Content tagged with "cold"
Results: 25
Article
November 9, 2004
Selecting a tube cutting process
Tube fabricators use a variety of methods—sawing, lathe cutting, rotary cutting, supported shear cutting, dual-blade shear cutting, and laser cutting—to cut tubing from mill lengths into shorter pieces for use in final fabrication. No single method is optimal for cutting the... Read more...
Article
July 13, 2004
Is your bend good enough?
You recently acquired a pipe bender to enhance your fabrication capabilities, received an order, procured the pipe stock your customer requested, and bent it as specified. Your customer rejected the first lot. He called and complained about a hump on the extrados, and he said something about it... Read more...
Article
February 12, 2004
Gaining from friction and formability data
Figure 1 Business owners now are paying closer attention to forming lubricants. Why? Because new data has linked lubricants to an important driver of business profits—steel efficiency. With metal representing close to half of a company's total operating cost and manufacturing... Read more...
Article
January 29, 2004
Respirator selection as a business decision
Several factors can help employers select a respirator that meets the required level of protection while having a positive business impact. Using this approach, employers can make choosing a respirator a business decision that can increase productivity, decrease injuries, and decrease... Read more...
Article
January 13, 2004
Troubleshooting compression bending
Most compression bending problems are one of three types: Flattening or collapsing on the outside of the bend. Crimping or wrinkling on the inside of the bend. Dimpling on the inside of bend. Generally you can prevent these problems by implementing these standard solutions:... Read more...
Article
January 13, 2004
One system does not fit all
Breathing is something that many of us take for granted. Most don't give it a second thought—you inhale, you exhale. That's about it. But recently, and not just in manufacturing, the trend has been for employers to install better ventilation systems and provide better air... Read more...
Article
December 11, 2003
Folding technology makes sweeping changes
In particular, sheet metal was used extensively for roofing and building cladding. These applications were well-suited to the swing bending machine's geometry, and the modern metal folding industry was born. A number of German manufacturers began adding powered backgauges with... Read more...
Article
October 23, 2003
The importance of storage planning
In its most basic form, a fabricator's storage area must be a secure, dry place of sufficient size to house required items. Location and ambient conditions are the critical factors. Considering the Criteria In today's fast-paced material handling world, fabricators must... Read more...
Article
October 9, 2003
Investing in lubricants
Raw materials and overhead account for 75 percent (see Figure 1) of an average metal forming company's total operating cost. Improving these two areas can make the biggest impact on your bottom line. But what if you've optimized your material costs by paying the lowest price for your... Read more...
Article
October 9, 2003
Predicting springback in air bending, straight flanging
Editor's Note: This column was prepared by the staff of the Engineering Research Center for Net Shape Manufacturing (ERC/ NSM), The Ohio State University, Professor Taylan Altan, director. Air bending and straight flanging are the most prevalent types of bending in sheet metal forming.... Read more...
Article
September 25, 2003
Article
September 25, 2003
Roll formers look for a win
Many systems enable users to download a DXF drawing directly into the roll forming line's computer. Not everyone can be the New York Yankees, or even the roll forming version—especially in today's economic climate. It would be nice, though. The Bronx Bombers have used a fat wallet... Read more...
Article
September 25, 2003
Getting a handle on work-related hand injuries
Of the 3.6 million work-related injuries treated annually in emergency rooms across the U.S., hands and fingers are the most commonly treated body parts, according to the U.S. Centers for Disease Control and Prevention. More than 90 percent of all acute injuries in the workplace are... 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
April 24, 2003
Boatmaker finds new saw for trailer production
Recently the company wanted to increase the efficiency of its trailer-building operation. Specifically, this entailed replacing a 20-year-old sawing machine plagued by performance that was no longer satisfactory, broken blades, and poor tolerances. "We were looking for a saw that was... Read more...
Article
October 25, 2002
Considering the benefits of pulse spray transfer GMAW
Object Pulse spray gas metal arc welding (GMAW) is a versatile welding process. Sometimes welding suppliers and welding managers don't want to try it, because they don't want to change the process they're using, train users, adjust welding processes, or spend money on new equipment.While any... Read more...
Article
December 13, 2001
Pairing a servo feed with a pull-through straightener
Servo feeds have been in use for many years now. People have become comfortable with this technology and it is becoming commonplace. What is not commonplace is the knowledge that servo feeds can be used with pull-through straighteners as opposed to a conventional feed line that uses a... Read more...
Article
October 11, 2001
Interaction of chemicals used in forming and fabricating
Lubricants, coolants, corrosion inhibitors, cleaners, coatings, fluxes, and other chemicals all are used-and thus intermixed-in metal manufacturing, forming, fabrication, welding, and finishing. As a result, as manufacturers become more conscious of quality, safety, productivity, and disposal... Read more...
Article
September 13, 2001
Selecting the right materials for roll forming—Part 2
Alloyed Steel In addition to carbon, large varieties of metallic and nonmetallic elements are used to achieve the desired mechanical properties and corrosion resistance. The most frequently used alloying elements are manganese, cobalt, chromium, copper, molybdenum, vanadium, nickel, zirconium,... Read more...
Article
August 16, 2001
Sharpening for a longer life
Taking a little extra time when performing routine maintenance on your stamping tools can produce big dividends in tool life and reliability. Production stamping tools typically use hardened tool steel insert components, such as punches, matrixes, and die steels, to perform cutting,... Read more...
Article
August 16, 2001
Article
August 16, 2001
Article
July 26, 2001
Article
July 26, 2001
Article
July 12, 2001
Laser welding of stainless pressure tubes
The vast majority of welded stainless steel pressure tubing is produced with the gas tungsten arc welding (GTAW) process. This process often is referred to as tungsten inert gas (TIG) welding. However, with the recent advent of reliable, high-power laser power sources, the laser beam... Read more...
Didn't find what you were looking for? Try our search page to refine your results
