Back to the Republic of China to be a editor

"There is not much time left for the Chinese team."

Tang Hua silently turned off the TV.

In the 1962 World Cup in Chile, the last hurdle of the qualifiers, the Chinese team rushed.

Tang Hua felt that the blame should first be held on the World Cup qualifiers.The current World Cup does not have a rigid rule of "fixed number of places for a certain continent". Asia, Africa, and North America only have half of the places. .

In the past year or two, the Chinese team has actually made great progress. In the Asian civil war, they defeated India and Japan, and in the final battle against North Korea, they won one victory and one draw, and entered the match against the European eighth team.

But by mistake, Yugoslavia did not perform well in the qualifiers and became the eighth in Europe...

Although we know that after passing the Yugoslavia test, the Chinese team will be able to qualify for the World Cup finals, but the Yugoslavia test is difficult.

……

In the last month of 1961, there were a lot of iron blocks in Tang Hua's office.

They are all 20 kg long steel plates or steel blocks. This is a high-yield-strength low-alloy steel developed by the four major special steel companies this year.

In the comparison test, after the comprehensive consideration of steel + welding process + filler + butt joint process, the GTW558 steel of Wuhan Iron and Steel Special Steel Factory narrowly beat the long GTF680 of Fulalkite Steel, and won the pressure hull of domestic nuclear submarines and next-generation conventional submarines. Steel sign.

"Our GTW558, the basic metallographic theory has two sources, one is the special steel technology of the Soviet Union, and the other is the STS low-carbon steel technology of Carnegie Steel Company. On the basis of the 633 pressure shell material, the carbon is adjusted, The amount of nickel and molybdenum added, several different formulas were trial-produced, and then their weldability and weldability were investigated..."

Manager Ma of WISCO's special steel plant is very familiar with the performance of GTW558 in his factory. The special steel used for nuclear submarines was developed two years ago. The comparative test was carried out 7 months ago, and the welding performance comparison lasted 4 months.

"Its yield strength is 558 MPa, which just meets the standard, ranking No.3 among the four samples, but our comprehensive performance is stronger than other steels."

The yield strength of 558 MPa corresponds to about 80900 PSI in imperial pressure, that is to say, GTW558 is benchmarked against American HY80 steel...

But it is only the numerical benchmark of yield strength. The material used for the pressure hull of the submarine, the yield strength is only one of several major indicators.Can this steel be welded?Is it okay to weld?Is it difficult to process?These indicators are no less important than yield strength.

The first application of HY80 on a nuclear submarine was the "Thresher" in 1958. Now the "Thresher" has been delivered to the US Navy, and... eh, it seems that it will sink in a crash in more than a year?

...hope the sub is okay.

"In the index requirements put forward by the Shipbuilding Industry Bureau, the yield strength is clearly written to be no less than 550 MPa. The research method you adopted is completely correct," Tang Hua said, "Fulaerji is in this respect. Fucked, it may be that Fute Steel is a bit too inflated."

Manager Ma: "Their yield strength was too high, and they couldn't get down."

WISCO Special Steel strictly abides by the next-generation nuclear submarine pressure hull steel standard issued by the Bureau of Shipbuilding Industry. For some reason, Fulaerji produced a sample with a yield strength of 680 MPa. This 680 MPa is HY100 The United States did not master it until after the Cold War, and the welding technology of HY100 steel caused headaches for American shipyards throughout the 90s.

Fularki's GTF680 lost in the end, because its processing and welding were too difficult to solve.

In fact, even the GTW558 of WISCO Special Steel has written a thick processing manual after smelting steel and welding materials. In January this year, more than 1 welders at WISCO will start classes to learn how to weld GTW20.

After the class, there is an internship. After the welder internship, there is a trial building of a diesel submarine using GTW558. If there is no problem, the pressure hull of the nuclear submarine will be manufactured.

Tang Hua: "With the current level of domestic comprehensive technology and technology, the steel of 550 MPa is already the limit of our ability, but it may not be possible in 20 years. In 20 years, the pressure hull of our nuclear submarine may also reach 650-700 MPa. Pa, and even with a yield strength of this magnitude, it can still be processed and welded.”

Manager Ma laughed and said, "In 20 years, after 20 years, I will be retired for five years."

Tang Hua also smiled: "If you take WISCO for 15 years and do nothing, just lie down and eat your money, then the new leaders of WISCO will definitely not let you go in 20 years. Fulaerji, Anshan, Baotou Shanghai...by then, all the good stuff will come out to participate in the bidding, and WISCO has nothing, if you take a walk in the factory after dinner, no one will push your wheelchair for you.”

……

Angang Benxi Iron and Steel, Wuhan Iron and Steel, Baotou Steel, Ma'anshan, Tangshan New Plant, Shanghai Iron and Steel New Plant, plus Fulalkite Steel, which does not make iron but only refines steel, the large domestic iron and steel enterprises have completed the group layout.

Steel production in 1961 was still a substantial increase, but it is not sure whether it will surpass Japan's steel production this year.

After the end of World War II, Japan’s domestic economic development took two “rockets”:

The first time was the Korean War. Japan accepted the military supplies order from the United Nations Army, which effectively stimulated domestic production.

The manufacturing industry recovered rapidly and developed to a higher level than before World War II.

The second time was the Vietnam War. This time, Japan, Taiwan, and South Korea shared the US military supplies order together. Japan borrowed the second rocket and became the second largest economy in the world.

Now Japan has its first rocket. ... What if Japan's second rocket doesn't get it?

Thinking of this, Tang Hua suddenly felt that Vietnam... not being able to fight is the best solution.

……

WISCO's special steel plant is indeed developing very well.The list of steel for the pressure hull of nuclear submarines has been won. In addition, there are 9 kinds of alloy steels on the nuclear submarines that are also produced by Wuhan Iron and Steel Special Steel Plant.

In addition to nuclear submarines, WISCO also won an order for special steel for the tower of Hainan Wenchang Space Launch Center. The special steel for the launch tower is not very expensive, but the quantity is particularly large. From 1961 to 1964, more than 4 tons of profiles were delivered.

There are more than 10 kinds of special steels on nuclear submarines that Wu Special Steel has dry.Not counting the currently available steel materials, there are 21 new types of steel materials specially ordered for nuclear submarines, and there are also non-ferrous metal parts, such as the materials and processing of bronze propellers are not trivial.

Basically, because the nuclear submarine project started, the Iron and Steel Industry Bureau, the Nonferrous Industry Bureau, the Chemical Industry Bureau, the Electronic Information Industry Bureau, and the entire Machinery Industry Bureau of the Ministry of Machinery Industry were all mobilized.

When Tang Hua went to the Naval Nuclear Power Office, Yu Xiaohong was sitting in the office watching the collection of essays and speeches of Hyman Rickover organized by the Intelligence Department of the General Staff.

"Old Yu, I heard that you have to read 300 pages a day after becoming a director?" Tang Hua asked.

"I read 300 pages a day in general industrial books, but for this one, 50 pages a day is enough," Yu Xiaohong said, "This American anthology is very valuable for research."

Tang Hua: "Yes, this person's position in the US Navy is similar to your current job..."

The design drawings of the Type 091 nuclear submarine are basically completed. Although the construction has not yet started, the Navy Nuclear Power Office has already produced a large-scale model and placed it at the entrance.

This 091 is almost 091...

The total length is 96 meters, the hull diameter is 10 meters, the underwater displacement is 5400 tons, and the maximum speed is 26 knots.

Both the droplet linear and single-axis propulsion methods have been verified on conventional test boats. As long as the reactor output power meets the design, there is no problem in running 26 knots underwater.

"The underwater self-sustainability of the submarine is 45 days, and it can last for 45 days in a fully submerged state. The reactor core has a life span of 10 years. Based on a 30-year service period, it only needs to replace the nuclear fuel twice before decommissioning."

Yu Xiaohong praised the performance of the 091 nuclear submarine.

Tang Hua: "I have asked the Institute of Atomic Energy to discuss the design of an improved reactor. The basic principle is to slightly increase the uranium abundance of the core, increase the core mass, and make the core life reach 15 years. In this way, the improved nuclear submarine will Only one nuclear fuel change is required before decommissioning."

Yu Xiaohong: "That's even more powerful. But the torpedo of the nuclear submarine is still pending, so I can't rest assured about the torpedo."

Tang Hua: "Yu-3 is about to undergo a deep dive test."

"Yes, the Beibu Gulf test site is ready, and I will go to Hainan next week."

Tang Hua: "I was also in Hainan at the end of December and beginning of January."

……

Qinghai Lake used to be the navy's torpedo testing center. This is an inland lake. If the torpedo is lost during the test, there is no need to worry about crooked nuts sneaking in to fish it away.

However, the maximum water depth of Qinghai Lake is only more than 30 meters. It is possible to test direct anti-ship torpedoes, but not for anti-submarine torpedoes.

The depth of the Beibu Gulf is about 200 meters, and the depth of the South China Sea south of the Beibu Gulf will increase sharply. Even a torpedo with a diving depth of 1000 meters can be tested there.