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In the automotive body repair industry before the 1980s, oxyacetylene gas torch welding was seldom used to weld sheet metal, since warping was a byproduct as well as excess heat. Automotive body repair methods at the time were crude and yielded improprieties until MIG welding became the industry standard. Since the 1970s, when high strength ...
Galling, sometimes called cold welding, is a form of severe adhesive wear, which can occur when two metal surfaces are in relative motion to each other and under heavy pressure. Austenitic stainless steel fasteners are particularly susceptible to thread galling, though other alloys that self-generate a protective oxide surface film, such as ...
The process was also known as arc-atom welding. The heat produced by this torch is sufficient to weld tungsten (3422 °C), the most refractory metal . The presence of hydrogen also acts as a shielding gas , preventing oxidation and contamination by carbon , nitrogen or oxygen , which can severely damage the properties of many metals.
Ohio State East Hospital. The Ohio State Health System includes University Hospital and East Hospital, Ohio State's two full-service teaching hospitals.Other hospitals include Ohio State Harding Hospital, an inpatient and outpatient psychiatric hospital; the Richard M. Ross Heart Hospital, dedicated to the study, treatment and prevention of cardiovascular diseases; Ohio State Brain and Spine ...
The Mikoyan MiG-29 (Russian: Микоян МиГ-29; NATO reporting name: Fulcrum) is a twin-engine fighter aircraft designed in the Soviet Union.Developed by the Mikoyan design bureau as an air superiority fighter during the 1970s, the MiG-29, along with the larger Sukhoi Su-27, was developed to counter U.S. fighters such as the McDonnell Douglas F-15 Eagle and the General Dynamics F-16 ...
Spinning is used to make tubular (axis-symmetric) parts by fixing a piece of sheet stock to a rotating form . Rollers or rigid tools press the stock against the form, stretching it until the stock takes the shape of the form. Spinning is used to make rocket motor casings, missile nose cones, satellite dishes and metal kitchen funnels.