суббота, 11 июля 2015 г.


Tungsten can be a steel-gray metal by using impurities is brittle and never very workable but also in pure form is very ductile and easy to use. Of all the metals in pure form, tungsten has the highest melting point, lowest thermal expansion coefficient, and highest tensile strength. Alloying tungsten with materials like steel can greatly increase its strength.

You will find three common kinds of tungsten-based alloys which are formed for a variety of applications.

Tungsten nickel iron alloys are the most typical alloys in the chemical toxins industry. They are favored where (in addition to the density) maximum ductility and strength are needed for the application.

Tungsten nickel copper alloys are particularly useful when magnetic permeability may be a problem. Although the development of copper brings about lower tensile strength and ductility, the absence of magnetic properties get them to a great choice for oncology systems, shielding electrical sensors in applications such as well logging, or rotating inertia members used near guidance systems.

Tungsten carbide is actually created from a chemical reaction between Radiation shielding metal powder and pure carbon powder. It behaves similarly to unalloyed tungsten and is immune to chemical attack, while it reacts strongly with chlorine to produce tungsten hexachloride. Simply because of its hardness, this is the main constituent in cemented carbide. As the most significant tungsten compound, tungsten carbide is commonly used to help make all sorts of wear-resistant cutting and abrasive machine tools and blades for different industries, and accounts for about 60% of current tungsten consumption.

Selecting metal alloys requires an analysis of the desired dimensions and specifications. Dimensions to consider include outer diameter (OD), inner diameter (ID), overall length, and overall thickness. Other specifications of importance (according to application) include product shape, tensile strength, yield strength, melting point, conductivity, corrosion resistance, ductility, and malleability. These properties differ depending on the forming method and alloy composition.

Комментариев нет:

Отправить комментарий