With nothing to do, Li Xiang walked to the assembly workshop of China Machinery Company. Pen? Interesting? Pavilion wWw. ｂiquge。 ｉｎfo

The assembly workshop of China Machinery Company is mainly responsible for assembling the machine body processing workshop, that is, the processing workshop one, the processed body, as well as the cylinder head, connecting rod, crankshaft and camshaft processed by the second processing workshop, to form an engine preliminarily.

The reason why it is said to be a preliminary formation is because the assembled engine cannot be directly installed on the whole machine, and it still needs to be tested.

Looking at the body, cylinder head and other parts produced by the processing workshop, assembled by the workers one station at a time, and finally assembled together, Li Xiang watched with relish.

Working in an engine company, it is not only possible to master the technology of body processing, but also to have a comprehensive knowledge of the engine, including assembly, testing, and even vehicle matching and maintenance services.

At this time, Li Xiang was standing on the process of adjusting the valve clearance, and saw the operator holding a screwdriver in one hand and a feeler gauge in the other, adjusting one valve and one valve.

The valve clearance of the engine produced by China Machinery Company is: intake valve 0.3mm, exhaust valve 0.4mm, and the adjustment must be carried out in a certain order.

At noon, Li Xiang hurriedly went to the canteen for a meal, one meat and one vegetable, two steamed buns, and a big pot of rice, the taste was very average, but it was enough.

Li Xiang's technical quality department worked at half past one in the afternoon, but the working time in the workshop was one o'clock, Li Xiang had some time to rest, but in order to learn more, he went directly to the workshop.

Li Xiang looked down from process to process, and with the help of God's eye, Li Xiang was able to quickly remember the requirements of each process.

"Eh, isn't this Li Xiang? I don't rest at noon, why did I come to the workshop? ”

Hearing someone shouting his name, Li Xiang turned his head and saw Wang Guangtai, the director of China Machinery Company.

Li Xiang hurriedly walked over and said with a smile: "It turned out to be Mr. Wang, I came here to learn the knowledge of assembly and understand the structure of the engine." ”

Wang Guangtai nodded and said, "Very good, young people should learn more knowledge while they have time, otherwise they will be entangled in trivial matters at work in the future, and they will not be able to spare time to study." ”

Li Xiang nodded, he naturally understood this truth, just like Su Qicai and Su Gong in the office, busy with meetings all day long, busy with some so-called big projects.

Some practical problems, such as online measurement, Su Qicai is not unable to do it, but he doesn't have time to get it, so it has been delayed until now.

It was precisely because of these problems that Li Xiang did not hesitate to sacrifice the time of the lunch break to "recharge" himself in the workshop.

"Oh no, no, there is another leak over the test drive, and I'm looking for a problem." One of the operators said.

Wang Guangtai and Li Xiang also heard it, and Wang Guangtai said to Li Xiang: "Li Xiang, are you interested in going over and having a look?" ”

Li Xiang nodded and said, "Okay, I can just learn how to troubleshoot." ”

So, Li Xiang and Wang Guangtai walked to the test workshop together.

The test workshop and the assembly workshop are actually connected together, and the engine does not need to land through the hook, but directly goes to the test workshop, which is very convenient.

At this time, the leaking engine had been hoisted off the engine test platform and transferred to the repair area, and a trace of black smoke was emitted from time to time, waiting to be dismantled and inspected.

Wang Guangtai, as the director of China Machinery Company, is still very eye-catching, and Xu Changjian, the squad leader of the test rework class, immediately ran over and said with a surprised face: "Mr. Wang, why are you here?" ”

Xu Changjian was quite shocked at this time, this engine leakage is a big quality problem, is it even the director of the company who is alarmed, impossible?

Wang Guangtai smiled and said, "It's nothing, I happened to be passing by here, and I heard that there was an engine leak here, so I stopped by to take a look." ”

Hearing Wang Guangtai say this, Xu Changjian breathed a sigh of relief, as long as it wasn't specifically for them, but the big leader was still a little nervous.

Wang Guangtai walked forward with Li Xiang and asked Xu Changjian: "Xu Ban, what is the reason for this engine leakage?" ”

Hearing Wang Guangtai ask himself, Xu Changjian looked embarrassed, originally the leader asked a question, which was a good opportunity to perform, but Xu Changjian really didn't know the reason, and he couldn't speak.

Wang Guangtai saw that Xu Changjian couldn't say it, and he knew what was going on, so he stood aside with Li Xiang and watched the repaired operator disassemble and inspect the engine there.

The operators are very skillful, and they use wrenches to loosen various bolts and disassemble various parts installed in the assembly shop.

When they dismantled and inspected the engine, Li Xiang squinted his eyes and stared at the engine, giving full play to the perspective effect of the divine eye, and after a while, Li Xiang found out where the water leak was.

It was in the cylinder head of the second cylinder of the engine, and a trace of water line passed through the water cavity hole into the cylinder liner, causing the diesel to mix in water and emit black smoke when it was burned.

Could it be that the underside of the cylinder head is uneven? Or is there a problem with the cylinder head gasket? Li Xiang made an analysis in his heart.

However, through the observation of a pair of divine eyes, Li Xiang did not find that there was a problem with the bottom surface of the cylinder head, and the roughness could definitely reach RA0.8, which was far better than the process requirements, and the parallelism was 0.02, which also met the requirements, so it was not a problem with the cylinder head.

As for the gasket, Li Xiang didn't see the problem.

So what's the problem? Li Xiang continued to look, and suddenly, he found that there was a problem with the bolt of the cylinder head, and there was a crack in one of the four bolts of the second cylinder head!

It was this crack that caused the cylinder head to loosen during the test run after the cylinder head was closed, allowing the water in the water chamber to penetrate into the cylinder liner.

At this time, the cylinder head of the engine has been dismantled by the reworkman, and an obvious waterline at the second cylinder appears in front of everyone's eyes.

Xu Changjian immediately said: "It seems that there is a problem with this cylinder head, Mingde, you take this cylinder head to the three-coordinate measuring room and measure his parallelism." ”

A young reworkman on the side took the cylinder head, pulled out the bolts on it, and left.

Wang Guangtai asked Li Xiang on the side with a smile: "Li Xiang, what do you say is the reason for this water leak?" ”

Li Xiang thought for a while and said: "Xu Ban also said just now, the biggest possibility is that the parallelism of the bottom surface of the cylinder head does not meet the requirements, resulting in water leakage. However, it could also be the cause of the gasket; Another is the reason for the closure of the cylinder head. ”

"It can't be the reason for the combination, if there is a problem with the combination, it will definitely be checked in the assembly workshop." Someone said.

Li Xiang smiled slightly, pretending to inadvertently pick up the bolt left by the young repairman just now, and suddenly pretended to be surprised and said, "Huh? You see, there's a crack in this bolt! ”

ps: I left my relatives today, but I didn't drink, hehe. Ask for a collection ~ ask for a recommendation ~