Manufacturing process method for high-steel-grade large-aperture thick-wall tee joint
A manufacturing process and large-diameter technology, applied in the field of high-grade steel-grade large-diameter thick-wall tee manufacturing process, can solve the problems of unstable mechanical properties, high labor intensity, and low efficiency, and achieve stable mechanical properties, reduced labor intensity, The effect of high production efficiency
Active Publication Date: 2013-09-04
BC P INC CHINA NAT PETROLEUM CORP +2
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Problems solved by technology
At present, in my country's oil pipeline construction, there has been a lack of systematic research on the manufacturing technology of high-grade, large-diameter, and thick-walled tees. The mechanical properties of tees are unstable after automatic welding and quenching, while traditional The traditional manual welding is not only inefficient, but also labor-intensive
Method used
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[0036] Example: This example is to produce WPHY80 material, the specification is DN1200×DN1200×DN1000, the wall thickness
[0037] 52mm tee test method.
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The invention discloses a manufacturing process method for a high-steel-grade large-aperture thick-wall tee joint, and relates to the technical fields of a non-rolling production method for a metal pipe, treatment of the metal pipe and a pipeline system. The method comprises the following process steps of: (1) detecting a material; (2) feeding; (3) prefabricating the steel pipe; (4) heating a blank; (5) pressing; (6) pulling; (7) tempering; (8) treating inner surface and outer surface; (9) performing nondestructive inspection; (10) beveling; (11) performing fault detection on a bevel; (12) detecting external appearance; and (13) marking. The tee joint produced by the invention has the advantages of stable mechanical performance, high production efficiency and reduced labor intensity.
Description
technical field [0001] The invention relates to a high-grade steel-grade large-diameter thick-wall tee manufacturing process, which relates to the technical fields of producing metal pipes in a non-rolling manner, processing of metal pipes and pipeline systems. Background technique [0002] The application of high-pressure, large-diameter, and thick-walled tees is the development trend of pipe tees for oil and gas pipeline projects in the future. At present, in my country's oil pipeline construction, there has been a lack of systematic research on the manufacturing technology of high-grade, large-diameter, and thick-walled tees. The mechanical properties of tees are unstable after automatic welding and quenching, while traditional Traditional manual welding is not only inefficient, but also labor-intensive. Contents of the invention [0003] The purpose of the present invention is to invent a high-grade steel-grade large-diameter thick-wall tee manufacturing process with s...
Claims
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IPC IPC(8): B21K1/16
Inventor 李玉卓常增顺马字川祝鹏刘金生李海量金永英
Owner BC P INC CHINA NAT PETROLEUM CORP