Department of tungsten and molybdenum from the melting point, high hardness of the metal tungsten

Department of tungsten and molybdenum materials different from each other by a high melting point, tungsten high hardness and high ductility , high conductivity copper metal composed of a two-phase composite material dissolved . It combines the respective properties of tungsten and copper , such as high temperature strength , high electrical and thermal conductivity , good resistance to galvanic corrosion resistance, high hardness, low thermal expansion coefficient and a certain plasticity . Further, by changing the composition ratio , control and adjust its respective  tungsten carbide rods  mechanical and physical properties. In addition , it has a new combination of properties due to the generation of both , as it is under high temperature conditions due to the cooling effect of evaporation from the copper contained in the endothermic generated . Therefore , it can be widely used in aerospace , electronics, machinery , electrical and other industrial sectors , especially in some high-tech fields. Tungsten copper material appeared since the 1930s of the last century , in a long time mainly used all kinds of  tungsten electrode  switch electrical contacts . Precisely because of its high strength and low withstand voltage electrical ablation performance , so as to promote the continuous improvement of high-voltage electrical switch voltage levels and use the power of their use, and high-voltage electrical switches become indispensable key material . To the sixties of the last century before , tungsten copper material and gradually as the electric resistance welding and machining of electrodes and space technology as contact with hot gas began to use high-temperature materials .

According to the characteristics of materials, the application of different processing material W and the preparation method of the case

According to the characteristics of tungsten materials, processing materials , different applications have traditionally divided into three categories of cases and preparation methods : ① pure tungsten and tungsten alloy products in the usual sense , including pure tungsten, doped tungsten, tungsten male , ornaments tungsten and tungsten alloys Lai , whose main products are wire and rods . This is the largest tungsten processing timber species and number of a class of products . ② The second category is a high -density tungsten alloy , mainly of tungsten and tungsten nickel-copper- nickel- iron two series , its application is the use of its high density and high strength properties. ③ The third category is tungsten, copper,  tungsten carbide plate  material, particularly tungsten, copper materials, processing materials are tungsten relatively small amount of a class of article , however , there is considerable development in recent years . In recent decades , tungsten copper material , whether done a lot of work from the application, production and  tungsten balls  , and has made many significant progress : Before the 1960s , most of the products are as high tungsten copper , medium voltage electrical switch electrical contacts using a small amount used for resistance welding electrodes ; 60 to the beginning of the last century, the 1970s , the development of EDM , because tungsten copper material excellent resistance to spark erosion effect , and gradually began to be used as electrical spark electrode material processing machine , to the last century, 80 to 90 years , widening their application and mature , a significant amount of growth in the application ;

Tungsten and tungsten silver material, like copper material, but also a fake alloy

Tungsten and silver materials composed of two elements. Tungsten and tungsten silver material, like copper material, but also a fake alloy, its preparation method and tungsten copper materials similar. Tungsten silver conductive materials, thermal conductivity than copper tungsten material is good, other properties similar.  sandblasted tungsten target  silver material made ​​of copper materials are simultaneously used as electrical switches and contacts (contacts) in the 1930s. The late 1950s, the development of  tungsten electrode  rockets, gas temperature and pressure greatly improved, pure tungsten rocket nozzle can not meet the original use of such conditions, when other materials can not meet the requirements.

Jiangxi Anyuan urged the rare earths, molybdenum and other industrial projects to take root

 2013 年 3 月 19 日 Jiangxi Nonferrous Recently, An Yuanming of the company's new 3000 t Zirconia ultrafine powder production line technological transformation project was officially completed trial production; investment exceeds 200 million yuan, annual output of 1,000 tons of molybdenum plating metal products deep processing project officially settled in Anyuan, put into profits and taxes 100 million yuan or more. CNMn. It is understood that Anyuan County scientific planning, meticulous planning, urged industrial projects to take root. CNMn.
Based on rare earths, molybdenum, tourmaline and other advantages of resources, combined with Gan South Sioux district revitalization and development project preparation and reporting requirements, establish and improve the county's project library, focus on a number of planning and preparation involved in infrastructure construction, industrial development and other areas of major projects. CNMn. In order to promote projects to take root, major projects to strengthen the county's investment work in Dongguan, Shenzhen and other places held investment promotion, actively carry out the project docking and tracking contacts, to further improve the services and project management mechanisms, good enterprises in the project put into operation in the process of land acquisition, labor, construction and other aspects of the coordination of services. CNMn. Currently, a group involved in bio-pharmaceuticals, tourism products deep processing and other aspects of major projects have been contracted or floor construction. CNMn.

accelerate the development of a large international conglomerate molybdenum industry

Guo Guanghua recommended the development of national industry development plan molybdenum industry , strengthen the government's macro -control efforts , introduced to promote the integration of the molybdenum plating industry enterprises preferential policies ; in Molybdenum production , strict implementation of the national " molybdenum industry access conditions" of the relevant provisions in the production process should be used in line with national environmental regulations dust , dust collection technology and exhaust comprehensive recycling process to ensure that emissions meet national standards ; accelerate the development of a large international conglomerate molybdenum industry , the introduction of some of the key industrial enterprises tilt Molybdenum crucible industrial policy, measures, programs , through industry consolidation to achieve production capacity to the advantage of enterprises to focus and guide product mix to higher value-added processed products tilt. CNMn.
Enterprise development is inseparable from the support and help local governments , which , Guo Guanghua deep feelings . CNMn. Therefore, his third proposal is "on the financial funds exempt from corporate income tax proposal ." CNMn.
Guang-Hua Guo believes that the financial funds to run as a government to regulate the economy an important economic lever , adjust the industrial structure , optimize resource allocation direction , balance regional differences play an important role. CNMn. At present , all levels of government and relevant departments every year to financial assistance , subsidies, interest payments on loans and other types of financial support in the form of special funds to enterprises, especially SMEs. CNMn. He suggested that in order to better play the financial funds of the enterprise reform and development support, advice fiscal funds exempt from corporate income tax , so that the funds play a larger role

Hualong new chairman Guo Guanghua : three proposals closely molybdenum industry

The People's Congress, Guo Guanghua proposal has three , all about the molybdenum industry and enterprise development . CNMn.
First elected to the National People's Congress of the new Hualong ( 603399 ) Chairman Guo Guanghua is truly "old behalf ," he was elected county deputies , Municipal People's Congress , the provincial People's Congress, on deputies quite understand the responsibilities and obligations deep . CNMn. The People's Congress, Guo Guanghua proposal has three , all about the molybdenum industry and enterprise development . CNMn.
Guo Guanghua first proposal was " processing trade goods on the open molybdenum recommendations ." CNMn. He said that the current policy has led to domestic and international Molybdenum crucible products market fragmentation , the international market price is high, low domestic prices and international high-quality raw materials into less than domestic , is not conducive to the effective use of international resources , is not conducive to curb the exploitation of small mines is not conducive to the protection of domestic resources . CNMn. To this end , he suggested that molybdenum products processing trade can be quota system ; selected qualified excellent processing enterprises ; processing trade in the form of molybdenum or molybdenum processed into ferro molybdenum , molybdenum powder and metal products, and processed into molybdenum molybdenum . CNMn.
According to Guo Guanghua , China's molybdenum plating Industry Status is : small scale, quantity, industry concentration is low ; environmental protection facilities are not matching , process equipment behind , serious environmental pollution ; low productivity, lack of core competitiveness , the lack of new products R & D capability , and China molybdenum resource superpower disproportionate. CNMn. Therefore, his second proposal was " on the strengthening of Molybdenum Molybdenum industry management banning small producers recommendations ." CNMn.

EU anti-circumvention molybdenum wire made ​​final

2013 年 1 月 21, 2011 China Nonferrous network - non-ferrous metal authoritative media platform January 16, 2013, the EU molybdenum wire originating in China to make anti-circumvention final: the molybdenum wire originating in China's anti-dumping measures to expand into Thailand from China Taiwan and re-export of molybdenum wire, the tax rate was 62.5%, but companies can submit an exception request to the European Commission. China Nonferrous network. The products involved in the EU combined tariff codes ex70195100, ex70195900 next. China Nonferrous network.
May 2012, the EU originating in China molybdenum wire for anti-circumvention investigation.They have not found a good way to grow molybdenum disulfide, many try to get the material structure is also inconsistent with the chemical vapor deposition method create molybdenum plating disulfide particles too small to have useful electrical properties. . But in the new approach, they noted molybdenum disulfide "islands" formed in the furnace is easy , blemishes and even dirt block will appear in the base of the furnace . W. Rice University graduate Niina ? Naye Mei said: " with hexagonal boron nitride or graphene is different, molybdenum disulfide difficult nucleation .However, we found that by toward the base adding any artificial edges nucleation process that can be controlled , and, in between these structures , molybdenum disulfide grow better .  new method be grown particles about 100 microns , the nanoscale inside , enough for us to deal with them .