On the second day, the content of the metalworking internship was changed to machining, turning, milling, planing, and grinding.
The most important thing is the use of lathes.
Milling workers are afraid of round milling, and lathes are afraid of turning rods. The school just assigned all interns the job of turning "rods": turning hammer handles.
Fortunately, the handle of the hammer is only 15 or 16 centimeters, so there is no need for a thimble and it will not bend. After the hammer is out of shape, the handle is knurled to increase friction.
Finally, use a tap to thread the hammer handle and assemble it with the hammer head. The hammer is finished.
It's a pity that the classmates in the class placed too many things on the hammer: put the hammer head on the grinder to polish, put the hammer handle on the machine tool, and polish it with sandpaper.
What's more, when I was learning about heat treatment, I took out the hammer head again and performed quenching.
In his previous life, Zhou Yan also played like this, but in this life, facing the enthusiasm of his classmates for hammering, he couldn't bring up the slightest ripple in his heart...
The hammer head and handle are both made of Q235 steel, with a yield strength of 235 MPa. The strength of the steel has reached its limit when it leaves the factory. After the messy heat treatment, the mechanical properties of the hammer can only decline, and there is no possibility of improvement.
The hammer had just been completed, and everyone held it as a treasure, even reluctant to use it for the most basic task of hammering nails.
The only use of this thing is to use it as a murder weapon when joking, aiming at the thighs or buttocks of your classmates; when you are angry, you can also aim at the head.
It's just that no one has ever seen tofu puffs poured with chili oil...
After the internship in machining, there is also CAM, which is a computer-aided machining system. There are not so many online CNC machine tools for students to mess with in the school, so they can only deal with the simulation system.
Together with the CAM computer room are the most valuable assets of the school-run factory: eighty-nine CNC machine tools and a tightly covered 3D printer.
Even though there are only eight or nine CNC machine tools, such a scale is already ranked high among non-mechanical companies: Five or six years later, Zhou Yan worked for one of the top ten "large groups" in the industry. They only have two or three CNC machine tools.
As for the 3D printer, if Zhou Yan hadn’t come back from 16 or 17 years ago, he wouldn’t have known it was a truly high-end product.
In order to let students get to know 3D printers, the teacher from the School of Mechanical Engineering who led the team also used a printer to print a mask to show off...
In his spare time, Zhou Yan wandered around the CNC workshop and found that most of the CNC machine tools were domestic single-axis machines, which had more CNC and servo mechanisms than the machine tools tested.
As for the multi-axis multi-linkage machining center that is still a legend now, it is still a legend...
After CNC, there is the formal forging and stamping, and finally casting and welding.
For casting, you can play with molding sand. If you are good at it and don't graduate from college, you can also go home and cast aluminum pots and pans.
As for electric welding, Zhou Yan felt sick just looking at it.
When I was doing equipment installation in my previous life, the subcontractors were not good enough. Project managers like Zhou Yan sometimes had to perform gas-shielded argon arc welding in person. Zhou Yan even got a pressure vessel welder certificate.
What's even worse is that after the high-voltage equipment is welded, it must be radiographed, and more than half of the butt welds must be photographed for inspection. Looking at the X-ray photos of the welds under a cold light source for a long time made Zhou Yan vomit...
After I switched jobs to make agricultural machinery, I had more opportunities to come into contact with electric welding machines and acetylene: small agricultural machinery companies did not have many welders, so they had to do all the trial production and modification of machinery by themselves.
After finishing the electric welding, the metalworking internship for nearly a week was concluded.
After the leading teacher made a hasty summary, the internship was officially over. But before Zhou Yan could step out of the school factory, a group of animals in the dormitory surrounded him.
"Lao Zhou, in order to celebrate the successful conclusion of the metalworking internship, would you like to express your gratitude?"
"Okay! There is a barbecue street on the street east of the school. Let's have barbecue in the evening!"
"all right!"
A group of animals didn't know what humility meant, so they happily surrounded Zhou Yan back to his dormitory.
To be honest, Zhou Yan really misses the barbecue in Yunzhong City.
In those years, the price of houses had not increased. Although the second senior brother had become an immortal, it could not affect the price of the Sheep Power Immortal who was thrown into the oil pan and fried. The price of a bunch of 50 cents had been maintained for several years...
"Fifty skewers each of mutton, ribs, and heart tubes! Two boxes of peanuts, edamame, and snowflakes..."
After ordering the basic plate, Zhou Yan handed the menu to Zuo Jiyun: "Order whatever you want, don't be polite to me..."
"Twenty skewers from Xiaohongyao, ten skewers of peppers, ten skewers of steamed buns..."
The latitude in the clouds is relatively high, and summer is basically like every summer. Most people can survive the dog days just by relying on electric fans.
Moreover, the summer heat is now over, and the most common autumn tiger in other places has long been extinguished by the cold wave from Siberia...
"We've been hooked, let's find out!"
After a glass of cold beer, early autumn turns into early winter.
"start……"
Before Zhou Yan could finish speaking, the young men, who had been tortured by the food in the school cafeteria that was below the standard, grabbed the skewers, put them horizontally in their mouths, and flicked them with slight force...
The meat went into your mouth, and the meat juice and seasonings were still at the corner of your mouth.
"Boss, napkin!"
In less than a minute, the fifty or sixty skewers that had been grilled were completely wiped out.
"Lao Zhou, let's go for stir-fry next time. Kebabs are a bit uneconomical!"
"Is there another time?" Zhou Yan gave Zuo Jiyun a roll of his eyes, "I'll just ask you this time!"
"Oh, Lao Zhou..." He Qiulin, who was sitting opposite, lowered his voice, "How much is the first-class scholarship?"
"It's just a W, not much!"
He Qiulin almost carried it in one breath: That's easy to say!
"Old Zhou," Yan Wentao chuckled, "I heard them say that the girls in our class are sharpening their knives and planning to knock you down from the number one position..."
This chapter is not over, please click on the next page to continue reading! "Whatever..."
This Zhou Yan is really not afraid.
The professional basic courses and professional elective courses in sophomore year are all Zhou Yan’s basic courses.
"Power Plant Boiler", "Steam Turbine Principles" and "Pumps and Fans" are all familiar to Zhou Yan; "Fluid Mechanics" and "Engineering Thermodynamics" are still used now. As for "Basics of Mechanical Design" and "Electrical Engineering" Zhou Yan is even more familiar
Don’t worry anymore…
"You are really confident..." Yan Wentao shook his head helplessly.
"Oh, by the way..." Yang Haisheng, as an "outsider", suddenly interjected in a low voice, "You said Liu Yan's removal had something to do with the new squad leader Li Ying?"
"Any fool can see this!"
In Class 4, the only roommates who can handle a bowl of water are Zhou Yan: most of them are from other provinces, there is no regional discrimination, and they are not very good at male chauvinism.
"However," Yan Wentao smiled, "in a school like ours, being the squad leader is not interesting. Being in the student union may be a little bit interesting..."
"Old Yan, I heard that the student union is recruiting new students, why don't you go take a look?"
"Me?" Yan Wentao pointed at himself, then looked at Zuo Jiyun, smiled and shook his head, "Let's forget it..."
After five or six glasses of wine, Yang Haisheng, who was still a little unfamiliar at first, became more active and started to make jokes...
A group of people drank from 5 pm to 8 pm. Someone's bladder couldn't hold it anymore, so he proposed to pay the bill.
The seven people in Zhou Yan's dormitory, plus Zhao Ruijie, spent more than 600. This was because Yu Hongliang and He Qiulin were both out of shape.
After settling the bill, Zhou Yan hung behind a group of people, swaying and blowing in the cool breeze.
Not far away, Lin Junfeng suddenly fell behind and approached Zhou Yan: "Old Zhou, will you accompany me to buy a laptop tomorrow?"