The avenue moves forward to the new highland 丨 to the sea into the sea, "titanium" is not easy

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The hot -rolled titanium rolling rolling rolling titanium with a width of 2040 mm refreshes domestic records; high -performance corrosion -resistant titanium welding pipes have become key components of "Hualong One"; After more than 10 years of development, Hunan titanium material processing has built an industrial chain from sponge titanium, titanium ingot, titanium belt roll to titanium welded pipes. The production and sales of titanium rolls and titanium welded pipes ranks first in the country. Domestic gaps, breaking foreign monopolies, and being applied to many "heavy weapons of the country".

"boom……"

On May 28, Hunan Xiangtu Jintian Technology Group (hereinafter referred to as "Xiangtou Jintian") under the golden titanium golden titanium cooled titanium titanium roll manufacturing workshop, a cold -rolled titanium roll special twenty -axis rolling machine is working steadily Essence

Inside the rolling machine, a roll of dark silver titanium rolls are rolled into 0.5 mm specifications. Soon, this high -quality titanium roll will become key components in aircraft, ships and computers and communications electronics.

Titanium has the characteristics of light weight, strong strength, corrosion resistance, etc. It can be applied to extremely complicated working scenarios such as space and the sea. It is an important strategic metal. The processing and development capabilities of titanium and titanium alloys have become one of the important criteria for measuring the advanced nature of a national aerospace, navigation, nuclear power, and deep sea exploration. Due to the complex titanium melting process and difficulty in processing, only China, Russia, the United States, and Japan only have a complete titanium industry production technology.

For more than a decade, Xiangtu Jintian has been focusing on titanium essence processing, and series of products such as titanium rolls, titanium welded pipes, titanium rod materials, have repeatedly filled domestic gaps, breaking foreign monopolies, and applied to many "national heavy weapons". The shortcomings of Hunan in the strategic emerging material industry have been added, and the technical problems of China's titanium industry are solved.

1. Rolling out of the most hot and hot rolling titanium rolls in China, participating in the "Deep Sea Tour Robot" project

On January 9 this year, the outdoor was cold and cold. The 2250 hot rolling line of Lian Gang, a subsidiary of Hunan Iron and Steel Group, was slowly rolling out, gathered many warm eyes.

"It's done!" There was a scream of sound.

After 3 months of hard work, Golden Titanium and Lian Gang jointly joined forces to successfully prepare an ultra -wide thin -rolled hot -rolled titanium band roll in the ultra -wide thin specifications with a width of 2040 mm and a roll weight of 10.7 tons. The history of titanium rolling rolling rolls.

"This product refreshed the record we created by ourselves, and further broaden the specifications of Jintian Titanium hot -rolled plate curls." Liu Zhengqiao, Minister of Golden Titanium Gold Technology, told reporters that the wider the titanium rolls, the widely the scenario applied, the wider the scenario of the directly applied scene. The greater the value, and the increase in costs brought by welding and quality risks. The rolling of titanium, especially if it is wider and thin, it is not easy.

On May 28, Hunan Hunan Titanic Titanium Co., Ltd., the rolled titanium ribbon codes were neatly neat. Photo by Tong Di, a reporter from Hunan Daily

Liu Zhengqiao introduced that titanium has the characteristics of large strength, small thermal guidance, and difficult to deform. When it is a molded material, these are the advantages; but when rolling processing, it is "disadvantage".

Because it is difficult and easy to break, the titanium rolling requirements of the temperature, strength, and humidity of raw materials and rolling are particularly delicate. The wider or thinner the rolling, the higher the possibility of defects.

"The temperature is low this time, and the next time is not enough. You need to simulate the test repeatedly, and you can only work hard." Liu Zhengqiao described, "Titanium is particularly active at high temperatures, just like a wild horse, the tame process is particularly difficult."

Once rolled, a crack defect appeared on the titanium roll surface. Liu Zhengqiao and his team studied for several days and never found the reason.

There are no shortcuts for technical research. The entire team collected the data of the rolling line for several years, read it for several months, and eliminated dozens of possibilities to get several suspected conclusions. Then repeat the simulation on the computer, and it took about a month to eventually eliminate the crack.

How strong is the performance of high -quality titanium rolls that have been "tame"? Kong Yan, assistant general manager of Golden Titanium, introduced: "Widely used in ships, submarines, deep -sea detectors, etc., such as making shells and structural parts of some key parts."

In recent years, Jintian Titanium has participated in the research and development of major national scientific and technological projects such as "Deep Sea Touring Robots", which is mainly responsible for the production of the main structure and the production of electronic components.

Jiang Biao, the person in charge of the project, introduced that the design depth of the deep -sea climbing robots reached 1,000 meters to 1500 meters. He said: "Titanium is extremely resistant to corrosion, at the same time, strong strength and light weight, especially suitable for application in the ocean, so titanium also has the reputation of 'marine metal'."

2. Successfully applied to "Hualong One", rewriting the global titanium welding pipe industry pattern

In November 2020, the "Hualong One" first set of condensate used high -performance titanium welded pipes localized projects were offline in Xiangtian Jintian New Materials. "This is an important part of the localization and autonomy of key nuclear power equipment materials. It is a major event in the process of nuclear power domestically produced." The academician of the Chinese Academy of Engineering, Nuclear Reactor and Nuclear Power Engineering expert Ye Qiyi praised the scene.

This humble welding pipe cannot be underestimated.

Li Junzhao, deputy manager of Jintian New Materials Technology Department, introduced that my country's nuclear power plant is basically built by the seaside. The titanium welded pipes in nuclear power engineering are mainly used to load seawater, reciprocating in the nuclear power unit, and cooling the nuclear power unit. "In a nuclear power unit, there are more than 100,000 titanium welded pipes densely, otherwise how can it be a key equipment?"

"Hualong No. 1" is a major iconic result of the innovation and development of nuclear power in my country. It is used for titanium welding pipes. It must not be allowed to have any defects, and the service life is required for more than 30 years.

On May 28, the production line of Hunan Xiangtou Jintian Titanium Co., Ltd., the employees of the abandoned units were operating an abandoned machine. Photo by Tong Di, a reporter from Hunan Daily

It is not difficult to imagine how difficult it is to develop this tube.

The titanium welding pipe used in "Hualong One" is about 18 meters in length and 2.1 cm in diameter. The size of the mineral water bottle cap is only 0.5 mm thick. The seawater is very corrosive, and the diameter is short and thin, and its welding molding and thermal treatment process requirements are extremely high.

Li Junzhao said that the indicators of nuclear titanium welded pipes are more than twice more stringent than conventional titanium welded pipes. At the same time, like rolling titanium rolls, any defects of titanium welded pipes are incorrect welding parameters, large welding currents, or mixed and rolling processes in raw materials.

"At that time, we were divided into three groups: rolls and molding, welding and detection, materials and heat transfer research. In many cases, the three groups need to conduct a meeting together, then verify one by one, and repeatedly adjust the parameters and rolls to find the problem to solve the problem. Measures. "Li Junzhao recalled.

After more than 1,000 days and nights, Jin Tianxin made a high -performance corrosion titanium welded pipe that meets the standard of the "Hualong One" condenser standard in 2019, breaking through the technical monopoly and market blockade of titanium welded pipes for nuclear power condenser. It has also gradually achieved exports and rewritten the industrial pattern of global titanium welding pipes.

3, 8 years to lane "hard bones" to help the development of large domestic aircraft

On May 31st, the large -scale fire/water rescue water and land amphibious aircraft Jianlong AG600, which was independently developed by my country, was a full -state new configuration of the AG600 AG600.

At the scene, the Dragon AG600 took off from Zhuhai Jinwan Airport, and successively completed the test flights such as speed climbing, flat flight deceleration, loose rod flight, simulation of re -flight, and landed safely after 20 minutes of flight, and the system operation was stable.

This big guy, TC18 titanium alloy, was developed by Jintian Titanium.

The Dragon AG600 is one of the "Three Brothers" in my country's large aircraft. Its maximum take -off weight is 60 tons and a maximum water load of 12 tons, which fills the gap of domestic large -scale aviation fire extinguishing aircraft.

It can be imagined how much pressure will the landing rack bear when the plane landed. Both are hard and light, titanium alloy is the best choice. In 2011, Jindian Titani, a subsidiary of Xiangtu, took over the hard "bone".

How hard is this "bone"? One of the less eye -catching "black spots" issues made the R & D team "headache" for nearly a year.

The pipes placed in the production workshop of high -performance titanium welded pipes in Xiangtou Jintianxin Materials Co., Ltd. Photo by Li Bobin

"Black spots are caused by uneven materials and analysis of composition. The existence of dark spots can easily lead to a slight cracking of the product and buried the hidden dangers of fracture." reporter.

In order to optimize the forging process, the research team worked in a workshop with a temperature of more than 40 degrees Celsius for a long time, and every detail and parameters of the forging process were paid to the forging process. , Improved the new problems in the first time.

In the end, after eight years of "Battle", the team developed a high -strength and tough TC18 titanium alloy to meet the requirements of the Dragon AG600, allowing Xiangtian Jintian to gain a foothold in the aerospace field.

At present, Xiangtou Jintian has strong technical strength on high -performance titanium alloy rods such as aircraft engine blades, aircraft frameworks, and aerospace components, and has become one of the three major suppliers of Chinese aviation high -end titanium alloy materials.

"Xiangtou Jintian has formed a complete titanium industry chain from materials to components to equipment. In the future, it will continue to carry out the development of high -end titanium materials such as aerospace and nuclear power industry. Make more explorations in the field of people's livelihood such as communications and electronic products to better serve the country and society. "Peng Dan, deputy chairman of Xiangtu Jintian, told reporters that the trend of titanium processing is increasingly alloying, ultra -thin, and titanium application scenarios. It will continue to expand.

Youth observation

Forge yourself like a titanium

Liu Zhengqiao (Minister of Technology of Golden Titanium Gold)

As a rare metal, titanium has the advantages of high hardness and strong corrosion resistance. From the fields of science and technology such as aircraft, ships, nuclear power to bicycles, badminton rackets, and glasses racks, titanium can not only go to the world and sea, and also The top materials that can be started are known as "future metals".

I am very lucky. After graduating from college, I became a scientific researcher of titanium materials; for more than ten years, I participated in and witnessed the growth and rise of the Hunan high -end titanium industry, and there was honor.

In the past ten years, what is most proud and unforgettable is that Hunan titanium people are dedicated to the development of high -end titanium materials, and the will to unswervingly follow the path of innovation.

Many people do not know that when the titanium material processing in Hunan started in 2007, there was no production line. We boldly pioneered the "Titanium Steel Union" model, and rolled out the first large roll of wide -rolled hot -rolled titanium rolls on Lian Steel's rolling machine, rewriting history.

Tang Rinbo, an expert in titanium research, resolutely returned to Hunan after retirement. As a leader in technology, Tang Lao not only led technological development, but also cultivated a large number of technical backbones. Today, Tang Lao is in his 80s and is still guiding scientific research in front line.

When participating in the development of the Laurong AG600 aircraft, in order to solve the problem of the TC18 titanium alloy "black spots" that have troubled the industry for many years, the Jintian Titanium technology team continued to optimize the process, which took more than 270 heaven to overcome the problem.

Native

It was very moved. The seniors and colleagues around him devoted himself to the research of titanium material processing. He succeeded the time and forgotten the time with himself; he was also a member of the Titanium people in Hunan. Get full sense.

Scientific research has not stopped. My ideal is that I forged myself like titanium, can withstand all kinds of strict tests, and make my own contribution to China's titanium career.

Source | Hunan Daily · New Hunan Client

Reporter | Wang Liang

Edit | Liu Ying

School Delivery | Zhao Zeqin Li Xiang

Review | Fang Xing

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