Silver Tungsten Electrode
Introduction
Silver and tungsten of silver tungsten electrode alloy means silver tungsten pseudo alloy, it is a kind of binary alloy. Due to a high melting point of tungsten, it cannot interact with silver, so that this type of tungsten electrode can only prepared by powder metallurgy method or a pressing method. With the advent of more and more new tungsten electrode, the entire industry is increasingly on track.
Trademark
Because different silver tungsten alloys have different properties, the specification of silver tungsten electrode is also divided into several different properties.
| Code | Ag | W% | Impurity | Density g/cm3 | Conductivity %IACS |
Hardness （HRB） |
Flexural Strength kn/mm2 |
| AgW30 | 70±1.5 | Margin | <0.5 | 11.75 | 75 | ≥75 | |
| AgW40 | 60±1.5 | Margin | <0.5 | 12.4 | 66 | ≥85 | |
| AgW50 | 50±2.0 | Margin | <0.5 | 13.15 | 57 | ≥105 | |
| AgW55 | 45±2.0 | Margin | <0.5 | 13.55 | 54 | ≥115 | |
| AgW60 | 40±2.0 | Margin | <0.5 | 14.51 | 51 | ≥125 | |
| AgW65 | 35±2.0 | Margin | <0.5 | 14.5 | 48 | ≥135 | 657 |
| AgW70 | 30±2.0 | Margin | <0.5 | 14.9 | 45 | ≥150 | 657 |
| AgW75 | 25±2.0 | Margin | <0.5 | 15.4 | 41 | ≥165 | 686 |
| AgW80 | 20±2.0 | Margin | <0.5 | 16.1 | 37 | ≥180 | 726 |
Charateristics
Silver tungsten electrode has excellent welding and corrosion-resistant properties, and it is widely used for industrial and domestic circuit breaker field. If the conductive of Argentum is stronger, then the electrode will has a better weldability. In addition, this type of the electrode also has a strong hardness and resistance welding. It is characteried by a good response in arc erosion resistance and welding resistance and conductive.
Application
Generally, silver tungsten electrode is mainly used in AC welding of aluminum and magnesium alloys. Thanks to its excellent welding resistance and other properties, it is also widely used in EDM electrodes, high temperature materials, and microelectronic material. It can also be processed to components in many industries, such as aerospace, aviation, electronics, electric power, metallurgy, machinery, sports equipment and so on. Because silver tungsten electrode has very good welding and corrosion resistance, it is widely applied in field of industrial and domestic circuit breaker. On the other hand, a small amount cobalt of silver tungsten can reduce the ability of the contact resistance to a certain extent.
Manufacturing Process
Because the great differences of physical properties between tungsten and metallic silver, whether it is solid or liquid, both od them can not melt each other, it cannot be produced by ordinary casting method. Nowadays, silver tungsten electrode is formed by the powder metallurgy process. There are also many manufacturers to choose the extrusion method. The general process is: mixing the ingredients-compression molding-sintering retentate solution-cold-working.
Content
Silver tungsten electrode is mainly composed of silver tungsten alloy. With the increase of tungsten, hardness and welding capability will be reduced. Silver tungsten alloy is a binary alloy of silver and tungsten, both are not soluble in each other in any state.