the method for preparing the tungsten carbide nano fiber has the advantages of simple and feasible process and low cost of used raw materials and devices, and can be used for mass production.

本发明提供的制备碳化钨纳米纤维的方法工艺简单易行、所用原料及设备廉价，能够规模化生产。

in 2, rock drill rock drill used for cutting tool tip is welded with tungsten carbide cobalt american import cutter.

巖石螺旋鉆头巖石螺旋鉆头所用切削具为尖部镶焊有钨钴硬质合金的美国进口截齿。

a professional manufacturer supply a medium-high quality tungsten carbide saw tips.

专业的提供中、高端硬质合金锯片为客户提供优质产品。

properties of fine tungsten powder and fine tungsten carbide powder from violet tungstic oxide are studied. the result shows that the process of v…

结果表明，紫钨制取工艺先进合理，由紫钨制得的钨粉、碳化钨粉细而均匀，分散性好，是制取高性能硬质合金的优质原料。

this article presents a method and monograms for calculating the rational interference values for fitting the tungsten carbide floating rings in mechanical seals.

本文介绍了炼油厂机泵常用碳化钨动环过盈配合机械密封合理过盈值的计算方法及计算图表。

and therefore, the production of ultrafine tungsten powder and ultrafine tungsten carbide powder from w_(18)o_(49) is both more reasonable and advanced in the conventional process.

以w_（18）o_（49）为原料用传统工艺制取超细钨粉、超细碳化钨粉是合理的、先进的。

oxygens in the lattice lower the specific catalytic activity of tungsten carbide for these reactions.

晶格氧使碳化钨的比活性略有下降。

this paper aims at the shortcomings of normal sintering mould of composite body and, inspired by the structure of tungsten carbide mould, optimizes the mould structure of super hard composite body.

本文针对常规超硬复合体烧结模具的缺点，借鑒硬质合金压制模具的结构形式，对超硬复合体烧结模具结构进行优化。

use of mechanical seal, seal wearing auxiliary made of graphite and tungsten carbide to achieve no leakage and long service life.

采用机械密封，密封磨擦副采用石墨对碳化钨，不泄露，使用寿命长。

the two body abrasion wear characteristic of mn copper nickel alloy matrix cast tungsten carbide composite has been studied using high chromium cast iron as a reference material.

以高铬铸铁为参考材料 ，研究了真空熔铸法制备的锰白铜基铸造碳化钨复合材料的二体磨料磨损特性。

it is offered in several 「grades」 containing different proportions of tungsten carbide and binder (usually cobalt).

它采用几个「档次」含有钨硬质合金和粘结剂不同比例（通常是钴）。

a professional manufacturer supply a medium-high quality tungsten carbide inserts .

专业提供高端硬质合金刀片为客户提供优异品质的产品。

the steel pipes, drawn with the tungsten carbide tools, are of high dimensional accuracy and good surface quality. and the drawing dies have longer service life.

用碳化钨硬质合金拔模拔制的钢管，尺寸公差精度高，表面质量好，而且拔模的使用寿命也较长。

the tungsten carbide produced satisfied the requirements of russian technical standard and can be used for manufacturing drilling instruments and hard metals…

采用该技术生产的碳化钨产品符合俄罗斯的技术标準要求，可用于鉆探工具和硬质合金的生产。

this paper reports the study of the ductile iron roller recombined with tungsten carbide particles on the surface by using centrifugal casting.

本文通过离心铸造法研究了球铁基表面复合碳化钨粒子的轧辊。

the samples of tungsten carbide were prepared from the blue tungsten trioxide and the ammonium paratungstate separately.

用蓝色氧化钨和仲钨酸铵分别制取碳化钨。

this article reports on a method of retrieving cobalt metal and tungsten carbide from hard alloy scrap by the sulphate method.

介绍了用热的浓硫酸处理废硬质合金，回收金属钴和碳化钨的方法。

products: tungsten powder , tungsten carbide powder, cemented carbide alloy.

产品：稀有金属钨粉，碳化钨，超硬质钨钢（硬质合金）

thee mixture of tungsten carbide and cobalt powder is pressed into the required shape and then sintered.

碳化钨和钴粉末的混合物被挤压成所需形状后进行烧结。后进行烧结。

a method to improve the tooth shape of mill roller and adopt the built- up-welding with tungsten carbide on the curved surface of tooth apex has been introduced.

提出了一种改进榨辊齿形并在齿顶弧面上堆焊碳化钨的方法及其加工工艺。

this paper describes the chlorination process of waste tungsten carbide powder.

本文对废碳化钨粉的氯化反应进行了实验研究。

properties of fine tungsten powder and fine tungsten carbide powder from violet tungstic oxide are studied. the result shows that the process of violet tungst…

结果表明，紫钨制取工艺先进合理，由紫钨制得的钨粉、碳化钨粉细而均匀，分散性好，是制取高性能硬质合金的优质原料。

preparation of nano-sized tungsten carbide powder with great surface area is meaningful to its catalytic activity.

因此在碳化钨催化性能研究中，制备粒径小、比表面积大的纳米碳化钨粉末具有着十分重要的意义。

the method has simple operation and cheap raw materials and uses cheap water as a polymerization medium to composite carbon materials and the tungsten carbide in situ.

本发明的方法操作方便，原料廉价，以廉价的水为聚合反应介质，使碳材料和碳化钨原位复合。