At this moment, Song Qingshan was slacking in the workshop.
What was that? Work hard?
It was impossible to work, slacking off was the way to go.
The Third Rolling Mill was quite big, and there were probably thousands of workers.
Simply put, the production process of the rolling mill was to roll steel ingots or billets into steel.
The cross-section shapes of the produced steel were mainly divided into three categories:
Steel plates, steel pipes, and section steel (including wire rod).
However, after Song Qingshan observed the ninth workshop, he realized something.
There were so many people in such a big factory, but they were still using semi-manual operations.
He did not see any signs of automaton.
There were only a few types of machines in the entire ninth workshop, such as the cogging machine, the strip mill, and the section mill.
The work types were not clearly distinguished, and it seemed a little messy.
There was no steel pipe mill or continuous rolling mill.
There was no automated equipment inspection or media equipment inspection.
Although he had only seen the ninth workshop, he felt that the other workshops would not go there first.
Alright, this is my chance.
When Song Qingshan was observing, he found an old antique.
60-inch (4064mm) two-high and four-high double-stand plate mill.
Or it could simply be called an S-made four-high plate mill.
In the past, this was specially used to produce tank armor steel plates.
However, it had been too long.
The advanced rolling mill was still in use.
However, the thickness of the steel plate could no longer meet the demand, and it was basically about to be eliminated.
The person who used this rolling mill was his master, Lin Tao.
At this moment, he arrived behind Master Lin.
He silently watched Master Lin operate this old antique.
What Song Qingshan didn't know was that the factory had long wanted to scrap the rolling mill.
However, the amount of steel needed for infrastructure projects of all sizes was increasing.
The production tasks in the factory were huge.
That was why he let this old antique continue to play his role.
There were not many masters in the factory who could use this four-high rolling mill.
And his master was one of the best.
"Watch carefully and pass me the ingredients!”Master Lin instructed when he saw Song Qingshan standing behind him.
As the saying goes, if you teach your disciple, your master will starve to death.
Seeing that Master Lin did not hide anything from him and was so dedicated, although he knew how to operate it himself, he had to accept this favor.
He carried a steel ingot and respectfully handed it over.
Master Lin took the materials and stuffed them into the feed.
Seeing that everything was working normally, he turned to Song Qingshan and said,
"Look, the plate rolling is divided into three stages.”
"Now is the first stage, forming and rolling.”
"To ensure the straightness of the steel plate, in addition to taking various necessary measures to ensure the shape of the plate, each steel plate with a thickness of less than 40mm needs to be hot straightened."
" Simply put, this is the main reason for the quality and yield of the steel plate."
After finishing the first step, Master Lin smiled and continued asking,""Do you understand?"
Song Qingshan nodded and said with a smile,"Master, I understand!"
Hearing this, Master Lin's smile disappeared.
He was just asking casually. You're just a young man who's been here for less than a week. You'll understand after reading it once.
It didn't matter if he didn't understand.
This rolling operation was no joke.
Thinking of this, Master Lin looked unhappy and said coldly,"Then tell me how it works and what the principle is.”
If he couldn't answer, he would give him a good scolding, even if it was his old friend's nephew.
Master Lin's tone turned cold.
Song Qingshan was slightly taken aback. However, after thinking about it, he understood why. He didn't know whether to laugh or cry.
He immediately said,"Forming rolling is also called shaping rolling."
"It is to roll the plate in the length direction (that is, in the vertical direction) for 1-4 times.”
"The purpose of forming and rolling is to eliminate the influence of the irregular shape of the slab due to clearing.”
"To obtain the accurate thickness of the blank before the second stage of the widening rolling, and to form the end into a fan shape to reduce the barrel shape during the cross rolling.”
"To lay a good foundation for the improvement of the thickness and width precision of the plate in the widening rolling stage."
"That's about it."
"Master, please advise me if there are any mistakes.”
"It's not too bad. There are some details and small problems. I didn't expect you to really understand.”
After hearing Song Qingshan's words, Master Lin was surprised. He first praised.
"I haven't even told you about some of them yet. How do you know so much?" he asked in surprise.”
Song Qingshan smiled honestly,"
"Hehe, Master, I've seen it in my uncle's notes. I've memorized it, but I haven't used it yet.”
Actually, there were no notes.
There weren't many magazines these days.
He had just graduated with a PhD in mechanical engineering in his previous life and had done some research.
His uncle, Song Jianjun, had long returned to the countryside to retire, so he was not afraid of being exposed.
Master Lin revealed a satisfied expression after hearing this. He was smart, not arrogant, and not ostentatious. He was a good seedling.
"It's a good thing to be studious. Don't be embarrassed.”
"Then you must know about the last two stages? Tell me if there are any mistakes.”
...
Song Qingshan didn't show any signs of fear and was full of confidence.
"Alright, I'll just say it."
"The second stage is stretching and rolling.”
"Usually, the width and length of the blank cannot meet the requirements of the width of the waste plate.”
" Thick slabs or ingots need to stop rolling on the rotating roller table in front of and behind the rolling mill, so that the steel plate after forming and rolling can continue to be widened in the width or length direction."
"The purpose of stretching and rolling is to obtain a regular rolling width.”
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