Steel plate for marine ocean energy source equipment and preparation technique thereof

A preparation process and energy technology, applied in the steel plate for marine energy equipment and its preparation process, steel plate field, can solve the problems of reducing the fatigue fracture toughness of steel structures, accelerating crack initiation and expansion, affecting the safety of production operations, etc., to achieve ideal tensile strength Strength, good toughness, effect of improving yield strength

Active Publication Date: 2016-10-12
HAIMEN THE YELLOW SEA ENTREPRENEURSHIP PARK SERVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Because marine energy equipment is often fixed in the ocean for operation, it is exposed to salt spray and seawater for a long time, and is eroded by the harsh marine environment for a long time, which is extremely prone to corrosion fatigue fa

Method used

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  • Steel plate for marine ocean energy source equipment and preparation technique thereof

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Effect test

Embodiment 1

[0026] The steel plate for marine energy equipment in this embodiment is composed of the following chemical components in mass percentage: 0.21% carbon, 0.55% silicon, 0.15% aluminum, 0.001% boron, 1.00% chromium, 0.55% manganese, 0.009% phosphorus, sulfur 0.002%, molybdenum 2.5%, niobium 0.05%, vanadium 0.08%, and the balance is iron and unavoidable impurities.

[0027] The preparation process of the above-mentioned steel plate for marine energy equipment includes the steps of:

[0028] (1) Smelting is carried out according to the chemical composition of the recipe amount, and the cast blank is forged into a slab;

[0029] (2) The slab is subjected to conventional hot rolling, pickling, and cold rolling; the starting temperature of hot rolling is 1200°C, and the starting temperature of cooling is 800°C. After 8 passes of rolling, the cumulative deformation is above 70%, and water cooling after rolling, Air cooling to room temperature, after hot rolling, the steel plate is pi...

Embodiment 2

[0032] The steel plate for marine energy equipment in this embodiment is composed of the following chemical components in mass percentage: 0.33% carbon, 0.85% silicon, 0.22% aluminum, 0.002% boron, 1.45% chromium, 0.75% manganese, 0.013% phosphorus, sulfur 0.005%, molybdenum 3.5%, niobium 0.1%, vanadium 0.15%, the balance is iron and unavoidable impurities.

[0033] The preparation process of the above-mentioned steel plate for marine energy equipment includes the steps of:

[0034] (1) Smelting is carried out according to the chemical composition of the recipe amount, and the cast blank is forged into a slab;

[0035] (2) The slab is subjected to conventional hot rolling, pickling, and cold rolling; the starting temperature of hot rolling is 1200°C, and the starting temperature of cooling is 800°C. After 8 passes of rolling, the cumulative deformation is above 70%, and water cooling after rolling, Air cooling to room temperature, after hot rolling, the steel plate is pickled...

Embodiment 3

[0038] The steel plate for marine energy equipment in this embodiment is composed of the following chemical components in mass percentage: 0.25% carbon, 0.65% silicon, 0.16% aluminum, 0.001% boron, 1.11% chromium, 0.60% manganese, 0.010% phosphorus, sulfur 0.003%, molybdenum 2.8%, niobium 0.08%, vanadium 0.09%, and the balance is iron and unavoidable impurities.

[0039] The preparation process of the above-mentioned steel plate for marine energy equipment includes the steps of:

[0040] (1) Smelting is carried out according to the chemical composition of the recipe amount, and the cast blank is forged into a slab;

[0041] (2) The slab is subjected to conventional hot rolling, pickling, and cold rolling; the starting temperature of hot rolling is 1200°C, and the starting temperature of cooling is 800°C. After 8 passes of rolling, the cumulative deformation is above 70%, and water cooling after rolling, Air cooling to room temperature, after hot rolling, the steel plate is pi...

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Abstract

The invention discloses a steel plate for marine ocean energy source equipment and a preparation technique thereof. The steel plate is composed of the following chemical components in percentage by mass: 0.21-0.33% of carbon, 0.55-0.85% of silicon, 0.15-0.22% of aluminum, 0.001-0.002% of boron, 1.00-1.45% of chromium, 0.55-0.75% of manganese, 0.009-0.013% of phosphorus, 0.002-0.005% of sulfur, 2.5-3.5% of molybdenum, 0.05-0.1% of niobium, 0.08-0.15% of vanadium and the balance of iron and inevitable impurities. The steel plate for ocean energy source equipment is composed of the carbon, silicon, aluminum, boron, chromium, manganese, phosphorus, sulfur, molybdenum, niobium, vanadium and iron according to specific proportioning, is especially suitable for long-term use in the ocean environment, effectively avoids cracking, and has favorable toughness and corrosion resistance.

Description

technical field [0001] The invention relates to a steel plate, in particular to a steel plate for marine energy equipment and a preparation process thereof, belonging to the technical field of new energy. Background technique [0002] Ocean energy is a kind of renewable energy stored in the ocean, including tidal energy, mechanical energy and thermal energy caused by waves. Ocean energy also involves a wider category, including wind energy over the sea, solar energy on the surface of sea water and biomass energy in the sea. China has 18,000 kilometers of coastline and 6,960 islands with a total area of ​​6,700 square kilometers. Most of these islands are far from land and thus lack energy supplies. Therefore, in order to realize the sustainable development of my country's coast and island economy, we must vigorously develop my country's ocean energy resources. [0003] Ocean energy refers to the renewable energy attached to seawater. The ocean receives, stores and distrib...

Claims

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Application Information

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IPC IPC(8): C22C38/12C22C38/02C22C38/06C22C38/18C22C38/04C21D8/02
CPCC21D8/0226C21D8/0236C21D8/0247C22C38/02C22C38/04C22C38/06C22C38/12C22C38/18C22C38/32
Inventor 张进
Owner HAIMEN THE YELLOW SEA ENTREPRENEURSHIP PARK SERVICE CO LTD
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