Coarse crystalized ammonium paratungstate (APT) is a flaky or needle-like white crystal that is slightly soluble in water and insoluble in alcohol. As a raw material for the powder metallurgy industry, coarse crystalized APT has the characteristics of simple production process, high purity, high bulk density, good fluidity, and easy storage and transportation.

Ultrafine ammonium paratungstate is an important raw material for the production of nano tungsten powder. Since the 1990s, nano tungsten powder has been generally concerned by researchers all over the world, and ultrafine APT, as an important raw material for preparation of W powder, is also receiving much attention.

What is ammonium paratungstate? Ammonium paratungstate, APT for short, is white, finely divided crystals, with the chemical formula (NH4)10(W12O41) · 5H2O. It is soluble in water and insoluble in alcohol. It is produced by evaporation of purified ammonium tungstate solution to obtain pure paratungstate crystals. Controls of time, temperature, concentration, and pH, determine the quality and physical characteristics of the APT crystals.

Tungsten carbide cutter blade is three times stiffer than the steel commonly used on other types of wood-cutting tools. Tungsten carbide enables blades to cut faster without binding, which reduces load on woodworking machines. Sharp, carbide-tipped tools are far more efficient, cutting faster and needing sharpening less often than common steel blades.

Production process of tungsten carbide blade is the focus of researchers as it greatly affects the quality of blades. Production processes of tungsten carbide blades include powder production, powder compacting, high temperature sintering, blade grinding and other processes.

Tungsten carbide thread-cutting tool, or tungsten carbide thread cutting blade, is manufactured from high quality material with high hardness of and durability, and is often mounted on a lathe tool (turning tool). There are tungsten carbide external thread cutting tool and tungsten carbide internal thread cutting tool. With good machining performance, they can guarantee the machining accuracy and thread quality.

Tungsten carbide non-standard blade has been widely used in cutting paper, carton, rubber, plastic, aluminum foil, packaging materials, film, chemical fiber, textile, etc. They have different shapes and different uses.

Tungsten carbide three-hole blade is made of ultrafine cemented carbide particles that has good metallographic structure, high processing accuracy, and no tipping during normal use. Also, it has the characteristics of high precision, sharpness, low cutting resistance, excellent cutting effect, and excellent wear resistance and durability, so that it can reduce the number of blade replacements, thereby improving production efficiency. Tungsten carbide three-hole blade is mainly used for cutting tape, film, paper, aluminum foil, non-woven fabrics and other products.

Tungsten carbide cutting blade is manufactured by selecting high-quality raw material, adopting excellent technology, and processing by high-precision equipment. It is ideal for cutting fiberglass sheets, non-ferrous metal, miniature moldings, plastics, and other difficult-to-cut materials. Such cutting blades vary in shape, depending on their applications.

Tungsten carbide circular blade has characteristics of super precision, better physical appearance, good cutting performance, clean and neat cut, no burr, wear resistance and long working life. It is mainly applied in metalworking, steel mills, plastic processing and other industries.