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Spot Welding

What Is The Process?

  1. Two separate metals are clamped together and held between the two electrodes. The electrodes touch both pieces of metal and an electrical current with high amps is passed through the electrodes. This seams both of the pieces of metals together with a weld.
  2. There are different types of welding, spot manual and automatic and seem welding, each requires a different level of cooling.

spot welding

Why Is Cooling Required?

  1. The electrodes need cooling via the water lines to insure they do not over heat. If they overheat the weld loses its quality and the probes stick to the work piece.

How To Calculate The Cooling

  • Use 5% of the KVA input for manual spot welder
  • Use 7.5% of the KVA input for automatic spot welder
  • Use 10% of the KVA input for the seam welder

What Must The Cooling System Include

Manual By-Pass on chiller circuit; it is likely the water flow could change during operation so it is important the chiller always has its required minimum flow.

Glycol is not advisable as the welding tips sometimes come out and the cooling fluid goes on to the floor.

It is always advisable to use a non-ferrous circuit as water make up will cause corrosion of mild steel.

Call Aqua's Experienced Engineers

Aqua's team of experienced engineers are on hand to take your call on 0333 004 4433, should you require spot welding unit cooling. Before speaking to us, please try and answer the following questions as thoroughly as possible as the more information you can provide, the easier it will be for us to help:

  • What is the temperature of the chilled water required?
  • What water pressure do you require at the tools?
  • What is your welder type?
  • What is your welder KVA input?
  • What is the water treatment on process?
  • What is the automatic fill on process?

Call Aqua's experienced engineers on 0333 004 4433 today! Aqua's team look forward to speaking to you soon and helping you with your spot welding cooling requirements!

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