Breaking News

How to choose the right powder welding machine

by Tech Reporter
20 March 2019 | 1135 Views
The choice of the right powder welding machine can be simple and profitable if you carefully consider the application as well as the advantages of each welding process. It involves searching for a product that is efficient, powerful, easy to handle and, most importantly, suited to the particular needs.

In turn, there are many types of welding processes, from simple oxy-fuel to high-tech laser beam.

So, how do welders select the right one for them?
Examine some commonly used welding processes and which materials they are best suited for.

Types of Welding Machines
There are many different types of welding machines used today for different effects and needs. Every method uses varied tools, equipment, and techniques. There are four which are most commonly applied:

SMAW/Stick: Shielded Metal Arc Welding
Stick welding is a type of arc welding, in which a lightning-bolt-like electric current runs between the electrode, or "welding rod" and the substrate. The electrodes have a flux core, which is a chemical cleaner. It is typically used in construction, steel fabrication, pipeline work, and for repairing heavy equipment.

GMAW/MIG: Gas Metal Arc Welding/Metal Inert Gas
This type of welding also uses a consumable electrode. Instead of using flux to prevent oxidation and other metal-weakening agents, MIG welders use an inert gas, which also runs through the welding gun. This type of welding is easy to learn and can be used on a wide range of metals.

FCAW: Flux Cored Arc Welding
Flux-cored arc welding has all the speed of MIG welding, with the efficiency of stick welding. Like in MIG welding, you have a continuously fed wire running through the gun. However, this wire has a flux core, just like the electrodes used in stick welding. It excludes the necessity of addition of inert gas, needed for welding MIG.

GTAW/TIG: Gas Tungsten Arc Welding/Tungsten Inert Gas
This type does not use a consumable electrode. Instead, the welder uses an external rod to create the molten metal needed to forge the weld. TIG welding is known for its strong, high-quality welds, though it requires a higher level of skill than other types of welding.

Powder Welding Peculiarities

Powder welding is traditionally applied using an oxy-acetylene torch. The workpiece heats with the torch. The powder is introduced into the gas stream from the integral powder hopper and then transferred to the workpiece through a flame.

A dense coating of powder forms a strong bond to the base metal by alloying and diffusion.
This process is similar to the oxy-acetylene process with the exception that the hardfacing takes place at lower temperatures. It reduces to the minimum oxidation and deformation of the workpiece and supplies easy edges floating-up.

Powder welding provides an excellent method for puddling in small patches of material fairly quickly. For this reason, the torch is usually used for repair work, to build up the small gouges and cracks, and to apply the small amounts of material. There are some materials currently available exclusively in powder welding format.

Peculiarities of powder welding are:
  • Low Dilution
  • Easy Application
  • Low Distortion
  • Ideal for Edge Building

It should be noted that adding iron powders to covered electrodes, flux cored wires and metal cored wires are well established today.

Additions of iron powder to covered electrode coatings contribute improvement of welding characteristics. The results are often a smoother and more stable arc, lower spatter losses, improved re-striking as well as good bead appearance, and easy slag removal.

Also, additions of high-purity iron powders in welding electrodes have a positive effect on final weld quality.

Flux-cored wires are produced usually with a high percentage of iron powder in their fill, which allows for very high deposition rates in applications such as vertical up welding. Metal-cored wires have even higher deposition rates than flux-cored wires, and solid wires as the core mainly consist of metal powders. For these wires, choosing the right iron powder is even more critical for final product performance.

For both flux-cored and metal-cored wires, the manufacturing process is decisive in achieving the desired product quality. Consistent grain size distribution, powder density and flow characteristics during form and fill of the wires are all extremely important.

welding machine welding electrodes flux cored wires

Source: Fülldraht Schweißgerät


Latest News

Chamisa and Mnangagwa mourn Sri Lanka martyrs

by Mandla Ndlovu | 21 April 2019 | 526 Views

Multiple inconsistencies in Mr Multiverse Dungani's article. - I do no...

by Thulani Nkala | 21 April 2019 | 262 Views

'Biti and Welshman Ncube must not contest at congress'

by Staff reporter | 21 April 2019 | 1815 Views

Zanu-PF begins constitutional amendments - Zanu-PF has started the pro...

by Staff reporter | 21 April 2019 | 1362 Views

Rugare Gumbo snubs Mnangagwa & Zanu-PF

by Staff reporter | 21 April 2019 | 7167 Views

Chamisa clinches victory

by Staff reporter | 21 April 2019 | 5995 Views

White farmers told to pay ex-workers first - WHITE commercial farmers ...

by Staff reporter | 21 April 2019 | 1348 Views

'Foreign aid will not bail out Zimbabwe'

by Staff reporter | 21 April 2019 | 1540 Views

'Peasant farmers now driving Zimbabwe's economy' - THE agricultural se...

by Staff reporter | 21 April 2019 | 488 Views

192 Zimbabweans refused entry into South Africa - MORE than 107 000 pe...

by Staff reporter | 21 April 2019 | 2110 Views

Criminals cash in on lost IDs, certificates - CUNNING criminals are ea...

by Staff reporter | 21 April 2019 | 666 Views

Matebeleland Collective a ZANU PF and British creation?

by Mandla Ndlovu | 21 April 2019 | 848 Views

Dreaded CIO Minister in fresh mine wrangle storm

by Mandla Ndlovu | 21 April 2019 | 1545 Views

George Charamba gets baptism of fire

by Mandla Ndlovu | 21 April 2019 | 4341 Views

WATCH: Chiyangwa turns his 34 bedroom house into a hotel

by Mandla Ndlovu | 21 April 2019 | 3878 Views

President Mnangagwa's Easter message to Zimbabwe

by Mandla Ndlovu | 21 April 2019 | 1685 Views

'Mnangagwa and Enock Sithole were not crocodile gang members'

by Mandla Ndlovu | 21 April 2019 | 2932 Views

'Mnangagwa's advisor is a CIO double agent'

by Mandla Ndlovu | 21 April 2019 | 10278 Views

WATCH: Pastor kisses a woman to remove a demon - A video of a Pastor k...

by Mandla Ndlovu | 21 April 2019 | 4008 Views

Mujuru denies Mnangagwa's visit

by Mandla Ndlovu | 21 April 2019 | 6165 Views

Valerio Sibanda's war time exploits

by Dr Milton, Chemhuru | 21 April 2019 | 6212 Views

Mohadi seeking to turn the tables on ex-wife

by Staff reporter | 21 April 2019 | 1986 Views

Chinamasa 'brushes off' sanctions mantra

by Staff reporter | 21 April 2019 | 2099 Views

Opposition will not observe ballot paper printing: Mangwana

by Staff reporter | 21 April 2019 | 2495 Views

Mnangagwa must apologise for his role in gukurahundi genocide

by Staff reporter | 21 April 2019 | 684 Views

Hailstorm kills one, displaces families - A hailstorm ravaged parts of...

by Staff reporter | 21 April 2019 | 537 Views

Serial rapist arrested - Police have arrested a 36-year-old man in the...

by Staff reporter | 21 April 2019 | 613 Views

Brooklyn bus inferno survivor wants compensation

by Staff reporter | 21 April 2019 | 638 Views


Charambas drop videos

by Staff reporter | 17 April 2019 | 1162 Views

Jah Prayzah dares UK fans

by Staff reporter | 17 April 2019 | 3442 Views

Bekezela wants his music to appeal to Zimbabweans - South Africa-based...

by Staff reporter | 17 April 2019 | 187 Views

Olinda and Tytan welcome new born baby

by newzimbabwe | 11 April 2019 | 896 Views

Bev looks to conquer world

by Staff reporter | 07 April 2019 | 2570 Views

Mkhululi Bhebhe puts Zimbabwe on gospel map

by Staff reporter | 06 April 2019 | 1808 Views

Winky D to receive award as ZimAchievers pay Tuku tribute

by Staff reporter | 05 April 2019 | 3268 Views

What To Look For In Video Converter Software

looking for the best video converter software? you have to compare different video converters before making a purchase.the ability to watch video on different types of devices is a wonderful thing. not so wonderful are the compatibility issues that ... Read More
Sergey 19 June 2015 ago

Greatsoftline For All Of Your Software Needs

coupon and promo codes: greatsoftline for all of your software needswhile some online sellers have promotional services that reduce the overall amount you spent, others do not .you need to be on the lookout for the best outlets in order to chase th... Read More
ITnews 25 February 2015 ago