bpec meaning in English
北京石油化工工程公司
Examples
- Thus atom diffusion is a ' key factor to pecht . how do atoms diffuse under bpec heating
因此，原子的扩散是决定脉冲大电流热加工的重要因素。 - Comparing shrinkage under bpec and conventional heating , we can conclude that obvious shrinkage occurred at relative lower temperature and velocity of shrinkage was greater under bpec heating
比较脉冲大电流和辐射加热烧结过程中样品的收缩，结果表明前者在相对较低的温度即发生明显的收缩，并且收缩速率大于后者。 - The samples were welded at 800 , 900 . d _ ( cu ) and dni at contacting line increased with increase of welding temperature . and atom diffusion at contacting line welded by bpec heating was much quicker than by radiation heating
其它条件相同时，改变装模方式以获得不同的加热条件和电场条件，结果表明，无模套时接触面处cu和ni的扩散系数比有模套时大。 - And is it the same as under radiation heating ? do the special electric and magnetic fields produced by bpec accelerate atom diffusion ? understanding the above questions fully is a key to expose the mechanism of pecht
在脉冲大电流加工过程中原子是如何扩散的，与一般的加热烧结、焊接是否一样，脉冲大电流形成的特殊电场及磁场是否对原子的扩散有大的推动作用，弄清这些问题成为进一步揭示脉冲大电流热加工机理的关键。 - In this paper , three unique models were designed to research atom diffusion at interface , contacting line and joining point under bpec heating and compare with it under radiation heating in order to find out if bpec speed atom diffusion . the first model was aimed to research atom diffusion at interface under bpec heating . experiment condition of bpec diffusion welding sheet cu and ni : direct diffusion welding , at a pressure of l0mpa , welded at 750 ~ 900 , with heat rate of 200 ~ 400 / min for 10mm , on / off of 6 / l ~ 48 / 8 , with die or not , vacuum of 6pa
本文设计出三种样品预构件，研究脉冲大电流加热条件下片状材料、线状材料和球形颗粒之间的原子扩散过程，弄清脉冲大电流加热条件下原子扩散与一般烧结和焊接过程中原子扩散的区别，以证实特殊的电场和磁场是否对原子的扩散有推动作用，揭示脉冲大电流加热条件下原子的扩散过程，探索脉冲大电流热加工技术快速高效的原因。