Metal machinery manufacturing, machining is the most basic and reliable means of precision machining, mechanical, electrical, electronic and other modern industrial sector plays an important role. Machining technology development, the most recent history is the history of the development of the tool material. The new tool materials can greatly improve cutting production rate, improve processing accuracy, surface quality and expand the processing areas, reduce tool consumption, access to a huge economic benefits. The new tool materials for the development of machinery manufacturing plays a huge role in promoting. Therefore, the development, promotion and use of new materials is an important part of the new machinery manufacturing technology revolution.
Tungsten carbide is a new information tool, due to its high hardness, wear resistance and compressive strength, with more chaos chemical resistance, adhesion and heat resistance, excellent performance, and its tools high hardness materials cutting efficiency 5-10 times high speed steel cutting tools and machining speed steel cutting tools can not be processed, and therefore the tool data, according to a large proportion.

Meet the needs of modern science and technology development, to the precision of the direction, to enter since the seventies, in modern machining, cutting tools with carbide cutting inserts dimensional accuracy remarkable progress, therefore, carbide production manufacturers are constantly advances its product precision. For example, in some developed countries have phased out the U grade carbide precision. Many Carbide Die size has reached micron level precision, and even some have reached the end of ultrafine meter level.
Adaptation requirements produce sophisticated products, better technology and production equipment. Late sixties introduced carbide produced in the field of hot isostatic pressing, and seventies migration to Carbide production in the field of spray-drying technique, cemented carbide production process are a big step forward, In recent years, low-pressure hot isostatic clean burning equipment and technology to make carbide products density close to the theoretical value of up to 99.999%, significantly advances the quality of products.

In order to improve processing efficiency and adapt to the new requirements of automated machine tools, we developed a number of new carbide, such as ultra-fine fine carbide, gradient cemented carbide, carbide duplex, self-lubricating alloy, nanoscale hard alloy, super-hard coating layer of hard alloy. Meanwhile tungsten carbide industry forward depth processing tool areas.
Tungsten carbide consumption in our country although Unfettered unfolded after emerging industry, but carried out rapidly, especially after the reform and opening up, the emergence of independent growing trend. Currently, carbide production in the country has been in the forefront of the world, the product brands, models also more fully, and has many product quality has reached the international advanced level, the output value and profits to grow steadily.

Recently, the Yumen Oilfield Oil Production Plant oil duck children gorge team technical team leader Li Ning serious stare duck K1-10 wellsite conceal his face is delighted: "Since the use of this device, which I often need surgery well made no been ill, and now we can rest assured that in other to promote the use of the well. "
Duck children Gorge Reservoir Oil Production Plant complex geological structure, oil prone eccentric wear phenomenon. Previously, in order to prevent eccentric wear caused by oil bar broken off, oil wells team technical team to install anti-eccentric wear equipment. Employees also use the opportunity well underground work, from a downhole sucker rod section hoop, pump, tubing head thread and other downhole equipment to conduct a comprehensive inspection. However, anti-bias milling equipment still could not really solve the oil well pumping unit section hoop, threaded tubing head appeared eccentric wear problems. Especially in recent years duck children gorge horizontal wells increased, accounting for 70% of new drilling, pump hanging in 1900-2100 meters, displacement of up to 200 meters above the bottom, resulting in serious eccentric wear rod, using up more than 120 days will be break off occurs.

Since the beginning of this year, for the control of oil wells due to the occurrence of breaking off caused by multiple rounds lie well, duck child Gap oil technology group team counting finer benefits account. And repeated the repair and replacement of equipment, is bound to increase costs, affecting the normal production wells.
After then, the duck child Gap oil oil drilling teams to coordinate the Institute of plant and machinery, and the geological structure of the reservoir section hoop, tubing head material such as a comprehensive analysis of the carbide homemade device. Grindability in the well area installed in the underground ring segment added centralizer re-optimize the portfolio by carbide strength and good finish, reduced wear resistance. Duck child Gap oil production crew through an annular segment downhole added centralizer re-optimize the adjustment, prevent breaking off the hoop section, extending well exemption period.

Li Ning said: "We selected four sections hoop and tubing head screw serious eccentric wear wells may be used, the effects were good, especially the duck duck K1-10 and K1-15 well well, since after the equipment installed on the carbide never happened broken off. Tungsten carbide equipment not only solves the problem of partial wear well, but also reduces the cost of repair of oil wells. " Next, duck children gorge on oil production crew will be easy to promote the use of eccentric wear wells carbide devices.

Under the conditions of depressed manufacturing industry, tungsten market also enters normalization ordinary. Tungsten raw material capacity stays in the constant high level. With the application of tungsten waste, end market lowers its dependency on tungsten raw material. Cost of heavy mining is increasing, it results in the irreconcilable conflicts of tungsten market.

Ammonium metatungstate price affecting factors is mainly related to raw material price, below are the analysis of those factors:

1.Tungsten raw material producing capacity is relatively at high level, supply of tungsten concentrate and APT overdue actually demanding which results in the unbalance of supply-demand relationship, it affects tungsten raw material price directly.

2.Tungsten mine cost directly affects price, heavy mining based on state-owned enterprise has high cost; medium and small mine is of lower cost. So tungsten concentrate of low price is sometimes active in the market.

3.Enterprise property of tungsten mine has effects on price as well. More than 50% tungsten concentrate originated from state enterprise tungsten mine. State-owned enterprise actively supports market place. When the price is too low, they will refuse to sell the product to protect rare metal source.

4.Capacity of tungsten concentrate is relatively centralized, more than 55% is from eight major tungsten enterprises. Since last year, three conference of the enterprises also save the market in a certain degree.

5.Through out a year, tungsten market will go through the spring supply and summer break. After spring festival, there is once confused of market, most tungsten raw material companies are reluctant to sell and hold on to see the trend of market. It results in the market’s short supply and increases of price. Summer break is often in July and August, most European countries takes summer break and stops production. The demanding is rare during this period.

6.China Tungsten Industry Association and Ganzhou Tungsten Industry Association has effects on tungsten market as well. When the market is unstable, they will preserve interests of members.

7.Market guidance price of Ganzhou Tungsten Industry Association and China Minmetals Group publicized every month have effect on market price.

8.State Reserve Bureau purchasing and storage of tungsten concentrate directly affects price. Since 2013, purchasing and storage for 5 times of tungsten concentrate, 3 of them have succeeded and affects tungsten raw material price.

9.Fanya Metal Exchange purchased a lot of APT since 2014, over 30000 tons of APT is purchased in 2014. But the price keeps sliding due to the increase of capacity. The stop of purchasing and returned of goods in the market in the beginning of 2015 causes tungsten price slumps in 2015. There is still 29651 tons of APT is stocked in Fanya, the potential effect can not be ignored.

10.Tungsten concentrate trade situation. When price difference is more than profit, capita flows into tungsten concentrate market. The trade operation will also affect market. When price of tungsten concentrate is less than manufacturing cost, traders purchase a lot as inventory then sell it at high price. The sliding of price in June,2016 is the classical operation method of traders.

Besides the above factors, environmental protecting policy, resource tax reform, weather condition in main factory, main stream big enterprises shut down, etc. are all the reasons that will affect price.

It said that China Aerospace Science and Technology Corporation (CASTC) will begin to develop a high-tech aircraft, which is more efficient than the retired space shuttle. It uses a variety of power to take off from the general airport and fly straight into orbit. This power-combination space shuttle will use the combined cycle engine turbojet or turbofan engines allow the aircraft to take off from runway level. As the speed increased, it has been adjusted as the supersonic combustion ramjet. During the combustion ramjet engine set-up phase, the supersonic space shuttle will enter a hypersonic flight in "near space" office, which located at 20~100 km above sea level. Finally, the supersonic space shuttle will fly to the "near space" by using its rocket engine, then fly into the orbit. This space shuttle will not allow trained personnel easier access to space, as compared with the space launch vehicles, space shuttle accelerate its flatness, which will reduce the astronauts when it is subjected to be taken off to physical strain. This means that a version of the space shuttle can be used in space travel. At such a high temperature environment requires very high temperatures resistant metals like tungsten alloy, tungsten, copper, titanium and other materials, it is apparent the rapid progress of tungsten alloy, tungsten, copper, titanium and other materials technology will enable China to have the ability to support research and development in the field of materials technology such as ultra-high performance supersonic space shuttle.

At present, China has already had a variety of advanced solid and liquid fuels in space rockets. Even China disadvantaged in the history of the turbine engine technology, that won’t be a problem. For CASTC, the biggest challenge may lie in the integration of all relevant components into a propulsion package, so as to build a strong structure to withstand various tests such as re-entry.

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According to the 54 companies’ statistics show that, a quarter of cemented carbide production is about 4590.6 tons, down 4.95%; the community did not consider the statistical data, it is estimated the country carbide production of about 5500 tons. Among them, the export cemented carbide 1288.91 tons, an increase of 1.62%; cemented carbide deep-processing products output 768.13 tons, down 17.11 percent. Carbide industry total revenue of 2.83 billion yuan, down 21.12 percent; wherein the main business income of 2.798 billion yuan, down 20.95%; to achieve profits of 168 million yuan, an increase of 25.73%; profit of 18.1355 million yuan, an increase of 66.9304 million yuan; cemented carbide exports $ 65,755,500, down 38.25 percent.

Cemented carbide also called tungsten carbide, tungsten cemented carbide or simply carbide. Cemented carbide (WC) is an inorganic chemical compound containing equal parts of tungsten and carbon atoms. It can be pressed and formed into shapes from fine gray powder, which is considered to be its most basic form. Cemented carbide is approximately three times stiffer than steel, with a Young's modulus of approximately 550 GPa, and is much denser than steel or titanium. It is comparable with corundum or sapphire in hardness and can only be polished and finished with abrasives of superior hardness such as cubic boron nitride and diamond among others, in the form of powder, wheels, and compounds.

Cemented carbide is the preferred material for parts that must withstand all forms of wear (including sliding abrasion, erosion, corrosion/wear and metal-to-metal galling) and exhibit a high degree of toughness. It exhibits high compressive strength, resists deflection, and retains its hardness values at high temperatures, a physical property especially useful in metal-cutting applications.

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