在这样的温度下，粉末内部起反应去除孔隙并得到十分致密的物品。
At such temperatures, the powders react internally to remove porosity and fully dense articles can be obtained.
金属粉末轧制机理与传统的致密金属轧制机理不同，在这里适用的是粉末轧制前后粉末重量相等原理。
Mechanism of metal powder rolling where powder weight keeps constant before and after powder rolling, is different from that of conventional dense metal rolling.
烧结致密法是制取高性能粉末冶金工具钢制品的一个途径。
Sintering densification process is one way to manufacture P/M for producing tool steel products with high properties.
本文利用正交实验等方法在自行设计的实验装置上对粉末烧结体的摆辗致密规律及压实体的性能进行了研究。
In this paper, densification laws of rotary forging powder sintered preforms and the property of components have been investigated with orthogonal experiment method.
在还原过程中，控制反应温度及氯化物浓度可以获得金属致密镀层或超微粉末。
During the reduction process, it is possible to obtain metal with dense layer or ultrafine powder by controlling the reaction temperature and chloride concentration.
分析了粉末烧结材料镦粗和复压工艺的致密效果，提出了闭式模锻工艺设计原则。
The densification effects of upsetting and repressing are compared, and a technology design principle for closed die forging is suggested .
伴随着致密化进程和电流的增大，系统的最大温度区域由石墨冲头末端向粉末内部移动；
With increasing the current and densification process, the position of the maximum temperature moves from the extremes of graphite punches into the interior of powders.
详细地分析了该条件下的坯体致密规律，应力应变分布规律和粉末质点流动规律。
Finally the compacting principle of the billet, strain and stress distribution and powder particle flowing rule are analyzed in detail under this condition.
当设备放电能量有限时，重复压实和双向压实方法是获得致密均匀、高密度粉末制品的有效途径。
When the equipment energy is limited, the repeated compaction and the double direction compaction are efficient ways to manufacture homogeneous and high-density powder parts.
本文提出的金属粉末致密化工艺与传统的压实烧结致密；冷热等静压致密：粉末模锻的致密化工艺不同。
The densification process of metal powder presented here is different from those of powder forging, cold or hot isostatic pressing, and traditional compacting sintering.
结果表明：烧结体的镦粗变形规律与致密体相同。指出了曲柄压力机是粉末锻造工艺的最佳设备。
The results show that the upsetting deformation law of sintered preform is alike with the compact body, and the crank press is the best equipment of powder forging technology.
着重研究了粉末粒度与成型压力对钨铜材料烧结致密度的影响。
The influence of powder grain size and forming pressure are discussed for the performance of W-Cu composites.
分析结果表明，随着球磨时间的延长，粉末固结致密难度增加，所需挤压力显著增大。
The simulation results show that, with increasing the milling time, the densification of powders becomes more and more difficult, and the needed extrusion pressure substantially rises.
研制的等离子喷涂专家控制器可实现对常用喷涂粉末的稳定喷涂并获得均匀致密和高结合强度的等离子涂层。
Stable spraying process and uniform and compact coating with high adhesive strength can be obtained by using the expert controller.
试验结果表明增加放电电压、多次放电、对粉末进行预热，均能提高压坯的平均致密度。
The experimental results indicate that the relative density increases when improving the discharge voltage, increasing the discharge times and heating up the powder before compaction.
最后给出了激光烧结上述金属粉末制造齿轮的加工实例，其致密度达理论密度的82%，而横向尺寸误差仅为1.9%。
A case study on SLS of this Cu-based metal powder to fabricate a gear is carried out. 82% relative theoretical density and transverse dimension error of 1.9% are achieved.
将电磁成形技术用于粉末材料致密度研究中，以PZT粉末为研究对象，对其进行低电压电磁压制成形。
Electromagnetic forming was applied to the powder material compaction, and PZT powder was compacted with low-voltage electromagnetic compaction.
比如说，汽修师在安装挡风玻璃时，粉末就会削弱玻璃的密封性，这就会导致密封不良。
For example, when automotive technicians are installing windshields, the powder weakens the seal of the glass, which may lead to leaks.
弥散铜是一种新型的粉末体电极材料，在加工制备过程中其变形行为会不同于致密体。
The aluminum oxide dispersion strengthened copper (ODSC) is a new type of electrode, and it is deferent from other materials for it is porous.
本论文运用理论研究、物理实验和有限元数值模拟相结合，系统地研究了粉末成形规律及其致密化机制。
In this paper, theoretical research, physical experiment and numerical simulation are combined to systematically study the Aluminum powder forming discipline and compacting mechanism.
通过悬重法测量热变形后粉末冶金钼坯致密度的变化情况。
The density variations of deformed powder metallurgical molybdenum bars were tested by using suspending weight method.
晶粒的细化和圆整化主要是在粉末颗粒内部各相之间的相互作用下完成的，而粉末试样的致密化主要是由粉末颗粒之间的相互作用完成的。
The refinement and rounding of grains are mainly completed by the interaction of internal phases, while the densification of the powder specimen is achieved by the interaction of the powder particles.
在此基础上，提出了粉末体在圆柱形包套内均匀致密的判据，对包套尺寸的确定具有指导意义。
The criterion for uniform compaction of P/M superalloys in cylindrical can was developed. It can be taken as the guide to determine the dimensions of cylindrical can.
矿石中铁、锰矿物主要以粉末状和致密块状两种状态存在。
Iron and manganese in minerals mainly are existed in states of compact and lumpy powder.
研究了水雾化奥氏体不锈钢粉末在致密时的表面化学反应。
The surface reaction of water atomized 304l austenitic stainless steel powder during sintering has been studied.
结果表明：采用复压烧结粉末冶金工艺可提高梯度复合材料的致密度，并能消除梯度层间界面；
The results show that the specific density of the composite can be increased and the gradient boundary layers can be eliminated by second compressing power metallurgy technique.
合金元素铝由于偏扩散产生空洞，降低了粉末钛的烧结致密度。
The following results are obtained:1) Addition of Al may lower the sintering density owing to the partial diffusion of Al during sintering.
合金元素铝由于偏扩散产生空洞，降低了粉末钛的烧结致密度。
The following results are obtained:1) Addition of Al may lower the sintering density owing to the partial diffusion of Al during sintering.
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