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Amada Miyachi Blog

Projection Welding: Balance Heat and Extend Electrode Life

Posted by Marty Mewborne on Wed, Nov 07, 2012 @ 08:00 AM

If you read my recent blog on heat balance, you know that there are five different techniques that can be used to balance weld heat that don’t  involve making changes to materials or part design.  And at the end of the blog I mentioned that if you’re still having difficulty after trying all five of the techniques, you may want to consider adding projections to one of the parts.

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Topics: Resistance welding, spot welding, projection welding, electronic package sealing

Spot Welding Equipment Calibration: the Key to Reducing Down-Time

Posted by Marty Mewborne on Fri, Oct 26, 2012 @ 08:00 AM

Equipment calibration may not be the most exciting activity, but it can go a very long way in saving you both time and money by reducing plant down-time due to process control fluctuations.

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Topics: Resistance welding, spot welding

Heat Balance: the Key to Successful Resistance Welding

Posted by Marty Mewborne on Tue, Oct 23, 2012 @ 08:00 AM

All right folks.  Let’s cut to the chase.  Successful resistance welding boils down to heat balance:  getting both parts up to their bonding temperature at the same time.  If too much heat goes into one part, and not enough into the other, the overheated part can become weak, and the weld won’t be strong.

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Topics: Resistance welding, spot welding

Closed-Loop Resistance Welding Control: WIFM?

Posted by Marty Mewborne on Tue, Oct 16, 2012 @ 03:53 PM

What’s the fastest and easiest way to improve your manufacturing welding processes? That’s simple: use a closed-loop resistance welding power supply! And you’re thinking “okaaay…what’s ‘closed-loop’ and why do I want to use it? I know why you want to sell it – it’s a higher end power supply that costs more money, but exactly how will that help me in my process?” Well, I’m going to tell you.

What is closed loop? At a high level, closed-loop resistance welding power supplies use current and voltage feedback sensors to precisely control the energy delivered to the parts. This ability to accurately control weld energy is a key factor in overcoming problems associated with process variation and the rapid changes in resistance that happen during the weld.

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Topics: Resistance welding, spot welding

Better safe than sorry – 5 spot welding safety tips

Posted by Barbara Kuntz on Wed, Sep 26, 2012 @ 09:59 AM

Our lab gets a lot of calls asking us how to use resistance welding equipment safely, so I thought I would put down a few words on the most common issues affecting safety.

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Topics: Resistance welding, welding safety

Spot Welding? Remember the old adage “opposites attract”

Posted by Barbara Kuntz on Tue, Sep 11, 2012 @ 08:00 AM

Just a few posts ago, I shared some information on online and mobile apps that help take the guesswork out of material weldability. Since that post, I’ve gotten some feedback that leads me to believe a lot of people would like a bit more on the basic questions of “what electrodes should I use for spot welding?” and “can I spot weld (material A) to (material B)?”

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Topics: Resistance welding, spot welding

Welding Problems and Solutions - Start with these 4 Things

Posted by Barbara Kuntz on Tue, Jul 03, 2012 @ 06:00 AM

When it comes to resistance spot welding problems, I think I can say I have literally seen them all. I've been in the troubleshooting trenches for years and have worked to overcome weak welds, metal expulsion, and electrode sticking, as well as discoloration and sparking (there are many more!)

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Topics: Resistance welding, spot welding

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