Do you know what the English letters and numbers in the model of tungsten carbide thread insert mean? Let's take 17NR8-3RD as an example to understand the type of a tungsten carbide thread insert.

High purity ammonium metatungstate is a water soluble crystalline powder with white or yellowish appearance. It is an important intermediate compound in the tungsten wet smelting process. Also, it is one of tungsten catalysts. The active component of ammonium metatungstate (AMT) catalyst is tungsten trioxide (WO3), which is used as a catalyst carrier. With the vigorous development of the petroleum processing industry, the research, development and application of high purity ammonium metatungstate have also been directly promoted.

Ammonium metatungstate (AMT) is one of the most important raw materials and precursors for preparing tungsten carbide catalyst. The physical and chemical properties of AMT affect the structure and performance of the prepared tungsten carbide (WC). The particle size and structure of the precursor will have a greater impact on the later reduction carbonization process, which in turn will affect the catalytic activity of the tungsten carbide catalyst, according to the researchers.

Ammonium metatungstate (AMT) can be used as an active component to prepare a high specific surface area porous honeycomb ceramic catalyst, so that the catalyst can better adapt to application conditions such as frequent temperature changes, high nitrogen oxide concentration, high thermal stability, and high surface area.

The researchers have proposed a preparation method of ammonium metatungstate. And the ammonium metatungstate (AMT) prepared by this method can be used as a catalyst for petroleum cracking.

Safety technical measures of tungsten hexachloride should be known to all users as the chemical nature of tungsten hexachloride is very lively, and it will react violently in the moist air, giving off a pungent gas hydrogen chloride and strong oxidizing substances.

Why use tungsten hexachloride hydrogen reduction to prepare ultrafine tungsten powder? At present, there are many kinds of preparation methods of ultra-fine tungsten powder at home and abroad, but the most eye-catching method is hydrogen reduction of tungsten hexachloride, according to the experts.

Tungsten hexachloride (WCl6) is known as a dark purple or dark blue fine-grained powder. Well, how about the stability of tungsten hexachloride?

Tungsten hexachloride can be applied for preparing tungsten oxide mesoporous material. It has been reported that some researchers use tungsten hexachloride (WCl6) as the source of tungsten and long-chain organics as the template, after gelation in ethanol, the organic template is removed by calcination or solvent extraction agent to prepare tungsten oxide mesoporous material - a functional material with wide application in the fields of catalysis, electrochromism, electrode materials, energy storage and microwave materials.

The researchers used tungsten hexachloride (WCl6) and tributyl phosphate to synthesize a new near infrared absorbent. The obtained near-infrared absorber has the advantages of high visible light transmittance, strong near-infrared absorption, and good stability to light and heat. And the researchers also used the near-infrared absorber as a colorant and methyl methionate as a matrix to prepare a new near-infrared filter plastic product with stable near-infrared absorption performance.