Tungsten Carbide Nozzle Welding Procedure

In order to improve drilling efficiency, people invented a kind of nozzle, which is longer and closer to the button. The jet-flow impacts the bottom and disperses, its the fluid up and down do not interfered, which can effectively enhance drilling rate of 28%. However, the nozzle inside structure is too complicate to manufacture by normal compression molding. So some researchers used heat pressing impregnate-powder casting to attempt.

But the materials contain Cu and other soft metals, which decreases the hardness, anti-corrosion of nozzle and shortens the lifespan. Therefore, a new method brazing after compression section molding appeared. It still remains some problems that the strength of soldering seam is not good, which replaced by vacuum welding procedure.

 

 

 

 

 

 

 

 

 

 

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Tungsten Ore Industry Reformation and Development-V

Promote exploration mineral and get more resources

During these years, the exploration of minerals has been commercialized in Ganzhou. The government encourages enterprises to invest in it. Through minerals exploration carried out by geological survey department and companies, the deposit of tungsten in Ganzhou has been proved much bigger than ever before. In June of 2004, China Geological Survey Bureau held the Strategic Seminar on Gannan geological exploitaion Plan, and confirmed Ganzhou as the national strategic area of tungsten exploration. A new project of mineral exploration was launched and supported financially by the Ministry of Land and Resource. A geological research base and post-doctorial work station were set up here by Chinese Academy of Geological Science. They are studying the regulation of tungsten formation on the conditions of special structure. This is a good basis of talents and technologies for minerals exploration.

 

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Tungsten Ore Industry Reformation and Development-IV

Promote the reform of enterprises and develop tungsten industry

As state-owned enterprises reforming, China Minmetals Non-ferrous Metals Co. Ltd. cooperated with Jiangxi Rare Earth and Rare Metals Tungsten Group Corporation and set up a joint venture, Jiangxi Tungsten Group Co. Ltd. in 2002. As a comprehensive group company, most of its mines and smelting companies all have tungsten as their main business area and have a good reputation both in domestic and foreign markets.

Jiangxi Rare Earth and Rare Metals Tungsten Group Corp. has also established some other cooperated companies like Jiangxi TOSHIBA Electro Materials Co.,

Ltd., Jiangxi Xinsheng Tungsten Co., Ltd., Ganzhou Yuanchi New Materials Co., Ltd., Jiangxi Youtai Tungsten Co., Ltd., and so on. Old enterprises radiate great vitality.

Xiamen Tungsten Group Corp. invested and held shares of Ganzhou Tungsten and Molybdenum Materials Factory to form Ganzhou Hongfei Tungsten and Molybdenum Materials Co., Ltd. The new company has moved to the industrial zone and begins to develop and produce new products.

 

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Tungsten Ore Industry Reformation and Development-IV

Promote the reform of enterprises and develop tungsten industry

The private and shareholding enterprises prospect in Ganzhou, whose production occupied 80% of that in the whole tungsten metallurgy and processing industry. There are Chongyi Zhangyuan Tungsten Co., Ltd. whose business covers mining, dressing, metallurgy, down stream products processing, research and development, import and export; Ganzhou Tejing Tungsten and Molybdenum Company which cooperated with the stock listed company of Tianjin Tejing Material Co., Ltd.; Ganxian Shirui Mineral Co., Ltd. which cooperated with foreign companies to do mining in the other province and even abroad; Jiangxi Yaosheng Industry and Trade Co., Ltd. which based on the resources to extend the down stream products processing. These companies are vivid with much more potential of development and find their own position in Chinese tungsten industry as well as become the leading force of Ganzhou tungsten industry.

As an outstanding representative, Mr. Huang Zelan, the president of Chongyi Zhangyuan Tungsten Co., Ltd., was elected as a national model. 

 

Tungsten Powder Manufacturer & Supplier: Chinatungsten Online - www.tungsten-powder.com
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Email: sales@chinatungsten.com
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Tungsten Ore Industry Reformation and Development-III

Strengthen management and enhance enterprises self-discipline

Following the Forum on Development Strategies for Chinese Tungsten Industry held in Oct. 2004, in Changsha, Hunan Province, a seminar on development strategies for tungsten industry in Ganzhou, China, was hosted by Ganzhou government.

Representatives presented many practical and scientific proposals. From Jan. to May of 2005, the price of tungsten concentrate increased from RMB ¥25,000 to RMB ¥135,000 per ton and kept at a steady status. Since 2004, the price of tungsten concentrate has kept at around RMB ¥100,000 per ton.

In Dec. 2005, Ganzhou Tungsten Industry Association was founded. It gives the same offer to the market and tries to keep the market in order. The tungsten industry has gotten a situation of cooperation, self-discipline.

In Sept. 2006, Mr. Liu Cong, the vice mayor of Ganzhou government, led the delegation from Ganzhou tungsten enterprises to attend the 19th annual meeting hosted by International Association of Tungsten Industry, held in Boston, USA. He gave a speech of “Ganzhou tungsten industry and its development”, which introduced Ganzhou tungsten industry to the world.

 

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Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
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