Ji Donglai noticed Wu Zhen's father's position column, the deputy director of the steel plant!

Obviously, it is the ability to make money and connections, Wu Zhen has been showing off his high scores these days, and Ji Donglai has flattened his mouth.

"I want to run for our league secretary, and everyone in our dormitory supports me!"

At the end of the military training, Ji Donglai also began to pack up his things, preparing to move some of his things to Wang Jue's shop, and work at Wang Jue's side at night.

The library here at the school is very good, you can borrow five books at a time, and Ji Donglai doesn't need to buy these tool books for mechanical design manuals, and borrows them directly from the small factory.

As for the inspection of materials, Ji Donglai was ready to find an opportunity to get acquainted with the teacher in the laboratory, and he regarded this side as half of his laboratory.

Ji Donglai was thinking about his hundred-year plan, and he didn't want Wu Zhen to say this, Ji Donglai did not object, but found that the bedroom was quiet, and he looked up to see that Wu Zhen was looking at himself.

"Yes! I'm going to vote for you!"

Looking at Wu Zhen's eyes, Ji Donglai was very bored, and secretly said that the child who was spoiled by his parents was even more determined to leave this dormitory.

"I'm going to run for the school committee, and the class president also supports me, let's help each other!"

Seeing the stitches on the other side of the field, Ji Donglai was speechless for a while, and his heart was really improvised, so he immediately said that he supported it, and let the other party get the rest by himself.

The military training graduation ceremony is the same thing in all schools, after dealing with the things here, Ji Donglai is busy preparing to go to Zhongguancun

Over there, Wu Zhen and Tian Ye's position settled and began to run unbridled.

"Brother Donglai will help me bring me a shampoo, and I'll give you money for seven yuan!"

Tian Ye and Wu Zhen were really studying the newly bought mobile phone, Ji Donglai agreed and didn't care, and directly pulled the things to Wang Jue's side, and then returned to the small factory.

"This is good, we happen to have a few tolerances here that need to be used, Donglai Brother is God!"

Ding Aixing and several people in the office were calculating the tolerance range of several matching parts, looking at the mechanical design manual that Ji Donglai got back, and his eyes suddenly lit up.

In the past few days, Tan Xiumei has been sending new products, and Ding Aixing and a few people are sharing pictures in addition to eating and sleeping.

The plumbing thing seems simple, but the details are definitely not simple.

On Friday, Ding Aixing almost scrapped an elbow, but fortunately, Sun Li's inspection found it in time, otherwise the tile would have been completely scrapped.

"Read more books in the future, you have a good foundation, you all have knowledge in your heads, but you haven't established a foundation, and you can understand it clearly in a few minutes when you build a foundation! Anything else that's been going on lately?"

There was a smell of sweat on Ding Aixing's nose, and Ji Donglai knew that a few people had been too busy recently, so he handed over the toiletries bought by Carrefour to a few people.

"There is a list, boss, Mr. Zhu's list of 10,000 units has come down, it's a bit big, we don't dare to call the shots, you can take a look!"

Ding Aixing took down a drawing from the shelf, which was also a drawing of a sliding shoe, but the difference was the all-welded mode adopted by this skeleton.

The mounting base is fifteen thick iron plates, and the standing base is five thick steel plates.

The dimensional tolerance range is a bit narrow, and it's a bit laborious to do it with stamping, but it's not profitable to do it with flame cutting.

As for laser cutting, it's even more of a joke.

Ji Donglai came to Tojeri last week to help him ask about the laser emitter has not yet been settled, once he can find these things, Ji Donglai does not mind looking for Zhang Yu to ask for a channel for the guide rail of the machine tool, and he will organize a laser cutting by himself.

"Huh? Have you checked this standard?"

After reading the drawings, Ji Donglai finally landed on the title bar, according to the habit of foreigners, the tolerances clearly stipulated on the drawings went according to the tolerance range.

If there is no clear tolerance range, follow the standard above the drawing, and 709 is the standard for hot-rolled plates.

Then the thickness of Ji Donglai's steel plate, 16 millimeters, can be made with 15.7.

In this way, the shear force of the steel plate is reduced by more than a little

Half a point, the material requirement is 699, which means that the material is not necessarily 235, as long as it is this group, it can be used.

Ding Aixing touched his head over there, hurriedly brought the manual that Ji Donglai brought back, and finally found 699 after a long time.

"Hey, Dad, you can help me see if there is a 08F or 20 steel plate in the warehouse, this can be a lot cheaper, I need some here, just hot rolling!"

dialed the phone number at home, and Ji Donglai hurriedly explained to Ji Ping.

Ji Ping hurriedly rode his family's bicycle to Yu Wei's warehouse, and there happened to be a No. 25 steel plate that had been opened, and 08F also had it! The price of several steel plates is much cheaper than that of 235.

"Okay...... Ai Xing, place an order for the boss! Sixteen mm 709 hot-rolled plate, three sheets of twelve meters! Three sheets of five millimeters!"

After determining the requirements of the drawings, Ji Dong came over there and began to quote.

As a small factory, Ji Donglai must be compared. At this stage, almost all the steel plates on Tan Xiumei's side are full-scale plates, and Ji Donglai is also ready to use hot-rolled plates to dry them in the next step.

After all, it's all money, and now the whole world is short of money.

"Ji Donglai, I have a drawing here, can you make it?"

Ji Donglai was thinking about how to save money, Tan Xiumei came in with a stack of A4 drawings, Ji Donglai knocked on Cui Mingyan's office, and Cui Mingyan hurriedly came out to make coffee for Tan Xiumei.

Liu Yupeng hurriedly ran out of the door, changing and tidying up his clothes as he walked, and the water cup in Ji Donglai's hand was almost thrown out.

"High-pressure pipes? It's a supercharger,! The price can't be low, I have to get on the plate bending machine, and this is high pressure!"

Looking at the tube with a diameter of half a meter, Ji Donglai directly turned on the computer, opened the three-dimensional software, and the computer fan began to roar in minutes. Ji Donglai directly used UG to start modeling according to the drawings, but not according to the pattern of the drawings, but cut the entire pipeline and assembled it little by little, which was completely restored to the construction site.

"It's so hard?"

Looking at Ji Donglai dividing the pipe into nine sections, Tan Xiumei looked at the drawings again, and then realized that she had simplified this thing.

"What do you think? This weld should be guaranteed for three years, and the technique is not absolutely good, and I dare not weld at all! I can't get the water pressure here, so I can't experiment! It's at least 5,000 yuan to buy a high-pressure pump, and it's hard to get all kinds of things on the test bench, can you find someone else to do this?"

Looking at the model of this drawing, Ji Donglai retreated in his heart.

The principle of the pipeline with seven pressurized tablets is the kind of turbocharging commonly used in automobiles, and the pressure of the front tube is too high.

The middle blades are also under a lot of pressure, and a little leakage is allowed when welding, but the outer skin must not leak.

The weld is required to be polished and smooth, and the concentricity of the pipeline is still required.