Wholesale Extruding Magnesium Welding Wire AZ61 Magnesium Alloy Strip
Introduction:
Magnesium is the lightest of common metals. The melting point of magnesium is 650 ° C, which is similar to aluminum; the density of magnesium is 117g/cm; the chemical properties of magnesium are active.
To prevent spontaneous combustion in the air. Magnesium alloy has the following performance characteristics:
(1) Little density, 2/9 of the steel, 2/3 of the aluminum alloy, is the lightest structural alloy;
(2) The strength is larger, slightly lower than the fiber enhanced material of the largest strength, and is much higher than the engineering plastics;
(3) Good damping, strong absorption capacity, strong shock absorption, can be used for vibration of violent occasions;
(4) Good thermal conductivity, large expansion coefficient, elastic modulus
Low, it is 300 times the general engineering material, and the temperature dependence is low;
(5) Magnesium alloys are non -magnetic shielding materials, good electromagnetic shielding performance, strong anti -electromagnetic wave interference ability;
(6) Magnesium alloy processing is good, the line contraction rate is small, the size is stable, and it is not easy to change due to environmental changes.
Technology parameter:
| Grade | Specification of current products |
| AZ31S | Φ1.2mm,Φ1.6mm,Φ2.0mm,Φ4mm |
| AZ61S | Φ1.2mm,Φ1.6mm,Φ2.0mm,Φ4mm |
| AZ91D | Φ1.2mm,Φ1.6mm,Φ2.0mm,Φ4mm |
| AZ92A | Φ1.2mm,Φ1.6mm,Φ2.0mm,Φ4mm |
Alloy grade and chemical composion:
| AZ31S | GB/T 5153 |
| Elements | Al | Zn | Mn | Si | Fe | Cu | Ni | Others,total |
| Min % | 2.40 | 0.50 | 0.15 | | | | | |
| Max % | 3.60 | 1.50 | 0.4 | 0.10 | 0.005 | 0.05 | 0.005 | 0.3 |
| AZ61S | GB/T 5153 |
| Elements | Al | Zn | Mn | Si | Fe | Cu | Ni | Others,total |
| Min % | 5.50 | 0.50 | 0.15 | | | | | |
| Max % | 6.50 | 1.50 | 0.4 | 0.10 | 0.005 | 0.05 | 0.005 | 0.3 |
| AZ91D | GB/T 5153 |
| Elements | Al | Zn | Mn | Si | Fe | Cu | Ni | Be | Others,total |
| Min % | 8.5 | 0.45 | 0.17 | | | | | 0.0005 | |
| Max % | 9.5 | 0.90 | 0.4 | 0.08 | 0.004 | 0.025 | 0.001 | 0.003 | 0.3 |
| AZ92A | AWS A5.19-1992 |
| Elements | Al | Zn | Mn | Si | Fe | Cu | Ni | Be | Others,total |
| Min % | 8.3 | 1.7 | 0.15 | | | | | 0.0002 | |
| Max % | 9.7 | 2.3 | 0.5 | 0.05 | 0.005 | 0.05 | 0.005 | 0.0008 | 0.3 |
Use
Magnesium alloys and casting magnesium alloys are widely used in the welding of optical instruments, automotive accessories and civilian magnesium products and crafts. It is a special magnesium compound welding wire for welding and repairing magnesium alloy fracture, cracks, and needle -eye air pores.
Magnesium alloy has a good earthquake resistance and can withstand a greater impact load than aluminum, so there are many forging and casting products abroad.
Features:
The welding of magnesium alloys has the following characteristics:
(1) The boiling point of the magnesium alloy is low (1100 ° C). Under the high temperature of the melting welding, it is easy to evaporate, and explosion to form splashes;
(2) Magnesium alloy melting points are low, high thermal conductivity, high -power welding thermal source should be used during welding, so the weld and near seam areas are prone to overheating, grain grown, crystalline bias and other phenomena, which affects joint performance;
(3) The chemical properties of magnesium are lively. It is easy to generate MGO and MGN with oxygen and nitrogen reactions in the air. It is easy to form a small piece of solid -like slag in the weld. Decrease, so it needs to be protected by inert gas or welding when welding;
(4) The wire expansion coefficient of magnesium alloy is large, and it is easy to deform during welding, producing large thermal stress, and easy to produce heat cracks;
(5) Under welded heating conditions, a large amount of hydrogen can be dissolved in high temperatures, and the dissolving degree decreases sharply with the temperature.
