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Articles tagged with "coils"
Results: 18
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Protecting surface-sensitive materials in coil processing: ArrayArray
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Maintaining a slitting line: Tips for extending equipment lifeA slitting line can operate efficiently for 20 or more years if properly maintained. Modern slitting lines are high-performance machines that are intended to produce 24 hours a day, 365 days a year. As a result, stampers must be sure that all line elements are properly maintained, which represents a titanic effort if you don't understand what components are critical.
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How to avoid slit-in coil slitting problems: Controlling variables prevents edge wave, width inconsistencies, burrsProblems that can arise during metal slitting include poor edge quality, edge burr, edge wave, camber, crossbow, knife marks, and slit width that is out of specification. Some slitting problems can be attributed to poor metal quality; however, it is much more common for the problems to be caused by other variables and factors during the slitting process.
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Feed to registration: A different way to process round, nested parts efficientlyFor applications such as clutch disks, oil seals, oil filters, and other round stampings, feed to registration with scroll-slit material can reduce scrap rates and, in some cases eliminate the need to retool the job.
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Holding the line on metal costs: Reducing coil line scrap can expand your bottom lineStampers and roll formers can look at edge trim, heads, tails, skeletons, and coil damage for ways they can reduce scrap to hold the line on metal costs.
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Doing its level best: Automotive blanker's leveler eliminates costly shape defectsA precision roller leveler, installed between the coil payoff reel and the press equipment, allows an operator to stretch the edges when necessary to compensate for loose centers or stretch the center to compensate for loose edges before the blanking operation.
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Roller leveling 101: A review of the basicsEvery metal coil has unique characteristics. Leveling is achieved by precisely bending metal strip back and forth as it's passed through a series of small-diameter offset rolls.
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A guide to fabric slitting line tension rolls: Understanding composition, construction is key to optimizing performanceCoil processors have several choices in the rolls they use to put tension on the coil. One of these choices is a pair of nonwoven rolls. They act like sponges in that they remove lubricants, dirt, and metal fines from the metal. Understanding how nonwoven rolls are constructed and how they work can help coil processors extend their service life.
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For flawless cosmetic finish, start at the head: A clean straightening head prevents debris damage during coil feedingStamping cosmetic parts in coil feed lines can be challenging. Cleaning the coil feeding head properly can eliminate waste or scrapped parts caused by debris and contamination.
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Choosing between feeding your new stamping line coil or blanks?: Maybe you should feed it bothStampers today need to process more grades and types of material than ever before, yet are under relentless pressure to reduce costs. They increasingly rely on systems integrators and equipment suppliers to design and install versatile stamping lines with quick-change capabilities. A notable case was that of a truck frame and chassis components manufacturer. It worked with vendors to develop a line that processes material up to 0.280 in. thick and 72 in. wide, in a range of yield strengths, in three forms – coil, blanks, or sheet.
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Protecting surface-sensitive materials in coil processing - Three potential danger areasAs manufacturers worldwide strive to reduce costs and streamline their production processes, the market for surface-sensitive materials continues to expand. Surface-sensitive materials include all prepainted steel products and nonferrous decorative materials, such as copper, brass, and stainless steel.
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Coil feed line considerations when stamping HSS: Making adjustments for stronger steelWith its higher tensile and yield strengths, HSS is stronger at any given gauge than conventional "mild" steels. Initially, lighter-gauge HSS was used to replace heavier-gauge mild steel to reduce weight in many automotive parts, and this continues to be the most widely used application for HSS. However, as a new trend to run thicker and thicker gauges of HSS continues, stamping fabricators are evaluating their press feeding and coil handling equipment, as well as press tonnage capacities and die designs to ensure that these harder parts can be formed effectively. The dynamics of HSS have a bearing on feeding, straightening, and coil handling equipment.
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Understanding press feeds: A primer for the ‘nontechie’Major technology shifts in how stamping presses are fed have allowed press feed technology to evolve, enabling stampers to realize increased processing speeds, improved processing flexibility, easier setup, and better quality and reliability. Even with today's advancements, a press feed must meet three basic and important criteria to be successful: Setup must be flexible. It must deliver the material with sufficient precision into the tool and die. It must feed at the correct time. Advancements in feed technology include pilot release, space-saving line configurations, transfer/progressive operations, and scratch-free processing.
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Stamper rebuffs recession with retool: Magnetic die handling, new press cell, coil feeder provide means to weather stormRichland Manufacturing, a subsidiary of Eagle Wings, a tiered automotive supplier, retooled with a new stamping press cell equipped with an electromagnetic die handling system. The retool efffort also included installation of a 330-ton tie-rod type press, and a compact coil feeder.
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The pressure is on: Prolonging die life with the help of sensor filmThe traditional method of measuring pressure distribution in stamping operations—the die spotting blue technique—reveals the pressure points without actual pressure readings, making it difficult to balance in relation to other die components. A thin, flexible, Mylar-based sensor film that instantly captures and permanently records pressure distribution and magnitude between any two mating or contacting surfaces has emerged as an alternative to traditional pressure testing.
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Happy New Year!: Make 2006 better than 2005How can we make 2006 better than 2005? One way is to adopt a few work-related new year's resolutions. The author lists five factors that hold the industry back--factors that everyone should resolve to overcome for a successful year.
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Eliminating problems that cause flaws: Part II: Focus on the materialProblematic material? Yes, bad coil is out there it could be mislabeled; the yield strength could vary from one part of the coil to another; it might have damaged edges; and so on. If your mill is producing bad tube, the problem might be the material, but don't blame the material unless you're sure the tube or pipe mill is in top condition. In the second part of this two-part series, columnist Bud Graham discusses steel coil, how its characteristics can vary, and how these variations can result in substandard tube.
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Envelope, please!: Announcing the winner of the caption contestBud Graham revisits his January/February column on problems that plague tube mills (or nearly any manufacturing company, for that matter) and shares some reader feedback. Also, he provides the runners-up and winner of a caption contest for a photo that also appeared in the January/February issue.
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