The Rise of Heavy Industry 1980

Wang Chaoyang and Zhang Miaomiao had breakfast and continued to devote themselves to the design of the new axis.

After the completion of the draft drawing, it is necessary to carry out strength check and detailed design, both of which are also very laborious. Because of the calculation results of the fourth strength theory, there will be no problem with the strength of the main body of the shaft, and the local stress concentration needs to be calculated.

Zhang Miaomiao had calculated the stress concentration problem in the previous design, and this time she was familiar with the road. Of course, even though it is a familiar road, the huge amount of calculations still consumes a lot of time and energy.

Near noon, Zhang Miaomiao completed the calculation of the stress concentration, and looking at the calculation results on the straw paper, the "Red Star Factory Flower" began to worry.

The root stress of the shoulder exceeded the specification, and the calculation results were unqualified, and Zhang Miaomiao dispersed the stress through fillet corners, but it still could not be solved. If there is no other way to reduce the stress, then the new design will still not work.

Wang Chaoyang also noticed Zhang Miaomiao's calculation results, and said after a moment of silence: "Ordinary rounded corners are not good, try the gooseneck

rounded!" "Gooseneck rounded?" Zhang Miaomiao heard this term for the first time.

"It is a fillet with different curvature, shaped like a gooseneck, and the fillet of this shape is more conducive to dispersing stress than ordinary fillets. Wang Chaoyang saw Zhang Miaomiao blinking at him, knowing that the other party couldn't understand for a while, so he took the pencil and drew a simple diagram on the straw paper.

After reading the sketch, Zhang Miaomiao finally understood what a "gooseneck round" was, but her face didn't look much better, because she didn't know how to calculate the gooseneck round.

The amount of calculation for ordinary fillets is already large enough, but isn't it even more difficult to calculate this kind of rounded corners with variable curvature? At least in Zhang Miaomiao's mind, he couldn't find a suitable calculation method.

"It's a bit complicated, I'll do it myself. Wang Chaoyang took the paper and pen and began to write.

Zhang Miaomiao looked at the side with a suspicious face, but the more she looked at it, the more confused she became, the equation that Wang Chaoyang wrote on the straw paper was not too long, but all of them were some symbols that she had never seen before, and she who boasted of her small academic achievements could not see the clue at all! Zhang Miaomiao had

a question in her mind for a while, and at this moment this question resurfaced, what was going on with this Wang Chaoyang?

After coming to the Red Star Factory, Zhang Miaomiao heard others talk about Wang Chaoyang, except that he was the son of the factory director, there was nothing special.

But in just over a month of contact, Zhang Miaomiao found that Wang Chaoyang was very not simple, his expression was very calm, and the things he said often exceeded her expectations, and the academic insights were something that Zhang Miaomiao had never seen!

When Zhang Miaomiao's attention slipped, the pencil in Wang Chaoyang's hand never stopped, the initial calculation formula has been expanded by him, the length has become more than ten times the original, and now the material characteristics parameters have been filled in, and then as long as the result is calculated, the stress value of the gooseneck fillet can be obtained.

Wang Chaoyang, the handicapped party, if it is other calculation process, he will definitely surrender, but he is very confident in the calculation of the gooseneck fillet, because the method of using the gooseneck fillet to disperse the stress is a patent he once proposed, the application of this technology has successfully solved the problem of stress concentration caused by temperature load in the extreme environment of outer space, for which Wang Chaoyang also won a special award issued by the Aviation Administration.

Half an hour later, Wang Chaoyang stopped writing, and a clear value appeared on the eighth piece of straw paper used in a row, and before Wang Chaoyang could speak, Zhang Miaomiao had already said: "The maximum stress is 25.6 megapascals, how much do you take the safety factor?"

Wang Chaoyang straightened his waist and moved his shoulders and said: "5 times."

Zhang Miaomiao was even more excited, 5 times the safety factor is the requirement of Changhai Agricultural Machinery, in this case the stress does not exceed the allowable stress of the material, proving that the new design meets the requirements.

In other words, the axle diameter has been reduced from 15 mm to 12 mm,

which is not an exaggeration for an engineer.

In addition to being excited, Zhang Miaomiao faintly felt that something was wrong, but she couldn't think of it because she was in a hurry. It is now the afternoon, Pan Daqing of Changhong Machinery should have come to the Red Star Factory, Wang Chaoyang asked Zhang Miaomiao to put away the new map, and the two went to the factory director's office together.

In the factory director's office, Wang Song's face was pale.

Sitting opposite was a group of Changhong Machinery, among which Pan Daqing was holding a cigarette with an impatient face.

Just now, Pan Daqing said that as long as Wang Song told the secret of the production efficiency improvement of the Red Star Factory, the supply of 15mm bar stock could be restored. And Wang Song is like a mirror in his heart, the current technological process is the core competitiveness of the Red Star Factory, and it is also the key to the Red Star Factory's ability to turn losses into profits.

However, the price of disagreement is the out-of-stock of 15mm bar stock, followed by the breach of contract of Changhai Agricultural Machinery, and the Red Star Factory will face huge liquidated damages and reputational losses...... The final result is bound to be

bankruptcy! One is the loss of core competitiveness, the other is bankruptcy, neither of which is the result that Wang Song is willing to bear, but at the moment he has no choice.

"Lao Wang, are you still hesitating? Hurry up and give me a happy word, I don't have time to spend it with you!" Pan Daqing pressed the cigarette butt in his hand into the ashtray and lit a new one, "Grind and chirp like a girl! The last cigarette, I'll leave after smoking!" "Pan Daqing

, do you really plan to do such a desperate job? If the Red Star Factory really closes down, don't you worry that I will take the old and young masters to block your door?" Wang Song gritted his teeth and said.

"Hey, I'm really not afraid, if you have a kind, you can try! But Lao Wang, you are really brainless, do you have to go bankrupt? You just need to tell me the method of processing your shaft, don't you Red Star have to go out of business?" Pan Daqing said.

Wang Song's five fingers clutched the drawer, and the knuckles were white because of the excessive force, and the process flow chart of shaft processing was placed in the drawer.

Pan Daqing noticed this detail, and said with a smile on his face: "The thing is in the drawer?" I said Lao Wang, don't be too stubborn, don't you take it out and it's over!"

Wang Song still hesitated.

At this moment, there was a knock on the door, and Wang Chaoyang and Zhang Miaomiao arrived. After entering the door, Wang Chaoyang walked directly to Wang Song and whispered in a low voice.

Pan Daqing's goal was about to be achieved, but he was disturbed, he was very unhappy, and he couldn't say anything after all when talking between father and son.

But gradually, he realizes that things are starting to go wrong.

I don't know what Wang Chaoyang said, Wang Song's gloomy expression was slowly stretching, and the big pimple in the middle of his brow gradually disappeared, and finally the director of the Red Star Factory actually smiled.

Pan Daqing's heart was raised, but he still remained calm, in his opinion, the Red Star Factory had entered a dead end, whether it was dead or alive was completely a matter of Pan Daqing's words.

After Wang Chaoyang's words were finished, Wang Song leaned back on the chair and lit a dry cigarette for himself, and took two puffs before saying: "Pan Daqing, you are so bad, aren't you afraid of having a child without eyes?"