Molybdenum Disulfide Is Used in Brake Pad as an Anti-friction Additive

 As a good anti-friction additive, molybdenum disulfide (MoS2) is essential for producing brake pads. The composition of raw materials of brake pads includes four parts: binder, reinforcing fiber, friction performance modifier, and filler. 

There are two type of friction performance modifier. The first one is anti-friction materials. Its addition can improve the friction resistance of the material, reduce noise and friction coefficient. Graphite, molybdenum disulfide, lead, and copper belong to the material. The second one is frictional materials. Its addition can increase the friction coefficient of the material. Most inorganic fillers, some metals and their oxides are included in this category. The friction performance modifier mainly adjusts the thermal stability of the material and its working stability.

MoS2 has advantages of good dispersion, wear resistance and noise reduction, which is widely used in many fields. Its performances in the brake pad as a friction modifier additive as following: 

A.Friction reduction

The regular particle size of MoS2 is 1.1-30 μm with 0.04-0.06 friction coefficient and excellent dispersion to make sure good friction reduction. 

B.Friction enhancement

When the friction temperature of friction material increases sharply, molybdenum disulfide oxidizes to form molybdenum trioxide, which expands with the increase of air temperature and then increases friction.

C.Oxidation resistance and anti shedding

Molybdenum disulfide is slightly acidic. It covers the surface of friction materials to protect other materials from oxidation, so that it is not easy to fall off and has strong adhesion.

D.Expansion

When the friction material is in the high-temperature state of braking, many low-temperature materials such as fillers and resins are easy to be carbonized and burned out, resulting in the increase of internal voids of the materials, while molybdenum trioxide can better make up for it.

E.Reduce the specific gravity

The specific gravity of MoS2 crystal is 4.5-5.2. With the increase of fineness, the specific surface area also increases, and the specific gravity decreases, which reduces the weight of brake pad to a certain extent.

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

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How to Improve the Performance of Molybdenum Glass Melting Electrodes (GME)

The molybdenum has been the best material of electrode for melting high-grade optical glass, glass fiber and refractory rock wool for many years thanks to its advantages of high melting point (2620℃), good conductivity and thermal conductivity, small expansion coefficient, high temperature strength and good resistance to glass corrosion.

However, molybdenum is easy to oxide in oxidizing atmosphere at high temperature, and it will be lost due to the intergranular corrosion of glass liquid on electrode surface. Therefore, it is a common concern to improve the quality and performance of molybdenum glass melting electrodes (GME).

1. Production technology control of moly electrode

Ammonium molybdate is heated to obtain molybdenum trioxide; moly trioxide is reduced to molybdenum powder by hydrogen heating; molybdenum powder to form bank electrode in molds under isostatic pressing equipment; the blank electrode to be sintered, forged and machined into finished products.

2. Control of impurity content

The production of moly electrode requires high-quality molybdenum powder. Impurities will cause cracks or hidden cracks of electrode; C and N contents will cause bubbles in the glass liquid, which will affect the quality of finished glass; metal elements such as Ti, Ni, Cu, CD will make the glass colored.

3. Control of molybdenum powder particle size

It is concluded that the molybdenum powder with medium particles and close to normal distribution is the best material for producing high-quality molybdenum electrode products, according to the production experience and data analysis.

4. Sintering of moly electrode

In order to reduce the temperature difference between inside and outside of blank molybdenum electrode, slow and smooth temperature rise and stage heat preservation system are adopted to prevent hidden cracks caused by excessive thermal stress. Appropriate holding temperature and holding time can ensure fine and uniform grain structure.

5. Forging of moly electrode

Adopting appropriate forging process, especially appropriate forging temperature, final forging temperature, deformation and deformation.

If you have any inquiry of molybdenum electrodes, please feel free to contact us:
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Molybdenum Electrode in Rare Earth Smelting: Use the Current to Extreme

 As an important component of rare earth smelting, molybdenum electrode’s performance and service life are very important. While the uniformity and level of electrode density and impurity content are important factors affecting rare earth smelting. Compared with other materials of electrodes, molybdenum electrode has less smelting metal pollution and longer service life. Therefore, moly electrode is widely used in the rare earth industry now. 

The molybdenum electrodes provided by Chinatungsten Online are formed by isostatic pressing, forging to various of types after sintering with medium frequency furnace and then turning, rolling, planning and milling. Our company has been producing molybdenum electrode for over two decades, and has been committed to improving the performance of moly electrode. We can provide customized products according to customers' requirements and drawings. The development and application of different types of electrodes is an important achievement.

Molybdenum Electrode 
Appearance: Silver gray metallic luster; no defects, such as lose side, lost corner, divide layer and crackle

Density: > 9.8g/cm3;

Purity: Mo≥99.95%

Dimension: Customized based on drawings of clients

Typical applications: Electro-heat equipment in glass fiber kilns

Molybdenum Electrode Plate

Appearance: Dark brown, silver gray metallic luster if washed by alkali 
Purity: Mo≥99.95% 
Density: >10.15g/cm3
Dimension: T(3-25)xW(25-500)xL(25-500)mm or as per clients’ requirements

Typical applications: Various heating equipment of glass fiber kilns, as liquid-flow hole panels, etc. 

Molybdenum Electrode Bar

Appearance: Bright silver gray metallic luster

Purity: Mo≥99.95% 

Density: > 10.15g/cm3; 

Dimension: Dia. (3-100)mmxL(150-1500)mm

Typical applications: Furnace, electric boosting glass kiln electrode, etc.

With the excellent properties of high strength, resistant to oxidation under high temperature, long working life, corrosion resistance and inability to stain glass, these high purity molybdenum electrodes can not only be used in the rare earth industry, but also be used in many fields such as ordinary glass, optical glass, insulation material and glass fiber.

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Wear-resistant Nozzle: TZM Rods for Plastic Injection Molding

Manufacturers of plastic components or tool manufacturers of such components represent a growing market. More companies need more and more types and larger quantities of plastic materials in the industrial field. In 2019 the operating income of China's 15,835 enterprises above designated size was 1,907.748 billion yuan, and this figure continues to rise.

Along with this growing demand, requirements for materials and their performance are also increasing. Plastic manufacturers demand maximum strength for materials. This is why glass and carbon fibers can be integrated into the material to reinforce the particles. In order to improve fire resistance, highly corrosive flame retardants are also used. Therefore, all components in contact with the plastic injection molding must have maximum wear resistance and corrosion resistance! Only in this way can maintenance be minimized during the entire tool life.

In the nature of things, the titanium-zirconium-molybdenum alloy (TZM) has great dimensional stability and is extremely wear-resistant, meeting the requirements of the plastics industry for the two crucial parameters of thermal conductivity and corrosion resistance. Because of this, the nozzles of hot runner systems at home and abroad are basically processed by TZM rods.

The TZM molybdenum nozzle can reduce the size to the minimum and help improve the space efficiency of the compact hot runner system; the runner is small and smooth, which saves materials while realizing a reliable injection molding process and ensuring high-quality products; the nozzle is manufactured from highly conductive material that transfer precise heat to the gate area for minimal gate vestige and excellent gate marks.

Chinatungsten Online has commanded the entire process chain of molybdenum rods from raw materials to finished products. With more than 20 years of professional production experience, we can provide you with the most favorable and high-quality products to help you maintain your industry competitiveness.

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

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