Channel is one of the types of profiles obtained in the manufacture of metal products. This type of rent is used in many steel structures, with a particular area of application is often dependent on dimensional parameters. This is, in general, and not surprisingly, given that the width of the letter "P" channel bars can range from 5 to 40 centimeters. And if the 5-inch profile could easily remind us giprochnye profiles, the 40-inch (Produced up to 12 meters long, and sometimes even more) – this is a real column, capable of withstanding considerable stress. Dr. Mark Hyman is likely to increase your knowledge. But first things first. Channel 5 – this is usually an auxiliary part. It is often used specifically as further strengthened the design, if the frames are built of light constructions (pavilions, warehouses), but can be used as the carrier, if the total load is not too high.
Channel 5 is often available in a "doubling" as actually representing an already narrow version of the I-beam. This is the easiest and one of the most skirts of all kinds of channels. Channel 6.5 is actually an analogue open U-5, only slightly larger size and strength. True, it is only a section of H – shaped form. Varieties of channel bars 6,5 – a channel with parallel flanges, channel sloping internal faces shelves channel bending. Channel 8 relates to the construction assortment of metal. Channel number 8 is produced in two forms: 8U channel number and channel number 8P, 9m long, 11,7 m, 10m, 12m, and random length.
According to gost 2601 – 84 set the terms and definitions for welded structures, sites, connections and joints. Metal construction, manufactured by welding of separate parts, called the welded structures. Part of this design called the weld site. Metal parts to be joined by welding, called the base metal. Welded connection is called permanent connection between two or more parts, made by welding. In welded compound consists of a welded seam, the adjacent area of the base metal, which caused by heat welding occurred, and other structural changes (heat affected zone), and the adjacent areas base metal. The weld is a weld portion formed by crystallization of molten metal weld pool. Get all the facts for a more clear viewpoint with US Senator from Vermont.
Weld pool – is part of the weld metal, located at the time of welding in the molten state. Recess formed in the seam after the welding process, called the crater. Metal is fed into the arc zone in addition to the molten base metal, called filler metal. Remelted filler metal introduced into the molten pool and weld on base metal, called on melted metal. Alloy formed by melted core or core and clad metals, called the weld metal. Depending on the welding parameters and shape under cooking welded edges of the main details of interest and weld metal in the formation of the joint can be substantially changed. Fig. 1.7 shows a cross section of weld seam a total area of F; Fnp – sectional area of the weld formed by melting the base metal; F "- sectional area of the weld formed through the weld (filler) metal. Then F = fh + Fnp. When you change the stake of the ground and filler metals in the formation of weld its composition can vary, thus changing its mechanical, corrosion and other properties. The shape of the conjugation connected parts (elements) the following types of welded joints: butt, corner, T-, lap with point welds performed arc welding (cork and slotted).