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This leads to a deeper concept, which has been concluded by the predecessors after countless calculations and practices, that is, the weld should be as close to the neutral axis as possible to reduce bending deformation.

The most interesting part is that the weld is not a visual weld, but a physical one, as far as the welding of the fin to the round tube is concerned, the weld is angled, just 45°.

In the case of horizontal welding, the neutral axis at the weld is a straight vertical line, which obviously crosses.

For 45° oblique welding, the neutral axis at the weld can be just equivalent to the surface tangent of the round pipe, which is also 45° oblique, because it is completely overlapped, and the excellent position with the least distortion and deformation in theory is achieved.

Although the above theories are not beyond high school physics, even college physics has not strung them together, so Wen Tianming is categorically incomprehensible. Not to mention Wen Tianming, Zhang Yifu himself can't fucking understand the theory he wrote.

In this way, Chang Siping's 45° oblique welding is absolutely scientific, so what is the need to argue?

No, it has to be argued. Science can't explain everything, so we need experience, the law can't eliminate all crimes, so we need the police, and studying hard is not destined to make progress every day, so we need to be on the lookout or study reincarnation.

Wu Qiang is a person who has experienced actual production, and has been the technical leader of a factory, if each production step is carried out in the most theoretical and optimal way, the people in that factory will be exhausted. Operators always have to make trade-offs between cost and quality, and always maximize benefits. Oblique 45° welding requires welding by fixing the tube to the bracket. The test for the welder is extremely great, and in order to ensure the symmetry of the fins on both sides, the difficulty and time of the work have to be added a lot.

Therefore, he found it difficult for him to accept this scheme, and he believed that horizontal symmetrical welding, skilled workers, and perfect synchronization of fin welding at both ends. The result is that it can meet national standards and does not need to be so complicated.

Chang Siping repeatedly emphasized that he had done a lot of work, and it was impossible for the existing materials and equipment to meet the standards.

Wu Qiang also said, I personally check it, our people are meticulous, it's okay.

Chang Siping said again, don't you believe in science?

Wu Qiang also said. Don't you believe in practice?

In the end, the conclusion given by Zhang Yifu was placed in front of the two.

The two of you, you don't have a show, you have to listen to Lao Tzu.

This is what shocked the two of them the most when they saw Zhang Yifu's paper.

Zhang Yifu not only heard their arguments, but also seemed to have practiced them himself, using horizontal symmetrical welding and 45° oblique welding to conduct tests, not only for comparison. And the results are examined, and a series of precise test numbers are given. It's dazzling and dizzy to see.

First of all, horizontal welding, the full length of the bending deformation of 36mm, the wave deformation of 13mm, the twisting deformation of 6mm, all three numbers do not meet the standard. Wu Qiang, you can die.

Then there is 45° oblique welding, the full-length bending deformation is 6mm, the wave deformation is 12mm, and the twisting deformation is 4mm, and the scientific theory can really stand the test. However, it is a pity that the wave deformation still does not meet the national standard.

Of course, this is not the end of Zhang Yifu's "magic paper", in the end, he proposed "slotted diagonal welding", which is the legendary scheme three.

According to his self-directed conclusion, the results of oblique welding are still good, but the wave deformation is slightly exceeded, so in order to reduce this deformation, we can open a small groove of a certain specification on the fin. Scientifically speaking, this is equivalent to changing the local stiffness of the fins, thus reducing the restraint and thus reducing the amount of deformation;

For the slotting interval and the specification of the slotting, Zhang Yifu also gave a very detailed figure.

Chang Siping, who has seen this qiē, is completely incomprehensible, if it weren't for the fact that these numbers seem too real and too professional, he would have torn this damn piece of paper a long time ago, a layman who is a bird.

But under the backdrop of these figures, Chang Siping has no courage and courage to tear it again. Practice is the only criterion for testing science, and this person seems to have practiced it at some point! How can those who engage in science casually deny it!

In nearly ten minutes of reading and thinking, Chang Siping's whole body floated, and he finally slowly put down the paper and looked at Wu Qiang opposite.

Wu Qiang was also looking at him with the same expression.

"Test!" both said at the same time.

In fact, they are both convinced and unconvinced.

It is Zhang Yifu's theory that is impeccable.

It is also his theory that is not convinced, why is it so true!

So is it to accept or not to accept?

Speaking with facts, according to the design of the paper's specifications, the three types of cases are welded separately, and you will know it at a try!

The two of them have really drilled the horns of the bull before, and there is no conclusion in such a fight, and it is long overdue to experiment.

But regardless of whether they accept Zhang Yifu's theory or not, these two are completely convinced of Zhang Yifu.

Wu Qiang had long heard of the ambiguous relationship between his family and a young cadre of the Shaozhuang faction in the system, and the strength of this young Zhuang director far exceeded his expectations, and he even had no doubt that this director would be too lazy to be a director in the future, and everything he did was impeccable.

Chang Siping has infinite hope for the younger generation. Judging from the things in front of him, genius is often beyond people's understanding, and in the field of science, they complement each other, and Zhang Yifu has reached this point at a young age, but it is a pity that he has entered the official career...... Of course, it can also be another way of thinking, that is, Zhang Yifu somehow stole the finished product design drawing, the test number jù and the process flow......

In any case, Zhang Yifu's paper has touched and helped the theoretical and practical schools a lot, and if his results are not wrong, as long as the difficulty of fin welding is determined, the rest of the problems will no longer be a problem.

The rest of the people, seeing that the two of them were anxious from sad faces, suddenly became refreshed, and they were full of surprise and puzzlement. Especially the two students led by Chang Siping, did the tutor take too much medicine today?

"You two, take a closer look, too. Chang Siping breathed a sigh of relief, leaned back in the chair, lit the piece of paper and said, "Let's not talk about whether the number is accurate." It's a good model for you to do your essay and write the experiment part. ”

Isn't this project the title of the graduation thesis?

Is this paper already done?

The two students hurriedly rushed to read, it seems that the tutor likes this style, whether there is one or not, he has to learn according to this when he publishes his paper.

Although Wen Tianming was accustomed to seeing Zhang Yifu's ability, this time the unpredictable prophet also came to him, which was comparable to Zhuge Liang's clever plan, and he left a piece of paper a few hours ago. When there is a stalemate at this time, as soon as you make a move, you are all served!

"Someone, already ahead of us. Chang Siping looked at Wu Qiang, who was like an old enemy, and shook his head with a smile.

"Hehe, I'm only at the deputy director level until now. Wu Qiang spread out his hands, recalling the limited sound and smile left by Director Zhang, and sighed sincerely. "Sure enough, I have the ability. ”

Amazed. He turned his head again and said, "Wengong, did Director Zhang say anything else?"

Wen Tianming shook his head: "It's nothing." ”

"What, Director Wu still thinks it's not enough?" Chang Siping said with a smile.

"Enough, enough. Wu Qiang smiled, "But in the face of knowledge, I never feel enough." ”

"Yes. I remembered a funny remark. Chang Siping sighed, "Keep hungry and thirsty, stay stupid." ”

In human terms, this sentence is to never feel that you are awesome, learn to think slowly.

Chang Siping suddenly felt. This should be the attitude of facing Zhang Yifu, staying hungry and thirsty, and remaining stupid.

In fact, these two are really thinking too much, for Zhang Yifu, this behavior is equivalent to depicting the unknown oracle bone inscription according to the cat and tiger, and he doesn't expect to play any role.

After all, in terms of specific production technology and processes, it is difficult for Zhang Yifu to help anything, copy two relevant theoretical materials and throw them over, which is the best to use, and if it is useless, it will not be compensated, anyway, it is his own factory and his own family.

So when he heard that the two of them began to talk about horizontal welding, oblique welding or something, he also took this as a clue and picked up two paragraphs, which unfortunately solved the dispute between the two.

As for why he didn't bring it up at the right time, but let Wen Tianming take it out a few hours later, the reason is simple......

Because Zhang Yifu himself didn't know what the hell it was, Wu Qiang or Chang Siping would be dumbfounded when he asked a detail casually, and he had to explain the origin of these numbers, etc., Zhang Yifu didn't know how to say a word, and he didn't have the energy to study or lie.

Simply, keep the sense of mystery, hide the merit and fame, when you have doubts, I have gone in style, leaving only the technology in the workshop.

Judging from the results, this is just right.

The others faced this piece of paper and raised countless questions, but there was no one present, so they had to give up. Wu Qiang and Chang Siping formed a unified opinion this time, first do a good job in front of you, no matter how Zhang Yifu came up with this, go to the workshop to open the welding now, and see the results to speak.

After all, this is a super shortcut outlined by Zhang Yifu for the two, and they just need to verify whether it works.

The team was ready to go to the workshop and test it with the only sample fins and pipes, Wen Tianming was really tired and took the opportunity to retire.

As soon as Wen Tianming left, before Wu Qiang could summon the old welder, the young man in the office hurriedly rushed into the conference room with an anxious look on his face.

"Factory director, Mr. Xiang is back!"

"Oh. Wu Qiang waved his hand casually, "It's okay, I've explained to the president, and the rest of the matter will be reported normally, she won't keep an eye on the whole process." ”

"It's not...... She came back in a big car! She just got out of the car! She said that Director Jia had come to inspect!"

"Director Jia, what Director Jia?" Wu Qiang didn't react for a while.

The young man hurriedly said: "It's Director Jia of the North China Bureau! Director Zhang, the director of their Energy Conservation Office!"

Wu Qiang was startled and almost fell off the chair: "Jia ...... Jia Tianyun: The one who was just transferred to the North China Bureau?

"yes, they should already be on their way this way. The young man wiped his sweat.

After Wu Qiang was stunned for a long time, he finally reacted and shouted: "Quick, quick, call all the factory leaders! Welcome! Change tea! Change water!"

On the other side, Chang Siping frowned, afraid that the troublemaker was coming.

The two students, on the contrary, were full of anticipation and curiosity, but wanted to see the true face of this immortal. (My novel "Super Power Power" will have more fresh content on the official WeChat platform, and there will be a 100% lottery gift for everyone!Open WeChat now, click on the "+" sign in the upper right corner "Add Friends", search for the official account "qdread" and follow, hurry up!) (To be continued......)