Rocklin Manufacturing Blog

Posted by Ross Rocklin in Rocklin Mfg on 1/23/2019

Any punching and stamping operation knows all too well the damage, costs, and lost time that slug pull creates. Fortunately, there is an easy solution to make these headaches go away – and never come back.

What’s slug pull?

Slug pull occurs when slugs, or the scrap produced during the punching process, are pulled up from underneath the panel or sheet that is being punched. The slug sticks to the punch face instead of falling out of the die, causing damage to the part and the die. As machines operate faster in strokes per minute, this problem is heightened.

Rocklin Manufacturing Mural

What’s The Solution?

The Rocklinizer Carbide Application Equipment offers a proven, simple, and cost effective solution to eliminate slug pull. Through its proprietary spark deposition process, the Rocklinizer applies a precise amount of tungsten carbide, titanium carbide, or Rockhard electrode material to metals, tools, and dies to prevent wear, increase life, and improve gripping. For punching and stamping operations, the process involves applying tungsten carbide to the punch and inside the die button. The portable Rocklinizer with its handheld applicator makes this a simple, quick, and repeatable task that can be done in-house.

Rocklinizer Model 950

How Do I Do It?

We’re glad you asked. Using the Rocklinizer applicator on a desired setting, simply apply a uniform coating of tungsten carbide to the bottom half inch of the punch to prevent wear and galling and to retain sharpness. Then coat inside the die button where the punch will go, applying 3-4 stripes on the wall of the round die button. This will keep the die in the button instead of following the material out. Coat up to the edge but not to the edge, leaving about 1/16" from the edge and coating down into the die button about 1/2". It’s that simple.

Punching & Stamping Action Shot with Sparks

Does It Really Work?

Yes! Punching and stamping operations around the world have relied on the Rocklinizing process to eliminate slug pull for decades. But don’t just take our word for it. Here are just a couple examples of our many satisfied users:

We have been using the Rocklinizer for approximately 8 months now and we find it indispensable in our tooling maintenance operation. This is the third company that I have worked for, that I have brought this technology to. Our biggest use is on punches. We punch a tremendous amount of high strength steels and in the past have had problems with slugs “pulling” and not ejecting properly. With a couple of well-placed touches with the tungsten carbide, the problem goes away, and we have noticed increased die life.

- Jack Pennuto, Roller Die & Forming, Louisville KY

Having been in the stamping industry for many years, I recognize the value – and time savings – your products can produce. We have used the Rocklinizer to fit loose die buttons, for slug retention, and for oil breaks on form dies. The advantage of being small enough to be portable has proven itself several times. We were able to service dies while in the press, allowing minimal lost production time. I estimate the purchase price of the Rocklinizer was recovered in less than 6 months. Your products are a “must have” for any die shop. With today’s tight economy, time is one element we can be competitive with, and the Rocklinizer can be a great time saver. Thanks for being there with a quality product.

- Paul Reichle, TG Missouri Corporation, Perryville, MO

So, What Now?

Contact Us to learn more or to arrange an on-site demo by one of our qualified sales representatives. Let the Rocklinizer become your very own slug pull assassin!


Tags: Punching , Stamping , Slug Pull , Rocklinizer , Model 950 , Carbide Application Equipment

« Back