Molybdenum Alloy Piercing Plug Is Used for Piercing Seamless Steel Tubes

Molybdenum alloy piercing plug is produced by high-quality molybdenum powder mixing with titanium, zirconium and carbon powders, and processed by mixing, forming, sintering, and machining. The density of finished products is ≥9.4g/cm3. 

As molybdenum metal has many characteristics, such as high temperature resistance, oxidation resistance, high hardness, it is usually used to be the raw material for piercing plug to be used for piercing seamless steel tubes, such as stainless steel, brazing steel, high temperature alloy steel, molybdenum and other special parts.

The plug is actually a vulnerable part in the steel industry. With the increasing scarcity of molybdenum resources and the continuous rise of molybdenum prices, improving its service life and the comprehensive yield in the production process are the main subject of researchers. Fortunately, after 40 years of development, China has made many revisions and optimizations in terms of raw material formula, production technology and cost control. 

Initially, the plus is made of pure molybdenum powder, but its service life is short and people has to make further research. After adding some rare earth elements, the plug can obtain longer service life. The elements include Ti, Zr, C and so on. 

The addition of titanium powder can activate the surface of the molybdenum particles during the sintering process, and can improve the alloying degree and uniformity of finished plug during the sintering process. The effect of adding zirconium powder is similar to that of titanium powder, and the activity strengthening effect of zirconium is greater than that of titanium.

The addition of carbon is very important. Most of carbon forms hydrocarbons with hydrogen in the hydride during the sintering process, and removes the hydrogen in the hydride to the limit, so as to achieve the effect of activation and combustion. Meanwhile, it can interact with titanium and zirconium at high temperatures. Forming two-phase refractory metal carbides TC and ZC can strengthen molybdenum. 

If you have any inquiry of molybdenum alloy plug, please feel free to contact us:

Email: sales@chinatungsten.com/sales@xiamentungsten.com

Tel.: +86 592 5129696/+86 592 5129595

Fax: +86 592 5129797

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Molybdenum Crucible for Sapphire Growth Furnaces Improves Quality of Sapphire

Crystal growth is the basis of many cutting edge technologies, such as sapphire touch screens, LED lighting components, solar cells, and high-power lasers. Only when the manufacturing and material processes are continuously improved, from raw materials to finished products, the changing requirements of the industry can only be met.

Corrosion resistance, creep resistance and high temperature performance make molybdenum made crucibles very suitable for high temperature crystal growth processes. When sapphire is easy to extract, higher sapphire yield and quality can be achieved. The molybdenum-based crucible has heat resistance and a smooth surface, making it durable and cost-effective.

The surface roughness of the molybdenum crucible needs to be higher than 1.6 µm. When the surface of the crucible is rough, the sapphire is not easy to take out and it is easy to damage the crystal. In addition, the crucible will be damaged in the process. Chinatungsten Online's ultra-smooth crucible eliminates these problems. Sapphire manufacturers can benefit from this product because it eliminates complex and expensive processes. In addition, the smooth surface is resistant to corrosion caused by aggressively molten sapphire. This function can extend the service life of reusable crucibles.

Molybdenum crucibles for sapphire growth furnaces are available with a variety of dimensions including round, in numerous standard diameters and wall thicknesses. Custom configurations are available. In addition, many other components for these furnaces are also customized. 

Molybdenum crucibles are in great demand. The reason for this demand is that the development of molybdenum is very complex and involves comprehensive knowledge of handling materials and setting up machines. Chinatungste’s integrated manufacturing process, quality system and metallurgical expertise ensure that we provide high-quality components for the crystal growth industry. if you have got any purchasing plan for them, please feel free to contact us. 

If you have any inquiry of molybdenum crucible, please feel free to contact us:
Email: sales@chinatungsten.com/sales@xiamentungsten.com
Tel.: +86 592 5129696/+86 592 5129595

Fax: +86 592 5129797

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How to Improve the Quality of Molybdenum Plate in the Rolling Process

Molybdenum plate is made from pure molybdenum material with excellent mechanical and physical properties such as high temperature resistance, good thermal and electrical conductivity, and low thermal expansion coefficient. Nowadays, it is widely used in the construction of furnace tooling and parts and as a feedstock for the fabrication of parts for the electronics and semiconductor industries.

To ensure good quality, the manufacturing process is important, especially the rolling process. Starting from the plate blank, and going through the steps of forging-cogging, hot rolling, warm rolling, cold rolling, annealing, and surface cleaning, etc., until the required size is obtained. Compared with vacuum smelting billets, powder metallurgy sintered billets have advantages of few procedures, good mixing, less impurities and qualitied slab, etc.

In the rolling process, the rolled piece undergoes plastic deformation under the action of the rolling force, resulting in work hardening. In the subsequent hot rolling and warm rolling, usually one heating is accompanied by multiple passes, so that the two opposite processes of hardening and softening of recovery and recrystallization exist at the same time, that is, dynamic recovery and dynamic recrystallization occur. 

The recovery and recrystallization that occur in the annealing, holding process and subsequent cooling after the deformation is interrupted or terminated are static recovery and static recrystallization, which are mainly reflected in the cold rolling stage. For rolled products or as raw materials for subsequent drawing, stamping and other processes, the process parameters in the rolling determine the quality, performance and application of the plate itself.

After rolling with a deformation of more than 60%, the density of the molybdenum plate is basically close to the theoretical density of molybdenum, which enables it to be widely used in many fields. After cleaning, the plate’s surface will become silver-gray metallic luster. The finished product has a flat, smooth surface, no heavy skin.

Chinatungsten Online is one of the leading molybdenum plate/sheet suppliers with more than twenty years’ experience. Please contact us if you have got any purchasing plan. 

If you have any inquiry of molybdenum plate, please feel free to contact us:

Email: sales@chinatungsten.com/sales@xiamentungsten.com

Tel.: +86 592 5129696/+86 592 5129595

Fax: +86 592 5129797

Scan QR code of Chinatungsten Wechat platform to follow up the daily latest price and market of tungsten, molybdenum and rare earth.