A method of manufacturing a long cylindrical mold structure

A manufacturing method and technology for structural parts, applied in the field of long cylindrical molds, can solve the problems of low production efficiency, high forming precision, and low production cost, and achieve the effects of high production efficiency, high forming precision and low production cost

Active Publication Date: 2020-11-27
WUHAN MARINE MACHINERY PLANT
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects and problems of high production cost, low production efficiency, high manufacturing difficulty and low forming precision in the prior art, and provide a low production cost, high production efficiency, low manufacturing difficulty and high forming precision. The manufacturing method of the elongated mold structural part

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  • A method of manufacturing a long cylindrical mold structure
  • A method of manufacturing a long cylindrical mold structure
  • A method of manufacturing a long cylindrical mold structure

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Embodiment

[0065] A method for manufacturing an elongated mold structure, the method comprising the following steps:

[0066] A. The cylinder body of the long cylindrical mold is divided into 7 sections and rolled into shape, and the lengths are respectively the first cylinder body (2055mm), the second cylinder body (2055mm), the third cylinder body (586.5mm), and the fourth cylinder body Cylinder (1775mm), fifth cylinder (586.5mm), sixth cylinder (2055mm), seventh cylinder (2055mm), wherein, the third cylinder and the fifth cylinder are composed of two half cylinders;

[0067] Blanking: The inner diameter of the cylinder body of the neck core mold is required to be 670mm. In order to ensure the wall thickness, the inner diameter is controlled according to 652-658mm during the manufacturing process. Theoretically, the key points of cutting the parts are shown in Table 1;

[0068] Table 1: Key points of quality control for blanking of neck core mold

[0069]

[0070] Cylinder rolling:...

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Abstract

The invention discloses a manufacture method for a long cylindrical mold structural part. The manufacture method comprises the following steps that a first cylinder, a second cylinder, a fourth cylinder, a sixth cylinder and a seventh cylinder are rolled, annular grooves of the cylinders are machined, two half cylinders for forming third cylinders and fifth cylinders are rolled, and annular seam grooves and longitudinal seam grooves of the half cylinders are machined; and annular rib plates and longitudinal rib plates are sequentially welded after the first cylinder and the second cylinder aretailor-welded to form a front-end cylinder assembly, annular rib plates and longitudinal rib plates are sequentially welded to the fourth cylinder to form a middle cylinder assembly, and annular ribplates and longitudinal rib plates are sequentially welded after the sixth cylinder and the seventh cylinder are tailor-welded to form a back-end cylinder assembly; the longitudinal rib plates and thetwo half cylinders between the front-end cylinder assembly and the middle cylinder assembly are welded, the longitudinal rib plates and the two half cylinders between the middle cylinder assembly andthe back-end cylinder assembly are welded, and a long cylindrical mold is formed after annealing is conducted. According to the design, the production cost is reduced, the production efficiency is improved, the manufacture difficulty is reduced, and the molding precision is improved.

Description

technical field [0001] The invention relates to a long cylindrical mold, in particular to a manufacturing method of a long cylindrical mold structural part, which is mainly applicable to improving production efficiency, reducing manufacturing difficulty and improving forming precision while reducing production cost. Background technique [0002] A certain type of mandrel with a neck cylinder has a total length of 11158mm and an inner diameter of 670mm. There are 20 ring ribs and 57 longitudinal ribs evenly distributed inside the cylinder. The overall structure is as attached figure 1 As shown, the number of internal ribs of the long cylindrical mold is large, and the internal space is small. It is difficult to assemble and weld each rib, the welding joints are dense, the welding internal stress is large, the welding deformation is difficult to control, and the post-weld correction is extremely difficult. It is extremely difficult to manufacture the structural parts of the el...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/24
CPCB23P15/24
Inventor 方松王法斌蒋文学
Owner WUHAN MARINE MACHINERY PLANT
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