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Chinese Aircraft Carrier Steel Is Fully Made In China
Dec 29, 2017

中国航母用钢完全国产

Chinese Aircraft Carrier Steel is Fully Made in China

近年来,随着辽宁号的服役,新航母的下水,航母热持续高涨。航母的建设是系统工程,需要巨量工程技术的支持,其中最基本的就是航母用钢材。航母用钢材条件十分苛刻。首先,甲板用钢板能够承受舰载机起飞和降落过程中的强烈冲击和高摩擦力。其次,还要承受喷气式飞机高达几千度尾焰的烘烤,还得低磁性。

全世界仅4个国家生产的钢板能用于航母制造,都被视作重要的战略物资,不予出口。我国曾经一度受制于钢板瓶颈,但新航母的服役证明了我国已经有自己成熟的钢板技术。

In recent years, with the service of the Liaoning, the launch of a new aircraft carrier, carrier fever continues to rise. The construction of the aircraft carrier is a system engineering, which needs the support of a huge amount of engineering technology, the most basic of which is the steel used by the aircraft carrier. Steel for aircraft carriers is very harsh. First of all, deck steel plates can withstand strong impact and high friction during take-off and landing of shipboard aircraft. Secondly , it is also possible to withstand the baking of jet - jet aircraft up to a few thousand degrees , with low magnetism. Steel plates produced by only four countries in the world can be used in aircraft carrier manufacturing, are considered important strategic goods and are not exported. Our country once suffered the bottleneck of steel plate , but the service of the new aircraft carrier proves that our country already has its own mature steel plate technology.

最近,中科院金属研究所材料加工模拟研究团队通过对单重百吨级大钢锭的实物解剖和计算发现了稀土合金和钢水“双纯净化”现象,进一步开发后,该团队率先突破了稀土在钢中进行工业化应用的技术瓶颈,实现了在钢中添加稀土后的工艺顺行和性能稳定。

Recently , the research team of the material processing and simulation of the institute of metal research in the Institute of Science and Technology has found rare earth alloy and molten steel " double purity " through physical anatomy and calculation of single - weight 100 - ton large steel ingot . After further development , the team took the lead in breaking through the technical bottleneck of the industrial application of rare earth in steel , and realized the process sequence and stable performance after adding rare earth in the steel .

该新型技术,是对稀土的创新应用。在炼钢过程中添加稀土不是新闻,但是,添加稀土需要极高的工艺,差之毫厘失之千里。稀土被称为“工业维生素”,但是在钢中加入稀土后,钢的性能很难精确控制,世界各国都在从事相关,但决而大多数未能突破技术瓶颈,可见稀土的使用是一国工业实力的体现。

The new technology is an innovative application to rare earth. Adding rare earths is not news in the process of making steel, but adding rare earths requires a very high process. Rare earth is known as "industrial vitamins", but after adding rare earth to steel, the properties of steel are difficult to be accurately controlled. All countries are engaged in the world, but most of them fail to break through the technical bottlenecks. It can be seen that the use of rare earth is an embodiment of the industrial strength of a country.
那么,如此先进的稀土技术对我国军用舰船建造的意义是什么

So, what is the significance of such advanced rare earth technology to the construction of our military warships
首先,为我国军舰舰体材料升级换代奠定了技术基础。舰用特种钢材料具有批量小、规格多、要求高的特点,决定了各国舰船材料体系的发展原则一般都是:改进提高现有材料和发展新材料并举。我们国内在这方面也做了大量的工作,通过先进冶金技术及多种技术途径,促进了船体结构钢及配套材料技术进步。新技术的应用将提高舰船结构安全性,减轻结构重量,缩短生产周期,为海军高质量的“下饺子”提供支持。

The application of the new technology will improve the safety of ship structure , reduce the weight of structure , shorten the production period , and provide support for the high - quality " next dumpling " of the Navy .
其次,先进的稀土技术将会提高特种钢焊接效率。船体结构的强度取决于两个因素:钢材和焊接。但是在焊接领域存在这样的悖论:随着钢的强度级别的提高,钢中合金元素增多,钢的碳当量和裂纹敏感性也随之大幅增加,钢铁焊接变得十分困难。如何实现高强度舰船用钢焊接一直是世界难题。中国有了此项稀土技术后,在“双纯净化”机制下,在焊条药皮中加入稀土硅铁、稀土氧化物等物质,可以对焊缝金属起着变质和净化的效果 ,显著减少焊缝金属组织、细化晶粒、增加针状铁素数量,达到提高焊接质量的效果。

Secondly, to improve the efficiency of welding of special steel rare earth technology will be advanced. The strength of hull structure depends on two factors: steel and welding. But the existence of such a paradox in the field of welding: with the strength level of the steel, alloy elements in steel increased, carbon equivalent steels and the crack sensitivity increases significantly, very difficult. How to realize the welding steel become steel welding of high strength ship has been a difficult problem in the world. China has this rare earth technology, in the "double purification" mechanism, adding rare earth ferrosilicon in electrode, rare earth oxides and other substances, can play a modification and purification effect of the weld metal decreased significantly welding Weld metal microstructure, grain refinement, increase the number of needle-like iron, to improve the quality of welding effect.
稀土有工业“黄金”之称,中国的稀土储量世界第一,如此的自然禀赋配合先进的技术将为中国带来巨大的战略厚度。

Rare earth is known as "gold" in industry. China's rare earth reserves are the world's first. Such natural endowments and advanced technology will bring great strategic thickness to China.