Idiotic yet intricate plots, raunchy, gooey close-up sex and great, fresh faces you may have never seen and may never see again. Each tape comes with original box art work, funny introductions by the series host, Horny Herm, a man so stupid you'll think this is a gag, but it's not, as well as some previews of vintage X trailers. Scratches and marks abound, but we cleaned and transferred them our selves and despite their worn out look the quality is just fine, in fact their condition only adds to the atmosphere.
Distribution of aluminum shipments by a-top major market and b-bottom product form in major U. The inter-relationships among the alloy development, process innovations, and markets are highlighted. Omitted are details about patent literature or the inception of many technologies; the major criterion for placement on the list was impact on the total industry.
Following is an analysis of ten innovations that influenced aluminum production methods and markets. Although Alcoa was the source of much of the historical perspective, two factors may excuse this to some degree: Supplies were limited by difficulties with casting and ingot quality, however. The tilt molds suffered from macrosegregation, porosity, and a tendency toward severe shrinkage cracking when the alloy content increased.
Alcoa fabricating plants coped with casting inefficiency, poor ingot quality, and size limitations. Using the direct chill DC process, it was possible to drop the ingot continuously and avoid the turbulence associated with pouring metal into the old tilt molds.
The plants built by Alcoa for the war effort incorporated this technology to make aluminum products for the aircraft industry. In addition to allowing for larger ingots, DC casting helped improve product characteristics.
Figure 4 shows the advancements in average mechanical properties and fatigue-endurance limit for alloys and as DC casting became the standard within the U.
Alloy tilt-mold ingots, which cooled extremely slowly after solidification, required only modest thermal treatments to produce fine-grained products. However, the more rapid solidification of DC ingots resulted in significantly more manganese in solution as well as problems with coarse grain size.
Anderson and others solved those problems by applying high-temperature homogenization practices to the ingot. As the product-size capabilities increased with DC casting, so did the capability to develop new alloys, such as high-strength alloyintroduced during World War II. In the s, new markets for shipbuilding required large ingots of higher magnesium 5xxx alloys such as and Other high-magnesium alloys, andwere developed in conjunction with horizontal DC casting in the s to supply the growing can-sheet market.
Neither could the coils of 3xxx or 5xxx alloy can sheet be produced in the economic sizes demanded by the beverage-can industry. A timeline for aluminum product development. Typical DC cast a-top extrusion logs and b-bottom sheet ingot used in the manufacture of modern aluminum wrought products.
Improvement in minimum mechanical properties and typical fatigue performance of alloys and in the T4 temper made possible largely by using DC-cast ingot for the manufacture of wrought products. Forged aluminum propellers were used on airplanes as early as Bythe major heat-treatable systems, aluminum-magnesium-silicon, aluminum-magnesium-copper, and aluminum-magnesium-zinc, had been mapped out by researchers.
Because of their high strength, toughness, and fatigue resistance, modifications of 24S as well as the original alloys are still widely used today for aircraft applications. Alloy 75Sdeveloped during World War II, provided the high-strength capability not available with aluminum-magnesium-copper alloys.
Modifications to the base alloy composition resulted in higher toughness alloys and while the T7xx tempers alleviated stress corrosion and exfoliation problems inherent with the T6 temper.
The composition of alloy was designed to reduce quench sensitivity in thick-section T7xx products. Additional development has extended the ability of aluminum alloys to reduce weight and increase aircraft performance.
This development continues today, with the T77 tempers being utilized with special alloy compositions to attain levels of strength and corrosion performance not matched by previous materials. The demand for can sheet has driven continuous improvements in all aspects of the sheet production process, including technology to make recycled cans a preferred and economical source of metal for new cans.
Commercial cans initially were produced by Coors Brewing Company from impact-extruded 1xxx-O slugs and, later, from relatively thick 3xxx-O sheet. The real breakthrough, though, came when Reynolds Aluminum developed draw-and- iron technology for the use of hard H18 and H19 tempers.Jul 11, · Parents: Here's How To Pick The Best Kids Apps For Family Vacations: NPR Ed A handy guide to choosing fun and educational media for kids this summer.
Ed Sanders' unnerving and detailed look at the horror dealt by Manson and his followers is a classic of the true-crime genre. The Family was originally published in and remains the most meticulously researched account of the most notorious murders of the s.5/5(4).
The Columbine High School massacre was a school shooting that occurred on April 20, , at Columbine High School in Columbine, an unincorporated area of Jefferson County (Jeffco), Colorado, United States, near Littleton in the Denver metropolitan area. The perpetrators, twelfth grade students Eric Harris and Dylan Klebold, murdered 12 students and one teacher.
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Get links to your favorite show pages. Are you sure you want to remove The family from your list? Subjects Accessible book, Biography, Case studies, Crime, Criminals, Mass murder, Mass murderers, Murder, Protected DAISY, Trials (Murder), .