分级电阻式粉末冶金温压加热系统结构的研究

On Structure of Grading Resistor-Heated System of Warm Compaction in Powder Metallurgy

对粉末冶金温压加热系统的结构进行了研究。加热系统采用加热器和恒温器两级加热 ,发热元件为电阻式加热管。粉末在加热器和恒温器中的流动形式为质量流。依据傅立叶热传导公式 ,在边界条件为壁面恒温的条件下 ,计算出加热器和恒温器的几何尺寸。给出了加热器、恒温器和送料系统的结构简图。本加热设备结构简单 ,易于制造。并在此基础上 ,开发出HGWY

We present the scheme of the structure of grading resistor-heated system of warm compaction in powder metallurgy. The structure has the first heater and the second heater which are heated by electrical tubes. Powder is heated in turn in the first heater and the second heater, where there are the mass fluidity of powder under gravity. The dimensions of the first heater and the second heater were calculated from the Fourier′s equation of heat conduction, and the boundary condition was constant temperature. The drawings of the first heater, the second heater and the powder-delivering device were given. The structure of the heat equipment is simple and easy to manufacture. Finally, an exact warm compaction press system HGWY-Ⅱ was developed for the heating system.