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The Cutting Top 20

February 4, 2016

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These top 20 cutting and gouging tips will help get you on your way to cutting efficiently and with good quality.

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Arc Welding 101: Writing a WPS for an unlisted material

January 29, 2016

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Paul Cameron clears up an issue regarding an unlisted material.

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Consumables Corner: Selecting the right welding process and filler metal for repair work

January 29, 2016

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The Consumables crew assists a reader tasked with repairing a tower crane.

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Aluminum Workshop: What not to do when excessive contact tip burnback occurs

January 29, 2016

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Frank Armao explains why contact tips are important in the welding process and what you shouldn't do to remedy burnback problems.

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Add-on equipment makes a difference in SMAW

January 27, 2016

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An optional digital meter for SMAW power sources allows welders to lay beads within set parameters.

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What happens when a nonwelder meets a laser?

January 27, 2016

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How does a nonwelder transition into the role of laser welding machine operator? What aptitude or experience does someone need to be successful? Practical Welding Today® sat down with Tracy Stenger of Superior Joining Technologies, Machesney Park, Ill., to find out.

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1 + 1 = Weld shop staffing success

January 27, 2016

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One aspect of the welding industry remains challenging for company management: determining staffing levels for tradespeople and supervisors at the front lines of industrial manufacturing systems and construction projects. While many people do not like crunching basic numbers, nothing beats simple math to come up with money-saving options to get through those tough economic times. The good news is that this is not rocket science. In fact, the number-crunching is so simple that it can be done quickly without any brain-numbing work.

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Metallurgy Matters: Thermal cycles, the HAZ, and the strength of martensite

January 18, 2016

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Last time we looked at how welding heat influences the heat-affected zone (HAZ) of metals strengthened by three typical hardening processes: solid-solution hardening, cold working, and precipitation hardening. That leaves one critical strengthening process to consider: transformation (martensite)...

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Aluminum Workshop: Fine-line lack of fusion and its causes

November 16, 2015

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Q: I recently fabricated a large component from 1-in.-thick 5083 aluminum. The customer required it to be radiographed. His inspector failed one of the radiographs because of a lack of fusion (LOF) discontinuity. I looked at the radiograph and I can’t see any discontinuity. Could the inspector be...

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Arc Welding 101: For the record: Grounding, work leads are not the same

November 16, 2015

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Q: I am writing this in regards to an article you wrote last year about grounding and grounds (“Achieving a good work lead connection,” Practical Welding Today, July/August 2014, p. 58). You mentioned that grounding to a structure should not be used if at all possible. My question is this: If...

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Consumables Corner: Discovering the cause of lack of fusion in PJP joints

November 16, 2015

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Q: We manufacture various products for the agriculture and transportation industries. A majority of our products are made from 6061 and 5652 aluminum and are joined with gas metal arc welding (GMAW-S) using a 5356 filler metal and 100 percent argon shielding gas. Most of the joints are partial...

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The wide world of welding stainless steel

November 11, 2015

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Welding stainless steel is not much different from that required in welding standard carbon steel, with a few exceptions. First, you must exercise more care and control with regard to heating and cooling stainless steel. Second, it’s important to properly match filler metals with the material being welded.

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A chase to the cut

November 10, 2015

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To best evaluate which process is best for you, you must first understand your application and define your needs and limitations, all while accounting for new opportunities and future goals. By doing so, you best match the system capability with your needs, allowing you to take full advantage of the productivity, versatility, and quality benefits that automated cutting has to offer.

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Arc Welding 101: Qualified versus certified—What’s the difference?

September 28, 2015

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Q: While browsing the AWS website I found listings for accredited test facilities. After a little more digging, I found AWS QC4-89, the standard for accreditation of test facilities. I was of the understanding that my endorsement as a certified welding inspector (CWI) permitted me to certify...

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Consumables Corner: Welding medium-carbon to high-strength steel

September 28, 2015

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Q: We need to weld a 1-in.-thick AISI 1050 carbon steel plate to a 2-in.-dia. A514 steel shaft. The AISI 1050 has a yield and tensile strength of 95 KSI and 115 KSI, respectively. We know we should preheat, but we're unsure of what temperatures to use or what filler metal to select. Could you...

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