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Weld shop 101

October 13, 2014

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According to the American Welding Society (AWS), there will be a shortage of approximately 290,000 welders in the U.S. by 2020. Education doesn’t fall on the shoulders of just high schools, community colleges, and technical programs, it also rests with industry professionals who have the space, equipment, and the expertise on staff to demonstrate the best practices. Arming educators with this information will only help make the next generation of welders that much stronger. For those of you who are in areas where getting hands-on training for industry leaders isn’t possible, here are a few questions educators tend to ask.

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Arc Welding 101: Negatives to whipping and weaving

October 9, 2014

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Q: When using GMAW on carbon steel materials 1/8 inch thick or greater, we use a whipping technique that you have described as a bad work habit. What are the negative effects of whipping or weaving?John S. A: As with many welding techniques, there is a time and place for everything, even whipping...

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Arc Welding 101: Sorting out SAW

October 8, 2014

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Q: What is the procedure qualification test for manufacturing pipe using submerged arc welding?Sandesh P. A: Pipe is manufactured by one of these four methods: electric resistance welding (ERW)/high-frequency induction (HFI) welding, seamless (plug/mandrel mill and extrusion), spiral welding, and...

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Arc Welding 101: Satisfying the weld inspector

October 7, 2014

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Q: We have a stiffener bar (continuity connection) in a column that calls for AWS D1.1 BTC-P4 for the flanges and fillet welds on both sides in the web. The stiffeners were field-welded. After assembling 35 connections, we discovered no fillet weld on the bottom side in the web. We can’t weld the...

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Arc Welding 101: What's up with a WPS?

October 6, 2014

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Q: Do I need a welding procedure specification (WPS) for my company when it is just me and all I do is on-site portable welding of a wide range of items?Steven B. A: Whether your company requires a WPS depends on the customers you serve. For example, if your company is hired to fabricate your...

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Electronics stamper uses hybrid press for precision parts

October 6, 2014

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Wiegel Tool Works stamps large, complicated automotive circuitry in high volumes for perfection-demanding applications. The manufacturer needed a fast press with a large bed and adjustable-stroke capabilities. It had a specially designed mechanical press custom-built for its unique needs.

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Filler metal facts

October 6, 2014

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The factors that influence filler metal consumption, such as joint design and the choice of welding process, are key to helping you better understand, anticipate, and monitor operational costs and the bottom line.

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Arc Welding 101: Vertical-up or -down in robotic welding?

October 3, 2014

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Q: We have a weldment that incorporates 0.375-in.-diameter steel rods and a 0.060-in.-thick sheet metal stamping of 1018 CR material. Each weld is the same, 0.75 in. long with a 0.25-in. fillet, perhaps including weaving. The assembly is fixture and welded robotically using GMAW with CO2 gas and...

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Arc Welding 101: Clearing up ASME B31.3

October 2, 2014

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Q: I am unclear about a section relative to the ASME B31.3 code for chemical plant piping.The area of this code referring to the type of welding process that is acceptable—328.2.2—states welding procedures qualified by others may be used, provided that the following conditions are met: The...

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Arc Welding 101: Tackling trim in pulsed MIG welding

October 1, 2014

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Q: We use the pulsed-spray-transfer GMAW process in our shop. When setting weld voltage, we can adjust the trim between 0.5 and 1.5. What do those numbers mean, and how do they relate to weld voltage?Corey G. A: Pulsed-spray-transfer welding equipment has challenged the conventional wisdom we’ve...

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P&ID software upgrades 2-D drawings, streamlines workflow

September 30, 2014

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Using 2-D software in a world that has transitioned to 3-D software can be a difficult task. When Cougar Fuel Systems looked for new software, it looked for a system that also would shorten its product design time and manage the many design and production tasks. It found a suitable system when it purchased Smap3D P&ID and Smap Piping from CAD Partner Products Inc.

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Arc Welding 101: Which welds need visual inspection?

September 30, 2014

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Q: We work on off-road and lifting equipment, and our welders are qualified per AWS D1.1. Which welds are required to be inspected visually and by whom?Ed Z. A: When you asked which welds are required to be inspected visually, I had to snicker. There was a time in my life when one side of my hard...

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Arc Welding 101: Addressing linear porosity

September 29, 2014

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Q: We are experiencing linear porosity at the furthest point of penetration when welding heavy plate. The porosity is 0.3 mm dia., but it occurs regularly in every weld we’ve sectioned so far.We are using a semiautomatic spray transfer process with a 0.045-in. ER70S-6 electrode, and a shielding...

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When fumes get out of control

September 29, 2014

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When fume extraction equipment is on the fritz, there are definite warning signs present that should alert you to the problem. The more attentive you are to what these warning signs are, and the more familiar you are with how to address these problems, the quicker you can ensure that the health and safety of shop personnel and equipment will be restored.

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Why safety is personal at Michigan metal fabricator

September 29, 2014

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Sue Rollins takes safety personally, and for good reason. The quality assurance manager and safety coordinator at Genzink Steel, Holland Mich., has a life history greatly affected by workplace hazards. To be effective and to convey her message, she makes quality and safety personal.

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