粉末

Methods The drying soybean products were triturated. The powder samples were defated by the diethyl ether for 5 hours, and returned by the 80% methyl alcohol solutions with the liquid-solid ratio of 25:1 for 5 hours. The content of the total isoflavone in filtrate was determined by ultraviolet spectrophotometry.

将烘干的豆制品研成粉末，取粉末样品置于索氏抽提器中，用乙醚脱脂5h后，用80%的甲醇溶液以25：1的液固比热回流5h，用紫外分光光度法测定滤液总异黄酮含量。

The main series products cover three aspects such as driven gears of motorbikes, electronikc power dual pinion wheels, automobile chain wheels, pulley wheels, valve guide, seat bush, signal wheels, disc, and bearing covers, electrical rear driven bridge powder metallurgical wheel and speed different gears. The parts also cover series for clutch plates for trains and automobiles air conditioning compressors as well.

产品系列包括：摩托车从动齿轮、电起动双联齿轮系列；汽车发动机链轮、皮带轮及气门导管、座圈、信号轮、相位盘、轴承盖系列；电动车后驱动桥粉末冶金大齿轮及差速伞齿轮系列；火车、汽车用离合器面片、空调压缩机粉末冶金零件系列。

SnAgCu lead-free solder powders were prepared by close-coupled gas atomization. The effects of gas atomization pressure and melt superheat on the powder size and morphologies were investigated.

摘 要：采用紧耦合气雾化法制备SnAgCu无铅焊料合金粉末，研究雾化压力和熔体过热度对粉末粒径和形貌的影响。

Study the result makes clear, normal temperature ball grinds a condition to fall, cu-Cr mixed powder end realizes alloy to change; to grind the temperature inside coal tub when the ball hard under 10 ℃ when, cu-Cr mixed powder end forms Cr the solid solution in Cu.

探究结果表明，常温球磨条件下，Cu-Cr混合粉末难以实现合金化；当球磨罐内温度低于10℃时，Cu-Cr混合粉末形成Cr在Cu中的固溶体。

A Cu2Se powder and an In2Se3 powder prepared or purchased in the market are mixed in a planetary ball mill for ball milling and then cold-press molding so as to make a biscuit with mixed material of Cu2Se and In2Se3, the biscuit is positioned in a closed vacuum sintering furnace, and is sintered and cooled for de-molding in the H2 protective atmosphere, thereby obtaining the copper indium selenide target.

通过制备或市场购买Cu 2 Se粉末和In 2 Se 3 粉末，混合后在行星式球磨机中球磨，而后冷压成型，制得Cu 2 Se和In 2 Se 3 混合材料素坯，将此素坯置于密闭的真空烧结炉中，在H 2 保护气氛中，烧结，冷却后脱模，即得到铜铟硒靶材。

Through research, the relationship among cured depth and concentration of photoinitiator, exposure energy, concentration of monomer, ratio of monomer to cross linker, refractive index of liquid, volume fraction of powders, mean diameter of powders are confirmed.

通过对浆料固化性能的研究，得出了固化厚度随引发剂浓度，曝光能量，单体质量分数，单体和交联剂比例，单体溶液的折射率，粉末体积分数以及粉末粒径的变化关系，并得出相应的最佳值。

The effects of technical parameters on diamond synthesis with powder materials were investigated. The selection principles of technical parameters in diamond synthesis were discussed.

通过实验考察了粉末材料合成金刚石中工艺参数对合成效果的影响，讨论了粉末材料合成金刚石中工艺参数的选取原则。

This paper presents comparisons of four technologies casting,die forging, PM forging and routine PM processing.

简要介绍并比较了用于制备汽车连杆的铸造、模锻、粉末锻造和常规粉末冶金工艺。

At the same time,three dynamic models of cylinder powder green-preform are set up ,which are :die and corefixed on the die shoe , core moving with green-preform, core and die moving downwardin relation to green-preform. The theoretical equations of the green-preform densities andpressing stresses of the three pressing conditions are also derived.

同时建立了凹模与型芯固定在下模座、型芯随压坯一起运动和型芯与凹模相对于压坯向下运动等三种圆环形粉末压坯压制的力学模型，导出了这三种压制条件下的压坯密度与压制压力的理论公式；其结果能够指导粉末冶金模具设计，为发挥模具材料的潜力提供依据。

The production line for both three layer PE pipe and epoxy powder inner anticorrosion pipe came from the reformation of an original production line of three layer PE pipe. The main problems to have been solved are as follows, convert the conventional spray gun deflector into two parts of diversion nozzle and gun wick to suit for different pipe diameters; adopt two stage retrieval equipment to increase powder retrieval rate and improve work environment; enlarge the calibres of gas jet and Venturi pump jet to increase powder output 20% above to ensure the spry coating thickness; design gun pushing device to raise automatic production level.

三层PE管和环氧粉末内防腐管兼容生产线是在三层PE管生产线的基础上改造而成的，主要解决了如下技术问题：将常规使用的喷枪导流体改成导流嘴和枪芯两部分，以适应喷涂不同直径钢管的需要；采用双级回收装置，提高粉末回收率，改善作业环境；加大一次气喷嘴和文丘里泵喷嘴的口径，使出粉量增加20%以上，从而保证涂层喷涂的厚度；设计推枪装置，提高生产的自动化程度。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐