The main business here is the retreading of truck tires. The incoming scrap tires are first cleaned and then weighed.

Each type of tire has a fixed weight and is classified according to category. The lightest tire is ground and covered.

The engraved pattern on the middle gear is sold to rural areas to make tires for small vehicles, and is used for agricultural vehicles known as ton trucks.

The best type of tires, or tires with simple damage, are repaired and processed using the existing equipment in the factory, and then sold to construction site dump trucks.

Of course, there are also businessmen who directly buy such tires and sell them on the market. In this case, the overall appearance of the tires must be renovated and re-skinned, which is more expensive.

Generally, the price of such retreaded tires is only 70% of regular tires, and there are discounts for large quantities.

Ji Dongqing only briefly learned the molding process of plastics in school and knew little about rubber.

In these few days, Ji Dongqing got to know rubber again.

According to the vernacular words of the technician who greeted me at the factory, the molding of rubber is like steaming steamed buns. Once cooked, it will be ready. The direction is irreversible!

To repair a tire is to stick a piece of dough on top of the steamed bun and then vulcanize it using corresponding equipment.

A tire repaired by a good master is done step by step, and the finished product is not much different from a new tire. A tire repaired by a poor master will burst when the vehicle is heavily loaded.

In order to increase the toughness of the tire, repair workers will use high-strength nylon thread to sew the wound at the crack location, and then apply glue to vulcanize it.

As for those leather-clad tires, Ji Dongqing was speechless.

Woven cloth and rubber are wound, and then vulcanized together with the polished tires. You don't need to think about what this thing looks like under high-speed and heavy-load braking.

This time Ji Dongqing fully understood why the brake tires of large vehicles peeled off on some highways. It turned out that it was all due to these fake tires.

The reason why Huang De asked Ji Dongqing to look at these things was because he wanted Ji Dongqing to have a deep understanding of the past and present life of every component related to the life of the vehicle.

Facts have proved that Huang De's decision was correct. Ji Dongqing watched every step in the tire retreading factory very carefully.

Including those fake tires circulating on the market, how to identify them, how to manufacture them and how to withstand their limits.

"Ji, you two go collect the take-out tires!"

On the fourth day, Ji Dongqing had become no different from the workers. He was covered in dust and his face was pitch black, but Ji Dongqing became thinner.

The factory director asked Ji Dongqing and another worker to remove the tires from the cart outside and replace them with new ones.

"This tire costs 200 yuan, and the broken one we charged is 20 yuan. Old Liu has made a lot of money again, paralysis!"

The worker was already familiar with Ji Dongqing and cursed while working.

In the parlance of a petty worker, if it wasn't so close to home, he would have left a long time ago. The boss has been asking for a salary increase for three years, but he hasn't received a cent increase, but he has done more and more work.

Ji Dongqing sneered and skillfully pulled off the tire. With a flick of his hand, the tire rolled accurately to the two people's workstations.

Ji Dongqing skillfully polished the damaged part of the tire, then reinforced it with high-strength nylon thread, then attached A-mixed rubber, and then found the corresponding pattern mold and buckled it on it.

A few minutes later, the damaged tires were vulcanized on top of the coal pile. The whole process was completed in one go. The factory manager was smoking a cigarette with satisfaction in his eyes.

"Look, this is our apprentice's seasonal job..."

The factory manager held a cigarette in one hand and began to speak in words that Ji Dongqing could not understand. From everyone's eyes, Ji Dongqing probably understood what the other party meant.

That means eating less, doing more, learning quickly, and without complaining.

Ji Dongqing knew what was going on and didn't say anything because Ji Dongqing would leave tomorrow.

Although the scheduled study time was ten days, Ji Dongqing no longer wanted to stay. Ji Dongqing already understood the craftsmanship of this place, but the factory atmosphere was too bad.

Compared with Lu Ping in Shiyan, the boss named Liu from Heze here runs a sweatshop.

In such a harsh environment, workers have created huge wealth, but their wages are pitifully low, just a thousand yuan.

That is because Shandong is a province with a large population and there are not many local factories, so it is difficult to recruit people to work in the Northeast.

Ji Dongqing has already booked to go to Dongying tomorrow. The factory location was found by his uncle from Shandong. Ji Dongqing plans to go there to see how a large retread tire factory works.

That night, Ji Dongqing greeted the factory director.

"Leave? Leave in just a few days?"

Seeing Ji Dongqing about to leave, the factory director had a look of surprise in his eyes, wondering if there was something wrong with you.

"Teacher Huang and I discussed going to the factory in Dongying to have another look, and then we went back to school. I've been so tired recently that I can't bear it anymore!"

Ji Dongqing was very embarrassed and said to the other party. The factory manager named Liu smacked his lips to express his agreement. Ji Dongqing did not know that he had made a serious mistake.

What Ji Dongqing didn't expect was that when he left the next day, the factory manager surnamed Liu did not come, but instead a rich man came.

"Um, I want to check your salute!"

"What?"

"The boss told me that you can't take away anything from the factory!"

"Stuff from the factory? What else is there besides broken tires?"

"We still have to check that!"

Without the generosity of the boss in Shiyan, at least they took away a lot of drawings when they arrived and paid for the travel expenses. Ji Dongqing had already mailed them back to the school for Xiaohe.

The Shandong boss here named Liu came up with this trick, but Ji Dongqing didn't understand.

In order to leave early, Ji Dongqing could only let the other party look at his things from a distance, including even a piece of clothing.

"Then pay for the food!"

"Food expenses? Damn it, how do you calculate my wages these days?"

"Apprentices don't get paid, and their food expenses are fifty fifty per day!"

The five big and three thick men had arrogant expressions on their faces. Ji Dongqing felt a hundred thousand alpacas rushing past, wondering what kind of partner Huang De had found. Damn, isn't this a pirate ship?

"Two hundred, take it!"

"There is also accommodation fee, which is twenty per day!"

"Damn, you guys are so awesome, grab it!"

After giving him another hundred, Ji Dongqing packed up his things and got in the car. He thought very much of the local labor bureau reporting this bad company and causing the boss named Liu to suffer a lawsuit. After thinking about it, he decided to forget it. He just stayed here for a few days and got to know him.

It would be better if you understand the nature of the local people.

"Fight me, hum!"

Ji Dongqing got in the car, and the factory manager named Liu came out from the corner and took the money from the hands of the five big and three-year-old man with a smile in his eyes.

Ji Dongqing felt better after the car entered Dongying. Unlike the small place in Laiwu, the workshops here are more modern and automated.

The buildings of most factories are very formal, and the arrangement of exhaust and machinery is very formal.

Based on the experience last time, Ji Dongqing stopped at a nearby hotel this time and ate at a street stall.

***The author has something to say***

Thanks for the space and emotion, Ah Xiong, Mr. Mechanical Wang, has happiness ever come, it’s another day, Taozhuo, Li Quewu, Chaoge from Datong, Xianle, Book Friends, Ning Ning Ye, Cara Kala

, Li-, book friend, book friend, fresh and refined uncle, w, instant fireworks, nameless 2228 everyone’s great recommendation votes

Thank you, Taozhuo, for your big monthly ticket
Chapter completed!