As the exchange rate quotation showed on November 17, the central parity rate of the yuan against the U.S. dollar stood at 6.8700, a six-year low, and implied a depreciation of 10 percent over the past one year or so, considering the parity rate of 6.1162 on August 10, 2015.

The main problems of Chinese tungsten carbide market: Firstly, small-scale enterprises, lower industrial concentration. According to incomplete statistics, 199 carbide enterprises with an average annual capacity of 176 tons, the average annual output is only 86 tons,  more than 1,000 tons is only four enterprises. Secondly, less investment in science and technology, the lack of high-end technical personnel, weakly technology research and development capacity. Chinese tungsten carbide market in science and technology investment in less than 3% sales, scientific and technological research and development level is not high, the original core technology results less. Thirdly, lower product quality level, the product structure to be adjusted. China's tungsten carbide production accounts for more than 40% of the world's total output, but the tungsten carbide sales revenue is less than 20% of the world, mainly due to high-performChinese Tungsten Carbide Market Become Foreign Multinational Strategic Picture's Protagonistance ultra-fine alloy, high-precision high-performance abrasive coating blade, superhard tool materials, Large different products, precision carbide cutting tools, high value-added products such as low yield, lack of deep-processing facilities and varieties due to incomplete.

With the rapid expansion of China's auto industry, auto parts machining demand for cutting tools, China's steel, transportation, construction and other areas of the demand for tungsten carbide is also increasingly strong. Tungsten carbide in the foreign multinational strategic picture, the Chinese market has quietly become a protagonist by the supporting role.

Tungsten carbide drill is based on tungsten carbide powder, cobalt powder as binder by pressure, sintering. Usually containing tungsten carbide 94%, 6% cobalt. Because of its high hardness, very wear-resistant, have a certain strength, suitable for high-speed cutting. But poor toughness, very brittle, in order to improve the performance of cemented carbide, and some on the use of carbonized substrate in the chemical vapor deposition of a layer of 5 to 7 microns of special hard titanium carbide (TIC) or titanium nitride (TIN) Has a higher hardness. Some use ion implantation technology, the titanium, nitrogen, and carbon into the substrate a certain depth, not only improve the hardness and strength, but also in the drill regrind when the injection of these ingredients can move inward. There are physical methods used in the top of the drill bit to generate a layer of diamond film, greatly improving the hardness and wear resistance of the drill.

Selection of Tungsten Carbide Drill Material
According to the processing characteristics of the material, the requirements of the tungsten carbide drill  has the following characteristics: the hardness of the drill must be greater than the hardness of the workpiece to be processed as the workpiece in the workpiece to withstand a great torsion and axial force, it must have sufficient strength and toughness; Due to the toughness of the material to be processed, the cutting edge is required to be sharp enough for cutting, so the tool material must have sufficient anti-wear ability, so as to reduce the work hardening; due to the chemical properties of the workpiece to be high, so the tool material and titanium alloy affinity difference , In order to avoid the travel caused by the proliferation of sticky knife, broken drilling phenomenon.

At present, the types of materials suitable for doing tool extremely wide, including tool steel, carbide, superhard materials.

At first, try to use ordinary high-speed steel drill bit for testing, ordinary high-speed steel drill bit low price, when using coating technology, can significantly reduce the friction coefficient of the tool and the workpiece to improve tool life. However, due to higher speed machine, the use of drill strength is not enough, resulting in the process of drilling bit broken, the effect is not satisfactory.

Tungsten carbide is the latest development of a tool material, suitable for most of the rough finishing of materials, including steel, cast iron, special materials and plastics. To this end, decided to use the tungsten carbide overall drill.

Since the development of China's mold industry, the average annual growth rate of more than 15%, higher than the average value-added domestic GDP more than doubled. In recent years, due to the rapid development of electromechanical, automobile and other fields, China's mold industry has been basically established the status of market economy, but also become the world's new areas of widespread concern.

Some experts believe that restricting the development of China's mold is another major reason for the domestic manufacturing high-precision molds lower capacity. With the continuous development of industry, precision, large-scale, complex, long-life carbide die development will be higher than the total rate of development. At the same time, as in recent years, imports of mold, precision, large-scale, complex, long-life mold majority, therefore, from the reduction of imports, improve the localization rate of view, this kind of domestic high-grade mold in the market share will gradually increase .

At the same time, tungsten carbide punching dies popular in the international market, domestic punching die in China's total import and export of mold occupy the second important position. Tungsten carbide punching dies accounted for 40.33% of the total import and export and 25.12%, has become the field of international stamping die one of the major exporters.

Chinese tungsten carbide punching dies industry is constantly catching up with the world advanced level, and constantly narrowing the technological gap with developed countries, many domestic precision stamping die in the main performance and imported products have been comparable to the overall level of the industry significantly improved, not only to achieve import substitution , And a considerable part of the output to the United States, Japan and other industrialized countries and regions. At present, China's precision punching dies is actively to the international arena, to participate in international competition.

Although there are still some gaps with developed countries, but in accordance with the current development of the domestic industry tips, the next few years, domestic tungsten carbide punching die industry is bound to achieve catch up, to promote the development of the domestic mold industry backbone, enhance the industry as a whole technology Level, to promote the domestic mold industry towards high-end, precision, large-scale, complex development. And requires mold manufacturing technology to better reflect the information technology, digital, fine, high-speed, automation. Industry key enterprises will continue to expand, and will play an increasing role in the industry, public information service platform will be faster development of its various service functions and enhance the productivity of the majority of SMEs will also be the role of More visible.