Incoloy welding of nickel alloys
Are you interested in welding nickel alloys with an insolite from the supplier company AvecGlob? Here you will find interesting information on this topic.
Welding electrodes of Incoloy alloy — properties
Nickel alloy Incoloy is widely used for the production of welding wire, which is used in the processes of gas and electric welding of nickel alloys, pure nickel. And also with the combined connection of nickel alloys with stainless and ordinary steels. The wire from the alloy in question is more often used in automated welding technologies, because it should be smoothly fed through welding equipment: in this case, the wear of the welding tip is reduced.
Composition (numeric data — in percent) and properties of the welding wire from the Incoloy alloy
| Nickel | 72.9 |
| Chromium | Until 20.4 |
| Tin + tantalum | Up to 2.5 |
| Iron | Until 1.1 |
| Manganese | Not more than 2.85 |
| Other | Not more than 1.50 |
| Carbon | Not more than 0.03 |
| Sulfur | Not more than 0.001 |
| Phosphorus | Not more than 0.003 |
| Silicon | Not more than 0.22 |
Mechanical properties: ultimate strength — 590 MPa, elongation — 38%.
Supplier — AvecGlob Company — offers at a reasonable price from the manufacturer a wide range of welded structures of nickel-base alloys welded with the Incoloy alloy. The supplier guarantees the timely delivery of products to any address specified by the consumer.
Features of welding Incolyu
Most welding methods are determined by the two main properties of nickel alloys — their low thermal conductivity, and the slow formation of a bath with a liquid metal. Low thermal conductivity means that heat does not dissipate easily. Another way to say that heat is very easy to grow. Therefore, when welding with Incoloy, it is necessary to use cooling pads, which are located on the opposite side of the welding electrode.
The slow formation of the melt is eliminated by using argon under increased pressure, which covers the weld zone and protects the welded materials from high-temperature oxidation by air oxygen, which is especially necessary when welding nickel alloys with ordinary steels. This keeps the temperature of the welding electrode in the right range, and allows the use of comparatively small welding currents when welding with Incoloy. As a result, the deformations of the welded parts in the zone of the finished weld are also reduced.
Recommended modes of welding of nickel alloys using a welding wire from Incoloy:
Using a tungsten non-consumable electrode: current 150… 250 A (with increasing electrode diameter, the current is increased), the arc voltage is 26… 33 V, shielding gas is argon with 25% helium added;
When welding under a layer of flux — current 270… 550 A, voltage — 28… 33 V, the composition of the flux must comply with the recommendations for welding a nickel alloy of a particular brand. Both agglomerated and fluxed fluxes can be used. The chemical composition of the flux mainly affects the chemistry of the weld metal and, consequently, its corrosion resistance and mechanical properties.
Supplier — AvekGlob company — offers to purchase various welded constructions from nickel alloys, which are welded with the help of Alloy type Incoloy. Products can be bought at a price formed on the basis of European and world standards of production. Implementation is possible in bulk and retail, for regular customers, a flexible system of discounts operates.