Three welding machines were lined up, and the three welding masters headed by Zhao Jingfu began another welding operation.
This time, the welding materials just determined are used. The same welding materials are in the hands of different welders. If abnormalities still occur, we need to find another reason.
Dazzling sparks flashed again. Wei Yuhui looked at these tired bodies and sighed deeply.
After several hours of hard work, Zhao Jingfu was still the first to complete the welding task. The other two steel plates had been replaced by a wave of people. The original whole day of experiments had made everyone exhausted. This additional project was really hard to bear.
Can't live.
"There are still pores, all three!" Wei Yuhui's answer made Zhao Jingfu fall into deep thought.
There are pores in all three steel plates, and they all appear internally. It is definitely not due to the welder's skills. If it is not the welder, then the problem must be in the current, voltage or temperature. Which one is it?
"After get off work, let's go back first!" Zhao Jingfu thought about it for a long time but couldn't figure it out. Now that his mind was in a state of confusion, he had no choice but to let his subordinates go back and rest first.
Workers, look at me and I look at you. If the squad leader won’t leave, how can they have the nerve to leave? All of them stand there motionless.
Wei Yuhui immediately noticed this situation. She tapped Zhao Jingfu with the inspection record book in her hand, and then pointed at the workers around her.
"If you don't leave, who would have the nerve to leave?" Wei Yuhui reminded Zhao Jingfu.
When Zhao Jingfu saw this, he gave a slight bitter smile, then waved his hand, "Let's go, let's go, I'll get off work too!"
The lights in the experimental plant went out, and the workers left in twos and threes. Another drilling platform was about to be born on the slipway not far away, and the workers were working overtime.
Zhao Jingfu was on his way back to his dormitory. Even though his home was only a short distance from the experimental factory, it was not as convenient as going to the dormitory. The slender figure under the streetlight was like a jumping elf, dangling playfully.
At this time, two bright car lights shone behind him, accompanied by a whistle, "Old Zhao, why are you walking like a blind man? You staggered to the middle of the road!"
Wei Yuhui stuck her head out of the car and asked Zhao Jingfu with a smile.
Zhao Jingfu had been thinking about the bubbles, but he didn't expect that he had walked into the middle of the road.
He shook his head and sighed, "Isn't this a matter of thinking about bubbles?"
"It's useless for you to think like this now. Go back and have a good sleep, and come back tomorrow with enough energy to conduct experiments. Maybe you can get twice the result with half the effort!"
"That's right!" Zhao Jingfu patted his head, "Go back to sleep!"
"Do you need me to give you a ride?" Wei Yuhui patted the steering wheel and said, "My driving skills are pretty good!"
If she hadn't said this, Zhao Jingfu could still get in the car. After Wei Yuhui said this, Zhao Jingfu's chaotic head suddenly sobered up a lot, and then he almost laughed out loud when he looked at the big "internship" on the back of Wei Yuhui's car.
"Forget it, you can still exercise by walking back!"
"Use it if you like!" Wei Yuhui seemed to be dissatisfied with Zhao Jingfu's attitude, and then drove away in her car.
Looking at Wei Yuhui's car leaving, Zhao Jingfu couldn't help but shook his head, and finally sighed and walked towards the dormitory.
Early the next morning, Zhao Jingfu arrived at the test site early after breakfast. The test sheet given by Wei Yuhui last night was still on the table, shaking in the wind.
He looked at the data carefully. Judging from the shape and size of the bubbles, it had little to do with the operating techniques. The possibility of problems with the welding materials was also low. Only the current was the biggest suspect.
Zhao Jingfu opened the laptop at hand and carefully searched for all the technical information about the welding machine. Then he went through Fengyang Shipyard's internal database to conduct a detailed study of the main performance of the welding machine and the welding operations under various voltages and currents.
analyze.
Just when he was carefully looking at the information in front of him, a whistle woke him up. He turned around and saw that Wei Yuhui had come so early, but she didn't seem to have had breakfast. She was carrying a pile of steamed buns in her left hand.
plastic bag, holding a bottle of milk in his right hand, dangling over.
"Old Zhao, it's so early. Have you had breakfast?" Wei Yuhui shook the bun in her hand, "How about I treat you?"
"Let me treat you to some xiaolongbao! You're so stingy!" Zhao Jingfu waved his hand, "You'd better eat it yourself, so you can save money on the dowry!"
Zhao Jingfu was also rude to Wei Yuhui. Anyway, she needed to cooperate with him during this period of time, and she was no longer the inspector who needed support like an aunt.
This sentence made Wei Yuhui so angry that she almost jumped up, waving the milk in her hand and spilling it all over the floor.
"Okay, okay, hurry up and eat your breakfast, don't disturb me looking for information, I have to adjust the current intensity later to see if I can eliminate the pores."
Soon, experimental workers came one after another, and Zhao Jingfu invited everyone to come together to brainstorm and see if they could find the real cause of such pores.
Everyone expressed their opinions based on their own experiences, and they all sounded quite reasonable. Wei Yuhui was also listening carefully, wondering if she could say a word or two. After all, she was a tester, and she had a lot of experience in various aspects.
You still have a lot of say in the cause of this problem.
In the end, everyone came to the conclusion that they should adjust the welding process and make little adjustments to the temperature, voltage, current and other factors during the welding process.
This is the stupidest method, but also the most effective method. After all, welding materials cannot be changed. It is difficult to find a welding material that meets the standards. If you change the welding materials again, I am afraid that everything you have done before will have to be repeated.
.
"Okay, let's follow this method and experiment little by little!" Zhao Jingfu finally made the decision.
Having a stable current and voltage during the welding process is very critical for welders. If the current is too large or too small, it will cause various problems during the welding process, such as incomplete penetration, slag inclusions, pores, etc.
This time they have to actively adjust the current and voltage, which is a great test for the welder's skills, especially when controlling the welding speed, they must be careful, otherwise it will affect the entire welding quality.
Zhao Jingfu assumed the role of demonstration without hesitation. After adjusting the current intensity, he began to verify the experimental steel plate. As expected, the adjusted current intensity was too small and the arc was extremely unstable. Even for Zhao Jingfu, a welding expert, it was very difficult.
control, let alone other welders.
Zhao Jingfu took off his goggles, waved his hands at the workers, took a breath and said: "Wait a moment and continue to adjust!"