The eighth day of the first lunar month.≥≥,

All employees of Tianfeng Technology Company officially went to work. On the first day of work after the Spring Festival, the entire Tianfeng Technology Company was in a festive mood, and everyone could feel the strong festive atmosphere.

At the gate of the company, big red lanterns were hung high, and long huge red banners and flying colorful flags completely set off the whole festive atmosphere. Li Tianfeng, Sun Kang and others stood neatly at the gate to welcome the employees to work on the first day.

The employees at work clearly felt this joy. Everyone was happy and inspiring, and walked into Tianfeng Technology Company in groups in groups.

At 8:08 in the morning, fireworks were blooming, and the whole work celebration was pushed. This year, in order to have a good start, I hope that my first engine would come out smoothly, Li Tianfeng spent more than 100,000 yuan to buy a large number of fireworks and firecrackers.

According to the convention, in the morning, Li Tianfeng, Sun Kang and others visited various departments of Tianfeng Technology. In the afternoon, Li Tianfeng had to visit Zhu Maohua, Yang Xianfeng and others at the e-factory. This is a custom of the Chinese people, and Li Tianfeng cannot avoid the custom.

For the employees, in addition to clearly feeling the festive atmosphere and feeling happy, everyone also hopes to get a big red envelope today.

"Old Zheng, remember that the red envelope last year was 600 yuan. I wonder how much it is this year?"

"Old Zhang, according to his boss' generosity, this year will only be more or less."

Many old employees of Tianfeng Technology still remember the thick red envelopes last year. Last year, they received such red envelopes and were happy for a while.

In cities like Songzhou, general companies go to work on the first day after the Spring Festival. Even if they send red envelopes to their employees, they are often mostly 100 yuan. Companies that send red envelopes of 200 yuan are considered polite, and a few stingy companies send red envelopes of 50 yuan and don’t even send red envelopes.

Some new employees, listening to some old employees happily talking about the red envelopes last year, became excited immediately.

I saw a young employee gently pulling an old employee and whispering: "Lao Zhang, did you really send a red envelope of 600 yuan last year?"

Old Zhang waved his hand and said happily: "No. Last year, the red envelope was filled with six red 100-dollar bills. It looks so comfortable. Old Zhang was happy for a whole week after receiving the red envelope."

"No, I am the same. I have been happy for several days, and I am full of energy when I go to work for several days in a row." Another old employee next to me said.

Suddenly, many employees were looking forward to it!

His own department manager walked into the big office and saw that everyone was talking about red envelopes. He couldn't help but smile, waved his hand, and said happily: "The red envelopes are here, everyone has a share."

Seeing that his manager was holding a large stack of red envelopes, everyone immediately surrounded him happily, looking at the red envelopes in his manager's hands with their eyes shining.

The department manager was very happy like everyone else. He took out a list and said loudly: "Sign up a name and get a red envelope. Come one by one."

Suddenly, everyone came up to sign one by one and happily received their red envelopes. Some employees immediately opened the red envelopes and drew out a thick stack of red hundred-dollar bills from it.

One, two, three...

"Wow, I've got rich, I've got rich!!!"

"Wow, the total amount is 800 yuan. Two hundred more than last year!"

A young beauty wearing glasses opened the red envelope, jumped up happily, and exaggeratedly said: "The boss is so generous, I like it! I love you so much!"

There are currently more than 3,000 people in Tianfeng Technology. Everyone has received a big red envelope of 800 yuan regardless of jobs or jobs. Many employees are grateful to Li Tianfeng and are full of vitality and motivation when working.

After the New Year, Tianfeng Technology opened happily under such circumstances, and began this year full of hope. According to the plan, Li Tianfeng will assemble his first verification machine this year and conduct a series of verification test drives.

After a good start, more than 3,000 employees of Tianfeng Technology were full of passion and enthusiasm, and all work was carried out in an orderly manner. In just one or two days, everyone was completely in the working state, and the workshops were also busy and full of enthusiasm.

………

Tianfeng Technology, assembly workshop.

In the current assembly workshop, all hardware facilities are in place, and even the turbine shaft engine assembly bench has been installed. Because the turbine shaft is not big, the assembly bench is not big, and it is not complicated, the progress is relatively fast. Now, all ten assembly benches are completed, and the assembly operation can be carried out at any time.

Of course, before the engine assembly, each component needs to be assembled. After each component is assembled, the assembly bench will be put into the assembly mount one by one for the overall assembly of the engine.

The assembly of each component is naturally carried out in the assembly workshop. There is a special component assembly area for the "tz001" type turboshaft engine, and then the assembly area. There are a total of ten assembly benches for the "tz001" type turboshaft engines in the assembly area.

The assembly workshop is very large, much larger than the No. 1 and No. 2 workshops, etc., covering an area of ​​more than 18,000 square meters, which is very domineering.

The huge assembly workshop is spotless. This is a dust-free assembly workshop, with constant temperature and humidity. The smooth floor can reveal people. When you enter the workshop, you have to change your shoes and wear snow-white cotton slippers.

The component assembly area, assembly area, and part inspection area of ​​the "tz001" type turboshaft engine also accounts for less than one-third of the entire huge workshop, and the remaining area is empty.

These empty areas are tens of thousands of square meters, which are reserved for the assembly of other engines in the future. Tianfeng Technology cannot only develop and produce the "tz001" aircraft engine, and there may be turbofan engines in the future.

In such an empty area, just kidding, there is enough room for employees in the assembly workshop to hold a full-staff sports meeting.

The assembly workshop is put into use, and some components of the "tz001" type turbine shaft engine can also be assembled, and some employees are assembling parts, such as turbine rotor assembly, combustion chamber assembly, compressor assembly, etc.

The accessories inspection area is not small in size. Large inspection work tables are arranged neatly. This is a professional inspection work table. Each table has a thick layer of green rubber, which can prevent the parts from scratching.

Before aero engine assembly, a large part of the inspection work is absolutely different from general mechanical assembly.

The general mechanical product assembly we have seen is usually to receive qualified parts and start assemble them when they are held, and they are always assembled into mechanical products that meet the requirements. However, the assembly of aircraft engines is definitely not that simple.

Even if you receive qualified parts, you must not assemble them immediately. Before assembly, there is a lot of work to be done.

Inspection work is one of the important tasks. After the production task is issued, the deliveryman will deliver all parts and accessories to the inspection area, and the inspector will start his own work.

First check some assembly dimensions of the parts again and measure the actual measured values. Of course, non-assembly sizes are generally no longer repeated measurements. After the measurement is completed, you must perform the selection, because some parts have strict requirements for matching, and it is definitely not possible not to perform the selection.

Li Tianfeng came to the assembly workshop in person today and replaced it with special snow-white cotton slippers at the entrance of the assembly workshop door. The shoes were light and thin, and they were very comfortable to wear.

Although the assembly workshop did not meet the high standards of electronic product assembly, it also had its own dust-free requirements. Put on clean cotton slippers, Li Tianfeng walked into the assembly workshop.

When I entered the assembly workshop, the first thing I saw was that the workshop was very large, very large, with a length of nearly two hundred meters and a width of nearly one hundred meters. It looked very domineering and very grand.

Li Tianfeng nodded with satisfaction and walked into the assembly workshop. He saw that some workers were already working and some accessories were delivered to the assembly site, and the preparations were done well.

Walking to the accessories inspection area, Li Tianfeng saw an inspector measuring the journal of a turbine shaft. Next to it, there were several bearings. The bearings will be assembled on the turbine shaft, and the assembly part is the journal of the turbine shaft.

These bearings are purchased from domestic professional aviation bearing factories. One aviation engine has tens of thousands of types of parts. Tianfeng Technology cannot produce all parts by itself. On the contrary, many parts are purchased from home and abroad.

Li Tianfeng looked aside and saw that the actual size of the inner holes of these bearings was measured, and it was accurate to three positions after the decimal point, which was one thousandth, and the measurement of the shaft journal was basically the same.

There is an assembly relationship between the two. The assembly drawings require interference coordination, with interference amount of 0.006 to 0.015, which is relatively strict. Interference coordination, in layman's terms, means that the holes and shafts are assembled to have a certain tightness.

This tightness is not good enough, nor is it small. It has strict requirements, especially for aircraft engines, which have very strict requirements, such as the above-mentioned assembly of bearings and turbine shafts, with interference amounts of 0.006 to 0.015, which is very strict.

Even if it is very strict, you should try to make the selection and matching as much as possible. The best way to achieve the medium difference is, such as the above interference amount is 0.006 to 0.015, and the best is around 0.010. This requires choosing the bearing and turbine shaft. After choosing, pair it, and then assemble it by the assembly worker.

Li Tianfeng did not express his opinion, stood aside, and just greeted the inspector simply. Then, watching the inspector work, Li Tianfeng also took a look at how the inspector was selected and whether it was selected according to the difference, and the matching interference amount was selected at around 0.01.

………

The third update will be given today!!!
Chapter completed!