Are the pins and welding bushes scratched on the conveyor chains?
Industrial conveyor systems often have to operate in
demanding and demanding conditions. If the performance of the conveyor chain is
important, it is better to use pins and welding bushes to increase the strength
and improve the wear characteristics of the chain. If done correctly, welded
pins and bushings can increase the resistance of the conveyor chain by more
than 30%.
However, if welding is not carried out with a sufficient
standard, or if the material is not suitable for the process, or if welding is
added later, you may find a low quality conveyor chain. It is easy to decompose
and greatly shortens the life.
If the manufacturer of the industrial chain suggested that
it could provide a version of its own welded conveyor chain, some
things must first be clarified.
1. Is there an automatic welding procedure?
For demanding conveyor applications, the quality and
functionality of welding are important.
The use of an automatic welder means that the control of the
welding process, the welding temperature and the use of energy are strictly
controlled.
With the automatic welding system, each size and type of
conveyor chain has its own preloaded welding parameters, which minimizes the
risk of human error and provides consistent and repeatable optimum welding
quality.
Highly developed automatic welding technology keeps heat
affected areas to a minimum, ensuring a product with a long service life over
time.
2. Are the pins and bushes
hardened by induction?
The material selection and the type of production process
used must be specifically designed for the welding of pins and bushings.
For example, it improves the weld ability of the conveyor
chains, the pins of the conveyor chain and the hubs of the conveyor chain, so
care must be taken to protect the ends of the pins and bushings from hardening.
For example, if the manufacturer reinforces the pin, it will
harden to the end, which will affect weld ability.
Induction hardening, on the other hand, facilitates welding
because each end of the pin and the bushing are protected throughout the heat
treatment.
3. Are chains welded before or after production?
Another important consideration is the occurrence of pin and
bushing welding in the production stage.
As you can see in this example, the manufacturer added the
welding process as an additional step after the chain was produced.
Crucially, there is a much greater risk of pinching the pin
when the circumference of the pin is welded, leaving the chain and driving the
chain.
Another problem facing this manufacturer is that the
material is not designed to weld the chains for the first time. As a result,
the depth of the weld can be very superficial, which leads to the use of lower
quality chains, which greatly shortens the life of the customer.
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