This article talks about laser welding machines, its different types and reasons for having laser welding machines for a beginner. Read more...

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Getting Started with Laser Welding
Laser welding is a process to join together metals or
thermoplastics using a laser beam to form a weld. It needs the
high-intensity laser beam to form metals or thermoplastics. The
laser weld formation takes place with intense laser light and
heats the material​ ​rapidly.
It allows small size perfect welding with the help of ​amada
parts and bystronic parts in small areas and is the new
emerging technology with precision, high speed, flexibility, and
less distortion.
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Now, let’s understand the way laser welding operates:
Laser welding is the continuous process of pulsed laser beams.
We can divide the laser welding principle in heat conduction
welding and deep penetration laser welding. It combines with
conventional welding processes and is useful in soldering.
When the power density is less than 10~105 W/cm 2, it is called
a heat conduction welding. During this time the welding depth
is shallow. You can easily join the thin parts like amada parts
and ​bystronic parts and visible edges. The depth is normally
below 2.5mm and maximum its ratio is 3:1.
When the power density is more than 105~107 W/cm2, the
metal surfaces recess into a hole while heating, forming deep
penetration welding. Deep penetration welding features
provide fast welding speed and large depth to width ratio
(D/W).
Usually, the D/W ratio of welding can be up to 12:1 and can go
up to 51mm.
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Going further, here are its types:
1) Heat conduction laser welding:
In heat conduction laser welding, the laser beam melts the
mating parts along with common points. The molten materials
flow and solidify to form the weld.
While following this method, the laser energy shifts to the
workpieces solely via heat conduction. Heat conductivity of the
workpiece limits maximum weld depth. Hence, the width of the
weld is greater than its depth.
Usually, it is useful for applications which require an aesthetic
welding or when particulates concerns such as certain battery
sealing applications.
2) Deep Laser Penetration:
When the power density is big, the heat is not able to disperse
it quickly. The workpiece is beyond melting and it just
vaporizes.
The vaporizing material expands and creates a keyhole from
the surface to the depth of the weld. The laser beam moves
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across the surface of the workpiece, this in turn helps the
keyhole follow and create the deep and narrow weld.
3) Hybrid Laser Arc Welding:
Laser welding is useful in conjunction along arc welding to
create a Hybrid Laser Arc Welding.
In hybrid laser arc welding, we can use any one of the arc
welding processes like MIG, TIG, or SAW with deep penetration
laser welding.
This results in having deep penetration joints and also improves
tolerance. Other undesirable effects like cracking and internal
porosity also reduces.
4) Weld Joint Configurations
Welding joints are the configuration of two pieces of metal or
more which we weld together. This configuration is an
important factor to determine whether a joint will withstand
the load on it or not.
There are 5 basic joints which follow the American Welding
Society (AWS) and many other standards.
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Additionally, there are different types of welding joints like butt
welding, tee welding, lap welding, corner welding, and edge
welding and they require parts like amada parts, bystronic
parts and many others which are very famous.
The types of welding lasers:
There are numerous types of laser welding machines and each
of them has unique advantages and features that are perfect
for specific applications.
1) Fiber laser:
Fiber lasers are useful for applications like welding small parts
together which are useful in engineering, medical, or electronic
industries. Also welding thick materials in the automotive and
aerospace industries. Fiber lasers are very versatile and a
low-cost way of achieving high-quality spot welds.
2) Nd: YAG Laser:
Nd: YAG Pulsed Laser creates different pulses of controllable
energy which we can shape to create perfect weld. This type of
laser is suitable for producing large spot welds, as well as deep.
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This type of Laser is suitable for producing large spot welds, as
well as deep spot and seam welds.
3) Diode laser:
Diode lasers are perfect for high-speed welding and deep
penetration welding. They produce high welds at very low heat
input.
Why laser welders are perfect for beginners:
1. The laser welder does not need design software. They are
easy to operate and one can learn to handle them easily
within a few hours. While working with them you only
have to focus on the area on which you want to weld and
press the button and start welding.
2. The handheld laser welder replaces the previously fixed
light path with a handheld type, this makes laser welding
possible not only in the long-distance outdoor operation
but also for small and hard to reach points.
3. It adopts a high power laser source and creates a firm and
high-quality well in a short time.
4. The machine is compact and does not need installation,
you just need to plug and play!
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Final words:
Having laser welding is the first step for setting up your
business. Working with laser welding machines can be easy and
comfortable if you know which one is suitable for your use.
This Article Post is Originally Posted here:
https://penzu.com/public/58b72d57
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