Notable amid the vast array of information and knowledge shared at the 13th Electronic Circuits World Convention in Nuremberg, Germany, was the highly-informative session on advances in drilling and routing, with a focus on the technology of tungsten carbide cutting tools. The session was introduced and moderated by EIPC Technical Director Michael Weinhold.

Growth in applications of high-power LEDs had created an increasing demand for substrates with high thermal conductivity, and resulted in the development of a wide range of insulated metal substrates heavily loaded with ceramic fillers in the dielectric. Consequently, the dielectric layer of these composite laminates tended to be very abrasive, causing rapid wear of conventional tungsten carbide routing cutters. Johann Schmidt of CGT GmbH discussed how diamond coated tools could significantly increase dimensional accuracy and reduce production cost.

Schmidt described a proprietary process for diamond coating of tungsten carbide drills and routers, based on hot-filament chemical vapour deposition. A particular feature of this proprietary coating was that it was built up as a multilayered combination of different crystalline and nano-crystalline layers. Typical coating thickness was 12 microns, although this could be varied depending on tool geometry and diameter. The multilayered structure gave the benefit of resistance to crack propagation, a major limitation of single-layer coatings, and a very smooth surface with low friction and excellent chip-removal characteristics. Hardness of the coating was approximately 9000VPN, compared with about 2100VPN for standard tungsten carbide grades, and coated tools could be used at higher feeds and speeds.

Schmidt showed many comparative examples: On a typical IMS substrate, routing feed could be increased from 4 mm per second to 15mm per second with tool life extended from 7.5 metres to 60 metres. And a coated drill could complete 1,000 hits with no clogging, whereas a conventional drill was clogged with aluminium swarf after only 150 hits.

Diamond-coated tools offered greater dimensional accuracy and cost and productivity benefits from increased production speeds and significantly improved tool life resulting in less machine down-time for tool changing. Clearly, even with the most advanced cutter technology, good tool management, machine maintenance and operating discipline were essential, with minimal spindle run-out, rigid fixturing of the work and powerful vacuum extraction if the best results were to be realised. Some applications, such as using a 2-flute end-mill on IMS, benefited from wet lubrication.


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The Global and Chinese Tungsten Carbide Powder Industry Report 2014 is a professional and in-depth research report on the global tungsten carbide industry with a focus on the Chinese situation. The report provides a basic overview of the industry including definitions, classifications, applications and industry chain structure. Tungsten carbide market analysis is provided for both the international and Chinese domestic situations including development trends, competitive landscape analysis, key regions development status and a comparison analysis between the international and Chinese markets. Development policies and plans are also discussed and manufacturing processes and cost structures analyzed.

Tungsten carbide industry import/export consumption, supply and demand figures and cost price and production value gross margins are also provided. The report focuses on 15 industry players providing information such as company profiles, product picture and specification, capacity production, price, cost, production value and contact information. Upstream raw materials and equipment and downstream demand analysis is also carried out. Tungsten carbide industry development proposals and marketing channels are analyzed. Finally the feasibility of new investment projects are assessed and overall research conclusions offered. With 165 tables and figures the report provides key statistics on the state of the industry and is a valuable source of guidance and direction for companies and individuals interested in the market.


Tungsten Carbide Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-carbide.com.cn
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Tungsten market: tungsten market continued oversupply and weak demand, exert downward pressure on prices, then mine is now reluctant to sell, not cheap shipping, led to the current stalemate market transactions, prices temporarily smooth operation, scrap tungsten steel prices continue to run smoothly, the market weakening turnover from the previous month, the merchant price adjustment underpowered. Scheelite continued strong market sentiment, because tungsten ore and more money in the hands of traders were caught, sell it at a loss, could not move, watching the majority. Expected short-term market or stable tungsten slightly weak.

It is reported that the world's growing demand for tools market. Where Europe, North America and stable growth, especially in Eastern Europe; Asian markets rebounded slightly, the market has great potential, significant growth markets in Latin America, particularly Mexico. Currently the world's cutting tool sales of over 10 billion U.S. dollars, industry developed in Europe, North America, Japan, Australia and the three major market share of 75% to 80%.

In Asia, China is an important market. It is predicted that our tool needs between 70 to 80 billion yuan, of which high-precision, high efficiency, high reliability and modern tools, such as carbide and ceramic superhard tool materials indexable cutting tool consumption is about 12 billion yuan, of which 80% to 85% dependent on imports, the tool used in mold manufacturing imports accounted for more than 90%. In the past year, the tool market has been slow demand growth, mainly due to increased tool life, then there is a user request for the entire manufacturing process to replace a lot of machines and tools. And versatile tool applications increase, a much simpler alternative to the conventional single-function tool. Users will be more emphasis on the future production plant for research and development tool, not only in the field of materials and surface coating technology, but also in the product and its production process tool focusing on aspects of production practices that help to increase the tool manufacturer in the field they are familiar the market competitiveness.


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 It is said that more tungsten will be needed by next year, even as tungsten demand rises steadily at present, the world’s largest non-Chinese tungsten mine will be exhausted then. There is a prediction by analysts that investors should be lining up to fund new mines, not a bit of it.

In this case, a supply shortage could mean much higher prices, leading to handsome profits for those companies that get to market soonest. Actually, tungsten is often called as “rare”, but compared to a minor metal such as rhenium, which is used in super alloys, tungsten market is already around 80,000 tons (80 Kt) per year of tungsten metal content. Therefore, though it may be called “rare” sometimes, however, it is considered as a strategic metal, but not like a rare earth.

 

Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
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Tungsten market: recent tungsten market continued smooth operation, tight liquidity, traders were caught, difficult to operate. The current market sentiment continued strong, thinly traded. Due to the recent tungsten concentrate prices relatively stable, the price adjustment is not strong powder businesses, offer significantly narrowed the gap, the current majority holding steady on the sidelines. Paratungstate stable market as a whole, the price is relatively strong, in general. APT multi-order manufacturers to set production and sales, partially started production line, strict inventory control, short-term maintenance of stability-oriented material.

This week paratungstate stable market as a whole, the price is relatively strong, in general. Paratungstate multi-order manufacturers to set production and sales, partially started production line, strict inventory control, acceptance offer strong at 170,000 yuan / ton in the vicinity, but tight liquidity, manufacturers in order to return the funds, cash transaction prices continued at low price, currently 164,000 yuan / ton to cash transactions, with little change last month.

Short-term market or ammonium paratungstate steady consolidation run up weak, fell sharply and blocked. On the one hand, the market continued oversupply and weak demand, downward pressure on prices, paratungstate prices weak. On the other hand, mining tightened, raw tungsten concentrate prices are relatively strong, ammonium paratungstate bit higher production costs, higher support costs, and the prices fell sharply blocked; coupled with tight liquidity in the market, prices pulled acceptances, cash and promissory larger spread market price range of high cut blocked.


Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
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Email:  sales@chinatungsten.com
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Tungsten market: the market running smoothly, Scheelite, a tungsten iron, powder and other manufacturers outside offer are unchanged. Market demand continues to slump, cautious businesses operate, but with the mining requirements more stringent, businesses still have some of the long-term market expectations. Tungsten steel scrap market running smoothly, some buyers will strong lower prices, but the market is tight resources, cargo operators No price plans. Tungsten scrap material relatively good business mentality is expected no significant short-term market fluctuations.

Currently tungsten concentrate prices remained stable and strong, spent more than 70 degrees tungsten grinding material transaction price is still concentrated in the vicinity of 1.8 yuan / kWh, some buyers strong willingness to lower prices, but the market is tight resources, cargo operators no price plans. Tungsten scrap material relatively good business mentality is expected no significant short-term market fluctuations.

Tungsten steel scrap market running smoothly. Currently scrap tungsten drill not included in the trading price of 187-189 yuan mainstream focus / kg, domestic waste tungsten blade 168-170 yuan / kg, imported blade 178-181 yuan / kg, scrap wire drawing dies 179-181 yuan / kg, steady . The market is still some demand for support, businesses price adjustment is not strong.


Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email:  sales@chinatungsten.com
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Tungsten market: Despite the relatively low intensity tungsten mining, mining continued to be reluctant to sell, but the downstream consumption remained weak, tungsten concentrate price increase fatigue. Tungsten ore prices expected to post or to stabilize, or even slightly lower steady possible. Due to continued weak market demand, combined with the summer holidays approaching, tungsten, iron smelters stopped production increased equipment maintenance.