Cobalt Magnetic Value in Quality Control of Tungsten Carbide Products
Carbon Content is very important for the performance of tungsten carbide products ,especially ,for the mass production of mass products ,we have to control it exactly in order to achieve stable quality of the tungsten carbide products,however it is also uneasy to control the carbon content exactly .On the contrary ,if we can control the carbon content by means of controlling the characters of the tungsten carbide products effectively ,so as to keep it in the range of high carbon or low carbon under normal phase,and achieve the optimization and stability of tungsten carbide products quality .However ,it really takes a lot of time and manpower to measure the carbon content,of course ,if take cobalt magnetic value as the guideline ,the problem is solved well.
For the cobalt magnetic value ,we can understand that the ferromagnetic cobalt exists in the tungsten carbide products,the cobalt magnetized in the magnetic field accounts for the weight of total tungsten carbide product tested.Therefore ,magnetic cobalt scale can be directly reflected by the cobalt magnetic value which is also the assessment parameter for the carbon content.The merits to test the cobalt magnetic value as following:
The method to test the cobalt magnetic value is simple and high accuracy ,unrelated to the sample size ,shape and do not need take any process on the sample .
The cobalt magnetic value is available to reflect the performance and influence for the tungsten carbide product when it in WC+r double-phase .
At last the data tested is repeated and stable well . 
