Smart Industrial Empire

The high-temperature furnace project must be carried out by Jiuyi Heavy Industry.

This project is related to many things, especially the powder metallurgy industry that is gradually emerging now. It must also have the most important large tungsten crucible for sapphire smelting. It must also be fired at a high temperature of more than 2250° for at least 48 hours before it can be used.Nuclear industry, raw materials in electronics industry and machining tools etc. have a great demand for tungsten and molybdenum products...

In fact, the core of the high-temperature furnace project is the large tungsten dry pot project.

Tungsten is a non-ferrous metal with high hardness and high density. China's reserves and output rank among the top in the world.In the early [-]th century, the prosperity of Guangxi warlords was due to the export of tungsten ore.Even many years after the founding of the People's Republic of China, China itself was unable to produce tungsten powder and could only export tungsten ore.

This thing was used in the military for a long time, and it was the main component of metal cutting tools for civilian use. After entering the 21st century, with the accumulation of technology research in China, various tungsten products began to be mass-produced. , exported to many countries in the world.Among them, the large tungsten crucible used to smelt sapphire and single crystal silicon is the most typical representative.

When the gun barrel is smelted, a certain percentage of tungsten powder is added to the molten steel to improve the wear resistance of the gun barrel, thereby increasing the service life of the gun.

The melting point of tungsten exceeds 3300 degrees. To make a crucible that can withstand such a high temperature is basically more difficult than reaching the sky with the existing technology in the world.Therefore, powder metallurgy, that is, metal sintering, can only be used to process various tungsten products.

In powder metallurgy, a vacuum high-temperature furnace is generally used, and the maximum temperature can reach a temperature of 2700 degrees in the furnace, and the large tungsten crucible with a purity greater than 99.95% is used to load parts and products.

China is a big country producing tungsten, and it has already ranked first in the world in the early 21st century, far higher than the United States, which is second, and Russia, which is third.

The price of a high-temperature vacuum sintering furnace with an inner diameter of 800mm is more than 200 million yuan, and the value of the large tungsten crucible inside alone is more than 120 million yuan.

High temperature furnace.The most difficult part of the group lies in the manufacture of the Dawu Crucible.

Yun Fei used to work in a state-owned enterprise. Although he was only at the grassroots level, he still has a good understanding of this industry. That is because a large part of their workshop products are tungsten and molybdenum products.

The production of large tungsten crucibles occupied a large proportion in their company before he left that world.When his company was developing the Dawu crucible project, he and a few masters were responsible for tackling key mechanical processing projects.

The production of Dawu crucible involves many processes from tungsten ore to the final product. The means to obtain very high-purity tungsten powder are all chemical reactions, and Yunfei is not very clear about the details.Although their company also did this at the time, but because of departmental relations and some confidentiality, he was not very clear about the process before the powder.

The powder is put into a special mold, and then manually compacted (this cannot be loaded with machinery, current technology, and equipment with a high degree of automation, the performance of the manufactured tungsten crucible cannot be compared with that of manual labor, and the service life is very short. , you can’t load too much powder each time. Generally, it is five to ten kilograms), put it into an isostatic pressure of 170 MPa and keep the pressure for more than half an hour, and then use a vertical lathe to make the shape. For the powder car process.

Powder car.It is very critical, because at this time, the workpiece will fall apart if it is subjected to a slightly larger external force.

After powder car, demoulding.The risk is very high. For a large dock crucible with a diameter of 330mm, the diameter of the powder blank exceeds 370mm (the shrinkage of powder metallurgy products is very large).The weight of the filled powder is more than [-] kg. When demoulding, the crucible powder is slowly pulled by the radial force of the rubber sleeve and the steel sleeve outside the powder blank by the gravity of the mold core itself weighing more than [-] kg. Take out the powder.If you don't pay attention, the powder will shatter.

After the powder car is sintered in a high-temperature furnace at a high temperature of 2250 degrees.

Finally, it is machined to obtain a large dock crucible.

Machining is also a difficult problem. Most of the components of general cutting tools are tungsten. That is to say, it is very difficult to process tungsten with tungsten.Of course, some people say that there are tools harder than tungsten, such as diamond blades, cubic boron nitride and the like.

For such a thought, Yun Fei could only smile.

Tungsten is a very wear-resistant and temperature-resistant material.Tools like diamond and cubic boron nitride are almost cut within the grain structure of the surface of the part. The processing of general materials is an artifact of the Yitian sword and Tulong knife level, but for ultra-difficult materials such as tungsten products, it is estimated that It is equivalent to chopping bones with a stone age bone knife or stone knife.

For the processing of large tungsten crucibles, the domestic cutting tools are quite good in rough turning.At that time, Yunfei and the others experimented with various knives, and finally selected the domestic knives of ys8, which not only have high cost, but also have good processing efficiency, and the cutting depth can reach 1-1.5mm per side, which requires a high level of technical skills for workers.

For finishing, you can only choose the ultra-fine powder alloy knives produced by Devils or the United States.A small 5mmx 5mm, 100mm length blade, excluding tax, costs 400 RMB!This is still a friendly price, and people who have no connections in Japan or the United States can't buy it at all.

Such artifacts cannot be found in the domestic market. If Yunfei’s company had not established a joint venture factory of tungsten and molybdenum products with Japan, they would not be able to compete with other domestic companies in terms of finishing.

For such a difficult project, the investment is not something that Jiuyi Heavy Industry can afford in a short period of time.

But this is related to the third generation of smart phones and some high-end digital products, and has a lot to do with the upgrading of chips. If you want to realize the manufacture of sapphire and monocrystalline silicon products in China in this era, even the largest Even if it is difficult, we have to do it.

Otherwise, once chip companies make all countries in the world feel pain, the most important silicon raw material will definitely be cut off by the United States under the control of the Jews.

Stretching out his own neck and letting others pinch him is absolutely unacceptable to the current Yunfei!

However, no matter how you look at it, this matter cannot be accomplished by a private company.Without the support of the state, without the investment of a large number of scientific research departments of the state, it would be a fool to let Yunfei do it himself.He definitely won't do it.

There are many domestic companies that produce tungsten and molybdenum products. At least, group companies like Xiamen Tungsten and China Minmetals have research institutes and manufacturing companies that specialize in this area of ​​materials.

It's a pity that they can only research tungsten wires that are not high-tech used to make lamp filaments, and produce not-so-advanced mechanical cutting tools, and even molybdenum wires for wire cutting in electrical processing. come out.

Before the 21st century, China's CNC cutting tools for precision machining were [-]% imported!

"Mr. Sun. I know what you two mean. However, Jiuyi Heavy Industry, a private company, cannot afford this project! We don't have specialized material researchers, and we don't have a dedicated material research laboratory. The shabby laboratory in the workshop is simply unable to support the research of nano-scale cubic boron nitride and its related supporting projects."

In order to continue to let the two old guys work hard for Jiuyi Heavy Industry, Yun Fei had to explain in detail.

"Xiaoyun, when we propose this project, we don't mean that Jiuyi Heavy Industry should bear the research funds for this project. As long as we establish the project, start this project in advance, and make certain progress, we can apply for project funds from the state... "This thing.Although Yun Fei made his face dull, Situ He Yun still didn't want to give up.

He also knows that it is too unfair for Yunfei to let Jiuyi Heavy Industry, which is already short of funds, bear the initial research funds for this project.

Wait until there is a certain result in the future.The state will certainly embrace it across the board, and possibly dominate the research effort, at that time.Unless Jiuyi Heavy Industry fully bears all the research funds, it is impossible to exclusively own that technology.

Judging from the understanding of Yunfei in the past few years, this young man seems to have an incredible and even fanatical attachment to exclusive ownership!

"Project approval? Mr. Yun, you are absolutely reliable in this matter? How many professionals can our company count in materials? Could it be that these people in our company can produce materials that the entire country has not produced? ?" Regarding Situ He Yun's ignorance, Yun Fei was really angry.

Now he is not afraid of offending this old guy anymore.

Take my private money and do things for the country, am I so selfless?

No!

I'm just a petty citizen!

"I remember that you are engaged in automatic control? You are a leader in electronic circuits, are you also in materials? It is not easy for Jiuyi Heavy Industry to make money. Now there are several projects in the laboratory waiting for funds to start construction!" The more Yun Fei said, the more impolite he became. At this moment, he still forgot that Situ Heyun, an academician who enjoys a special national allowance, only voluntarily helped Jiuyi Heavy Industry develop CNC machine tool technology.

"You..." Situ He Yun was so angry at Yun Fei's words that he couldn't speak.

"Mr. Situ, are you alright?" Mao Yadong, who was sitting not far from the door to record the content of the meeting, saw Situ He Yun clutching his chest and couldn't speak, hurried forward to help the old man caress his chest, and kept giving Yun Fei wink.

However, Yun Fei, who was about to continue talking, didn't see her hint. When Yun Fei saw that the old man was so angry, he was stunned for a moment.

In case the old man gets angry, it will not only be difficult for the company, but also for Yunfei.

"Old Wu, why are you standing there in a daze, quickly call the Aerospace Hospital and call an ambulance!" Yun Fei only froze for a second before going mad.

Shouldn't the old man's heart attack be pissed off!

If so, I will die!

The most important thing is, who will lead his own CNC machine tool research team after the old guy loses his head? (To be continued..)

ps: This chapter is late again, gourd must die!Despised the company's network, did not recover for two days.

Thank you for the generous gift of 10100 coins again from the Demon Dragon Warrior, and thank you for the gentle and painful reward.

Thanks to Fengzhimeng 2123, Molong Zhangui, and Liu Liutianxia for their monthly tickets.Half of the next chapter has been coded, and it is expected to come out around [-] o'clock, please forgive me!