Content tagged with "sound"

Results: 15

Article

October 23, 2003

Plotting for success Another way of looking at this is that we get so tied up in the day-to-day grind that we forget or ignore the deteriorating conditions in the forming mill and tooling until a customer complains about weld splits. We lose our edge, figuratively and literally, and it shows up in nonparallel edges... Read more...

Article

October 9, 2003

Combating plate corrosion According to a recent study sponsored by the U.S. Federal Highway Administration (FHWA)1, with support from NACE International—The Corrosion Society, corrosion-related direct costs such as prevention methods and infrastructure repair and replacement make up 3.1 percent of the gross... Read more...

Article

July 10, 2003

Six dangerous misconceptions about crane safety Nearly every product today has a warning label. In fact, many products have multiple warning labels, lights, and bells. We even have warnings telling us our coffee is hot! It's little wonder, then, that many of us suffer from warning overload and just ignore the warnings. Unfortunately,... Read more...

Article

June 12, 2003

Inline process auditing Sound familiar? What are the options? Today's Audit Today the most widely accepted practice for checking part or process quality is random or, at best, controlled sampling. With these types of sampling, you hope those four parts you checked from 70 are enough to catch a major disaster.... Read more...

Article

June 12, 2003

Understanding weld discontinuities A welder's primary concern in any kind of work is ensuring his weld is sound. For this reason, it's important for an inspector examining the weld to be able to spot a variety of weld discontinuities, including: Porosity. Incomplete fusion. Incomplete joint penetration. Unacceptable... Read more...

Article

May 29, 2003

Handling the rush Photo courtesy of Hanna Steel Corp., Fairfield, Ala. Think delicate: an antique vase, velvet gloves, the sweet sound of string music. Then imagine a typical stamping operation: bam-bam, metal on metal, all day long. OK, now put those two together. Voil—you've... Read more...

Article

May 29, 2003

Robots and dials and knobs—oh my! It has been said that necessity is the mother of invention. You be the judge. In the late 1950s, the U.S. Navy wanted to find a way to join heavy aluminum structural sections used to fabricate motor torpedo boat hulls. Gas tungsten arc welding (GTAW) offered suitable process... Read more...

Article

May 15, 2003

Solving the mysteries of the fin pass—Part 2 First, some ground rules (assumptions) for the arrangement before we discuss some possible reasons for poor-quality seam welding and their solutions: 1. You are working with a new set of rolls and spacers. We assume that the rolls are manufactured correctly. This eliminates from the equation... Read more...

Article

December 13, 2001

Radiographic and ultrasonic weld inspection Radiographic and ultrasonic weld inspection are the two most common nondestructive testing (NDT) methods used to detect discontinuities within the internal structure of welds. The obvious advantage of both of these testing methods is their ability to help establish the weld's internal integrity... Read more...

Article

December 13, 2001

Bending tube with an all-electric machine In the tube bending industry, all-electric, CNC benders are a fairly new development but are gaining ground. They have been commercially available in Europe since 1995 and in the U.S. since 1998. Most manufacturers now either offer all-electric bending machines or are developing them. On... Read more...

Article

October 25, 2001

Sell! Sell! Sell!: Developing a profitable exit strategy for you and your company It is no secret that the tube and pipe industry is highly fragmented and comprises hundreds of small companies. Several well-financed companies currently are mulling roll-ups, or consolidations, in the industry. Unless you are one of the big players who will be left standing after the game is... Read more...

Article

August 16, 2001

GMAW vs. FCAW for beginners: Choose the best process for your small operation When you prepare to buy your first wire-feed welding machine, you don't want to waste your money on a toy that goes out with the trash in a few weeks. You probably want to use 115-V input for portability, but might want to step up to a 230-V-input machine to weld thicker material. After... Read more...

Article

July 26, 2001

How to avoid getting burned by hot work Hot work can have disastrous results in a myriad of situations: At a metal processing plant, sheet steel became jammed in a tempering mill. An operator began using a cutting torch to remove the steel. Hot slag from the torch ignited oil deposits and oil-soaked paper towels lying around... Read more...

Article

February 19, 2001

Increasing stamping press productivity in the appliance industry: Advances in press technology and materials leave their mark To the pilots of high-performance aircraft and operators of stamping equipment, one rule holds true—keep surprises to a minimum. This is especially true for stamping operations in the appliance industry. With the exception of the development of programmable electronic controls,... Read more...

Article

February 19, 2001

The fundamentals of gas tungsten arc welding: Preparation, consumables, and equipment necessary for the process Gas tungsten arc welding (GTAW) is an electric arc welding process that produces an arc between a nonconsumable electrode and the work to be welded. The weld is shielded from the atmosphere by a shielding gas that forms an envelope around the weld area (see Figure 1 ). Figure 1: The... Read more...

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