WO3, a n-type oxide semiconductor, is regarded as the best sensing material for fabrication of H2S gas sensor to realize the monitoring and detection of H2S gas. You know, H2S gas is an air pollutant, which not only seriously threatens human health, but also affects industrial production. In industry, the maximum allowable mass concentration of H2S in air is 0.01 mg/L. So, there is an urgent need to develop a H2S gas component.

WO3 thin film is regarded as the best sensing material for the fabrication of sensitive and selective NO2 gas sensor. Some experts have fabricated NO2 gas sensor using WO3 thin films grown directly on to a soda-lime glass substrate without assistance of any seed layer by a simple and a facile hydrothermal technique.

WO3 has excellent sensitivity and fast response speed to NH3 - colorless gas with strong pungent odor, so it is often made into a semiconducting gas sensor for NH3 detection. And therefore, WO3-based NH3 gas sensor has become one of the key research projects of scholars at home and abroad.

Solid tungsten carbide drill has the characteristics of high efficiency, high accuracy, high degree of finish, high hardness, high strength, high wear resistance, bending resistance, breakage resistance, and long service life. And such a drill is easy to use, safe, reliable, economical and labor-saving. So, the tungsten carbide drill can reduce the processing cost of each hole while ensuring the drilling quality and drilling rate of the hole.

Tungsten carbide acicular drill, which is specially designed for a new drilling method - small-diameter drilling method, is suitable for use in medium-hard rock formations of 6-8 grades. Such an acicular drill bit has higher drilling efficiency, better quality, lower cost and less material consumption than ordinary alloy drill bits and steel drill bits.

Tungsten carbide rotary file is made of heat-treated tungsten carbide with characteristics of high finish, high accuracy, high efficiency and long working life to process a variety of metal and non-metal, such as cast iron, cast steel, bearing steel, high carbon steel, chrome-nickel alloy, bronze, brass, and ceramic tile, marble, jade, bone, etc. And its processing hardness would up to HRA 89-92.5.

Tungsten carbide drill is also known as tungsten carbide brill bit that has excellent characteristics such as high hardness, high wear resistance, high toughness, high strength, and long service life. The specially designed edge of the drill bit is sharp and durable to suppress chatter during processing and improve the quality of the processed surface. Also, it reduces cutting resistance and improves working efficiency to obtain good surface finish.

Tungsten carbide core drill has characteristics of high drilling efficiency, low cost and labor saving, and is mainly used for drilling of steel components in rail transportation, bridges, ships, machinery manufacturing, aerospace and other fields. Well, what are the installation precautions of tungsten carbide core drill bits?

Tungsten carbide hollow drill, which is called annular cutter when it is used in metal, is a drill specifically designed to remove a cylinder of material, much like a hole saw. Tungsten carbide hollow drill bits are used for many applications, either where the core needs to be preserved, or where drilling can be done more rapidly since much less material needs to be removed than with a standard bit.

Tungsten carbide core drill can be a cost effective means of drilling through softer unconsolidated formations. And such a core drill is applicable to hole cutting and process of annular groove on various magnetic drills and press. Tungsten carbide does not possess the hardness of diamond, while it is relatively cheap compared with diamond drill. It cuts effectively at low r.p.m. (revolution per minute) and low weight on bit.