A method of manufacturing a large-diameter thick-walled flange
A manufacturing method and technology of flange cylinders, which are applied in the direction of manufacturing tools, metal processing, welding equipment, etc., can solve the problems of large error, large plate thickness deviation, welding deformation, etc., and achieve small error, small thickness deviation, and small welding deformation Effect
Active Publication Date: 2021-11-05
ZHENGZHOU NO 9 METALLURGICAL SANWEI CHEM MACHINERY +1
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Problems solved by technology
[0003] In view of the above situation, in order to solve the defects of the prior art, the object of the present invention is to provide a method of manufacturing a large-diameter thick-walled flange cylinder, which can effectively solve the large deviation of the plate thickness caused by the existing manufacturing method, and the welding process will cause There are different degrees of shrinkage, resulting in welding deformation and large errors
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[0009] The specific implementation manners of the present invention will be described in further detail below in conjunction with the accompanying drawings.
[0010] Depend on Figure 1-3 Given, the present invention comprises the following steps:
[0011] 1) Cutting
[0012] The upper ring 1 and the lower ring 2 adopt 1 / 6 blanking, considering welding shrinkage and heat treatment deformation. When blanking, the diameter of the steel plate is +10mm. Because the outer circle needs to be processed, the blanking width of the ring is +3mm, and the thickness direction of the steel plate is cut vertically. The straightness is not more than 1.5mm to ensure the machining allowance; the cylinder body 3 adopts 1 / 2 blanking, and the height is 780±3mm. In order to ensure the assembly clearance, the straightness of the whole length is required to be not more than 1.5mm, and the K-shaped 45-degree bevel is opened on both sides. , 116 pieces of reinforcing rib plate 4 blanking, in order to...
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The invention relates to a production method of a large-diameter thick-walled flange cylinder, which can effectively solve the problems that the existing production method causes a large deviation in plate thickness, and there will be different degrees of shrinkage during the welding process, resulting in welding deformation and large errors. The technical solution is that the large-diameter thick-walled flange is a ring structure, and the welding method includes the following steps: 1) blanking; 2) platform laying; 3) component welding; 4) assembly; 5) welding; 6) reinforcement Plate assembly; 7) Product inspection; the interface between the upper and lower circular seams of the large-diameter thick-walled flange cylinder and the cylinder body of the present invention is a full-penetration first-level weld, the workpiece is a ring structure, the height-to-width ratio is 6.6, and the thickness deviation is small. The deformation is small, the error is small, the service life and the use effect are greatly increased, and it is a great innovation in the production method of the large-diameter thick-walled flange cylinder.
Description
technical field [0001] The invention relates to the field of welding, in particular to a method for manufacturing a large-diameter thick-walled flange cylinder. Background technique [0002] At present, in the production process of large-diameter thick-walled flange cylinders, the existing production methods lead to large deviations in plate thickness, and there will be different degrees of shrinkage during the welding process, resulting in welding deformation and large errors, which ultimately affect the large-diameter thick-walled flange. Therefore, it is imperative to invent a new method of making a large-diameter thick-walled flange. Contents of the invention [0003] In view of the above situation, in order to solve the defects of the prior art, the object of the present invention is to provide a method of manufacturing a large-diameter thick-walled flange cylinder, which can effectively solve the large deviation of the plate thickness caused by the existing manufactu...
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IPC IPC(8): B23K9/18B23K9/32B23K31/02B23P19/00
CPCB23K9/18B23K9/32B23K31/02B23P19/00
Inventor 文琳董兆军李广胜王永超
Owner ZHENGZHOU NO 9 METALLURGICAL SANWEI CHEM MACHINERY