The car giant started by marrying the daughter of the king

Chapter 178: A fierce operation, a new plan is released
The discussion between Zuo Guangsheng and Ji Hua ultimately did not produce any results.

It would be unreal if the problem that has plagued Shougang for so many years could be solved after a simple discussion.

In the end, Ji Hua left Shougang a little depressed.

"Old Ji, we should take the initiative in this matter."

"Wasn't the 4MT designed by Assistant Jiang of the Capital Automobile Factory?"

"He was able to design such a complex gearbox at such a young age, which shows that his skills are very strong. I think you should look for him again to see if he has any additional solutions?"

Ji Hua had mentioned the impact of the incident before, so Li Nanhai is now very positive about actively improving the problems encountered in the sample testing of the Hummer project.

This concerns the future of the Capital Gear Factory.

"It's definitely okay to try to communicate, but the fact that Assistant Jiang was able to design 4MT is already an extraordinary talent, and it has brought a huge surprise to everyone."

"If we need to re-adjust the gearbox design, he can definitely give us a lot of advice."

"But this time the problem is with the bearing steel, so the amount of help he can provide may be limited."

Ji Hua felt it necessary to lower Li Nanhai's expectations, otherwise people would think that he and Jiang Hui were not working hard enough.

It is very common in real life that people are grateful for every grain of rice and then resentful for every grain of rice.

“That’s not necessarily true. Wasn’t it only after Jiang Hui’s deep involvement that Shougang finally solved the problem of high-strength automotive steel plates that it had been unable to obtain before?”

Although the biggest beneficiary of high-strength automotive steel plates is Professor Zou Yuan of the Capital Iron and Steel Institute, Jiang Hui, the well digger, is also very well-known in the industry.

As the director of the Capital Gear Factory, Li Nanhai was naturally well-informed.

He is well aware of everything that happens in the automotive industry.

"That's true. Assistant Jiang has done in-depth research on high-strength automotive steel plates, so it seems reasonable that he knows some bearing steel-related technologies."

"After all, they all fall within the research scope of the Department of Iron and Steel Metallurgy."

Originally, Ji Hua didn't have much expectation of going to Jiang Hui for advice, but after chatting with Li Nanhai, his interest was piqued.

If the technical problems with bearing steel can be solved quickly, the Capital Gear Factory will definitely benefit greatly.

The performance of their gearboxes can even be improved to a higher level.

"Put aside the things in the factory for now. The most urgent thing is to find Jiang Hui and have a good talk with him."

After Li Nanhai said this, Ji Hua didn't plan to stay in the factory any longer and hurried to the Capital Automobile Manufacturing Plant to find Jiang Hui.

Fortunately, the two factories were very close, and Ji Hua soon appeared in Jiang Hui's office.

It was quite a coincidence that he came here. Jiang Hui was busy writing some materials related to the improvement of bearing steel technology.

It's totally fine if Ji Hua wants to communicate.

"In response to the problem that Shougang's existing bearing steel cannot meet the requirements of the Hummer project, Capital Institute of Technology is preparing to work with Capital Iron and Steel Institute, Shougang and your factory to set up a multi-department joint research team to improve the material ratio of the bearing steel and some processing parameters, and also adjust the heat treatment process of the bearings."

“The result is improved bearing performance to meet the requirements of the Hummer program.”

As this matter progresses, there is definitely no way to kick out the Capital Gear Factory.

After all, the current 4MT is produced by them, and it would be a waste of time to build a new gearbox factory.

In this case, Jiang Hui simply didn't keep the secret any longer, but instead discussed his next idea with Ji Hua.

After hearing what Jiang Hui said, Ji Hua suddenly became much more excited.

He had also looked for Jiang Hui before, and the two were quite familiar with each other.

Now Jiang Hui can solve their troubles at the critical moment, which is definitely a great help.

"Our factory will definitely fully cooperate with the project team's various work arrangements. If there is anything you need our factory to do, Assistant Jiang, just give me a call."

If someone else said the same thing, Ji Hua would definitely not think that the other person would be able to handle the bearing steel issue.

But since it was Jiang Hui who said this, he felt very confident.

In his opinion, if Jiang Hui couldn't handle this matter, then no one in China would be able to handle it in a short period of time.

Even experts like Shougang's chief engineer Zuo Guangsheng were at a loss, and the situation of technical personnel at other steel mills was not much better.

"There will be some issues that require your cooperation as soon as possible, especially the improvement of the bearing heat treatment process, which needs to be completed by your factory."

“Does the heat treatment process for bearings also need to be modified?”

After hearing what Jiang Hui said, Ji Hua immediately thought of the scene when he had an argument with Zuo Guangsheng of Shougang.

I think it is a problem with the bearing steel, while the other party thinks it is a problem with the bearing heat treatment.

Although the meeting did not end in a bad mood, the atmosphere was far from harmonious.

Now from what Jiang Hui said, this matter may really be related to two factors.

The performance of bearing steel needs to be improved, and the heat treatment process of bearings also needs to be improved.

"Yes, there is still a big gap between domestic bearing steel technology and the advanced level abroad. It is still very difficult to improve a lot in a short period of time. We can only improve a small part first and then continue to improve slowly in the future."

“The remaining performance improvements can only be achieved through the heat treatment process of the bearings.”

After Jiang Hui said this, Ji Hua did not refute anything.

After all, theoretically speaking, there is nothing wrong with this plan.

Before seeing the specific content of the plan, he couldn't say much and could only say that he would fully cooperate.

……

"Theoretically, it is completely feasible to change the ratio of these alloy elements."

"But I still have some questions, such as why the chromium content is set at 1.3% to 1.65%?"

After Jiang Hui sorted out the information, he went to see Zou Yuan with Zhu Jiansheng to communicate.

In this regard, Zou Yuan is definitely a professional.

"Chromium mainly plays a role in improving the strength and hardness of steel, improving the high-temperature mechanical properties of steel, improving the corrosion resistance and oxidation resistance of steel, preventing the graphitization of carbon in steel, and improving hardenability."

"However, too high a content will significantly increase the brittle transition temperature of the steel and promote the temper brittleness of the steel."

"So its content needs to be controlled within a certain range. The current data is calculated by me based on various materials. The final effect still needs to be verified with Shougang."

Jiang Hui knew that Zou Yuan would definitely have all kinds of questions. After all, the data in the information he compiled appeared very abrupt.

Normally, the chemical composition data of these materials are finally determined through various tests.

But everyone knows that Jiang Hui cannot possibly conduct actual material testing. He simply does not have the conditions to do so. "Then why is the manganese content set at 0.2% to 0.4%?"

What Jiang Hui said was completely logical, so Zou Yuan did not continue to dwell on it, but continued to confirm other information.

"Manganese is a good deoxidizer and desulfurizer in the steelmaking process. It can improve the strength and hardness of steel, improve the hardenability of steel, and improve the hot working performance of steel. However, an increase in the amount of manganese will reduce the corrosion resistance and welding performance of steel."

"I also calculated a range based on some past data, and ultimately it needs to be verified through experiments."

"As for silicon, it acts as a reducing agent and deoxidizer in the steelmaking process, which can significantly increase the elastic limit, yield point and tensile strength of steel."

"Silicon combined with molybdenum, tungsten, chromium, etc. has the effect of improving corrosion resistance and oxidation resistance, but the increase in silicon content will reduce the welding performance of steel."

Jiang Hui knew that Zou Yuan would definitely continue to ask about the reasons for setting the ratios of other chemical components, so he simply started to explain it himself.

"The molybdenum content is controlled between 0.10% and 0.20%, which helps to improve the strength and wear resistance of the alloy..."

After introducing several main components in one breath, Zou Yuan had a deeper understanding of Jiang Hui's theoretical knowledge of steel.

"From the current situation, the performance of this grade of bearing steel may be improved, but the specific details still need to be communicated with Shougang as soon as possible to arrange the production of samples and then conduct testing and confirmation."

Zou Yuan thought about it for a while and gave his opinion.

“I would expect that this bearing steel, after proper heat treatment, will have excellent hardness and provide excellent wear and fatigue resistance.”

“It also has good heat treatment plasticity and moderate cold working plasticity, and can obtain ideal organization and properties through appropriate heat treatment process.”

"These performance improvements will allow Capital Gear to further improve the performance of bearings by improving the heat treatment process during the bearing processing, ultimately meeting our design requirements."

Jiang Hui further supplemented the performance prediction of the bearing steel he had provided.

He had previously told the Capital Gear Factory that this time the technical improvements would be made from both the bearing steel and the heat treatment of the bearings to ultimately achieve the goal.

"If this is the case, then it may be possible to meet our requirements in the end."

"Old Zhu, Xiao Jiang, why don't we just go to Shougang now?"

Zou Yuan was a little impatient to go over and finalize the next specific arrangements with Shougang.

Steel mills are all very large, and if they want to trial-produce some test steels, there are many things that need to be coordinated, and it cannot be done in a day or two.

Of course, it would be best if Shougang’s laboratory could handle part of the sample preparation work.

But Jiang Hui felt that the possibility was not very high.

The situation of steel is very different from that of other products. The smelting process of crude steel must be carried out in a blast furnace. At most, you can build a small-scale blast furnace to meet some special needs.

However, it is basically impossible to accomplish everything directly in the laboratory.

This is also an important reason why the steel industry is not something that a small country can easily master.

"Okay, let's go to Shougang and have a chat. They should be very interested in this plan."

Zhu Jiansheng naturally had no objection to Zou Yuan's proposal.

Soon, the group headed towards Shougang.

……

Many circles in China are actually very small.

There were some problems with the Hummer project hosted by the Capital Institute of Technology, and there was no way to keep this information completely confidential.

Second Automobile Works, which has been paying close attention to this project, knew about it at the first moment.

"Director Chen, the Hummer project is said to have been stalled due to major defects in the sample testing phase."

Han Hao knew that Chen Liangrong was very concerned about Hummer. After all, Second Automobile Works had spent a lot of effort to win this project.

But in the end, it didn't happen.

Even so, Second Automobile Works did not completely give up the project.

"Are there any major problems?"

After hearing what Han Hao said, Chen Liangrong immediately became interested, "What exactly is going on?"

If the Capital Institute of Technology cannot handle this project, then it seems completely reasonable for Second Automobile Works to once again propose to the First and Fifth Ministry of Machine Building to take over the project, right?
Chen Liangrong felt that things seemed to have taken a turn for the better.

"I heard that the bearings inside the two core components, the gearbox and transfer case, could not meet the design requirements because the bearing steel performance did not meet the requirements."

"It's probably not that easy to achieve a technological breakthrough in bearing steel in a short period of time."

"Shougang does not have much experience in special steels, so it will probably take more time to produce bearing steel that meets the requirements."

Han Hao quickly explained what he had learned.

Those who work in the automotive industry must have to deal with various types of steel.

Special steel is something that cannot be avoided.

Whether it is the engine and gearbox, or the chassis and other parts, a variety of special steels are used.

The performance requirements of these special steels vary.

Among them, the special steel on bearings, gears and other parts is a typical representative.

"Although the scale of the domestic steel industry is not small, the technological level is still far behind that of developed countries."

"It is indeed difficult to make a breakthrough in a short period of time."

"Let the Capital Institute of Technology hit a wall, and then we can take over this difficulty, and maybe it will become a natural thing."

"But we also need to communicate with some steel mills in advance to see if it is possible to solve this problem."

"Or have someone contact foreign bearing manufacturers or bearing steel manufacturers to see if it is possible to use imported bearings or bearing steel."

Chen Liangrong felt that Second Automobile Works could start considering some follow-up work.

chances are for people who are prepared.

Whether Second Automobile Works can successfully seize the Hummer project in the future is naturally closely related to the preparatory work they have done in advance.

"Then I'll try to get some drawings of these bearings first, otherwise it will be difficult to carry out some of the work."

After listening to Chen Liangrong's words, Han Hao was also ready to act quickly.

The production of those bearing samples has already begun, and the relevant units must have the drawings.

Han Hao felt that he could still get it if he tried hard.

(End of this chapter)