A processing method for the bullet tail structure of a catamaran ship

A processing method and bullet technology, which is applied in the field of ship processing, can solve problems affecting the service life of the bullet tail structure, longitudinal deformation of the bullet tail, large welding deformation, etc., and achieve the effects of ensuring longitudinal deformation, reducing welding deformation, and reducing curvature changes

Active Publication Date: 2020-03-10
GUIPING DAZHONG SHIP REPAIR MFR YARD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the possibility of accidental collision and beaching of the bullet tail structure of catamaran ships, the damage is inevitable. However, during the processing of the bullet tail, the longitudinal deformation of the bullet tail, large curvature changes, and large welding deformation occurred, which affected the structure of the bullet tail. service life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for processing a bullet tail structure of a catamaran, comprising the following steps:

[0026] (1) Lofting and numbering: Strictly follow the design drawings, use a ratio of 1:1 to loft and expand to obtain the real shape and actual size of each component of the bullet tail, and then measure the unfolded parts on the steel plate or profile Numbering, when numbering, use a metal cutting machine to spray metal powder from the nozzle of the cutting torch under the blowing and mixing of oxygen, and be melted and sintered by the flame and bonded to the steel plate, showing clear lines, and then according to the line to be cut;

[0027] (2) Processing and beveling: Carry out manual gas cutting on all parts that make up the bullet tail. After removing the free edge burrs and gas cutting spatter, the bevel or plate thickness of the part that cannot be beveled after the edge of the pre-opened parts is assembled is at Plates of 6mm and above adopt double-sided grooves ...

Embodiment 2

[0042] A method for processing a bullet tail structure of a catamaran, comprising the following steps:

[0043] (1) Lofting and numbering: Strictly follow the design drawings, use a ratio of 1:1 to loft and expand to obtain the real shape and actual size of each component of the bullet tail, and then measure the unfolded parts on the steel plate or profile Numbering, when numbering, use a metal cutting machine to spray metal powder from the nozzle of the cutting torch under the blowing and mixing of oxygen, and be melted and sintered by the flame and bonded to the steel plate, showing clear lines, and then according to the line to be cut;

[0044] (2) Processing and beveling: Carry out manual gas cutting on all the parts that make up the bullet tail. After removing the free edge burrs and gas cutting spatter, the bevel or plate thickness of the parts that cannot be beveled after assembly on the edge of the pre-opened parts is Plates of 6mm and above adopt double-sided grooves...

Embodiment 3

[0059] A method for processing a bullet tail structure of a catamaran, comprising the following steps:

[0060] (1) Lofting and numbering: Strictly follow the design drawings, use a ratio of 1:1 to loft and expand to obtain the real shape and actual size of each component of the bullet tail, and then measure the unfolded parts on the steel plate or profile Numbering, when numbering, use a metal cutting machine to spray metal powder from the nozzle of the cutting torch under the blowing and mixing of oxygen, and be melted and sintered by the flame and bonded to the steel plate, showing clear lines, and then according to the line to be cut;

[0061] (2) Processing and beveling: Carry out manual gas cutting on all parts that make up the bullet tail. After removing the free edge burrs and gas cutting spatter, the bevel or plate thickness of the part that cannot be beveled after the edge of the pre-opened parts is assembled is at Plates of 6mm and above adopt double-sided grooves ...

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Abstract

The invention discloses a processing method of a catamaran bullet tail structure, which comprises the following steps: (1) lofting and numbering; (2) machining and beveling; (3) assembly and welding:on flat steel plate, the assembling of the parts used in the bullet stern is combined with the assembling and welding of the main body of the ship, The longitudinal component inside the bullet stern is reliably connected with the strong component at the bottom of the hull stern, the strong longitudinal component inside the bullet stern extends two ribs in the cabin adjacent to the main hull, and the outer plate of the bullet stern is continuously welded with the bottom plate of the hull stern and bilge plate on both sides, and the smoothness of the outer plate is maintained. When the thicknessdifference between the bullet stern outer plate and the adjacent hull outer plate is >= 4 mm, the thicker bullet stern outer plate edge is inclined before assembly, and the inclined width is >= 4 times of the thickness difference; (4) appearance polishing. The invention can reduce the longitudinal deformation of the bullet tail, reduce the curvature change, has small welding deformation, reducesthe damage in the use process of the bullet tail structure, and has wide market popularization value.

Description

【Technical field】 [0001] The invention belongs to the field of ship processing, and in particular relates to a method for processing a bullet tail structure of a catamaran ship. 【Background technique】 [0002] Guangxi has many rivers and is a natural economic link connecting the Southwest China, Guangdong, Hong Kong, Macao and ASEAN. With the development of Guangxi's economy, the inland river ships in the region have played an irreplaceable role in promoting the circulation of materials between regions and the development of the river basin economy as water transportation. There are various types of inland ships, among which multi-purpose cargo ships with double-hull bullet tails have been widely used and promoted in the Xijiang River Basin and the Pearl River Delta, and have achieved good economic and social benefits. [0003] Due to the possibility of accidental collision and beaching of the bullet tail structure of catamaran ships, the damage is inevitable. However, duri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63B73/20B63B73/43B63B73/00B23K9/16
CPCB23K9/16B63B71/00B63B73/00
Inventor 吴金德李海森吴航宇李建华宾东成梁焕勇陈剑华周文清
Owner GUIPING DAZHONG SHIP REPAIR MFR YARD
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