Qian Wenhua looked at Yu Aiguo with a look of hatred, this matter is very important, he actually thought of it now?
"Jumping up and down? Why are you jumping up and down?"
"I know Zhao Erwa, she is almost a first-class combat hero."
"What he hates most is monkeys. You actually said he looks like a monkey?"
Yu Aiguo smiled and said: "It's really like a monkey, doing front somersaults and backflips. Anyway, it's very neat."
"I'm still asking, why is he so powerful?"
"Now I know that it's not just him who is amazing, but the prosthetic leg he installed is really amazing."
With that said, Yu Aiguo pressed the spring steel plate under the prosthesis.
He pressed hard, but it didn't click.
"It's very elastic and hard," Lao Wang said immediately.
Cheng Daqi finally became smarter for a while. He rolled his eyes several times and asked, "Is this a special alloy?"
Lao Wang said: "It should be a kind of high carbon steel!"
Lao Wang is experienced and naturally knows the properties of high-quality high-carbon steel, but can such good high-carbon steel be refined in China?
In fact, carbon steel has been around for a long time, and even craftsmen during the Three Kingdoms period were already producing it.
They heated the pig iron to a liquid or semi-liquid state, and used methods such as blowing air or sprinkling in concentrate powder to oxidize silicon, manganese and carbon.
This reduces the carbon content to the composition range of steel and wrought iron.
The products of fried steel are mostly low carbon steel and wrought iron, but if controlled well, medium carbon steel and high carbon steel can also be obtained.
The Qin army's method of making this batch of steel was no better than that of the ancients.
But his quality control is not comparable to that of the ancients.
Coupled with his mature steel-making technology and unique formula, it is naturally not comparable to the high-carbon steel created by the ancients.
Not to mention the ancients, the mature formula he is using now, and the high-carbon steel he refines, even some powerful foreign steel-making countries should not be able to compare with him at this time.
After all, it is a technology that is more than 40 years ahead. Even after more than 40 years, this formula is still a secret.
He refined it according to the formula of high-performance spring steel.
Of course, since he didn't know the element content of the raw materials, he could only fumble around.
Even because of fear, its elasticity is not enough to support Zhao Erwa's activity intensity.
Therefore, he refined a batch of steel according to the highest hardness and toughness.
The high carbon steel refined in this way is definitely not comparable to some special steels of later generations.
But compared with the tool steel of this era, it really has advantages.
Such high carbon steel, after appropriate heat treatment or cold drawing hardening, has high strength and hardness, high elastic limit and fatigue limit.
Especially the notch fatigue limit is excellent.
The second is that the cutting performance of this high carbon steel is acceptable, but the welding performance and cold plastic deformation ability are poor.
However, what Qin Jun wants is strength, hardness and high fatigue.
However, when it was actually refined, he discovered that there was something wrong with this high-carbon steel!
Fortunately, this kind of special steel made from the best of the best has high hardness and a special alloy. An ordinary drill bit will definitely not be able to drill it.
"What should I do?" After knowing what high carbon steel was, everyone was a little dumbfounded.
"Can you find someone suitable?"
Yu Aiguo's mind was spinning quickly, and he looked at the disabled soldier who was doing the experiment.
His legs didn't fit properly, and the prosthetic limb couldn't be modified, so he had to replace it.
But, for a short time, where can I find the right person?
"How about we change the drill bit?" Lao Wang said at this time.
"Just change the drill bit?" Cheng Daqi asked.
Several people looked at each other. In fact, it was easiest to change people, but tonight there was no way to change them.
"Since you can't replace someone, let's replace it with a drill bit imported from abroad. I remember there is still one in the factory!" Lao Wang said immediately.
Cheng Daqi immediately said happily: "There are still foreign products? Why do you keep them? Take them out quickly and use them!"
Cheng Daqi is naturally happy to have a solution, but Qian Wenhua is not.
Because he knows very well that the biggest feature of imported things at this time is that they are expensive!
It doesn't matter if it's expensive. The most important thing is that even if you want to buy it at a high price, others may not sell it.
And even if you sell it, you won't be sold the best stuff, and you won't even be able to buy the second-tier stuff.
How can they endure it when they spend the most expensive price but can only buy some defective products?
"Hey!" Thinking of this, Qian Wenhua could only sigh: "Hurry up!"
Qian Wenhua agreed. Lao Wang was still very fast. After a while, he came back with a toolbox.
Seeing his cautious look, Qian Wenhua felt even more sad.
Everything needs to be imported from abroad, so when will the country develop?
However, when he thought about the development in recent years, Qian Wenhua relaxed his frown.
In recent years, domestic superhard tool materials have developed rapidly.
For example, many cemented carbides have been developed, and several other superhard tool materials have also been developed.
Such as high-purity alumina ceramics, metal composite ceramics, cubic boron nitride, artificial diamond, etc. have also made great progress.
These materials are used as cutting tools and have achieved significant results in solving the cutting problems of high hardness, high strength, and difficult-to-machine materials.
It has also gradually changed the situation of over-reliance on imports in these aspects in the past.
This is good, because as long as there is development, it will definitely get better and better in the future.
For example, now, they may have witnessed the emergence of an excellent alloy.
Thinking of this, Qian Wenhua showed a smile on his face.
Maybe the prosthetic leg that cannot be drilled tonight is a good thing?
You must know that tool steel is a widely used steel type in the machinery manufacturing industry, with many grades and high smelting quality requirements.
Before liberation, due to the poor metallurgical level, even ordinary steel relied on imports, and tool steel was certainly no exception.
Even now, it has only solved some processing problems of ordinary materials.
The processing of hard materials, high hardness materials, and ultra-high hardness materials now requires imported tool steel.
But it's all getting better and better.
Qian Wenhua looked at Lao Wang expectantly. There should be no problem this time, right? After all, the products used this time are foreign products.
Although he is not convinced, Qian Wenhua also knows that these things abroad are indeed much better than those at home.
"How much does such a drill cost?" Qian Wenhua couldn't help but ask.
"It costs sixteen yuan!" Lao Wang said while busy.
"How much? How dare you ask for a month's salary of an apprentice for such a small gadget?"
Although he knew that things imported from foreign countries were expensive, Qian Wenhua really didn't expect that such a thing with only one or two weight would dare to cost sixteen yuan?
How much does a pound of beef cost now? One dollar and eight.
In other words, such a small thing can be exchanged for almost nine pounds of beef!
"Old leader, at this price, not everyone can buy it."
Speaking of this, Lao Wang was actually a little proud.
Qian Wenhua smiled helplessly. The money he earned was really relaxing and comfortable.
In fact, drill bits are more expensive, but they cost US dollars.
The current exchange rate between U.S. dollars and RMB is 1.5 yuan per U.S. dollar.
In other words, such a small thing costs more than ten dollars!
Don't think that this dollar is not much, because the average salary in the 1980s was just over a thousand dollars.
In other words, one hundred small drill bits are equivalent to a month's salary of an Aramco worker.
Know that the average wage, definitely not the minimum wage, is the problem.
Qian Wenhua also knows how to settle accounts and understands Ami’s situation.
So he knew very well what it meant to convert five kilograms of tool steel into one hundred drill bits for one thousand dollars.
In fact, making money is nothing, the most important thing is their industrial strength and technology!
With technology, consumables such as drills can be sold at high prices, which can be said to be a huge profit!
After Lao Wang replaced it with a thin black drill bit, he started the electric drill again.
This time, Lao Wang was obviously more careful. Even when the drill bit touched the steel surface, he didn't seem to dare to use force.
I saw Lao Wang testing again and again, until he left traces on the piece of steel, then he became cruel and pressed hard.
The biggest fear when using an electric drill is displacement.
At this time, if the drill bit penetrates the steel and deflects in position, it will be easy to break the drill bit.
This little thing is worth sixteen yuan!
It's not easy to buy, so Lao Wang is naturally cautious when using it.
