查询词典 tungsten

Scrap carbide recycling: tungsten steel, tungsten alloy scrap, grinding materials, waste PCB drill bits, tungsten carbide tools, tungsten scrap powder, tungsten carbide powder, tungsten steel scrap, carbide grinding materials containing tungsten scrap, alloy grinding material, milling insert, drill bits, cutter, CNC cutter, wire cutting tungsten steel molds, drawing dies, round cut knife, saw blade, top hammer, PCB drill bits, V-CUT knives, knife handle, high proportion of alloy, non-magnetic alloys, tungsten carbide powder, tungsten wire cutter, such as tungsten tool steel scrap.

废硬质合金回收：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。

The company mainly produces high temperature iodine-tungsten lamp tungsten wire, heating tube heater tungsten wire, film light source with tungsten filament, tungsten and other tungsten wire cutter heterosexual Products.

目前公司主要生产耐高温碘钨灯钨丝，取暖器加热管钨丝，影视光源用钨丝，钨绞丝及其它钨异性产品。

Ammonium paratungstate has a great effect on the properties of the blue tungsten oxide , and blue tungsten oxide has a great effect on tungsten and tungsten carbide powder also; The tungsten carbide powder of good quality can be made from APT or blue tungsten oxide treated by a special process.

仲钨酸铵对蓝钨性能影响较大，而蓝钨物理性能对钨粉和碳化钨粉的性能影响也较大，通过对APT煅烧前或煅烧后进行特殊处理优选蓝钨原料，可以制取优质碳化钨粉。

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。

Fidelity Precision tungsten steel main products: tungsten steel punch, tungsten steel liner sets, forming punch, flat thimble, precision rod, tungsten steel book strip, inserts, tungsten carbide drawing die, shrink tube mold, Jian Kou mold, fire nozzle, tungsten steel knife, tungsten steel blank, tungsten steel box, and other precision parts.

富达精密钨钢主要产品：钨钢冲头、钨钢衬套、成型冲头、扁顶针、精密圆棒、钨钢簿长条、镶件、钨钢拉深模、缩管模、剪口模、射咀、钨钢刀、钨钢毛坯、钨钢方块等精密配件。

The mainly conclusions in our research are as flowing: tungsten trioxide powders with 100 nm primary particle are obtained by spray drying,calcination and wet milling process, and an average size of quadric particle composed of agglomerated particles is 0.64 μm; tungtsen powders with 39 nm grain size and 60 -100 nm primary particle are produced directly from previous tungsten trioxide using one step reduction in hydrogen at 700℃, and an average size of quadric particle of tungsten powder is 2.91 μm; tungsten trioxide and copper tungstate compound powders with 100 nm - 200 nm primary particle are produced using ammonia metatungsten and copper nitrate as raw materials by spray drying,calcination and wet milling process;the compound powders are transformed completely into tungsten and copper compound powders by reduction in hydrogen at 700℃,in which tungsten grain size is 59 nm and copper grain size is 51 nm; primary particle size of compound powders is 80 - 120 nm,and an average size of agglomerated quadric particle is 1.86 μm; tungsten nitride powders with 35 nm grain size are prepared from tungsten trioxide powders by nitrogen treatment thoroughly in pure ammonia at 650℃, and an average size of agglomerated quadric particle is 0.64 μm in normal temperature.

研究结果表明：采用喷雾干燥—焙烧—球磨工艺可以制备出粒度约为100nm的WO_3粉体，它们在团聚后形成的二次颗粒平均粒度为0.64μm；采用一步直接氢还原方法可在700℃下从上述WO_3粉体制备出晶粒尺寸为39nm的、一次颗粒粒度为60-100nm的W粉体，其二次颗粒的平均粒度为2.91μm；以偏钨酸铵、硝酸铜为原料，采用喷雾干燥—焙烧—球磨工艺可制备出一次粒度为100-200nm的WO_3和CuWO_4混合粉体；采用氢还原工艺可在700℃下将这种粉体完全转变为W、Cu复合粉体，其中W的平均晶粒粒尺寸为59nm，Cu的平均晶粒尺寸为51nm；复合粉体的一次颗粒尺寸为80-120nm，在常温下团聚后形成的二次平均粒度为1.86μm；采用纯氨氮化工艺可以在650℃下由WO_3粉体制得WN，其晶粒尺度为35nm，在常温下团聚后的二次平均粒度为6.4μm。

The results show that the increasing weight of tungsten oxide nanopowders and the color of tungsten nanomaterials turns light yellow from dark blue and black by increasing oxygen partial pressure in blown gas; the decreasing weight of tungsten oxide nanopowders and the color of tungsten oxide nanopowders becomes dark blue by the plasma that compares row increase including the hydrogen.The tungsten oxide nanomrods was increasing with chamber pressures. Urged nanoparticles to have the clavate fusion phenomenon in the development process with increasing plasma currents, and increased the nanorods distribution quantity along with the generated time to be more, 12 minutes later presents all nanorods. This system to prepare a monoclinic crystal W18O49 nanorods successfully, each hourly output approximately is 0.33 gram, and monoclinic crystal WO3 tungsten oxide nanoparticles, each hourly output approximately is 5.77 grams, its growth mechanism is Vapor-Solid solidly the physiognomy explanation.

研究结果显示，随著氧分压增加时，氧化钨材料呈现重量增加趋势，其颜色从黑色至深蓝色转为淡黄色；随著电浆气中含氢气比列的增加，氧化钨材料呈现重量减少，其颜色从淡黄色至深蓝色转为黑色；针对於氧化钨奈米棒而言随了腔体压力增加，奈米棒的数量也会随之增加，而电浆电流的提高，促使奈米颗粒在成长过程中有了棒状熔合现象，且随了生成时间的增加奈米棒分布数量越多，直到12分钟后呈现出多是奈米棒；本制程在适当制程条件下成功制备出单斜晶体W18O49奈米棒，每小时产量约为0.33 公克，与单斜晶体WO3氧化钨奈米颗粒，每小时产量约为5.77公克，其成长机制可透过气-固（Vapor-Solid， VS）相法解释。

The company's long-term recovery of various waste a lot of tungsten steel, high-speed steel and tungsten wire cutter, a high proportion of alloys, tungsten alloy trim all kinds of waste, all kinds of waste NC knives, all kinds of waste-cutter, drill PCB waste, all kinds of waste legislation Cutter, Cutter saw waste, scrapped gongs knife, anvil, spent V-CUT knife, trim line cutting, waste Drawing Die, die stamping waste, waste-cold pier, tungsten steel powder, such as tungsten steel, high-speed Waste steel tools, I acquired approach is simple, direct cash settlement is the direct use, price guarantees than others, the long-term-oriented, mold factory, electronic factories, metal processing, machinery processing plant, plant-embryo, electroplating factory , Regardless of the manufacturer, sale, processing, as long as the tungsten-cobalt alloy scrap a large number of recycling, such as your company has goods or in other units can be linked to the sources, welcomed the intermediaries, will be Chongchou!

本公司长期大量回收各种废钨钢，高速钢，钨绞丝，高比重合金，各种废钨合金边角料，各种废数控刀具，各种废铣刀片，废PCB钻头，各种废立铣刀，废锯片铣刀，报废锣刀，顶锤，废V-CUT刀，线切割边角料，废拉丝模，废冲压模，废冷墩模，钨钢粉末，等各种钨钢，高速钢废工具，我公司收购办法简便，直接现金结算，是直接使用，所以价格保证比他人高，长期面向各，模具厂，电子厂，五金加工厂，机械加工厂，模胚厂，电镀厂，不分生产厂家，销售，加工，只要是钨钴合金废料，大量回收，如贵公司有货或在其他单位能联系到货源，欢迎中介，定重酬！

Melting point 3410 ℃, boiling point 560 ℃, relative density of 1935, F the external electronic structure of 5d46s2, in the chemical reaction time is very easy to lose 1-6 electronic, but also can get 1-2 electronic, so oxidation number of 0,± 1,± 2, 3, 4 , 5 and 6, with 6 price of the most stable compounds, such as WO3 does not dissolve in water, the air will form in the tungsten trioxide thin protective layer of tungsten, tungsten with fluorine at room temperature, chemical combination, red hot when there is no moisture and Bromine iodide together, red hot when you can and water reaction WO3, at room temperature reaction of tungsten with aqua regia, but the hot concentrated hydrochloric acid and sulfuric acid can only be played with its weak response, but molten nitrate, nitrite, too Hydrogen peroxide, sulfur steam, steam and other phosphorus can play intense reaction, high temperature can not be carbon, boron and silicon reaction of binary compounds, widely used in industrial tungsten steel and tungsten carbide, pure tungsten filament is used to the system, and X-ray tube Tube heating components, semiconductor components can be prepared tungsten silicide, tungsten industrial production is white or black tungsten ore tungsten ore refining.

熔点3410℃，沸点560℃，相对密度1935，F外围电子结构为5d46s2，在化学反应时很容易丢掉1—6个电子，也能得到1—2个电子，所以氧化数为0、±1、±2、＋3、＋4、＋5和＋6，以＋6价化合物最稳定，如WO3不溶于水，空气中的钨会形成薄层三氧化钨保护层，钨能与氟在室温下化合，红热并无潮气时能与溴、碘化合，红热时还能和水反应生成WO3，室温下钨可与王水反应，但热的浓盐酸和硫酸只能与其起微弱反应，但对熔融的硝酸盐、亚硝酸盐、过氧化氢、硫蒸汽、磷蒸汽等能起激烈反应，高温下不能与碳、硼和硅反应生成二元化合物，工业上广泛使用钨钢和碳化钨，纯钨用来制灯丝、电子管和X射线管的发热元件，硅化钨可制半导体元件，钨工业生产是将白钨矿石或黑钨矿石精炼。

Refractory metal products: including tungsten plate, tungsten rod, tungsten target, molybdenum plates, molybdenum rods, tungsten nickel iron, tungsten copper, tungsten and molybdenum alloys, as well as their deep-processed products.

难熔金属系列产品：包括钨板、钨棒、钨靶、钼板、钼棒、钨镍铁、钨铜、钨钼合金以及它们的深加工产品。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。