Aircraft carrier steel in the world only two countries can build, strictly prohibited exports, Chinese companies successfully mastered, you know?

Introduction

China has come step by step from the midst of difficulties and tribulations, and has withstood many tests, and has now stepped into the stage of higher economic and technological level, and the efforts of the nationals constitute the cornerstone of the country's development. Throughout the people's attitude in the face of difficulties, undoubtedly the traditional culture of the spiritual core to carry forward, as Liu Yuxi "Wave Amoy Sand" in the "thousand Amoy ten thousand Lu漉, blowing through the wild sand to the gold", through the trials and tribulations can be obtained in order to obtain the splendor of the people will be in such a state of mind to move forward, and to contribute to the development of the country.

01

The road to development is strewn with thorns and thistles, and innovative moves in particular are faced with unknown difficulties, but the "Ode on the opening of the upper classroom", "how can I get the fragrance of plum blossoms if I don't have to go through a lot of cold" has long been the motto of all people, and has inspired countless others to move forward positively. We have never been willing to be left behind, and the development of aircraft carriers is a testament to this attitude. After the collapse of the Soviet Union, the Varyag was sold, and our carrier building program explored its potential.

While the Varyag was extremely difficult to modify, we did not give up, and the Varyag began to be fitted out and continued to be built by us, blazing a trail of even greater excellence in the carrier business. Want to improve the carrier is very difficult, but considering the dependence on the core technology of other countries may be stuck in the neck, China then rely on the power of independent research and development in the transformation process.

02

Steel is of great significance to the construction of aircraft carriers and is one of the core issues. The Varyag was faced with dismantling of equipment and rusting, and symmetrical spherical flat steel was needed to repair it. This steel in the shape of the head presents a round ball, the body presents a flat shape, mainly used in shipbuilding, bridge building and other fields. Aircraft carriers in the process of repair for this steel is very high, so the first problem in the repair of the Varyag aircraft carrier is to solve the steel. Our country is so poor in this field that our Anshan Iron & Steel took up this burden to explore the experience and technology of this type of steel from the basis of no experience. Researcher Zhou Dan bear this difficult task, although with many years of experience as a support, but in the face of the ball flat steel this research still feel the unparalleled pressure.

It is worth mentioning that at the same time, no steel company in China had the experience and conditions to produce symmetrical ball flat steel. Zhou Dan himself knows the importance of this task, about the development of China's aircraft carrier business, ball flat steel research and development technology is imminent, so into the process of research and development and trial production. Every day will be about 20 hours of time in the laboratory and production, in the efforts, finally rolled out the first batch of ball flat steel, but Zhou Dan found that the size is not right at all, on-site observation of more than ten hours, Zhou Dan found that the first batch of this is not even a qualified.

03

The dilemma of rolling was immediately apparent, so Zhou Dan put her focus on preventing deformation in this area, she tried to fix the spherical flat steel in the heat treatment rack, which allowed the product to be produced smoothly. 2009 Anshan Iron and Steel finally delivered 200 tons of steel for aircraft carriers needs, in one and a half years to complete the task of three to five years to complete the task, through aggressive, defying the difficulties, and proved the speed of China. proved China's speed. Thanks to the efforts of Zhou Dan's team, roughly 10 times as much was produced to ensure production supply.

But task after task, Zhou Dan team once again faced the dilemma of deck steel research and development, deck steel for aircraft carrier combat effectiveness is critical, while the technical difficulty is very high, aircraft carrier steel with the world only 2 countries can build, and strictly prohibit exports, this situation can be said to make our country is facing a greater problem, but ultimately was successfully mastered by Chinese enterprises. Still relying on the road of independent research and development, so that our enterprises in this field has obtained promising results.

How difficult is it to develop deck steel? We know that the aircraft carrier is traveling in the sea, so the first thing is to solve the problem of sea water corrosion and salinity, to avoid corrosion of the deck steel to lose combat effectiveness, salinity is mainly to avoid the deck is too brittle, Japan's aircraft carriers were sunk by a few torpedoes on the defeat of this problem. In addition, the deck steel has to withstand the test of the carrier aircraft, high temperature baking, resistance to explosions, etc., are the development process to face the test.

Conclusion

Though difficult, but Anshan Iron and Steel did not give up this project, in the night and day research and development process, a heavy group for Anshan Iron and Steel research and development of five meters five ultra-wide rolling mill, bringing the world's top rolling capacity. And under the efforts of Anshan Steel, the aircraft carrier deck steel was finally developed and completed, the technical indicators reached a high level, and HSLA-115 special steel has a similar level, reached 690MPa, proving China's strength in independent research and development, creating a miracle belonging to China!