Platinum metal metallurgical physical properties make it a spot weldability is poor

Platinum metal metallurgical physical properties make it a spot weldability is poor, platinum products at home and abroad to connect far more riveting process . Developed by the authors of this " single- cycle pulse key projection welding foil new technology" , as well as to achieve the two layers of platinum foil product no cushion welded directly in the trial production of some products can be indicated in the application . Introduced the new technology is the main process  tungsten carbide ball  and connector connection mechanism . Product launch tube projection welding weld head surface topography x50 bump bonding design, direct spot platinum foil electrode and the workpiece surface will produce serious  tungsten carbide plate  which destroys the normal spot . Domestic and international studies show that bonding is difficult to achieve with products direct spot one important reason . After use of projection welding , the current can be in the dyeing of the bump and the internal heat increases the distance between the electrode surface , the temperature gradient along the thickness direction is easily formed . Meanwhile, the projection welding electrode end face than the large multi- spot welding , a significant increase of the contact area of ??the electrode and the workpiece , reducing the welding electrode and the workpiece surface the heating intensity , which are effective in reducing the sticking of the electrode . Further , since the projection welding can reduce the energy input ( reduced welding current ) , reducing grain products grew , the key to improve the welding heat brittleness .

Phase material weldability is poor, therefore , domestic rice Chuan Liu products connections using riveting process

Phase material weldability is poor, therefore , domestic rice Chuan Liu products connections using riveting process . To this end , the development of a single- cycle pulse of platinum foil projection welding of new technology, the two layers as well as the non- cushion foil product key is welded directly . After the lamp is designed with raised bumps , bumps at the current can be concentrated on the internal heat  tungsten filament  the distance between the electrode surfaces , easy to form a temperature gradient in the thickness direction . Meanwhile, the projection welding electrode end face larger than the spot welding , a significant increase of the contact area of ??the electrode and the workpiece , reducing the welding  tungsten carbide rod  and the surface of the heating strength , effectively reduce the sticking of the electrode . Further , since the projection welding heat input can be reduced ( reduced welding current ) , reducing grain products grown , heat welding of the aluminum to improve brittleness . Designed bumps and tested in practice , the choice is less detailed projections play an important part of the benefits . The choice of the shape of the bumps on the suppression of the bump foil tears , generally spherical shape. Spherical bumps having a high strength welded joints , and conical -shaped bumps can remove the residual stress concentration at the bottom and the maximum circumference of the cracks , at the same time , the crush bumps process also easy to produce and move along splash.

Aluminum profiles for the construction industry in recent years has been the rapid development

Because from the production technology, equipment level to greatly improve enterprise management , the quality of non-ferrous metal processing material also has improved significantly. National standard processing materials , the industry standard system integrity, the standard level of developed countries are equivalent, but the overall level of physical quality is uneven , with some typical wood  molybdenum electrode  quality has reached the international advanced level. For example , air-conditioning and refrigeration with brass, before basically rely on imports in recent years, not only meet the domestic demand for the rapid development of air conditioning and refrigeration industry , strongly supports the development of household appliances, power generation and other industries , but also exported to Japan and Europe and other countries for China to become the world's largest air conditioner , refrigerator production , consumer make a  molybdenum crucible . Aluminum profiles for the construction industry in recent years has been the rapid development of its products quality has reached the international level , not only meet the domestic demand for the rapid development of the construction industry , but also a large number of export . At present, China has become the world's first architectural aluminum production, exports , consumer. Thanks to the development of aluminum profiles market competition mechanism , after nearly a decade of market competition and eliminated thousands of manufacturers reduced by the more than 400 product varieties and quality has thus reached a new level. In rare metals and powder metallurgy products, our tantalum powder and tantalum wire processing other materials tantalum and niobium , lithium products such as industrial lithium carbonate, hydroxide monohydrate and tantalum chloride anhydrous crystalline tantalum, lithium metal , with its products quality able to meet and exceed the technical requirements of the standard , endorsed, export volume rising domestic and foreign users .

Tungsten Industry Association for the past two years, the tungsten market movements were carefully analyzed

Tungsten Industry Association for nearly two years to conduct a careful tungsten market trend analysis, that there are three major characteristics: First Scheelite 100,000 yuan / ton price has been on the market psychologically and downstream enterprises to accept and in fact recognized ; Second, market pricing has the right to speak turned upstream and downstream enterprises are gradually transition  molybdenum electrode  ; Third, the supply and demand sides and slowly get rid of impulsive feeling , psychologically more mature , and in the price has been stable . With this foundation , the steady growth in demand , under the premise of binding supply environment at the same time to enter the market once the demand ,  sandblasted tungsten target  the price of tungsten is in the affirmative , the inevitable rise in the price of tungsten manifested . Kong Zhaoqing pointed out that the stability of demand, supply constraints of mature psychological, as well as downstream into harmony on four major factors supporting the market and prices. China's influence on the global tungsten market is bound to increasingly enhanced. The reason why in the last two years the city of tungsten high, some experts believe is the result of many factors , both countries to strengthen macro- economic role to maintain stable development , but also to strengthen its own adjustments , price reasonable return factors , while there are other factors at home and abroad .

Mineral resources of copper, tungsten, rare earth and other eight industries

The duo opened eight "Golden Flower" in the next three years to achieve the transformation of industrial mineral resources. Mineral resources of copper, tungsten, rare earths and other eight industry will achieve sales revenue of 190 billion yuan,  molybdenum electrode  raw material and high-tech industrial base. According supportive policies, the introduction of favorable policies in investment management, resource use, financial support, construction sites, equipment support and technical innovation tax credit support and other aspects. The deep processing of  Tungsten copper alloy  as a provincial bank and corporate support for the joint meeting focused on the deep processing of mineral resources, technological innovation process inherent taxes, etc. to give policy support. Meanwhile, the rational utilization of mineral resources in the deep-processing projects, the construction of basic conditions, priority will be included in the province's major construction projects, land consultative meeting arranged construction land.