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Repairing method for cracks of ship parts

A repairing method and technology for cracks, which are applied to devices and coatings that apply liquid to the surface, can solve problems such as damage to the main structure of the ship, reduce the reliability of the ship, and affect the aesthetics of materials, and achieve the effect of a simple method.

Inactive Publication Date: 2020-06-16
宁波海顺达船舶服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the traditional shipbuilding industry, riveting, screwing, welding and other fixing methods are often used. These fixing methods are restricted by the material, shape, thickness, size, hardness, etc., such as the connection and fixing of some thinner materials, which cannot be obtained. Satisfactory connection and fixation without compromising the aesthetics of the material
Traditional riveting, screwing, welding and other methods are prone to stress concentration when connecting load-bearing structures, causing damage to the main structure of the ship, reducing the reliability of the ship and increasing the maintenance cost of the ship

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A method for repairing cracks in ship parts, comprising:

[0022] Step 1. Use crack inspection tools to find cracks in parts. For detachable ship parts, the parts can be disassembled and identified using a crack identification device; specifically, the crack identification device is surface image recognition, that is, images are collected by taking pictures Then identify;

[0023] Step 2. Use a cleaning agent to clean the cracks; in the step 2, the cleaning method is carried out at least three times, and the area of ​​the cleaning area is greater than 0.25m 2 .

[0024] Step 3, prepare the repair material: size restoration glue, the size restoration glue includes: epoxy resin, polyamide, m-phenylenediamine, and inorganic filler; the content relationship of various components in the size restoration glue is, epoxy resin : polyamide: m-phenylenediamine: inorganic filler = 1:1:1:0.5.

[0025] Step 4. Pretreat the restoration material prepared in Step 3. The pretreatment...

Embodiment 2

[0029] This embodiment is further optimized on the basis of Embodiment 1, the crack width in the first step is not greater than 5 cm.

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PUM

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Abstract

The invention discloses a repairing method for cracks of chip parts. The repairing method comprises the steps that 1, the cracks of the parts are found by a crack maintenance tool, and for the detachable ship parts, the parts can be dismantled and identified by a crack identification device; 2, the cracks are cleaned by a cleaning agent; 3, a repair material is prepared, specifically, a size recovery glue is prepared; 4, the repair material is pre-treated, the pretreatment method comprises the step of placing an inorganic filler at 150 DEG C for 2 h; and 5, the repair material treated by the step 4 is sucked by a suction tool, and the sucked repair material is extruded and filled in the cracks cleaned in the step 2. The repairing method is simple and reliable, enough strength and reliability can be achieved on the ship parts after using, and the repairing method is particularly suitable for repairing specific deck cracks, main engine base cracks, air cylinder cracks and the like.

Description

technical field [0001] The invention relates to the technical field of ship fittings, in particular to a method for repairing cracks in ship parts. Background technique [0002] In the traditional shipbuilding industry, riveting, screwing, welding and other fixing methods are often used. These fixing methods are restricted by the material, shape, thickness, size, hardness, etc., such as the connection and fixing of some thinner materials, which cannot be obtained. Satisfactory connection and fastening effect, but also affects the aesthetics of the material. Traditional riveting, screwing, welding and other methods are prone to stress concentration when connecting load-bearing structures, causing damage to the main structure of the ship, reducing the reliability of the ship's use, and increasing the maintenance cost of the ship. [0003] Since the ship sails in complex and harsh environments such as rivers, rivers, lakes, and seas for a long time, the climate is changeable, ...

Claims

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Application Information

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IPC IPC(8): B23P6/00B05D1/26B05D7/14
CPCB05D1/26B05D7/14B23P6/00
Inventor 丁国华王伟王雷
Owner 宁波海顺达船舶服务有限公司
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