallurgy, electronics, and glass manufacturing. These crucibles are widely used for melting and casting metals, alloys, and other materials that require extreme temperatures.

Apart from their excellent thermal properties, molybdenum crucibles also exhibit low coefficient of thermal expansion, high density, and good corrosion resistance. These characteristics make them suitable for applications involving reactive materials and aggressive environments.The unique combination of properties possessed by molybdenum crucibles allows them to withstand temperatures exceeding 2,600 degrees Celsius, making them indispensable in high-temperature processes such as crystal growth, sintering, and vacuum evaporation.

Step 1: Preparation of raw materialsTo produce high-quality molybdenum crucibles, specific materials and tools are required. The primary material used is molybdenum powder, which is derived from a multi-step process that involves mining, roasting, and reduction of molybdenite ore.In addition to molybdenum powder, binders and lubricants are also utilized to enhance the plasticity and moldability of the mixture during the pressing stage. These additives help to improve the structural integrity of the crucibles during the subsequent processing steps.Various tools and equipment are employed throughout the production process, including mixers, presses, furnaces, lathes, and grinders. These tools facilitate the shaping, sintering, and finishing of the molybdenum crucibles, ensuring their precise dimensions and smooth surfaces.

Step 2: Powder metallurgyThe first step in the production process involves the preparation of the raw materials. Molybdenum powder, binders, and lubricants are mixed together to achieve a homogeneous blend. This mixture is crucial for ensuring the structural integrity and desired properties of the crucibles.The molybdenum powder is carefully measured and combined with the appropriate amount of binders and lubricants. The mixture is thoroughly mixed in a high-speed mixer to achieve a uniform distribution of the additives within the molybdenum powder.Once the mixture is prepared, it is ready for the subsequent steps of the production process. The quality of the raw materials and the accuracy of the mixing process greatly influence the final product's performance and durability.

Step 3: Cold isostatic pressingPowder metallurgy is a critical step in the production process of molybdenum crucibles. The mixed powder obtained from the previous step is pressed into a mold to give it the desired shape and dimensions.During the pressing process, the mixture is subjected to high pressure to compact the particles and remove any trapped air. This ensures the crucibles' structural integrity and prevents the formation of defects that could compromise their performance.Different types of molds are used, depending on the desired shape and size of the crucibles. The pressing process is carefully controlled to ensure consistent density and uniformity throughout the crucible structure.

Step 4: SinteringAfter the initial pressing, the molybdenum crucibles undergo an additional step called cold isostatic pressing (CIP). In this process, the pressed crucibles are enclosed in a flexible container and subjected to high pressure from all directions.The CIP process helps to further enhance the density and strength of the crucibles, ensuring that they can withstand the extreme conditions they will be exposed to during use. This step is crucial for achieving the desired mechanical properties of the crucibles.Once the CIP process is complete, the crucibles are ready for the next stage of the production process.

Step 5: Machining and finishingSintering is a heat treatment process that involves subjecting the pressed and isostatically pressed crucibles to high temperatures in a controlled atmosphere. This process allows the molybdenum particles to bond together, resulting in a solid and dense structure.During sintering, the crucibles are carefully placed in a furnace and heated to temperatures above the melting point of molybdenum. The controlled atmosphere prevents oxidation and ensures the crucibles' integrity and purity. The sintering process also helps to eliminate any residual binders and lubricants, resulting in a clean and homogenous material. The duration and temperature

Molybdenum crucible applications:

Molybdenum is widely used to produce crucibles and other parts for Sapphire crystal growth and rare-earth melting with its high

temperature resistance, low pollution and other good characteristics.

1.Molybdenum crucibles are mainly used in metallurgy industry, mechanism process industry and rare earth smelting industry;

2.They are more frequently used in crystalloid materials and other burgeoning high-tech industries;

3.The crucibles should be used in vacuum or deoxidize atmosphere and the highest using temperature should be no more than 2000ºC.

Moly crucible property

Molybdenum crucibles are widely used in a variety of industries, including:

Metallurgy: Molybdenum crucibles are used to melt and cast a variety of metals, including aluminum, copper, gold, silver, and platinum.
Rare earth industry: Molybdenum crucibles are used to smelt and refine rare earth metals, such as neodymium, dysprosium, and gadolinium.
Monocrystalline silicon: Molybdenum crucibles are used to grow monocrystalline silicon boules, which are used in the manufacture of solar cells and semiconductors.
Solar energy: Molybdenum crucibles are used to produce solar-grade silicon and other materials used in solar cells.
Artificial crystal: Molybdenum crucibles are used to grow artificial crystals, such as sapphire and quartz.
Mechanical processing: Molybdenum crucibles are used to sinter and anneal metal parts.
Molybdenum crucibles are chosen for these applications because they offer a number of advantages over other materials, including:

High melting point: Molybdenum has a melting point of 2623°C, which makes it suitable for melting a wide range of metals and other materials.
Excellent corrosion resistance: Molybdenum is resistant to corrosion by most acids and alkalis, making it suitable for use in a variety of chemical environments.
Good thermal conductivity: Molybdenum has good thermal conductivity, which helps to ensure even heating of the material being processed.
High strength: Molybdenum is a high-strength material, which makes it resistant to cracking and deformation.

Molybdenum crucibles are typically used in high-temperature furnaces. They are often used in conjunction with other refractory materials, such as graphite or alumina, to protect the crucible from damage.

Here are some specific examples of molybdenum crucible applications:

Melting and casting aluminum alloys for use in the automotive and aerospace industries
Smelting and refining rare earth metals for use in electronics and magnets
Growing monocrystalline silicon boules for use in solar cells and semiconductors
Producing solar-grade silicon for use in solar cells
Growing artificial sapphire crystals for use in LED substrates and other optical applications
Sintering and annealing metal parts for use in a variety of industries

What are the mostly used sizes of molybdenum crucibles?

Molybdenum crucibles are typically available in the following general sizes:

Volume: 5ml - 100ml
Diameter: 10mm - 70mm
Height: 10mm - 100mm

These are general sizes, and specific dimensions may vary depending on the manufacturer and the intended application. For example, crucibles for melting metals may need to be larger and more robust than crucibles for chemical analysis.

Here are some specific examples of molybdenum crucible sizes:

5ml crucible: 10mm diameter x 10mm height
10ml crucible: 15mm diameter x 15mm height
25ml crucible: 20mm diameter x 20mm height
50ml crucible: 25mm diameter x 25mm height
100ml crucible: 30mm diameter x 30mm height

Frequently asked questions and answers:

1. What are molybdenum crucibles?

Molybdenum crucibles are vessels made from molybdenum, a refractory metal known for its high temperature resistance and excellent corrosion resistance. These crucibles are used in high-temperature applications such as melting and casting metals, sintering, and heat treatment processes.

2. What are the benefits of using molybdenum crucibles?

Molybdenum crucibles offer several advantages, including:

High temperature resistance: Molybdenum can withstand extremely high temperatures, making it suitable for use in applications where other materials would fail.

Corrosion resistance: Molybdenum resists attack by most acids and aggressive chemical environments.

Excellent thermal conductivity: Molybdenum efficiently transfers heat, allowing for uniform heating and cooling of materials within the crucible.

High mechanical strength: Molybdenum crucibles have good mechanical stability, ensuring durability and longevity.

3. What industries use molybdenum crucibles?

Molybdenum crucibles are commonly used in industries such as:

Metallurgy: Crucibles are utilized in the production and exploration of various metals and alloys, including steel, superalloys, and rare earth metals.

Electronics: Molybdenum crucibles are employed in the manufacturing of semiconductors, LED lights, and other electronic components.

Materials research: Crucibles play a crucial role in experimental studies, phase transitions, and sample preparations in research laboratories.

4. How should molybdenum crucibles be handled and maintained?

To ensure the longevity and optimal performance of molybdenum crucibles:

5. Handle them with care to avoid impact or shock.

Clean them regularly using mild cleaning agents and avoid abrasive materials that can damage the surface.

Avoid exposure to corrosive substances that could compromise the crucible's integrity.

Store them in a dry, clean place away from moisture and contaminants.

Follow proper heating and cooling procedures to prevent thermal shock.

6. Can molybdenum crucibles be customized?

Yes, molybdenum crucibles can be customized to meet specific requirements. Crucibles can be manufactured in various shapes and sizes, including cylindrical, conical, or rectangular forms, depending on the intended application. Customized features such as lids, handles, or special coatings can also be added as per the customer's needs.

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