Analysis on temperature of metal powder and diamond

Hong

The so-called induction heating procedure putting the heated workpiece on intermediate frequency or lanky frequency AC existing sensor circle. So in the workpiece, due to the induction, the induced current has twin frequency with the induction twist current

Analysis on temperature of metal powder and diamond

The induced present distribution is uneven on the workpiece within the vertical to the behest of force sphere The modern density of chief allocation is halfway zero, while the surface voguish density is great. That is called the graze effect. Higher the existing frequency is, thinner the surface layer cede be Usually any cordial of metal has a certain resistance. So with the functions of voguish concentrated at the surface, it will effect sizeable amounts of joule heat and the surface cede be heated rapidly

The sintering temperature of the spark sintering indirectly reflects the heating temperature of the manganese powder from the mold, the temperature than the metal powder of diamond sintered products at much shorten temperatures, so the spark sintering of sintered diamond products additional appropriate. The spark sintering heating pace for the sequential reasons: First, sintering and spark a special mechanism to unshackle the heat dual with the joint role of the Joule heat; spark sintering of tenacity loss, colossal vigour utilization. Spark sintering heating standard without soaking time, so the higher the correct of temperature measurement methods and measurement components to make the measured temperature is a true meditation of the real-time temperature of the sintered powder, requiring temperature measurement methods and measurement components higher, for the measured temperature to truly reflect the real-time temperature of the sintered powder, necessitate Thermometer has colossal tact Sometimes the temperature measurement devices in a very succinct juncture and the temperature of the metal powder, because the insulation still 4min soaking occasion after the sintering temperature is reached, reflecting the temperature is essentially the true temperature of the sintered powder

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Spark sintering temperature impression as far as viable to actually compass the temperature of the sintering process should do the check temperature and temperature parts, especially the remarkably short sintering time occasions, such as the perfect sintering process in seconds calculation, the temperature the additional important. The progress resistance of the metal powder is extraordinary loose than small, so that the fluidity of the powder, loose powder is too large, can not be pretended Early in the moulding of magnetic materials and Powder Metallurgy products forging which had been used granulation, because the creation of large, into one hundred tons, 10 tons of powder granulation sintering enslave the making of diamond instruments in the process of granulation, can separate metal powder granulation, can with granulating diamond and metal powder diamond nuclei, coated metal powder, granulation of the end can be reduced due to the differences in the percentage caused by mixing inequality and improve the act of the tool

Foe the application of ultra-fine metal powder, granulation is a practical routine If the granulation process is not properly, it leave reduce stunt of the implements In general, after the granulation, it should be broken by cold pressing Then the processes are sintering or hot pressing. If sintering or hot pressing is taken immediately after granulation, the produce is feasible to suppose It is not powder metallurgy after the granulation So the diffusion is heavy to attain and it has gangling porosity To dissuade this phenomenon, folks must first put on broken nibs It requires enough mold firmness The graphite mold may not become suitable. Although the handle to steel mold or carbide mold entrust enlarge costs, but it can earn redemption from the revise mechanism performanceSource:http://wwwmhcmpcom

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