Welding Myths Part 1: Welding will distort my part

There are lots of misconceptions about welding that keep it off a designer’s list of preferred joining methods. Over a couple of blog posts, I’ll debunk a few of the most common myths and explain why they aren’t accurate. I hear this one all the time: “Welding is going to distort my part so that it will be unusable!” While there is a relatively large kernel of truth to this statement, the fact is that welding can be, and often is, a highly controllable and consequently, repeatable process.  Therefore, concerns about distortion can be factored in from the design phase and become a non-issue in production.  Plan ahead Let’s look at a real world example:  A designer is looking to produce a small rectangular electronic enclosure.  Some of the requirements are simplicity of design, low cost, hermeticity, and precise finished tolerances (+/- .005” over 6” span). In this case, the designer chose to work with thin stainless steel sheet (<.020”) cut into pieces with the shape of the top, bottom, and sides.  Disregarding weld shrinkage, when the designer sent the parts out for laser welding he wasn’t expecting his enclosure to come back smaller than the original stamped pieces. Cue the frustrated phone call: “Your welds distorted my prototype and ruined it.”  Here’s where the misconception was formed.  Yes, the part as designed ended up unusable.  BUT, had the designer added in just a little extra material to the stamped components to offset the shrinkage – in this case about .005” per weld – the welding process would have brought the part right to the required dimension in a highly repeatable fashion. In fact, this is exactly the solution that was implemented.  Now the designer has met all of his original design criteria while integrating a very cost-effective laser weld.  Many thousands of parts later, the process is still delivering enclosures that meet the stringent dimensional requirements. Check back soon for the next post on welding myths: “If it’s metal, I can weld it.”

Joining Technologies named one of Murphy’s Monday Manufacturers

U.S. Sen. Christopher Murphy of Connecticut has named Joining Technologies in East Granby, CT as one of Murphy’s Monday Manufacturers.

Murphy’s Monday Manufacturers “recognize the best and brightest of manufacturing in our state,” the Senator said.

“I am proud to honor an organization like Joining Technologies for their invaluable role in fostering our economy and supporting our workforce. The example you set as business innovator and community leader brings honor and distinction to the State of Connecticut,” Murphy said. “The manufacturing industry plays a crucial role throughout Connecticut communities, creating new jobs and accelerating our state’s economic recovery.”

Joining Technologies services include precision laser welding, electron beam (EB) and gas tungsten arc welding (GTAW), machine shop services and supply chain management. Using state-of-the art technology, Joining Technologies develops innovative, high-quality solutions for industries nationwide — including aerospace, medical devices, automotive, energy and national defense.

Go On. Give us a Good Challenge!

Got a project with technically challenging requirements? That’s just the type of project Joining Technologies specializes in.

For example, JT won a contract from the U.S. Naval Air Systems Command to design, manufacture and deliver a series of on-board battery power systems.

These systems support the Naval Air Warfare Center Aircraft Division. Joining Technologies leveraged its expertise in metallurgy, laser welding, machining and supply chain management to deliver the first prototypes to the Navy in 2016.

“We’re honored to have been chosen for such an important program for the Navy,” says Jay Drew, senior program manager at JT. “These power systems bring greater efficiencies to U.S. naval aviation operations around the world.”

Joining Technologies routinely seeks out customers with unique and technically challenging requirements.