About grade aluminum alloy with aluminum-based general. Main alloying elements are copper, silicon, magnesium, zinc, manganese, minor alloying elements nickel, iron, titanium, chromium, lithium, etc. Aluminum density is low, but the intensity is relatively high, close to or more than high quality steel, plastic, can be processed into a variety of profiles, with excellent electrical conductivity, thermal conductivity and corrosion resistance, widely used in industry, second only to the use of steel . Aluminum alloy two broad categories: cast aluminum alloy, used in the cast; deformation of aluminum alloy, can withstand pressure processing, mechanical properties than cast. Can be processed into various forms, specifications aluminum material. Mainly for the manufacture of aviation equipment, daily necessities, building doors and windows. Aluminum alloy by deformation processing methods can be divided into aluminum and aluminum alloy. Deformation is divided into non-heat-treated aluminum alloy and heat treatment Reinforced Reinforced Aluminum Alloy. Type can not be heat strengthened by heat treatment to improve mechanical properties, can only be achieved through the cold deformation strengthening, which includes high purity aluminum, industrial high-purity aluminum, industrial aluminum and rust-proof aluminum. Heat-treated aluminum alloy can be enhanced by means of quenching and aging heat treatment to improve mechanical properties, it can be divided into hard aluminum, wrought aluminum, super-hard aluminum and special alloy and so on. 
 Aluminum heat treatment can be used to obtain good mechanical properties, physical properties and corrosion resistance. 
 Cast aluminum alloy can be classified according to chemical composition of Al-Si alloy, aluminum-copper alloy, aluminum-magnesium alloy and aluminum-zinc alloy. [] Aluminum products aluminum smelting products and pressure processed sub-categories, the chemical composition Al, said the former, the latter with the Hanyu Pinyin LG (aluminum, industrial use), said. Aluminum] [aluminum pressure pressure processing into processed products, rust (LF), hard (LY), forging (LD), super-hard (LC), coated (LB), special (LT) and brazing ( LQ) in seven categories. Aluminum alloy commonly used in the state of annealing (M Annealing), hardened (Y), hot-rolled (R), three. [Aluminum] and aluminum alloy processed into a certain shape of the material referred to aluminum, including sheet, strip, foil, pipe, bar, wire, profiles and so on. Cast Aluminum Cast Aluminum] [(ZL) by elements outside the main elements of aluminum silicon, copper, magnesium, zinc is divided into four categories, code coding were 100,200,300,400. [] High-strength aluminum alloy high-strength aluminum alloy means a tensile strength greater than 480 MPa of the alloy, mainly in the hard alloy aluminum pressure processing class, super-hard alloy type and casting alloy. [Bugfix] aluminum alloy in the production process, prone to shrinkage, trachoma, such as casting porosity and slag defects. How to repair aluminum alloy casting porosity and other defects it? If welding, argon welding equipment to repair, due to heat large, prone to heat distortion and other side effects, can not meet the welding requirements. Cold welding repair machine is the use of instant high-frequency spark discharge, no principle to fix the casting heat welding defects. As the cold welding heat affected zone is small, does not cause deformation of the substrate annealing, no cracks, no hard spots, hardening. And welding, high strength, fill material and the substrate simultaneously melted and then solidified, combined with a solid, can be grinding, milling, filing and other processing, compact non-shedding. Cold welding machine is the repair aluminum repair holes, sand holes and other small defects in the ideal method.