The Wuhan Iron and Steel Cooperative R&D project led by Peng Hui is to reduce the oxygen content of special steel by improving manufacturing processes and processes.

Their R&D goal is to reduce the oxygen content of special steels to 4 pp.

This is just an ideal goal, in fact, Wuhan Iron and Steel, including Peng Hui's team, did not have much hope.

Therefore, they also have a secondary goal, which is to steadily reduce the oxygen content of special steel to less than 5pp.

One of the most important is 'stability, two words.'

Now the Wuhan Iron and Steel Research Institute also has the means to manufacture special steel with an oxygen content stable at 5pp, but the manufacturing process involved is extremely complex and the requirements are very high, and the corresponding cost will be greatly increased.

If special steel and bearing steel with an oxygen content stable at 5pp can be manufactured by conventional means, it will also have a certain competitiveness in the international market.

The world's most high-end technology can only produce steel with an oxygen content of 4pp.

It is still very difficult to achieve even the second-level goal, and Peng Hui's team has spent more than 40 million yuan and has achieved nothing so far.

Of course, it can't be said that nothing has been found, and some of their experimental data are also very valuable.

However, there is no research progress, and they do not know which way can definitely help to reduce the oxygen content of steel.

With a single data, we can know that the concept of reducing the oxygen content of steel to 4pp.

For example, the oxygen content of ordinary steel in the international market is between 100pp500pp.

If the oxygen content can be reduced to 100pp, it is already a very good steel, and under 50pp, it is generally a special steel.

Bearing steel is a special steel among special steels, and the requirements for oxygen content values are so high.

This kind of world-class research must achieve some new methods, rather than doing research by conventional means.

Peng Hui's team experimented with several new methods, such as vacuum plastic, rapid cooling, cooling and pressurization, and many steps were carried out under vacuum to further reduce the oxygen content of the steel, but the results were not satisfactory.

Although their research has not progressed, because of the use of many new methods, the experimental data is still very valuable.

Now these experimental data have been put into Wang Hao's computer.

He took a closer look at the data, and then he set up a research mission to reduce the oxygen content of steel.

[Task 4]

[Research Project Title: Reducing Oxygen Content in Bearing Steel by Analyzing Experimental Data to Improve Manufacturing Processes (Difficulty: A.)] 】

[Inspiration value: 0.] 】

After establishing the task, Wang Hao saw that the difficulty was not surprising, similar data analysis and research, the difficulty can be at the A-level level, which is already very good.

A few years ago, Wang Hao participated in the strength research of titanium alloy of Peng Hui's team, and also did data analysis.

After classifying and summarizing the information, Wang Hao already had a general direction in his mind, and he immediately found Chen Mengmeng and Xu Jie.

Chen Mengmeng officially graduated this year and was hired as an associate professor by Xihai University and served as Wang Hao's daily work assistant.

Xu Jie has not yet graduated with a Ph.D., he is studying for a Ph.D. under Zhang Zhiqiang, and belongs to the research direction of mathematical computers.

Now Wang Hao likes to ask Xu Jie to help solve some of the mathematical computer work in his hands.

Xu Jie's mathematics level is not as good as Chen Mengmeng, Helen and others, but the most important thing is that he can do better than others in the direction of combining mathematics and computers.

Wang Hao found two people and explained his work.

In simple terms, write code.

Because of the invalidation and irrelevance involved, and the fact that there are many difficult mathematical computer transformations, the code cannot be written by a single person, and it is necessary to have a deep understanding of discrete mathematics and probability.

So it's just right to hand over the work to Chen Mengmeng and Xu Jie.

……

Chen Mengmeng and Xu Jie's level is indeed not bad, and it took them a total of three days to complete all the code writing.

At the same time, Wang Hao also established a mathematical model.

Combined with the written code, the data in the data was analyzed, and a series of results were obtained.

After that, it's mathematical analysis.

The follow-up work was relatively easy, because of similar experience, and finally made a graph to analyze the deviation value according to the derived function.

"That's too low!"

Wang Hao looked at the data in the chart and pressed his head with a headache.

Xu Jie looked at the chart data and couldn't help asking, "Mr. Wang, what does this deviation index represent?"

"It means that we rely on our analysis to improve the process, and the improvement is very small." Wang Hao said simply, "As you know, we are analyzing the research data of a special steel."

"Based on the results of the analysis, we need to improve the manufacturing process and process, that is, to determine which steps are effective, which are not, which steps work well and which steps do not......

"If the deviation of the experimental data analysis results is too small, it means that the results we get may not be satisfactory......

He sighed again.

Xu Jie thought about it and nodded, and asked with some doubts, "It's effective after all, after all, we have already analyzed the deviation."

"That's why I said it didn't work well."

Wang Hao said with a sigh, but he knew that there was no way to continue his research, because the task had been completed and the inspiration value was no longer increasing.

In other words, with the data sent by Peng Hui's team for analysis, what they can do is already the limit.

"If you want to reduce the oxygen content of steel even further, you have to add a new process or do it in a new way."

"I guess Peng Hui hasn't used this method yet......

Although he was not satisfied with the analysis results, Wang Hao still sent the final results to Wan Yiming, and said a few words in particular, "The deviation value of this result is very small, and you can improve the manufacturing process according to the results, and it is estimated that the effect is not very good."

"If you want to further reduce the oxygen content just now, you have to add new methods."

"So be it!"

"You tell Professor Peng to send a special team over and we can discuss it together."

This is the method that Wang Hao came up with.

There are many ways to make materials, and he can discuss them with professional researchers to determine which methods are effective in reducing oxygen levels.

In this way, the manufacturing steps can be increased to further reduce the oxygen content of the steel.

After Wan Yiming answered the phone, he checked the content sent by Wang Hao, and then he found Peng Hui and talked about what Wang Hao explained and the analysis results.

"Academician Wang said that the deviation of the results is too small, and even if the process is improved in this way, it will not have much effect."

"In addition, Academician Wang also said that let's send a special team to discuss the manufacturing problem with him." Wan Yiming said very seriously.

Peng Hui was a little regretful when he heard this, "I originally expected Academician Wang to help, but it seems that this research is indeed too difficult."

"Since Academician Wang asked for it, you can let Gui Fang go, plus Lou Jianping, and let the two of them lead the team."

"Let's take a look at the results given by Academician Wang, he said that the effect is not great, but it is not ineffective, and it must be good to be able to improve."

He shook his head as he spoke.

Peng Hui didn't believe in Wang Hao's ability, but he believed it very much, so he would have such a statement.

Since Wang Hao said that the deviation value is too small, it is estimated that there is not much effect, and it is estimated that it can be ignored, and it must not have much effect.

But anyway, as long as there is

A little effect has progressed, too.

Anyway, he decided to experiment right away. Their research is not to make a new steel, but to take a special steel with an oxygen content of 20pp and reduce its oxygen content in some way.

Generally, the minimum can be reduced to 5 pp right, because there are errors and deviations in the experimental process, and sometimes it will be higher, reaching 6 pp and 7 pp

Even though the experimental manufacturing process is very rigorous, they never reduce the oxygen content of the steel to less than 5pp program.

On the other hand, Peng Hui also sent Shi Guifang and Lou Jianping to lead a team to Xihai University.

The new experiment took a total of two days, and they strictly followed the data listed by Wang Hao to improve the process and process, and the new steel was sent to the testing room after it cooled.

Peng Hui, Wan Yiming and others did not have much hope.

After being sent to the testing room just now, they returned to the office to wait for the results, and while caring about Shi Guifang and the others, they asked if they had seen Wang Hao.

At this time, Shi Guifang and the others were already waiting in the small conference room of the Mason Number Laboratory, and received a call from Peng Hui, so they simply reported it.

Then I heard an exclamation from the other side, "Director Peng! Professor Wan! There are results!"

"The results are in!"

Peng Hui was on the phone and was frightened, so he put down the phone and hurriedly walked out of the office.

When I got to the door, I saw that Professor Zeng in the testing room was excitedly saying, "4pp4pp"

"We contacted for three tests and confirmed the result, and the oxygen content was around 4pp!"

"I can't believe it, it's 4pp all at once."

"We've got the results of your research!"

The others excitedly said, "Really? There is 4pp."

"So low?"

"Really? Is the study done? Directly reached the reservation target......"

"That's awesome!"

Peng Hui was directly stunned in place, and he reacted like everyone else, he also grabbed Professor Zeng and asked repeatedly, "Are you sure it's 4pp?"

"Of course!"

Professor Tsang was very excited, "I didn't believe it at first, but then I did two more tests to confirm the data."

"To be exact, the deviation value of 4.1pp is not more than 0.2pp."

"This has achieved the desired goal!"

"I can't believe it~~"

Peng Hui also couldn't believe it, so he pulled Wan Yiming into the office.

"Bang! ＂

The door was slammed shut.

Peng Hui immediately couldn't help but ask, "Didn't Academician Wang say that the effect was not good? How can you just get 4pp? ＂

"I don't know." Wan Yiming's mind was also a little foggy, "That's what Academician Wang told me."

"Could it be that Academician Wang misjudged?"

"Probably......

"Forget it!"

Peng Hui didn't think much about it, he picked up the phone directly, found the number and called Wang Hao.

It was Chen Mengmeng who answered the phone.

Chen Mengmeng is Wang Hao's assistant, Wang Hao's personal phone call is confidential, and the general call is first received by the assistant and then transferred to the past.

Chen Mengmeng heard that it was Peng Hui on the other side, who was the metal laboratory of Xijing Jiaotong University, and knew what was the matter with the call, so he directly transferred the call.

At this time, Wang Hao had just walked into the conference room and met Shi Guifang and Lou Jianping.

Shi Guifang is an old acquaintance.

Lou Jianping had only met him once, and he had said a few words briefly, but he was also an acquaintance, they had just met and exchanged a few words, and they were about to get straight to the point, when the phone suddenly called.

Wang Hao clicked the answer button, and he heard Peng Hui's excited voice on the other side, "Is it Academician Wang?"

"Yes, Professor Peng, hello."

"Academician Wang! Academician Wang! Thank you so much, we have just improved the process according to your analysis, and the oxygen content of the special steel has been reduced to 4.1pp, which has reached the expected goal!"

Peng Hui thought that Wang Hao would also be very excited, but he heard a somewhat regretful tone on the other side, "It's only 4.1?"

"Just?

Wang Hao sighed, "I knew it didn't have any effect, but it was only 4.1...... At most, we should catch up with the international level." He let out a long sigh after he finished speaking, obviously not very satisfied with the result.

Peng Hui was puzzled, "What is your expectation, Academician Wang?"

"I originally thought that it could reach 4, or 3.9, and then carry out the next step of improvement, it is best to reduce it to 3pp right, so that the bearing steel produced can catch up with the international advanced level, and now it seems that it is still a little worse than expected!"

Wang Hao was really disappointed.

Although the oxygen content of the world's most advanced level bearing steel is also in the right 4pp, it is necessary to consider one point--

They also have the world's top level in other manufacturing processes of bearing steel and bearing technology.

It's different at home!

Even if the bearing steel manufactured has reached the international advanced level, because there is a gap in other manufacturing processes and bearing manufacturing technology, it is naturally difficult for the bearings manufactured to reach the international advanced level.

"If the oxygen content of the steel can be reduced to less than 3pp, first of all, the bearing steel has exceeded the international advanced level."

"In this way, even if the technology of other parts is poor, with the best material support, the bearing steel produced may not be worse than the most advanced international level, and it can support the use of anti-gravity aircraft......

That's what Wang Hao thinks.

In fact, it is the same as cooking as a chef, using more fresh ingredients, and only simple dishes are needed, and the resulting food will be delicious.

If the ingredients are the same as others, and others have superb cooking skills, it is natural that other people's cooking will be more delicious.

Opposite side.

Peng Hui put down the phone in a daze, he finally fully understood.

No wonder Wang Hao said that the effect was not very good, but they conducted experiments and directly achieved the expected goal.

It turned out that the goal was different!

Wang Hao's goal is to produce steel with an oxygen content of 3pp, so he naturally can't look at the '4pp data, and feels that the data analysis results are not satisfactory, and the effect after improvement is not large.

Peng Hui smiled bitterly at Wan Yiming, "I can only say that the understanding is different...... We're still too small!"

Wan Yiming also smiled bitterly.

They took '4pp right, as the ultimate goal', and the result was changed to Wang Hao's hands, and the experimental data was directly achieved after analyzing it.

The pattern of the two sides is indeed not at the same level.

However, 3pp

Is it possible?

This number feels too high to be true.

When the oxygen content of steel is reduced to less than 10pp, the research difficulty increases exponentially with each increase, and the improvement of steel is also exponential.

The high-end bearing steel produced by Wuhan Iron and Steel with an oxygen content of 5pp6pp is not competitive at all in the international high-end bearing steel market, because the oxygen content of high-end bearing steel is under 5pp.

The former can only manufacture high-end ordinary bearings.

The latter can be used to manufacture state-of-the-art bearings.

3pp

What's that concept?

Peng Hui and Wan Yiming thought carefully and found that they didn't even have a concept in their heads......