"Xiao Liu, if you have a problem, don't complain, how do you know that Mr. Chu can't make a ten-ton and twenty-ton titanium alloy production line, did you do it. Pen × fun × Pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ”

When Director Zhu heard this, he was suddenly a little anxious and scolded sharply.

In fact, he also thought so in his heart, if he wanted to make a ten-ton or twenty-ton titanium alloy production line, how could it be so easy, but he had to think about it in his heart, and he couldn't say it.

This said, if Chu Hao can't develop it, put the basin on their heads, and say that it is precisely because their research institute does not cooperate that they can't develop it, then I'm afraid that since he started, these more than 20 people in the titanium alloy smelting equipment laboratory will be punished, and none of them will be able to escape.

The researcher's eyes were red and his mouth couldn't stop muttering, but because of Director Zhu's usual majesty, he didn't say anything.

But he still didn't give in, and looked at Chu Hao angrily.

But Chu Hao smiled slightly, and stopped Director Zhu, who still wanted to say something, "For the development of titanium alloy smelting equipment, I really haven't made any achievements, and it's normal for everyone to have questions, but I can talk about my research on titanium alloy smelting equipment." ”

Chu Hao was also a little helpless, he naturally knew what the young researcher in front of him thought, if he faced a person who was young, had no qualifications, and whose research direction was not in his field, he would not be comfortable in front of him.

But science is never transferred by human will.

Hearing this, Director Zhu was a little surprised, with Chu Hao's meaning, he already had some research results, otherwise how could he call it a gain.

Didn't care about Director Zhu and the others, Chu Hao walked directly to a vacuum self-consumable electrode condensation furnace that was being assembled, and patted the copper crucible inside, "For metallurgical casting equipment, the most important thing is the crucible, now on the market, including the United States, Dongwei and other developed countries are used copper crucibles, copper has the characteristics of easy casting, because its inert properties keep the titanium alloy from chemical reaction with other impurities, so that it is not polluted." ”

"This is crucial, titanium is a reactive metal, at 600 °C to 700 °C, oxygen will diffuse into titanium, when the oxygen content in titanium exceeds 0.25%, the elongation of titanium will be doubled, when the oxygen content in titanium exceeds 0.7%, it will lose its plastic deformation properties, that is, it can not be processed. At 800 °C, titanium will absorb nitrogen, nitrogen will make titanium brittle, as for 1100 °C, titanium will absorb carbon, when the carbon content exceeds 0.1%, there will also be a significant decrease in molding, so from the casting point of view, titanium is really not a good element. ”

"Although the copper crucible has a great advantage in smelting titanium alloy, but when the metal is melted, the copper crucible is affected by severe heat, severe cold, water pressure and other reasons, which often deforms the crucible, causing difficulties in shelling, and even scrapping, so the copper crucible technology in developed countries is mainly in the material of copper, as well as cooling. ”

"Western developed countries add other metals, including rare earths and other precious materials to the copper of the crucible, and then change the cooling device, on the basis of circulating water cooling, add refrigerants, and use freon, or even liquid nitrogen for cooling. ”

Everyone nodded, judging from Chu Hao's speech, there are still two brushes, if the characteristics of titanium smelting in front of it are still basic skills, whether it is the development of titanium alloy and the development of titanium alloy metallurgical equipment, it is necessary to have a very deep understanding.

However, the following speech on the copper crucible obviously has a deep understanding of titanium alloy metallurgical equipment, at least the most advanced international science and technology.

"But as we all know, because copper metals are softer and have a melting point, it is really difficult to improve their material properties, so I plan to abandon copper as the main material of the crucible and switch to graphite as the main material of the crucible!"

As soon as these words came out, it was like a stone stirring up a thousand waves, everyone's complexion changed, and they couldn't help but have a small meeting below.

What Chu Hao said is too outrageous!

Everyone understands the advantages and disadvantages of copper materials, but why domestic and foreign scientific research institutions and manufacturers are stubbornly using copper as the main material of the crucible is because of the above, titanium is too active, it is easy to mix with other elements, this mix, then the titanium raw materials of this furnace are basically scrapped.

And Chu Hao said that with other things, they can still understand, but with graphite, they really can't understand. Graphite crucibles

At this time, the young researcher surnamed Liu stood up and said with a sneer: "Mr. Chu, graphite has good thermal conductivity and high temperature resistance, and in the process of high temperature use, the thermal expansion coefficient is small, and it has certain anti-strain performance to rapid heating and quenching. It has strong corrosion resistance to acid and alkaline solutions and excellent chemical stability. ”

"But graphite is an allotrope of the element carbon, and it is a porous material, which will release a large amount of carbon at high temperatures, which will directly destroy the titanium in the furnace. ”

"What you said is right, it can be seen that there is a considerable understanding of graphite. ”

Chu Hao pressed down his hand, smiled at the corner of his mouth, and said praisefully.

As soon as he saw Chu Hao motioning for him to sit down, and as if the teacher was praising a student, the young researcher surnamed Liu almost spurted out a mouthful of blood.

It's so infuriating!

Shouldn't he be ashamed of his accusations and the truth revealed, hide his face and leave, how is this situation completely different from what he thought?

"The researcher has made the advantages and disadvantages of graphite materials very clear, but we should not be choked and eaten, and I will assert that graphite crucibles will be the main material for rare metal smelting equipment in the future. Chu Hao said categorically and undoubtedly.

Using graphite as the main material of the crucible has been verified in Chu Hao's previous life.

Before the advent of graphite crucibles, the largest titanium alloy equipment that could be made in the world was ten-ton titanium alloy equipment, but since the emergence of graphite crucibles, the maximum has reached sixty-ton titanium alloy equipment.

It can be said that the emergence of graphite crucibles is an epoch-making invention.

"So Mr. Chu, is preparing how to solve the shortcomings of graphite crucible, porosity, and carburizing. Director Zhu asked with a somewhat solemn expression.

As a leader in the development of titanium alloy metallurgical equipment, Director Zhu even thought of replacing copper crucibles with other metals, but there are all kinds of shortcomings, and it can even be said that these shortcomings are much more serious than the shortcomings of copper crucibles.