Molybdenum Metal Parts Are Crucial to HIP Furnace Performance

To improve the safety and efficiency of technology and minimize the impact on the environment, the realization of this goal often directly depends on the development of materials. Hot isostatic pressing (HIP) has been at the forefront of this field for decades. Recent technological advances have improved the production efficiency of parts manufactured by HIP technology and reduced costs. Molybdenum metal parts are critical to HIP furnace performance.

HIP is an economical and effective method to improve material properties such as toughness and fatigue life, which can improve the safety and reliability of materials and components, extend their service life, and reduce the risk of failure during operation. It can even repair parts that are already in use but have some internal damage. For example, turbine blades form pores during operation, and these pores can be closed by the HIP process to restore them to normal and put them back into use.

Why molybdenum is important?

The melting point of molybdenum is as high as 2623°C, it has high strength at high temperature, and the cost is lower than other materials. It is the material of choice for hot isostatic pressing. Heating elements, heat shields, furnace racks and other internal equipment are mainly made of molybdenum alloy.

The new HIP furnace has the functions of heat treatment and rapid cooling. It uses a thermal cycle. Due to the existence of thermal expansion stress, pressure is inevitably generated on the heating element and other internal components. Molybdenum has a low thermal expansion coefficient and high thermal conductivity. The combination of the two can minimize the thermal cycle stress and make these complex HIP furnaces have a long service life.

With the rapid increase in the demand for HIP processing and the acceleration of turnaround time, heat treatment companies have also begun to set foot in this industry. However, as AM gradually develops to produce more parts at the same time, it is expected that large vessels with high pressure heat treatment capabilities will be required in the future. Molybdenum has been supporting the development of HIP technology and will continue to play its important role as the industry develops.

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

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Molybdenum Can Increase the Strength and Hardness of Cast Iron

Molybdenum-base alloys and the metal itself have useful strength at temperatures above which most other metals and alloys are molten. The major use of molybdenum, however, is as an alloying agent in the production of ferrous and nonferrous alloys, to which it uniquely contributes hot strength and corrosion resistance, e.g., in jet engines, combustion liners, and afterburner parts. It is one of the most effective elements for increasing hardenability of iron and steel, and it also contributes to the toughness of quenched and tempered steels.

Molybdenum can increase the strength and hardness of cast iron by lowering the pearlite transition temperature. It can also improve the high temperature strength and creep resistance of the material. Compared with molybdenum-free high-chromium cast iron, high-chromium cast iron containing 2-3% molybdenum has significantly higher impact toughness, and is very suitable for use in harsh wear conditions such as mining, grinding, and crushing. 

The performance of these cast iron castings is qualified, and expensive heat treatment is not necessary. It is a cost-effective alternative to other abrasive materials. The reduction in the content of austenite forming elements such as nickel and manganese also minimizes the retention of the low-temperature austenite phase that is a potential cause of premature component failure. 

The application of high silicon-molybdenum ductile iron with a silicon content of up to 4% and a molybdenum content of 1% has aroused increasing interest. They have good strength at temperatures as high as 600°C and become feasible and cost-effective materials for high-temperature applications to replace higher alloyed steel materials, such as turbocharger housings, engine exhaust manifolds and heating furnace components as well as other applications.

Austenitic austempered ductile iron has a unique microstructure, its strength can exceed 1000 MPa (145 ksi), and it has good impact toughness. Their outstanding performance is very suitable for key applications such as large gears and crankshafts required for power generation, ship propulsion and large mining equipment.

If you have any inquiry of molybdenum products, please feel free to contact us:
Email: sales@chinatungsten.com/sales@xiamentungsten.com

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

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Molybdenum Disulfide (MoS2) Applied in High Temperature Grease

Molybdenum disulfide (MoS2) is a well-known solid lubricant that is not only used popularly in aerospace and military applications, but also is common in various lubricating applications. It is widely used in greases and special grease products like pastes, in fluid lubricants such as automotive and industrial gear oils, in solid film lubricants, including but not limited to polishing film, sputter coating, resin bonding and impingement coatings. 

High temperature grease is a high-quality ultra-high temperature grease containing high-component molybdenum disulfide. It is specially made of high-quality base oil and organic thickening agent, no dropping point, does not melt at high temperatures, and does not coke or deposit carbon under high temperature conditions. Moly hi-temp grease has excellent mechanical, thermal stability and chemical resistance, which is suited to the harsh environment with wide contact temperature range and humidity.

Molybdenum disulfide high temperature grease can be applied in various ordinary and anti-friction bearings and all other bearing surfaces, such as sliding surfaces, thrust bearings, rotary joints, heavy-duty thermal sliding sleeves and anti-friction bearings, especially suitable for high temperature lubrication in humid environment and chemical plant equipment. Its applicable range can reach -18°C ~204°C. 

Lithium molybdenum disulfide grease produced with mineral oil, its operating temperature is -20℃~120℃. A better molybdenum disulfide grease uses complex soap, called molybdenum disulfide complex lithium-based grease, its use temperature is -20℃~160℃. At present, the most advanced technology adopts synthetic base oil to produce fully synthetic molybdenum disulfide high temperature grease, its operating temperature is -40℃~220℃.

Chinatungsten Online is a professional manufacturer of tungsten and molybdenum for more than two decades, the molybdenum disulfide we offer is used for various kinds of lubricating greases. The most common specifications are large particle, technical grade, technical fine and super fine. The selected particle size mainly depends on the actual applications. Meanwhile, if you have other requirements, kindly feel free to contact us. 

If you have any inquiry of molybdenum disufide, 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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