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Method for solving problem of rough surface of ship plate

A technology of surface roughness and ship plate, which is applied in the new technology field to solve the problem of ship plate surface quality-surface roughness, can solve the problem of ship plate surface roughness and other problems, achieve roughness problem solving, improve ship plate surface quality, improve product quality and The effect of market competitiveness

Inactive Publication Date: 2010-04-07
QINHUANGDAO SHOUQIN METAL MATERIAL +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for improving the surface quality of ship decks, solve the problem of rough surface of ship decks, and improve the surface quality of ship decks in an all-round way

Method used

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  • Method for solving problem of rough surface of ship plate

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Embodiment Construction

[0017] Combined with a large number of test results, a set of process systems for improving the surface quality of ship plates and relevant regulations for ensuring the stable implementation of the process systems have been formulated. level to ensure that the process can be carried out stably. The representative data in the production process are shown in Table 2. Due to the influence of the production rhythm, the time in the furnace fluctuates greatly. The temperature of the furnace, the final rolling temperature and the final cooling temperature can basically be executed according to the center line of the process requirements. At present, this process system has been widely promoted, and the surface quality of the ship plate has been recognized and praised by the shipyard.

[0018] Table 2. Representative Data During Production

[0019]

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Abstract

The invention relates to a method for solving the problem of rough surface of a ship plate, belonging to the field of surface quality of medium and thick plates; the method adopts the following processes: the tapping temperature is controlled to be 1200-1260 DEG C, time in the furnace is 180-320min and the heating speed is 1.0-1.2mm / min in the heating process; in the rolling process, an austenite recrystailization zone and an austenite non-recrystailization zone are adopted to control the rolling way, a plurality of blocks are rolled in a sheathing way, so as to ensure the finishing temperature of the austenite non-recrystailization zone to be 800-850 DEG C; laminar cooling is adopted after rolling is carried out, the finish cooling temperature is 600-700 DEG C and the cooling speed is 8-10 DEG C / s. the method has the advantages that the invention is applied to the surface quality of the ship plate, by adopting the technology, the problem that the surface is rough is solved, so as to improve the surface quality of the ship plate qualitatively and improve the product quality and market competitiveness.

Description

technical field [0001] The invention relates to a method for solving the surface roughness of the ship plate, and in particular provides a new process for solving the problem of the surface quality of the ship plate-surface roughness. Background technique [0002] With the expansion of ship plate production in the field of medium and thick plates and the introduction of steel plate pretreatment equipment, quality inspectors found that some ship plates had no obvious defects before shot blasting, but there were surface defects similar to water ripples on the surface after shot blasting ,Such as figure 1 shown. This kind of defect is not obvious by naked eyes, but can be observed under strong light; the surface matrix has unevenness, and the depth is less than 0.05mm, which does not exceed the requirements of standards and class specifications; the defects are irregularly distributed on the surface of the steel plate, and the slight ones are only on This kind of defect occur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P9/00
Inventor 何元春王传财沈开照马国金刘印良王立坚杨洪智董占斌张跃飞尤利国李秋王永杰黄毅郑翠军田士平白学军沈一平
Owner QINHUANGDAO SHOUQIN METAL MATERIAL
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