Yellow tungsten oxide is a common name of tungsten trioxide (WO3) from its appearance – yellow powdery crystals, which has excellent characteristics such as electrochromism, photochromism, and gasochromism. Well, do you know what are applications of yellow tungsten oxide?

Yellow tungsten oxide, which is also referred to as tungsten trioxide or WO3, has excellent electrochromic property. It is excellent electrochromic property that makes yellow tungsten oxide become a typical cathode electrochromic material. And the amorphous WO3 film is considered to be one of the most promising electrochromic materials. And therefore, WO3 is often seen in researches on electrochromic devices such as smart windows.

Tungsten carbide shield cutter is an important part of shield tunneling machine, and supercoarse tungsten carbide is an important raw material for manufacturing the shield cutter. According to the experts, with the development of domestic shield technology, shield tunneling machines are more and more widely used in subway, municipal and underground pipe network construction projects. As the key raw material of shield cutter, the performance of tungsten carbide determines the life of shield cutter, and also determines the digging efficiency and economic benefit of the entire project.

Tungsten carbide spiral flute tap is a kind of tapping tool, and it is also well-known as the most mainstream tool for processing internal thread. The processing speed of spiral flute taps made using high quality tungsten carbide powder as raw material is several times faster than that of high-speed steel spiral flute taps. It means that using the tungsten carbide spiral flute tap, the processing efficiency is high and the cost is relatively low.

Tungsten carbide straight flute tap is a type of tungsten carbide tap, which is more wear-resistant with higher hardness, better tapping performance and longer service life than straight flute taps made of steel materials. Therefore, it is often used for processing aluminum parts, stainless steel parts and other steel parts, etc. Such straight flute taps made of high-quality tungsten carbide powder are suitable for applying to drilling machines, tapping machines, automatic lathes and milling machines.

Tungsten carbide screw tap is the most mainstream tool for processing internal threads (tapping) as it has characteristics of high hardness, high strength, precise thread, sharp and wear-resistant cutting edges, fast processing speed, high precision, good chip removal effect and durability. And therefore, it has wide range of applications in tapping stainless steel, die steel, cast iron, alloy steel and carbon steel, etc.

A cutter applied for a tunnel boring machine (TBM) is mainly tungsten carbide cutter as tungsten carbide has unique properties, such as good wear resistance, high hardness, high compressive strength, high elastic modulus, strong impact resistance, high corrosion resistance, and dimensional stability. Tungsten carbide cutters applied for a TBM have different types including tungsten carbide hobs, tungsten carbide scrapers, tungsten carbide tooth cutters, and so on.

Tungsten carbide tile cutter, which is also called cemented carbide tile cutter, is mainly used to score or cut tiles of different hardness and thickness. The scoring and cutting effects are good, the speed is fast, and the service life is longer.

How to improve tungsten carbide shield cutter properties? Tungsten carbide has unique properties such as wear resistance, corrosion resistance, high hardness, and impact resistance, so it is often used to manufacture heads of cutters such as disc cutter, serrated knife or scraper for applying to a tunnel boring machine. While these cutters will inevitably break and wear. To improve service life of tungsten carbide cutters, some researchers have proposed a method to improve performance of tungsten carbide shield cutter.

Tungsten carbide shield cutter is a type of tungsten carbide cutter applied for tunnel boring machines. Such a cutter is made of carbide materials (WC, TiC) of high hardness and high melting point, together with cobalt (Co), nickel (Ni) or molybdenum (Mo) as binding phase. Generally, the heads of these cutters is made of coarse-grained WC-Co cemented carbide.