Method for controlling annular gap small clearance of spherical box bottom of 5M-level thin-wall storage box

A control method and a thin-walled technology, applied in the manufacture of tools, household containers, clamping, etc., can solve the problem that the welding seam of the workpiece cannot be compacted, the assembly accuracy of the circular seam cannot be better guaranteed, and the assembly accuracy cannot be obtained. good insurance etc.

Active Publication Date: 2015-06-10
CHINA ACAD OF LAUNCH VEHICLE TECH +2
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Problems solved by technology

[0015] 1. The traditional welding seam compression method adopts the overall compression method of a single strip air bag, and there is a possibility that the weld seam of the workpiece cannot be compacted locally.
2. Reliable positioning methods are rarely used when installing and pre

Method used

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  • Method for controlling annular gap small clearance of spherical box bottom of 5M-level thin-wall storage box
  • Method for controlling annular gap small clearance of spherical box bottom of 5M-level thin-wall storage box
  • Method for controlling annular gap small clearance of spherical box bottom of 5M-level thin-wall storage box

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Embodiment Construction

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only parts related to the present invention are shown in the drawings but not all content.

[0029] figure 1 It is a structural schematic diagram of the bottom of a 5M grade thin-walled storage tank provided by the embodiment of the present invention. Such as figure 1 As shown, the spherical bottom of the storage tank is welded by the top cover, the ring and the transition ring. The method for controlling the small clearance of the annular seam at the bottom of the 5M-grade thin-walled tank spherical tank provided by the embodiment of the present invention is used to control the lower end of the annular ring before ...

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Abstract

The invention discloses a method for controlling an annular gap small clearance of a spherical box bottom of a 5M-level thin-wall storage box, and aims to realize the control on the annular gap small clearance before an annular gap of the spherical box bottom of the 5M-level thin-wall storage box is welded. The method comprises the following steps: initially calibrating a welding tool; mounting a box bottom circular ring on a welding tool mould; mounting a box bottom circular ring lower compressing tool, and compressing the lower end of the box bottom circular ring; milling the lower end of the box bottom circular ring, wherein the box bottom circular ring is milled to be level with a reference line of the lower edge of the box bottom circular ring; supporting an internal supporting tool of a transition ring outwards, enabling a transition ring external compressing tool to compress a box bottom transition ring, and ensuring that the end faces of welded joints between the box bottom transition ring and the box bottom circular ring lower end are closely fitted.

Description

technical field [0001] The invention relates to the field of welding of spherical bottoms of storage tanks, in particular to a method for controlling small gaps in ring seams of spherical bottoms of 5M thin-walled storage tanks. Background technique [0002] The storage tank of a launch vehicle is a large tank-shaped box used to store fuel. During rocket launch, the storage tank not only stores fuel but also bears the axial thrust load of the rocket. Therefore, the sealing and structural strength of the storage tank are critical. High demands were made. The storage tank is welded by the middle box body and the bottom of the box. The bottom of the storage box is generally spherical, and the middle ring, transition ring, and box bottom top cover are welded sequentially along the circular weld seam after being assembled and welded by multiple fan-shaped melon petals. made. The assembly and welding of the ring seam of the box bottom is an important process in the processing of...

Claims

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Application Information

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IPC IPC(8): B23K37/04B23K37/047B23Q3/00B23P15/00
CPCB23K9/028B23K9/235B23K37/0443B23K2101/12B23P15/00
Inventor 王国庆刘宪力李义鹏杜岩峰冯叶素张蓬韩国良陈文千乔志峰
Owner CHINA ACAD OF LAUNCH VEHICLE TECH
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