The cemented carbide rock drilling teeth violently impact the rock during rock drilling to achieve the purpose of drilling holes in the rock. During this process, the carbide teeth collide and rub against the rock, inevitably causing wear.
If you do not understand the density and influence factors of cemented carbide, it will easily lead to the wrong purchase of cemented carbide. This is a brief introduction of the density and influence factors of cemented carbide.
Cemented carbide sintering is the most basic and critical process in the production process, and it is also the last process. Sintering methods and equipment have a huge impact on the product. Conventional sintering methods include hydrogen sintering, vacuum sintering, hot isostatic pressing etc.
The platy molybdenum electrode can withstand higher current density, and is often used in a feed channel or a melting pool. The heating is relatively uniform, generally does not produce too strong convection, and the erosion of the electrode hole brick is smaller than that of the rod electrode.
Like tungsten, molybdenum is a refractory rare metal with a melting point of 2620 ° C. The bonding force between atoms is extremely strong, and the coefficient of expansion is small, the conductivity is large, and the thermal conductivity is good.
Molybdenum wire has high melting point, high strength and high modulus of elasticity, low expansion coefficient, low vapor pressure, good electrical conductivity, thermal conductivity and corrosion resistance. It is widely used in lighting appliances, vacuum devices, machining and spraying.
Molybdenum is an essential trace element for the human body, animals and plants. It is made of silver-white metal and is hard and tough. In fact, human body contains molybdenum in various tissues, and the total amount in the human body is 9mg