Large caliber ASME B16.47A flange and fastener matching use features
Large diameter ASME B16.47A flange is often used together with fasteners. First, the mechanical performance pattern of large diameter ASME B16.47A flange should be stolen along the rolling direction on the heat treated blank, so that the cut position is: if the blank diameter is not greater than 40mm, then sample in the center, and if the blank diameter is greater than 40mm, then sample in one quarter of the diameter. Equlength double head studs and full threaded studs shall be tested in batches. The nuts shall be tested in batch; the raw materials for fasteners shall have the material qualification certificate of the manufacturer. Fasteners are used for fastening connection and widely used in a class of mechanical parts are widely used in all kinds of machinery, equipment, vehicles, ships, railways, Bridges, buildings, structures, tools, instruments, instruments and supplies above, you can see all kinds of fasteners. It is characterized by a wide variety of specifications, different performance uses, and standardized, serialized, universal species degree. Large-diameter ASME B16.47A flange fasteners shall be sampled in batch after heat treatment, and the inspection results shall comply with the relevant regulations, and the mechanical performance of the product shall not be lower than the performance under the sampling state. The pipe large diameter ASME B16.47A flange of nominal pressure PN not less than 10.0MPa shall be tested for magnetic particle damage according to JB4730-1994 "Nondestructive Inspection of Pressure Vessel". After the flaw detection, the product will have no problem, and should meet the requirements of the large diameter ASME B16.47A flange of secondary forgings. Large diameter ASME B16.47A flat welding flange rigidity is poor, suitable for pressure p 4MPa occasions; large diameter ASME B16.47 pair welding flange, also known as high neck flange, large rigidity, suitable for high pressure temperature occasions. This year, introduced a series of expansion demand, which makes forging flange industry see hope, because the forging flange industry and shipbuilding, automobile, aircraft manufacturing, agricultural machinery, railway equipment, aerospace, weapons and other industries, these industries can maintain stable development, the forging flange industry can maintain a good momentum of development. There are three types of large diameter ASME B16.47A flange sealing surface: plane sealing surface, suitable for low pressure; concave and convex sealing surface, suitable for slightly higher pressure; mortise and groove sealing surface, suitable for flammable, explosive, toxic media and high pressure occasions.
