Manufacturing method of pressure vessel metal tube
A manufacturing method and technology of pressure vessels, which are applied in the field of pressure vessel manufacturing, can solve the problems of low durability of metal pipes and the inability of metal pipes to meet the requirements of engineering parts, and achieve the effect of enhancing durability
Inactive Publication Date: 2015-07-22
ZHANGJIAGANG BOTIAN MACHINERY
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Problems solved by technology
[0002] With the development of the pressure vessel industry, the use of pressure vessel metal pipes in all walks of life is increasing, and the traditional metal pipes are no longer qualified for the position requirements in the project.
However, due to the difficulty of steel pipe manufacturing and welding, the durability of current metal pipes is relatively low
Method used
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Experimental program
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Effect test
Embodiment Construction
[0018] The present invention will be further described below. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.
[0019] A method for manufacturing a pressure vessel metal pipe according to the present invention comprises the following steps:
[0020] 1) Cut the entire steel plate according to the size of the metal pipe.
[0021] 2) Milling the steel plate cut in step 1).
[0022] 3) The steel plate is bent by deep drawing technology, and the bending includes pre-bending the side of the steel plate first, and then bending the steel plate as a whole. When the steel plate is bent, it is molded three times and the tensile stress is removed by solution treatment.
[0023] 4) Seam welding of the steel plate, including internal welding and external welding of the steel pipe connection end. Single-wire automatic submerged arc welding is used for welding. ...
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The invention relates to a manufacturing method of a pressure vessel metal tube. The manufacturing method is characterized by including the steps that 1, a whole steel plate is cut according to the size of the metal tube; 2, the cut-off part of the steel plate in the step1 is milled; 3, the cut-off part of the steel plate is bent through a deep drawing technology; 4, stitch welding including inside welding and outside welding of the connecting end of the metal tube is performed on the cut-off part of the steel plate; 5, the metal tube obtained after welding in the step4 is corrected and trimmed; 6, whether the metal tube is qualified is detected. According to the manufacturing method, the deep drawing technology and three-time compression moulding forming are adopted, drawing stress is removed through solution treatment, the original physical and mechanical properties of the metal plate are kept, and the durability of the metal tube is greatly improved.
Description
technical field [0001] The invention relates to a method for manufacturing a metal pipe of a pressure vessel, which belongs to the technical field of pressure vessel manufacture. Background technique [0002] With the development of the pressure vessel industry, the use of pressure vessel metal pipes in various industries is increasing, and the traditional metal pipes are no longer qualified for the position requirements in the project. However, due to the difficulty of steel pipe manufacturing and welding, the durability of current metal pipes is relatively low. Contents of the invention [0003] In order to solve the deficiencies of the prior art, the purpose of the present invention is to provide a method for manufacturing a metal pipe for a pressure vessel, which can maintain the physical and mechanical properties of the original metal plate, thereby greatly enhancing the durability of the metal pipe. [0004] In order to achieve the above object, the present inventio...
Claims
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IPC IPC(8): B23P15/00
CPCB21C37/0807
Inventor 胡和平
Owner ZHANGJIAGANG BOTIAN MACHINERY