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Articles tagged with "metals"
Results: 21
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Cutting exotic alloys: Circular saw helps shop land aircraft tubing projectCutting tubing with a circular cutoff saw is a common metal fabrication operation. This type of saw can produce a smooth finish that requires little secondary finishing.
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Where abrasive waterjets shine: No-HAZ process makes inroads into HSS, metallic composites, special fabricationsAbrasive waterjet's cold-cutting and omni-directional capabilities make it especially well-suited to cutting unusual shapes out of exotic and heat-sensitive materials. Also, because abrasive waterjet is a cold-cutting process, it does not create a heat-affected zone (HAZ), which can make it more difficult to execute downstream processes, such as welding.
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It's all about whyTalk about a can of worms ... From crystalline structures to phase diagrams and interstitial solutions, from microstructures to allotropic transformations, it sometimes seems that for every question metallurgy can answer, for every problem it can solve, it creates two more.
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The structure of metalLet's start with the obvious: Molten metals have no particular structure. The atoms that make up that metal are just whipping around helter-skelter—at a high rate of speed—with no real orderly, defined pattern.
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Considering thermal processes for dissimilar metals: Joining steel to aluminum in heat-intensive applicationsKnowing how to weld dissimilar metals is becoming more and more important. One reason is that it's often impossible for one material to provide the optimum chemical, physical, and mechanical characteristics needed for an application. For this reason, as well as cost efficiency, technology specialists are experimenting with different joining processes to weld bimetal joints optimally.
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Welding's effect on strengthening steelWelding can severely influence strengthened or hardened metals, depending on the hardening technique used. Because of this, post-weld heat treatment is often very helpful in maintaining weld joint strength because it softens or tempers any martensite or bainite that formed in the HAZ.
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Guidelines for forming high-strength materialHigh-strength materials are becoming more common in stamping, especially for the aircraft and space industries. Although they all have their own specific features, they have some common characteristics and typical reactions to stretching and drawing.
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Defining material specificationsThe root cause of splitting problems in deep-drawn parts often is that the process is not designed and engineered to accept the full range of mechanical properties within the ASTM specifications.
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Measuring the plastic strain ratio of sheet metals: A useful tool for evaluating materialDetermining how much a metal can deform before thinning or fracture occurs is necessary for designing a reproducible forming operation. Testing the incoming sheet material is also essential because material properties may vary from coil to coil and affect the part quality and scrap rate. Understanding a material's plastic strain ratio and how to measure it are crucial in accurately establishing a material's formability.
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The nanofiber factor: Nanofibers can mean a big difference in cartridge filter performanceNanofibers--fibers 1,000-times smaller than the diameter of a human hair--can help to improve filtration efficiency, filter cleanability, filter life, and energy consumption when the cartridge filters are used properly.
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Welding specialty metals safely: Taking a three-tiered approach to safetyThis article outlines dangers of fume exposure to welders using exotic or specialty metals. The author offers a three-tiered approach to protecting the welder from fumes.
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Special slitting for specialty metals: Stainless steel has its own issuesMany of today's consumer products, commercial and industrial processing machines, and automotive components are being exposed to continually higher temperatures and more severe corrosion.
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Die building: Three important processing questionsIn any stamping process including progressive dies, transfer dies, or line dies, three factors are essential to consider when processing a piece of flat metal into a finished part: What is the metal? What is the metal's thickness? What are the part tolerances?
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Draw forming: ArrayArray
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Draw forming Part III: Connectivity: Part III: ConnectivityThe connections between product conditions and product input variables for draw forming must be made through the intermediary transformation characteristics: plastic strains and displacements. So all product requirements must be redefined as the changes (or transformations) required of those two characteristics.
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Know your bending basics—Part 1Knowing how metal bends and what factors come into play during bending -- especially wipe bending—can make a positive difference in your stamping operation.
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Draw forming: ArrayArray
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Don't get stuck wondering about composites: If you have questions about joining composites and their relationship with metal, we have answersAutomakers and other manufacturers are interested in utilizing composites more in their manufacturing operations. Composites come with their own set of challenges, and one of the most important challenges is how to join the engineered material to a metal correctly using an adhesive. When joining materials, adhesives evenly distribute loads and reduce labor time.
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Using narrow-gap GTAW for power-generation equipment: Techniques and applicationsNarrow-gap gas tungsten arc welding (GTAW) frequently is used to weld regular and multilayer high-chromium steel for power generation boilers, stainless steel for nuclear power generation equipment, INCONEL® alloy and other high-alloy steels, and thick-wall stationary pipes.
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Selecting the right abrasives for your operationWhen it comes to weld preparation, choosing the right abrasive wheel for your grinder can make your job easier. Just grabbing your grinder and cleaning up the weld area can result in poorly prepared joints, cross-contaminated welds, and more wear and tear on the tool and the operator.
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New dimension, familiar direction: H.W. Metals invests in a laser cutter for jobs where plasma doesn’t cut itH.W. Metals offers punching, shearing, arc welding, machining, oxyfuel cutting, and standard and high-definition plasma cutting. The company found that there was more and more work it couldn't do for its customers because some jobs required laser-cut parts. The company decided to purchase a laser to expand capabilities in its current markets by offering an alternative to plasma cutting. In October, the company installed a Prima Maximo laser cutting system, which will allow the company to provide more capabilities to existing customers.
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