Weld Stud Clinic

How to use a bending bar?


What we have here is a few different nozzles. This isn't the total range of nozzles you can have from 2.5 up to whatever you test testing so you can have these on. You can even have these on shear studs, et cetera. Visual tests complete. You can now submit your weld it studs to a physical test, and one of these physical tests is carried out by abandoned by like this. So here we have a standard bending bar, which you can purchase for myself. There we go...

  • Capacitor Discharge (CD)
  • Short Cycle (SC)
  • Drawn Arc (DA)
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How to use an offset chuck


Today, we’ll be demonstrating a type of disruptive test. So this is a Bending bar and what we have here is a few different nozzles. Why do we use a bending bar? Bending bar is used after you’ve done your visual checks and you own your test piece.

  • Not-Interchangeable
  • Complimentary Processes
  • Application Dependant
  • Design Advantages and Disadvantages
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There's six key areas studwelding replaces inserts. Inserts can work loose and studwelding makes your weld leakproof, and the weld formed is stronger than the parent material. Drilling and tapping is another area, so generally drilling and tapping is slow and withstood welding. It eliminates the need of penetration back welding again, a slow, messy and inaccurate process.

  • Capacitor Discharge (CD)
  • Short Cycle (SC)
  • Drawn Arc (DA)
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What is included in CDM8 Machine?


The CDM8 will weld up to and including 8 millimeter threaded CD weld studs. We've got such a wide customer base from many different industries, so we've got, you know, anyone that's working with sheet metal, anyone we're working with and close enclosures, metal enclosures that need earthing. We have got a quick example here of a PCB, so you can see that underneath the plastic spaces. We have got more steel studs welded in here, and that's how this PCB has been attached to this inside this metal enclosure. We've got a CD welded Earth tag here showing the Earth is in and out that's been CD welded so that you can do that with the CDM8 as shown here.

  • Not-Interchangeable
  • Complimentary Processes
  • Application Dependant
  • Design Advantages and Disadvantages
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Collets, arbours and chucks


Today, we're just going to be talking about capacitor discharged chucks and the different types and different names that people have for them. At Studfast Studwelding, we are a leading UK supplier of capacitor discharge chucks. You may hear several different terms to describe just the same CD chucks. These include collects is a common one, so it's chucks you'll hear mostly. Chucks are the most common used terms.

  • Capacitor Discharge (CD)
  • Short Cycle (SC)
  • Drawn Arc (DA)
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Studwelder hire rental


Take Advantage of our offer on HIRE This Month

We're offering a staggering 15% off all HIRE this month . But you must register your interest now to lock in this deal for your company. Weld CD Studs fast and to last with our Machines. The Studfast hire fleet stud welders boast superior inverter technology. We can offer split payments on a purchase of a new Stud welder. Another inexpensive way to go is hire or rental. Whichever way you want to call it, you still need to purchase the chucks, you still need to purchase the studs. You can have it as long as you like and the minimum rate is per day. Carriages extra, we will be happy to arrange for it to be collected once you have finished with it, again there will be a small carriage charge for this service.

  • Not-Interchangeable
  • Complimentary Processes
  • Application Dependant
  • Design Advantages and Disadvantages
See this clinic!

Stud Welding Processes

With the Capacitor Discharge Process energy is stored in a bank of capacitors, which are charged to a pre-set voltage, determined by the type and size of stud and the parent material. When triggered...

View CD Process
Capacitor Discharge Process

A transformer rectifier supplies a fixed current power source, triggering produces a pilot arc and the stud lifts to a pre-set height.The main arc melts the end of the stud, producing...

View SC Process
Short Cycle Process

With this process, the current level and weld duration are determined by the stud diameter. Triggering produces a pilot arc and the stud lifts to a preset height. The main arc melts the end of the stud, producing a molten...

View DA Process
Drawn Arc Process

Enough of the Science?