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Straightened tungsten wire has the characteristics of high temperature performance, good machining performance, high recrystallization temperature, and good resistance to high temperature sag performance so that it can be directly cut for manufacturing tungsten needle or electrode. Straightened tungsten wire includes straightened black tungsten wire, straightened cleaned tungsten wire, straightened tungsten rhenium wire, and the like. This type of tungsten wire can be obtained through drawing process and straightening process. Drawing process is to heat the metal tungsten to plasticity,…

Stranded tungsten wire is bright silver gray and uniform in color. And there is no visible contaminant, obvious burrs, cracks, and oxidation phenomenon on the surface. The monofilament has no breakage, and the spiral coil is slightly elastic. Besides, it can be used to evaporate pure aluminum wire with a life of more than 12 heats. Stranded Tungsten Wire Application It can be used as a resistance heater for mirror making, aluminum film evaporation, and electric vacuum, electronic device or…

Tungsten rhenium wire has the characteristics of good tensile strength, elongation, anti-seismic performance and non-sag performance so that it can be used to produce filaments for lighting. Performance Comparison of Tungsten Rhenium Wire and Tungsten Aluminum Wire The performance of tungsten rhenium wire is better than that of tungsten aluminum wire, which can be seen from the following points: 1. The density of tungsten rhenium wire is 19.65g/cm3, and tungsten aluminum wire is 19.3g/cm3. 2. The elongation of tungsten rhenium…

Cleaned tungsten wire ?is referred as to the tungsten wire that has been electrolytically cleaned and polished with smooth and clean surface. Cleaned tungsten wire can be used in an atomizer. Tungsten atomizer has the advantages of small size and low energy consumption. Also, it is suitable for on-site and real time analysis. Therefore, it will play an important role in the field of atomic spectral analysis. It is the demand of the conservation-oriented and environmentally friendly modern society to…

Black tungsten wire means the tungsten wire that has not been processed by cleaning. And it was found that the “black” on the surface was formed by the adhesion of graphite and tungsten oxide. Graphite acts as a lubricant for the drawing process. Tungsten oxide on the surface is generated using natural gas or electricity to heat the tungsten wire. The cleaned black tungsten wire, i.e., tungsten wire, has the characteristics of good electrical and thermal conductivity, high melting point…

Tungsten wire has the advantages of high melting point (3422°C) and fast heating rate. It can be used as an atomizer in electrothermal atomic absorption spectrometer, combining with the advantages of small-sized charge-coupled device (CCD) as a detector; thereby making the spectrometer has the advantages of low energy consumption and miniaturization. At present, the portable tungsten coil electrothermal atomic absorption spectrometer (W-coil ETAAS) has been applied in many fields such as simultaneous determination of multiple elements, chemical modifiers, electrothermal evaporation…