Automation is harder than it needs to be. In our "Design to Automate" series, I will share with you what I have learned over the last 40 years of working in automation. We often make suggestions on how a change in material, process, or design could make a project easier, more cost-effective, or result in higher quality. Sometimes our customers listen! Other times, not so much.
The topic of today's episode is weld joint design because the devil is in the details and sometimes you need to sweat the small stuff.
When you make a closure weld on a part, any internal gas pressure can cause the weld to blow out just as you finish. It does not take much gas pressure to displace molten metal. This was the problem we encountered when making a closure weld on a small cylindrical part. In my experience, you can either increase or decrease the trapped internal volume to avoid this issue. With a large internal volume, only a small percentage of the trapped gas expands, so pressure buildup is minimal and tolerable. Same for a small internal volume, there simply isn't enough gas to expand and cause problems. Somewhere in between causes problems.
Негізгі бет Design to Automate Episode 7 - Weld Joint Design
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