D/F Machine Specialties will showcase several new heavy-duty automated and robotic MIG & TIG welding products at the FABTECH 2012 Welding Show in Las Vegas, NV at the Las Vegas Convention Center November 12-14. Look for D/F in booth #N2224.

Here is your most recent issue of High Current News. It's packed full of information to keep you updated with the latest MIG & TIG news, product information and updates from D/F MACHINE SPECIALTIES.

D/F is a world leader in the design, development, and manufacture of MIG & TIG welding products, consumables & accessories.

Re-tapping & Keeping Nozzle Threads Clean

Nozzle Thread Chaser TapIn general it is important to keep the weldment and welding equipment clean to produce consistent quality welds. Chasing and re-tapping the nozzle threads is an excellent way to help keep the torch clean in particular. Chasing the threads will clean out things like dirt, metal shavings, or spatter built up in and around the threads of the nozzle. In turn, there will be less chance of contaminants entering the weld pool, as well as a cleaner contact between the gas cup and the nozzle. A quick re-tapping will also straighten damaged threads.

D/F has a full line of Nozzle Thread Chaser Taps for cleaning threads, or re-tapping and repairing damaged threads on any of its MIG & TIG Air-Cooled and Water-Cooled Nozzle Assemblies and Nozzle Bodies. You can read more about them here.

All D/F Nozzles are hand checked for fit before & after plating, and checked again before shipping. If a nozzle has been installed on a new complete torch, they have also been hand checked while being assembled.

The only reason to ever take a gas cup out a nozzle is to clean it. The nozzle and the gas cup must be blown out, and all of the threads have to be wire brushed and blown out again before hand-tightening the gas cup back into the nozzle. If you can’t thread it in by hand then something is wrong. Never force a gas cup into a nozzle.

Proper Use of the D/F Nozzle Thread Chaser Tap:

  1. Make sure that the nozzle is properly supported when tapping so that it does not twist in the front of the torch body and cause damage.
    • Improper support can cause the spigots to twist off the top of the rear nozzle collar, or damage the torch internal body parts.
    • Note where the water ports go down the sides of the water-cooled nozzle (following down in line with the spigots). Too much direct pressure on these water ports could cause them to cave in and block of the flow of water.
    • Best practice is to hold the water-cooled nozzle in a vice with soft jaws, perpendicular to the spigots.
    • Over-tightening of the vice can cause damage in general.
  2. Remove the tip from the front of the torch before tapping.
  3. Lightly lubricate the nozzle and nozzle thread chaser tap before tapping.
  4. Be sure to start the tap very carefully. Do not cross thread the nozzle.
  5. Be very careful to start threads correctly. Only tap 1/2 turn at a time, always backing up and removing chips 1/2 cycle at a time before moving forward. Do not try to tap further into the water-cooled nozzle than needed or past the factory thread depth.
  6. Blow out the nozzle after tapping.
  7. Wire brush and blow off the gas cup before threading it back into the nozzle.
  8. If nozzle is badly deformed or damaged please return to the factory for a repair estimate before disposing of product (damaged parts can often be repaired).

Learn more about D/F's Nozzle Thread Chaser Taps here.

Got Projects? Submit Them to WIN!

We want to see how our equipment helps brings out the best of your creativity, skill, or whatever else helps you with your welding projects.

Submit your projects to:

Things to include:

  • Photos of your project
  • What did you make?
  • How did you make it?
  • Which D/F products did you use?

Project submissions will be put in a drawing for a chance to Win A Gift Card to your local Best Buy Consumer Electronics Store.

Words from the Editor

Greetings from D/F!
Thank you for reading our High Current News e-newsletter. Please share this issue with a friend and send us your comments.

Best Regards,
Dave Judd, Editor
D/F Machine Specialties, Inc.

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In This Issue
  • Clean Nozzle Threads
  • Got Projects? Submit to WIN!
  • New Products

New Products - Nozzle Thread Chaser Taps

The New D/F Nozzle Thread Chaser Taps are designed to chase and tap nozzle threads to clean and repair them for better conductivity and contact.
  • Chasing will clear debris, metal filings and spatter
  • Re-tapping will straighten and clean damaged threads
  • Tap sizes available for all D/F Nozzle Assemblies

Read More

Your Downloads

Did you know you can download all of D/F's Catalogs, Forms, Instruction Manuals and CAD Files at D/F's Online Download Center?
Visit the Download Center online ad D/F's web site for more information.

Contact D/F

Product Info: 1-507-625-6200
Fax: 1-507-625-6203
Online: Contact D/F

D/F Machine Specialties, Inc.
1750 Howard Drive
North Mankato, MN 56003

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© D/F Machine Specialties, Inc.
1750 Howard Drive
North Mankato, MN 56003
Phone: (507) 625-6200
Fax: (507) 625-6203

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