After calming down his excitement for the time being, Ma Tian looked at this paper of the system reward:

The principle of laser processing is based on the interaction of light with matter. Generally speaking, a laser is a beam of light with a high degree of focus and high energy density, and when the laser beam hits the surface of the material, it causes the light effect of the material......

However, we have found a new kind of optical frequency wave, which can control its temperature and characteristics between 1nm and 9nm with special alloy materials, so as to avoid the light effect of the material, and then achieve high-precision processing......

After reading the abstract, Ma Tian came back to his senses from the system, and in short, this paper mentions a new light wave technology, which can be combined with special materials to form a high-precision processing laser to engrave materials.

How to achieve it, Ma Tian estimates that he will have to study for a while, because of the conditions for generating this light frequency wave, his current knowledge can also see a little something, which is definitely not simple.

Now there is another important choice in front of Ma Tian, that is, which discipline to add to Lv4 with 10 million influence points.

You must know that Lv3 is so strong, Ma Tian has a hunch that Lv4's knowledge has surpassed the current earth civilization.

Ma Tian's first thought was to add mathematics, after all, mathematics is the key to all science, but he also wanted to add physics, because physics depicts a complete picture of the material world and is the most important tool for understanding the objective laws of this world.

After struggling for a long time, and afraid that adding the system to Lv4 would bring some immutable factors, Ma Tian temporarily put the system aside, came out of the laboratory and began to walk towards the car factory, he still remembered that Shanyi Heavy Industry would drive an excavator to visit today.

When Ma Tian arrived, he found that Su Xiwen and a group of people were discussing it.

"Mr. Ma!" Seeing Ma Tian, the engineers of Tianyu Xinghai hurriedly stopped to say hello.

The engineers of Shanyi Heavy Industry also couldn't help but look at Ma Tian, they also saw the legendary Ma Tian for the first time in reality, saying that no emotion is fake, and a group of people also have different thoughts.

"Mr. Ma!" Zhong Yongtao, the leader of Shanyi Heavy Industry, also hurriedly greeted and did not dare to slack off.

Ma Tian nodded, showed a smile in response, came to Su Xihua's side, looked at the excavator next to him, and said, "Tell me about the situation!" ”

"Okay, Mr. Ma. The current situation is that Yamaichi Heavy Industry thinks that the engine of the island country they bought is not good, and wants to replace it with the electric engine in our car......" Su Xihua briefly introduced the situation.

Ma Tian was also expressionless after hearing this, and said: "That doesn't seem difficult, the most you can do is to adapt the hydraulic system, and we need to modify our electric engine to be suitable for excavators." ”

"Exactly!" Su Xihua nodded, this is indeed simple, Ma Tian suddenly saw the key, and he was not surprised at all.

Zhong Yongtao, Hou Chengzhi and the others next to them were silent, how could the questions they thought were difficult to be said so simply in front of Ma Tian.

In order to earn back a little face, Zhong Yongtao also said: "Mr. Ma, maybe we should also pay attention to the efficiency of work, we don't know what the situation is here, the mechanical efficiency of engine transmission is only 30%, far lower than the expected 45%. ”

"Is there a structure diagram? Give me the structure diagram! Hearing this, Ma Tian said to Zhong Yongtao.

"Yes!" Zhong Yongtao hurriedly took out the structural diagram from his briefcase, although he didn't know what Ma Tian meant by "calculate", but he still did it.

I saw Ma Tian take the structural diagram handed over and take a few glances.

Just as the blackboard at the scene began to be calculated with chalk, a large number of incomprehensible mathematical formulas were listed by Ma Tian one by one:

Pt＝σbc Pn＝ψPt

Pt＝σ×b×c＝σ q／L

……

Then Ma Tian paused from time to time, wrote the mental arithmetic answer on the blackboard, continued to calculate, and occasionally asked Zhong Yongtao some key parameters:

"How much work does your engine do? What about torque? ”

"Work at 160 hp and torque up to 1800Nm!"

……

15 minutes later, Ma Tian looked at the answer he calculated, and couldn't help but ask: "You are 260 series, the bucket capacity is 1.3 square meters, according to the working parameters of your engine, the actual fuel consumption in one hour is 16-20 liters, and now you are 22-24 liters?" ”

"Yes!" Zhong Yongtao's eyes lit up all of a sudden, could Ma Tian have calculated their fuel consumption? Something!

Hou Chengzhi in the back, the engineers of Shanyi Heavy Industry also widened their eyes in surprise, looking at the calculation formula that they couldn't read on the blackboard, and then looked at Ma Tian in contemplation, and really didn't understand how Ma Tian could calculate it.

Ma Tian didn't answer carefully, but asked Su Xihua, "Didn't Ye Yuyan come to the scene?" Let her bring her computer and build a mold! ”

Ye Yuyan is a modeling talent discovered by Ma Tian, and she is still a woman. She was originally a painting major, but then she didn't know which tendon was wrong and started drawing with a computer, and finally learned engineering to run to model.

Its modeling level is very high, and it is the existence of Tianyu Xinghai ranked first except for Ma Tianxia.

For an item, she can quickly hand-draw and model it, and if there are more detailed parameters, she can reproduce the model one-to-one.

"Okay, Mr. Ma!" Su Xihua began to contact Ye Yuyan by phone.

About 15 minutes later, a cute girl with big black-framed glasses, black straight hair, a big schoolbag on her back, and a big wooden board on her chest came to the workshop, it was Ye Yuyan!

"Mr. Ma!" Ye Yuyan said hello to Ma Tian.

The engineers of Shanyi Heavy Industry have never seen Ye Yuyan in real person, and they are also a little confused, how do you look at it, it doesn't look like a modeler?

"Hmm. I came to you today to cooperate with me to model and analyze this excavator! Ma Tian responded simply.

Su Xihua was already sensible enough to send someone to move the table and stool.

I saw Ye Yuyan take out the computer from the big schoolbag behind her and put it on the table, and then unhurriedly began to build a drawing board on the side, watching the excavator start to draw the structure by hand.

Ma Tian also kept speaking on the side: "The first section of the mechanical arm structure, this angle is 30 ° upward, and the length should be able to be visually detected!" ”

"1.6 meters!" Ye Yuyan glanced at the first section of the robotic arm and immediately gave the answer.

Hou Chengzhi on the side was stunned, because it was indeed 1.6 meters long, good guy, human eye measuring instrument?

"Here is a boom oil rod, looking at the design drawing, it is 1.2 meters, and the oblique upward angle is about 78 degrees, although I think 78 degrees is unreasonable!"

"It's a boom and a rotating center joint."

……

Ma Tian and Ye Yuyan cooperated, Ma Tian said, Ye Yuyan quickly drew one on the sketch board, and its drawing was fast and accurate, which was also an eye-opener for the engineers on the other side, this painting is too standard!

Obviously, Ye Yuyan is also very proficient in these mechanical structures, which is simply amazing.

Zhong Yongtao and Hou Chengzhi glanced at each other, and they both saw the shock in each other's eyes.

No wonder Tianyu Xinghai's R&D ability is so strong, not only Ma Tian is powerful, but the other employees inside are estimated to be Crouching Tiger, Hidden Dragon!

Not to mention Su Xihua, who won the National Bicycle Design Competition, this Ye Yuyan is also a master they didn't expect.

Ma Tian and Ye Yuyan were still cooperating, and soon after, the 260 excavator driven by Shanyi Heavy Industry was drawn on Ye Yuyan's drawing board.

And there are also annotation lines and auxiliary lines that label each parameter.

Then Ye Yuyan began to turn on the computer and started modeling with UG tools, typing on the keyboard with his hands at a fast speed.

Ma Tian also stood next to him, watching the modeling details start to deduce with a draft.

Others stood aside and didn't dare to disturb, although they couldn't understand it, but they didn't know it.

After another half an hour, Ma Tian looked at the draft in his hand, and also came directly to the boom of the excavator, pointed to the location of a telescopic spring and said: "If I don't miscalculate, the biggest problem you have at the moment is at this spring!" ”

Ma Tian's face was not good-looking, because he found that the entire excavator structure design was particularly problematic, and when he was calculating, the more he calculated, the more awkward it became, just like forcibly holding back the smell of shoveling.

For example, he found that there was a problem with the design of the stick cylinder, which was too long, and the top coupling was not good, so he had to endure the awkwardness and continue to calculate.

"Is there a problem with this telescopic spring?" Zhong Yongtao walked forward and looked at the position pointed by Ma Tian, his face was serious.

"It's the biggest problem!" Ma Tian disliked it.

"What do you mean?"

"Do you want to hear the truth or lie!" Ma Tian looked at Zhong Yongtao and said in a flat tone.

"Mr. Ma, of course I want to hear the truth!" Zhong Yongtao looked at Ma Tian, he didn't know what was going on, and his heart was also hanging.

"Oh, and the truth is, your entire excavator design structure seems to me to be problematic!" Ma Tian said truthfully.

"Ahh

Zhong Yongtao and the engineers of Shanyi Heavy Industry were stupid when they heard this.

I wanted to refute unconvinced, but in the face of Ma Tian, they didn't know where to speak.

"Poof~" Ye Yuyan couldn't hold back her laughter, looked at everyone looking at her, and hurriedly covered it with her hands, pretending not to laugh.

She and Su Xihua, who are familiar with Ma Tian, both know that this is Ma Tian who saw that Shanyi Heavy Industry was from other companies and gave some face.

If this was designed by them, Ma Tian would never hesitate to scold them for "what kind of garbage designed".

"Mr. Ma, please advise me again!" Zhong Yongtao's face was a little red, but he still put down his face and humbly asked for advice.

"Let's change this spring first, change it to 18 cm, the original 20 cm elasticity is problematic!" Ma Tian did not point out other problems, but asked Shanyi Heavy Industry to change the spring first.

Because he can also see from the expressions of the engineers of Shanyi Heavy Industry that they don't believe that their excavators are all over the body, so it's better to use this spring to prove it first!

"Okay, Mr. Ma!" Zhong Yongtao suppressed the doubts in his heart and did so.

However, this spring is also imported, and now it will definitely not be replaced, and it needs to be customized like a foreign company, he said: "Mr. Ma, this spring may need to be replaced after a while, and we can't do it so well in China at present!" ”

"Who said that? We can do it in Tianyu Xinghai! Ma Tian said that the simple high-precision processes of springs must have been broken by him a long time ago, but he just felt that it was too simple and did not announce it to the public.

Unexpectedly, just a high-precision spring, in addition to him, China is also so backward abroad, which Ma Tian did not expect.

"Can Tianyu Xinghai make this spring?" Zhong Yongtao repeated.

Ma Tian nodded, and motioned to Su Xihua to arrange for someone to make it directly on the spot, but he didn't think that his own Tianyu Xinghai was so good, but he felt that there was still a long way to go in China.

Su Xihua led people down to make it, and Zhong Yongtao looked at the calm Ma Tian and had mixed feelings in his heart.

At this moment, he felt like a bun that had just entered the city, watching the various operations developed by Tianyu Xinghai.

It turns out that unconsciously, the manufacturing technology of other domestic companies is already so strong? Or are they too far behind?

This reminded him of the time when he visited the manufacturing workshop of Mitsubishi Corporation headquarters in the island country five years ago, and he also had the feeling of entering the city with dirt buns.

"Technology, it has to be technology! If a company does not have its own technology and continuous research and development, it will never be able to raise its head! Zhong Yongtao's heart was roaring like a turbulent wave.

He decided that when he returned to Shanyi Heavy Industry, he must persuade the senior management to increase investment in research and development, and it will only be difficult to move an inch if he relies on foreign companies!

More than an hour later, Su Xihua came over with a spring that had just been cooled and manufactured.

Engineers from Yamaichi Heavy Industries cooperated with Tianyu Xinghai's machine to replace the spring at the excavation arm on the spot.

After replacing it and filling up the fuel tank, Hou Chengzhi climbed into the cab of the excavator and started the engine to start the test.

The sound of the engine roaring began to explode in the workshop, Zhong Yongtao's eyes stared at the consumption of the fuel tank without blinking, and his ears were also listening to the sound of the overall work of the excavator.

After 10 minutes, looking at the fuel capacity consumed by the fuel tank, Zhong Yongtao and his own engineers were shocked, and the oil consumption in the fuel tank was about 2.7 liters.

The problem is really in this spring! According to the original spring design, the fuel consumption at this time should be about 3 liters.

"Sure enough, there is a problem with this spring, and the Datong company of the dog day deliberately sold us an inappropriate size!"

"Mr. Ma is really powerful, how do you see this?"

……

The engineers of Yamaichi Heavy Industries have fried the pot!

Hou Chengzhi also hurriedly jumped out of the cockpit and asked, "How is it?" Has fuel consumption been reduced? ”

"Yes, fuel consumption has been reduced by about 0.3L!"

Hou Chengzhi was silent, Ma Tian was really right, the problem that had plagued them for a long time was suddenly seen by Ma Tian.

How exactly did Ma Tian do it? Is this the strength of top mathematicians?

Zhong Yongtao also recovered from the shock of learning the test results, came to Ma Tian and said: "Mr. Ma, you are right, there is indeed a problem with the spring!" ”

"Leave the excavator behind, I will improve it for you on this basis, your overall excavator has a big problem!" Ma Tian looked at Zhong Yongtao and said in a tone that could not be ignored.

His strength has been proven, so let's let Yamaichi Heavy Industry see what a real excavator is!

"Okay, Mr. Ma!" Zhong Yongtao agreed without thinking about it, they Shanyi Heavy Industry had no reason to refuse!

……

(End of chapter)