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Chapter 46 Xiaolin, why didn't you attend the meeting

sheet metal workshop.

When everyone arrived, they didn't intend to go to the meeting room for tea and rest, and went straight to the production site.

All preparations are underway immediately.

First prepare the water tank. There is a large water tank in the cleaning room of the sheet metal workshop. The length, width and depth are more than 1.5 meters. There is no problem in putting the burner casing in it.

Relevant tooling was also gradually prepared, and not long after, the first combustion chamber casing was shipped over.

Without further ado, start the inspection of the fault location immediately.

According to the method proposed by Lin Feng, the other parts of the combustion chamber casing were all blocked, and an air pipe was connected from the fuel pipe port, and air at two atmospheres of pressure was introduced.

"Lin Gong, what do you think, is it all right?"

Hao Jiang, the technical director of the sheet metal workshop, looked modest and asked Lin Feng humbly.

In normal times, it would be completely impossible. The technical director is at least a leader, belonging to the level of the workshop leader, and Lin Feng is just a newcomer who has been working for three years.

That's how it is now, people ask for advice with an open face.

This face is simply awesome!
Lin Feng felt extremely comfortable in his heart, but he didn't show anything on his face, and said politely, "Director Hao, you are too polite, I think there should be no problem."

No problem, then hang the combustion chamber casing into the pool.

In everyone's eyes, the combustion chamber casing was hoisted and slowly sank into the pool. Gradually, the water surface covered the entire combustion chamber casing.

"Look!"

"Really, there are really bubbles coming out!"

Seeing a string of bubbles coming out of the water, everyone cheered up, and the bubbles really popped up just as Lin Feng said.

Wang Tian felt relieved, and said loudly, "Remember the location of the bubbles, and mark them later."

The combustion chamber casing was hung out from the pool again, and someone immediately marked the position where the bubbles appeared just now with a marker.

Not long after, the casings of the second and third combustion chambers were also brought over. Following the same method, the position of the bubbles from the two casings was also determined.

"My god, it's all in the same position."

"It is basically certain that there is a problem with the welding part of the lubricating oil pipe and the lubricating oil hole of the turbine bearing seat in the casing."

"Most likely there is a crack in this connection part, maybe it is a welding quality problem, it should be a fatigue crack."

Wang Tianfang carefully looked at the marked position of each combustion chamber casing. After looking at it for a long time, he frowned slightly. This part is not easy to repair.

Welding cracks have occurred, and there is only one way to practice, that is to re-grind and re-weld.

But there is a problem. The part where the crack appears is inside the casing. If it is welded, it needs to cut a hole at least ten centimeters in size.

Just like a patient, after the diagnosis, an incision needs to be made for surgery, otherwise, the doctor cannot perform the surgery.

a long distance away.

Air Force base.

A Yun-[-] plane is returning, and there is a long exhaust behind each engine, four engines, a total of four.

Careful people will find that the color of the exhaust of one of them is much darker. Under normal circumstances, the exhaust is faint, but the color of this exhaust is black, which is obviously different from the other three exhausts.

The plane landed, and after taxiing for a certain distance on the runway, it drove slowly to the designated location, and the ground crew came over quickly.

One of the pilots said, "One of the engines has abnormal oil consumption and needs to be checked."

"What engine number?"

"Engine number three."

After about half an hour, the engine had basically cooled down, and several ground crews, as well as the field personnel of the Phoenix Factory stationed at the air force base, opened the hatch of the No. [-] engine together.

As soon as the engine hatch was opened, the turboprop six engine inside was displayed in front of everyone without reservation.

"Xiao Liu, take a look at the condition of the oil tank."

Xiao Liu stood on tiptoe, looked at the scale on the engine oil tank, and said in surprise, "Good guy, it's missing a big mark, and the oil consumption is obviously abnormal."

"Really, it's missing a big grid."

Several other ground crews and outfield personnel also looked at the situation of the lubricating oil tank, and they were all surprised. This kind of consumption is not common, and it belongs to excessive lubricating oil consumption.

"Can you troubleshoot on the spot?"

"Let's try it first. If it doesn't work, I guess we can only remove the engine and return it to the factory for troubleshooting."

The ground crews and field technicians gathered around the engine to conduct various inspections, and even dismantled the lubricating oil pump and the lubricating oil tank.

the next day.

As usual, Lin Feng walked into his exclusive office and turned on the computer. If there is no CNC program to be compiled, he usually codes first.

So, Lin Feng sat in front of the computer and tapped on the keyboard, continuing to write "Those Things in the Ming Dynasty".

It is good to have a private office, no one disturbs, "Those Things in the Ming Dynasty" has already written tens of thousands of words, plus the [-] words sent out, it is already seventeen or eight.

The manuscript has been sent out for several days. The editors of the publishing house should have received it. Have they read my manuscript?
After only writing a few hundred words, Lin Feng thought about the problem of the manuscript that had already been sent, and then started to type again. It is useless to worry and impatient now, and he can only wait patiently for the news.

Factory office building.

in the conference room.

Wang Tianfang once again organized a special technical coordination meeting, focusing on the repair of the three combustion chamber casings.

"Comrades, the faulty parts of the three combustion chamber casings have been checked out, all of which are in the same position, and the three combustion chamber casings are also from the same batch. Today we have to come up with a repair plan. Time is waiting for no one. !"

The military only gave me five days, and one day has passed. Even if a repair plan can be come up today, repair work will still be carried out next.

After the combustion chamber casing is repaired, the final assembly of the engine is required, and then the inspection and test run is required, which will take time.

It may be too optimistic to come up with a repair plan today.

A professor-level senior engineer who participated in the meeting said cautiously, "Mr. Wang, I carefully looked through the overhaul manual of the turboprop six last night, and there is no repair content in this aspect at all."

The overhaul manual is very detailed, a thick volume, all possible failures are mentioned, and there are a series of technical requirements for how to check and how to repair.

If there is no repair content in this aspect in the overhaul manual, it will be troublesome.

"Then what should we do? We don't even have a guiding technical solution. Are we going to cross the river by feeling the stones and slowly make a series of attempts?"

"Try slowly, I'm afraid it will be too late. The military only gave us five days. Including today, it will only be four days if we are fully prepared."

The time was so tight and the maintenance plan was so difficult, everyone felt tremendous pressure.

After listening to everyone's speech, Wang Tianfang looked a little dignified, looked around the entire conference room, was slightly taken aback, and asked.

"What about Kobayashi, why didn't you attend the meeting?"

(End of this chapter)