A steel plate for marine energy equipment and its preparation process

A steel plate and energy technology, applied in the steel plate of marine energy equipment and its preparation process, can solve the problems of uneconomical use of civil structural steel, no guarantee of seawater corrosion resistance, and influence of steel gas cutting performance, and achieve outstanding substantive features , good cutting performance, and the effect of ensuring the performance of the steel plate
CN103866199BInactive Publication Date: 2016-06-08JIGANG GRP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIGANG GRP
Publication Date
2016-06-08
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a steel plate used for ocean energy equipment and a preparation process of the steel plate. The steel plate comprises the following chemical components in percentage by weight: 0.07-0.11% of carbon, 0.10-0.30% of silicon, 1.20-1.30% of manganese, less than or equal to 0.015% of phosphorus, less than or equal to 0.010% of sulfur, 0.05-0.08% of vanadium, 0.010-0.030% of titanium, 0.020-0.045% of aluminum, 0.35-0.45% of copper, 0.25-0.40% of nickel, 0.45-0.65% of chromium, 0.05-0.15% of zirconium, and the balance of iron and unavoidable impurities. The Ceq (carbon equivalent) is less than or equal to 0.45%, and the anti-corrosion factor (I) is more than or equal to 6.0. The steel plate produced by the preparation process disclosed by the invention has the yield strength of more than 500MPa, can endure a low temperature environment of 60 DEG C below zero, meets the requirements for 25-100kJ / cm of high welding heat input, is high in corrosion resistance which is 2.05 times that of a plain carbon steel, and is good in direct cutting performance in a normal temperature environment.
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Description

technical field

[0001] The invention belongs to the technical field of steel plates and their manufacture, and in particular relates to a steel plate for marine energy equipment and a preparation process thereof. Background technique

[0002] Marine energy equipment mainly uses tides, ocean currents, waves and seawater temperature differences for energy development. Marine energy equipment is quite different from land environment. An important factor is that the marine environment corrodes equipment very seriously. Therefore, the steel used for marine energy equipment must meet the following requirements Two requirements:

[0003] 1) Meet the service conditions

[0004] Marine energy equipment components operate in fixed sea areas all year round and are surrounded by a saline atmosphere. Not only must they withstand the erosion and damage of natural forces such as waves, submarine earthquakes, and low temperatures, but they must also fully consider various harsh sea conditi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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