Rebirth 1990: I have three golden fingers

Fang Bai came to Nanjiang Company's production workshop and took a walk around first. He unexpectedly found Huang Xing in the pressure test workshop, conducting a leakage pressure test.

He was in his early thirties, wearing a worker's overalls, and there were two employees helping him.

"It's installed well, but I don't know where the leak is. Adjust the range to increase the flow rate, but the leak is too serious."

"Boss, is there something wrong with the sealing ring?"

"The sealing ring is good. It has been replaced with a new one. It has not aged and the dimensions match."

Huang Xing was talking with his employees, and several 6-inch butterfly valves were placed on the ground. He didn't notice Fang Bai coming over.

Fang Bai heard their conversation, and it seemed that they were trial-producing new products, or optimizing the products.

No matter whether it is a new product or an old product, it is not suitable to inquire about other people’s stuff.

In fact, butterfly valves are very similar. Just looking at them, you can't tell where they come from.

Even if the drawings from the same company are different, the parts used, the processing techniques and assembly techniques are different, the products produced will still be different.

Therefore, people are willing to do experiments here. Factories often go here and they also bring customers here to visit. Which factory is not like this.

When Fang Bai saw the worker, he reminded Huang Xing. He turned around and looked over. He was startled and looked at Fang Bai's clothes. He was wearing a CALL machine. He was not a worker. Then he asked politely: "Hello, who am I looking for?"

"Hello, Mr. Huang, I came here to visit you." Fang Bai stretched out his left hand, wanting to shake hands with him.

The opponent thought his hands were dirty, but Fang Bai couldn't miss it and quickly grabbed it.

Otherwise, how can we detect other people's thoughts?

After shaking hands, Fang Bai handed over his business card.

Huang Xing was attracted by Fang Bai's enthusiasm and the fact that he didn't mind his dirty hands. He looked at the business card carefully. It had a name, a call number, and the words "I'm here when you need me" on the back. not bad.

He needs help now, can you solve it?

However, it was impossible for Fang Bai to help him with professional matters.

"Hello, Mr. Fang, what do you want from me?" Huang Xing was busy, military style, and did not talk in circles.

“Look for cooperation and see if there is anything we can do to help, so as to strengthen cooperation between the two parties.

I see Mr. Huang is testing the butterfly valve for leakage. I know a little bit about judging faults. If it's inconvenient, I won't ask more. "Fang Bai also said bluntly that he was busy, so he couldn't think of following his tricks. He was just thinking about how to send himself away.

Through Huang Xing's ideas, I learned that they were testing a new product for leakage, and the pressure was one level higher than the old product's 150 pounds, that is, 300 pounds (4MPa).

Twice the pressure, there are more problems, and leaks are more likely to occur.

After hearing what Fang Bai said, Huang Xing became interested: "It's not inconvenient. Mr. Fang, look at what's wrong with my butterfly valve. It's leakage between the disk and the sealing ring. Everything is fine."

"Let me take a look first."

Fang Bai got his consent, squatted down, flipped the butterfly valve, and looked left and right.

Then, use the golden finger detection directly.

The middle finger LV1 is green, indicating that the parts are good and not bad.

There is some light yellow in the middle of the valve body. It is estimated that there are sand holes inside the casting, but it does not affect the sealing problem.

The middle finger was tested for leaks in the LV2 design, and it was found that the sealing ring groove was red, but there were no other problems.

[Test result: The sealing groove design is too deep and the sealing is poor]

It didn't say how deep it should be. In one sentence, it only told Fangbai that there was something wrong with the design of the sealing groove.

Fang Bai looked at one item, then looked at another one, with the same test results.

Then, he tried to move the disc and sealing ring. Based on his many years of experience with valves, he found that they were quite tight.

However, if the pressure increases and the anastomosis surface is not tight enough, it may not be enough.

If the sealing groove is shallower, the adhesion between the sealing ring and the disc will be greater. This reason is relatively simple.

In other words, making the sealing groove wider and using a sealing ring with a larger width may also solve the problem. However, Goldfinger did not explain this. He may think that a shallower sealing groove will solve the problem, or Fang Bai does not understand it well enough. through.

Huang Xing and the workers stood aside, watching Fang Bai's inspection without disturbing them.

Anyway, they can't detect the cause, so what if they let others check.

A few minutes later, Fang Bai stood up, clapped his dirty hands, and said bluntly to Huang Xing: "Mr. Huang, your butterfly valve is 300 pounds, and the pressure is twice as high as 150 pounds. It seems that the structure is exactly 150 pounds. I don’t know if your design has optimized sealing grooves compared to the 150-pound version.

I feel that the sealing groove is a little deeper, and the adhesion between the sealing ring and the disc is a little weak. If it is a 150-pound disc valve, there is probably no problem.

If you don't change the sealing groove, there is another way. It should be possible to change to a sealing ring with better elasticity.

But I suggest that the sealing groove can be solved by making the sealing groove shallower, which reduces the processing amount. However, it is not easy to find a sealing ring with very good performance. It has to be imported. "

As soon as Fang Bai finished speaking, Huang Xing fell into deep thought, as did the other two employees.

"Boss, our design is exactly the same as the 150-pound one. It can be applied directly. This may be the reason that Mr. Fang said."

Huang Xing heard what the technician next to him said, and he himself felt that Fang Bai's words made sense. He said to Fang Bai: "Mr. Fang, what you said may really be the reason why the sealing groove is too deep. We can give it a try. .”

After finishing speaking, he explained to the technician and asked the workshop supervisor to assign a task to process a butterfly valve to try. The sealing groove should be 0.3 mm shallow. It should not be too shallow, otherwise the gate will not close.

After processing, tell him again.

After the explanation, he politely said to Fang Bai: "Mr. Fang, come sit down in my office and let's have a chat. Please forgive me for the poor reception just now."

"Mr. Huang, you're welcome. I came at the wrong time. You happened to be busy. Besides, what I said may not be right. I can only give it a try."

"No, Mr. Fang came at the right time, and he might have helped me solve a big problem.

Hey, optimizing a product is never that simple. When we develop a new product, we don’t try too many times. Huang Xing smiled.

Fang Bai and Huang Xing went to the office. They washed their hands in the bathroom before going to the office.

Huang Xing politely poured tea for Fang Bai. Fang Bai's behavior just now really impressed him, and maybe it really helped.

He had been tinkering with the butterfly valve for two months and had tried it countless times.

The two chatted for a while, and Fang Bai said that he was looking for cooperation to process gate and stop valves. The price was much cheaper than others. Huang Xing was immediately moved by the quotation.

However, he also said: "It is true that all of our gate and stop valves have been outsourced for processing, and the contract has been finalized. I, Huang Xing, am also a person of integrity.

Mr. Fang's quotation is so low that I have no reason to refuse. I can only wait until my old contract is completed before we can negotiate. "

Huang Xing did not agree directly, but if there are no problems and the price is low, you can definitely try it, but he is worried about the quality issue.

“I have done processing for several companies here, and the quality is guaranteed, and they have all been well received by Party A.

Well, I think Mr. Huang is quite busy, so I will visit again after a while. "Fang Bai felt that it was almost done. If we continue to talk, it would be nonsense. He really has something to do, and his mind is full of research and development. This has to be admired by him.

"Okay, I will contact you when there is news and call you directly."

Huang Xing didn't expect that Fang Bai knew how to advance and retreat, unlike some salesmen who relied on him and had to be sent away by themselves.

After Fang Bai left Huang Xing's office, Huang Xing went to the workshop and directly urged the workers to process the sealing groove.

Half an hour later, the leak test was conducted again.

"Hey, it's not missed! Mr. Huang, that Mr. Fang is so awesome, he can see the problem at a glance." The technician said in surprise.

"It's real strength and familiarity with our products."

Huang Xing was also pleasantly surprised when he saw the results, but he still said calmly: "Lengthen the test time and let the workshop try a few more cars. If there is no leakage, it doesn't mean anything."

"Okay, I'll tell the workshop supervisor right now." The technician heard this and went to the workshop supervisor.

Huang Xing stayed where he was, thinking, and continued to observe the test.

The normal test for leakage is two to three minutes. It has been ten minutes and there is still no leakage, which means the seal is good.

It's really a slight difference, a thousand miles wrong.

Breakthroughs at key points cannot be figured out all at once.

If it hadn't been for Fang Bai's reminder, I don't know when the solution would have been found.

"It seems that I owe someone a favor."

Huang Xing didn't like to owe favors. He originally tried to give Fang Bai some orders, but now it seems that it doesn't matter if he gives them all to others. As long as the quality is guaranteed, it's just a return of the favor.

A shallower depth of 0.3 mm may not be the best. You need to test several depths.

That afternoon, Huang Xing tested sealing grooves of different depths and found that the one 0.33 mm shallower than the original depth was the best, which directly solved the problem that had troubled him for two months.

He has decided that when the old contract ends, the closing order will be given to Fang Bai.

He also thought about inviting Fang Bai into their company to engage in scientific research, but considering that he was wearing a CALL machine and was doing well in business, and his income was probably not low, it was impossible for him to work for him. He could only invite him to help because he had scientific research difficulties. have a look.