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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.

Holiday 2010 Shutdown Notice wreath
Thanksgiving: Office & Factory Closed Thursday Nov. 25th & Friday Nov. 26th
Christmas: Office & Factory Closed Friday Dec. 24 & Reopen Monday, Jan. 3rd

Tandem-Wire vs. Single-Wire Welding

Tandem vs SingleThe tandem MIG welding process greatly increases the application range of the traditional single-wire process. Depending upon the application requirements, a single-wire or tandem-wire configuration might be ideal. The tandem-wire process differs from the single-wire process in the fact that it uses two independent and electrically isolated contact tips guiding two separate wires feeding from two separate power sources; almost like having two torches in one torch body.

When A Single-Wire Setup Should Be Used
A single-wire setup is ideal for smaller applications where the weld bead is relatively small, and where the weld cycle times are shorter, such as lap & but joints, and T- & corner joints. Single-wire welding will produce a standard-sized weld which is most commonly seen in many welding applications which require smaller to medium base materials.

When A Tandem-Wire Setup Should Be Used
A tandem-wire setup is ideal when the application requires heavy-duty, long and rigorous welding cycles such as welding construction & machinery equipment, ASME tanks, and pipe & tubular components. The tandem process will effectively double the speed and greatly increase the deposition rate without compromising the weld quality. If a relatively large weld puddle is required, a tandem setup is the way to go.

D/F Recommends the W/C Robotic Tandem Torch

Water-Cooled Gasless Overlay Machine Torch

D/F Open-Arc Water-Cooled Gasless Overlay Machine Torch

The Open-Arc Water-Cooled Gasless Overlay Cladding Machine Torch is recommended for open-arc mechanized cladding applications where production demands the maximum durability and quality for multi-surfacing and rebuilding applications.

This torch is ideal for single-head machines or multiple-head machines used with hardfacing and pipe forming applications.

The Open-Arc Machine Barrel is primarily for hard/cored, metal cored, & flux cored wire diameters 7/64" & 1/8" (2.8mm & 3.2mm).

  • Greatly Reduces Maintenance & Downtime
  • Withstands 700 Preheat & 750 Amps Continuous Duty
  • Torch Longevity - Years vs. Months

Learn More About the Gasless Overlay Machine Torch

D/F Welding Tips & Tricks - Aluminum MIG Welding

There are various things to consider when performing aluminum MIG welding jobs to ensure weld quality and consistency.

  • Aluminum wire is relatively soft. Be sure to keep the gun utilities as straight as possible, and use the shortest utilities possible to prevent wire jamming.
  • To avoid a cracked weld, fill in the crater at the end of the weld by momentarily pausing in the weld pool.
  • Oxides have a higher melting temperature than the AL wire itself. Clean the wire with a wire brush lightly, in one direction to remove these oxides.
  • Remove oxides and hydrocarbons from the base materials as well.
If you have any questions about aluminum MIG welding, do not hesitate to contact D/F and talk to an engineer who will help you with your concerns.

D/F recommends the W/C Pistol Grip for aluminum MIG welding.

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 $50 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
  • Holiday 2010 Shutdown Notice
  • Tandem vs. Single Wire
  • W/C Gasless Overlay Torch
  • Aluminum MIG Welding Tips
  • Got Projects? Submit to WIN!
  • New Products
  • D/F Brett Favre Giveaway

New Products

D/F Tandem Torch - "MIG" Water-Cooled Remote Machine Torch
The D/F Machine Specialties specially designed high amp "MIG" Tandem welding torch is a critical component of the Tandem welding system, engineered with specific spacing and alignment of two contact tips to achieve proper arc control. The torch is typically rated in the 600-1300 amp range.
  • High Weld Metal Deposition Rate
  • Wide Range of Torch Sizes and Tip Spacing
  • Lowers Production Costs & Increases Productivity

Read More

D/F Brett Favre Giveaway

Are you ready for some football?


Tell us how many touchdown passes Brett Favre will throw to Randy Moss in this Sunday's Minnesota Vikings game against the Green Bay Packers on 10/24/2010. Correct answers will be put in a drawing for a chance to win a $50 Gift Card to your local Best Buy Consumer Electronics Store.

Email us your answer!

Congratulations to Rusty Warden of Mid-South Welding Supply for winning the previous issue's giveaway!

Your Downloads

Did you know you can download all of D/F's Catalogs, Forms and Instruction Manuals 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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Contact D/F | Products

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

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