Ferroalloy

A master alloy composed of iron and one or more elements, mainly used in steel smelting. In the iron and steel industry, all intermediate alloys used in steelmaking, whether containing iron or not (such as silicon calcium alloy), are called "ferroalloys". It is customary to include some pure metal additives and oxide additives.

Ferroalloys are commonly used as deoxidizer. In the process of steelmaking, oxygen is removed from molten steel, and other impurities such as sulfur and nitrogen can be removed from some ferroalloys.

(2) alloy additive. According to the requirements of steel composition, alloy elements are added into the steel to improve the properties of steel. ③ Inoculant. The crystal structure of cast iron can be improved by adding molten iron before casting. In addition, it is also used as reducing agent for producing other ferroalloys and non-ferrous metals by metal thermal reduction method, alloy additive for nonferrous alloy, and a small amount of it is used in chemical industry and other industries.

Aluminum alloy

The general term for aluminum based alloys, the main alloy elements are

Copper, silicon, magnesium, zinc, manganese, secondary alloy elements are nickel, iron, titanium, chromium, lithium, etc. Aluminum alloy has low density, high specific strength, close to or better than excellent steel, good plasticity, can be processed into various profiles, with excellent conductivity, thermal conductivity and corrosion resistance. It is widely used in industry, and its usage is only inferior to steel.

Aluminum alloys are divided into two categories: cast aluminum alloy, which is used in as cast state; wrought aluminum alloy, which can withstand pressure processing and has higher mechanical properties than as cast aluminum alloy. It can be processed into various shapes and specifications of aluminum alloy. It is mainly used for manufacturing aviation equipment, daily necessities, building doors and windows, etc.

According to the processing method, aluminum alloy can be divided into wrought aluminum alloy and cast aluminum alloy. Wrought aluminum alloy can be divided into non heat treatment strengthening type and heat treatment strengthening type. The non heat treatment strengthening type can not improve the mechanical properties by heat treatment, but can only be strengthened by cold working deformation. It mainly includes high-purity aluminum, industrial high-purity aluminum, industrial pure aluminum and antirust aluminum.

The mechanical properties of heat-treated and strengthened aluminum alloys can be improved by quenching and aging. It can be divided into hard aluminum, forged aluminum, super hard aluminum and special aluminum alloys. Aluminum alloy can be heat treated to obtain good mechanical properties, physical properties and corrosion resistance. According to chemical composition, cast aluminum alloy can be divided into Al Si alloy, Al Cu alloy, Al Mg alloy and Al Zn alloy.

Source: Guangzhou outdoor furniture manufacturer http://www.gzpeimei.com