粉末的

Finally the mechanisms and factors of decarburization of WC particles in spraying were explor...

结果表明：纳米结构WC-12Co涂层结构致密，孔隙率低，与基体结合状态良好；纳米粉末在喷涂过程中比微米粉末氧化失碳严重，并发生了不同的纳米晶粒的长大；纳米粉末在喷涂过程中的氧化脱碳程度不仅与喷涂工艺有关，还在很大程度上取决于粉末本身的结构特性。

Our Corp has 12 production lines,5 experient line and all kinds of advanced testing equipments.

拥有资产6000万元，并拥有粉末涂料生产线12条，试验线5条，以及完备先进的粉末涂料专用检测仪器和设备，现年生产各种粉末涂料5000余吨。

A kind of multifunctional and environmental friendly powder putty has been prepared based on coal ash powder and ground calcium Carbonate and so on as fillers and dry emulsion powder and cement as binder, mixed with proper powder additives and other auxiliaries.

以乳胶粉、水泥为粘结料，粉煤灰、重质碳酸钙、石英砂等为填充料，配以适当的粉末状助剂，制得了一种粉末腻子；探讨了乳胶粉、纤维素醚、水泥、粉煤灰以及复合填料的用量对粉末腻子性能的影响，优化出较佳的粉末腻子配方；测试了粉末腻子的理化性能。

The rapid coarsing of precipitates at powder surface through surface diffusion and its application in the improvement of the fracture properties of hipped Rene'95 will be not only important in theory, but also in practice.

粉末表面析出物通过表面扩散快速粗化，以及利用这种粗化改善粉末压坯的断裂性能的发现有很大的实用价值，为利用预处理方法解决Rene′95粉末高温合金中的原始颗粒边界问题，生产低成本高性能的粉末材料奠定了理论基础。

Laiyang Pengyue Machinofacture Co., Ltd. Laiyang Pengyue Co., Ltd. is located in "hometown of pears"--Laiyang downtown, which develops from Laiyang Powder Metallurge Factory and is one of the board organizations of National Powder Metallurge Industry Council with a professional powder metallurge products manufacturing experience of more than 30 years, the products are used in fields as diesel engines, vehicles, motorcycles, home appliance, electrical tools, textile machinery and etc.

莱阳市蓬跃机械制造有限责任公司莱阳市蓬跃公司位于梨乡莱阳市区，前身为莱阳市粉末冶金总厂，是全国粉末冶金行业理事会理事单位，有着三十多年专业生产粉末冶金制品的经验，产品范围包括柴油机、汽车、摩托车、家用电器、电动工具、纺织机械等行业。

The present invention is characterized in that the ammonium metatungstate powders and the cobltic-nitrate powders are respectively dissolved in the water and scattered in the liquid nitrogen to be pre-frozen using a nitrogen spray gun after being mixed and defecated, and then are placed in a freezedryer to be dried vacuumly and finally the powders are obtained. The nanometer powder i.e. the nano tungsten-cobalt composite powder is obtained by reducing the freeze-dried mixed powder in the atmosphere of hydrogen.

该微晶硬质合金的制备方法特征为：将偏钨酸铵粉末与硝酸高钴粉末分别溶于水中，混合澄清后使用氮气喷枪，将其分散在液氮中预冻后置于冻干机中进行真空干燥得到粉末；在氢气气氛中对冻干的混合粉末进行还原得到纳米粉体，即钨钴纳米复合粉体。

B〓C coating possessed 4% of porosity, 12. 8Gpa of bonding strength, 28Gpa of microhardness, and its modulus is up to 230Gpa. It would provide a kind of coating material with excellent properties for many industrial fields.(2) The phase composition of B〓C coating was studied by XPS, XRD and EDS. It was found that: the oxidation activity energy of B〓C powder and coating is different, which is due to the difference of phase composition between them.

用XPS、XRD和EDX研究了碳化硼涂层的相组成，发现碳化硼粉末在涂层形成过程中不可避免的存在分解；比较了碳化硼涂层和粉末在高温下的氧化行为，发现涂层的氧化活化能比粉末要低，这是由于涂层和粉末相组成不同所造成的。

It was believed that either alumina reacted with impurities in the iron powder or the surface diffusion caved the alumina particles to stick to the iron powder surfaces. Another approach was to use the air classifier mill to break up the sintered iron cakes into powders. The morphology of such particles was classified into 4 types in this study: irregular, equalaxed, near spherical, and flaky. The morphological differences were affected by the extent of sintering. The higher the extent of sintering, the stronger the inter-particle bonding.

此外，本实验利用空气分级气流粉碎机将还原后的烧结体进行粉碎，实验结果显示粉碎后的粉末形貌可以分为四种，不规则形、等轴形、近球形和片形，形貌上的差异是由於还原时铁粉烧结程度的不同，烧结程度越高，粉末间键结强度越强，因此粉碎过程中会产生高程度的塑性变形，以至於粉末形貌越来越接近球形，最后因粉末表面大量加工硬化产生破裂，形成片状碎屑。

Carbide in the process of grinding, the powder will produce some waste, recycling all kinds of high-priced steel scrap tungsten carbide tool steel and tungsten, tungsten alloy Trim, grinding material, PCB waste bit, tungsten steel tool, used powder tungsten, tungsten steel powder, tungsten steel scrap, carbide grinding materials, including waste tungsten alloy grinding expected, the film cutter, drill, milling cutter , NC knives, cutting-tungsten steel mold, drawing die, a round cutter, saw, anvil, PCB bit, V-CUT knives, gongs, knives, a high proportion of alloy, non-magnetic alloy, tungsten steel powder, tungsten wire cutter Tungsten steel waste, and other tools.

硬质合金在打磨的过程中，会产生一些粉末废料，高价回收各种硬质合金钨钢报废工具以及钨钢、钨合金边角料、磨削料、废PCB钻头、钨钢工具、废钨粉、钨钢粉末、钨钢废料、硬质合金磨削料、含钨废料、合金磨削料、铣刀片、钻头、立铣刀、数控刀具、线切割钨钢模具、拉丝模具、圆切刀、锯片、顶锤、PCB钻头、V-CUT刀、锣刀、高比重合金、无磁合金、钨钢粉末、钨绞丝等各种钨钢废工具。

When surface of TiO2 powder is enveloped by carbon, the reduction is mainly solid-solid reaction between carbon and titanic oxide.

结果表明钛氧化物的还原是逐级进行的，反应过程伴随着相变，当TiO2粉末和C粉末均匀混合时还原碳化反应主要依赖于CO／CO2传质的气固反应，当TiO2颗粒表面被C包膜时主要是碳和钛氧化物之间的固固反应，当TiO2粉末和C粉末混合压球时则两种反应机理均有。

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