Performance Test of Tungsten Carbide / High Manganese Steel Surfacing Layer
- Details
- Category: Tungsten Information
- Published on Friday, 10 November 2017 23:14
Tungsten carbide / high manganese steel matrix composite is a ceramic particle reinforced metal matrix composite material.
Tungsten carbide particles as a reinforcing body and high manganese steel as a bonding metal between the particles.
Compared with the traditional metal wear-resistant materials, ceramic particle reinforced metal matrix composites can effectively combine the high strength and toughness of metal materials with the high hardness of ceramic particles, and form high-performance materials with overall impact resistance and surface abrasion resistance. With the increase of impact energy, the deformation strengthening effect of high manganese steel increases, which provides better support for particles, and makes the composite show better wear resistance.
Tungsten carbide for surfacing is generally divided into 3 types: one is sintered tungsten carbide with cobalt as binder, the other is characterized by regular appearance, no sharp corner cracks and good weldability; The other is cast tungsten carbide, which consists of WC and W2C eutectic; In addition, there is another kind of coarse grain tungsten carbide, which is made by mixing tungsten particles with carbon black by special process and carbonization in high temperature carbonization furnace. Generally speaking, the second kind of WC wear-resistant layer has the best performance.
Some scholars use oxyacetylene flame deposited on Q235 steel tungsten carbide / high manganese steel surfacing layer, and in order to test the wear resistance of tungsten carbide / high manganese steel composite material. Through the observation found that the work hardfacing overlay in the tungsten carbide for the conditions, the greater the amount of wear better, because the wear resistance of the overlay depends largely on its hardness, the more the tungsten carbide is, the more particles can be loaded, the increase of the number of tungsten carbide also leads to the increase of the eutectic structure around the tungsten carbide, which improves the wear resistance.
It is also found that tungsten carbide particles are evenly distributed in the surfacing layer, and eutectic structure is formed around the particles, and the hardness of the surfacing layer increases with the increase of the number of tungsten carbide particles and the size of tungsten carbide particles; The wear resistance increased with the decrease of the number of tungsten carbide particles and tungsten carbide, and content in 40% ~ 50% of the best wear resistance, the wear resistance of the substrate relative increased by 2.25 ~ 2.75 times.
- Tungsten Carbide Manufacturer & Supplier, Chinatungsten Online: tungsten-carbide.com.cn
- Tungsten News & Prices of China Tungsten Industry Association: www.ctia.com.cn
- Molybdenum News & Price: news.molybdenum.com.cn
- Tel.: 86 592 5129696; Fax: 86 592 5129797; Email: sales@chinatungsten.com
sales@chinatungsten.com
闽公网安备 35020602000140号