Xinghai Group has secretly developed a military afterburning turbofan engine, which is difficult for the outside world to know.

The aero-engine R&D personnel have been tested by Muyang for their loyalty and will only start the project after ensuring that there are no problems.

The engine fan is a 3-stage axial flow type, and the compressor is a 6-stage axial flow type. They both adopt an integral blisk structure and are manufactured using a metal 3D additive process.

Today, Xinghai Group owns a total of 700 metal 3D additive equipment, receives OEM orders from all over the world, and has an annual output value of US$6 billion.

In order to manufacture large structural parts, dozens of large-size metal 3D additive equipment are customized. One of them has a maximum processing range of ten meters, a width of up to six meters, and a height of more than four meters.

In order to place and ensure the stability of processing, it cost hundreds of thousands of yuan to build a reinforced concrete foundation on the first floor of the workshop, and it was also necessary to ensure that it was a clean and dust-free workshop.

During this time, Mu Yang has been staring at Jun's afterburning turbofan engine.

Time flies by.

By mid-May, fans manufactured using metal 3D additive processes were manufactured.

Mu Yang was wearing dustproof clothing and walking in the clean workshop, observing the integrated fan that had just been processed. There were also personnel from the engine project team on site checking the dimensions.

"How is it? Are there any problems with RT flaw detection and UT flaw detection?" Mu Yang rarely cares about manufacturing details, but sometimes when he is anxious, he will go to the manufacturing center to see it in person.

In order to detect whether there are pores, looseness, cracks and other problems inside the fan material, RT radiographic flaw detection + UT ultrasonic flaw detection are required.

RT flaw detection and UT flaw detection both have blind spots and their own shortcomings. UT scanning is to detect the blind spots of RT, so for extremely demanding flaw detection, a combination of the two is used.

But no matter what, RT and UT cannot be measured such as material unit cell size detection.

"We have inspected it, Chairman. There are some areas of the fan blades that cannot be inspected with UT. Judging from the results, no defects were found, and the manufacturing is still very stable." The inspector is very proud. The company's metal 3D additive equipment is really awesome.

.

An integral blisk structure weighs hundreds of kilograms and costs millions of yuan to manufacture. However, if there is a defect in one position and does not meet the design requirements, the entire workpiece will be scrapped and there will be no way to repair it.

In the case of Xinghai Group, the raw material requirements for manufacturing such large components are very demanding.

The powder used for cladding of metal 3D additive equipment is manufactured by Xinghai Group. If you use powder from other companies, it may not meet the requirements.

From raw materials to manufacturing, every manufacturing process is extremely difficult, and there is no room for mistakes. You must get a perfect score, even 99.5 points is not enough.

This is why Mu Yang is very concerned about this matter.

An advanced afterburning turbofan engine for military use costs tens of millions of dollars. The main reason for its high price is the high cost of research and development and the high cost of production and manufacturing, but at most it costs two million dollars.

"I know that if the thickness is less than 8 millimeters, there will be a blind spot when using UT detection." Mu Yang nodded to express his understanding. If the inside is hollow, it is not convenient to use flaw detection methods, which brings great trouble to the inspection.

"Yes, there is no more advanced detection method at present. For example, it can automatically 3D scan, and any defects will be displayed on the computer, such as the depth and number of pores. Statistics and analysis can be carried out according to the standards set by oneself.

, it’s done in a few minutes.”

"Your idea is very beautiful." Mu Yang smiled, he also wanted to have this kind of equipment.

When the angle between the RT plane defect and the ray is not appropriate, there is a high possibility of missed detection;

Or the workpiece is too thick, for example, the thickness exceeds 200 mm, which requires a high-energy radiation source and the detection accuracy will also decrease.

Moreover, after the detection, the films need to be washed and dried, which takes at least half an hour. After the films are dried, they still rely on manual observation and analysis one by one, which is very time-consuming and may only be completed in one day.

The blades like XH-AN05-01J have a large area and require hundreds of pictures. RT alone takes two or three days, which is as time-consuming as taking pictures of hundreds of people in a hospital.

UT is very fast, just use the straight probe to scan, no matter how large the area is, it can be done in one or two hours.

Therefore, if you can use UT for flaw detection, you should rarely use RT to take pictures. Taking pictures is too troublesome.

This employee's thoughts also gave Mu Yang an idea.

After leaving the workshop, Mu Yang has been thinking about non-destructive testing.

He returned to the office and was thinking about this matter.

RT and UT are used for internal flaw detection of materials, while MT magnetic powder and PT penetration are used for surface detection of workpieces.

The slowest process is of course RT filming. If it can be done as the employee said, the efficiency can be increased a hundred times.

Generally, workpieces do not need to undergo non-destructive testing, and visual inspection is enough. Standard parts such as nuts and bolts do not require flaw testing, nor do non-critical workpieces such as automobile iron sheets, spot welds, and engine casings.

Only important stress-bearing parts and workpieces with high requirements are required to be inspected, such as high-speed running shafts, high-pressure pipelines, etc.

The parts manufactured by Xinghai Group have extremely high requirements, so the company has a heavy workload of flaw detection, with more than two hundred non-destructive inspectors.

Perhaps advanced flaw detection technology no longer requires so many flaw detection employees, but the flaw detection efficiency is faster and the inspection cycle can be shortened.

For example, an aerospace engine can shorten the production cycle by about five days.

At the same time, the research and development cycle can also be shortened.

Therefore, Mu Yang felt it was necessary to solve this problem.

The equipment developed may be worth tens of millions, or even hundreds of millions. Generally, companies do not have a large amount of flaw detection work, so there is no need to buy it, and ordinary flaw detection institutions cannot afford it.

Open the reading system,

open store,

Ordinary shelves,

Search for "non-destructive testing technology".

The system can search based on Mu Yang's ideas. If it cannot be based on Mu Yang's ideas, the search accuracy will be inaccurate, and there may be tens of thousands of technologies searched.

In an instant, dozens of non-destructive testing technologies appeared, all of which were internal testing.

After looking at it for more than two hours, Mu Yang finally found the technology he was looking for.

"3D all-round high-efficiency non-destructive testing technology"

Introduction: Multi-directional installation of detection equipment for fully automatic flaw detection, which can detect various material defects above 0.005 mm, automatic flaw detection, analysis, and statistical data. The scanning speed can reach 1 cubic meter/minute, and results can be obtained within two minutes...

Mu Yang took a brief look at the technical introduction. This technology is different from conventional flaw detection, mainly because the equipment is different and uses gamma rays.

gamma rays?

He didn't quite believe it.

Of course Mu Yang knew that gamma rays, which have stronger penetrating power than X-rays, can easily cause DNA breaks in living cells and cause cell mutations, loss of hematopoietic function, cancer and other diseases. They are generally used in medical equipment.

But if it is used to detect flaw in materials, the power will be greater and the radiation will be greater.

Mu Yang still has many doubts, such as the technical introduction is fully automatic flaw detection, how to adjust the focus, and how to expose.

So, after the workpiece enters the flaw detection room, how to distinguish the workpiece that needs to be inspected from the items in the surrounding environment? After all, the radiation is very penetrating and may irradiate other items, causing analysis errors. This is a very critical technical issue. How about Ren Muyang?

I can't think of any technology that can do it.

I really can’t figure it out, but looking at the technical introduction, I feel it’s very awesome.

The achievement point requirement is not cheap either, it requires 200 points!

Expensive!

Pour yourself a cup of tea and wander around the office.

If it were just a few dozen achievement points, he would buy it without hesitation.

After some thought, Mu Yang reluctantly bought it. Maybe he wouldn't make any money from it, but it could shorten the research and development cycle and testing cycle.

Time is also money!

Buy it!

absorb,

Ten minutes later, Mu Yang finished absorbing the new technology and roughly understood how it distinguishes the workpiece that needs to be inspected from the items in the surrounding environment, and how to prevent misjudgment.

First perform a 3D scan to confirm the scanned object.

During flaw detection, the workpiece is still visible and cannot be distinguished physically. Instead, it is analyzed through software.

The reason is very simple, by comparing the front and rear spaces in the inspection room.

To adopt this technology, it is necessary to build a radiation-proof flaw detection room, which is also built underground and automatically transports workpieces. The core is still software.

After figuring out the new technology, Mu Yang devoted all his energy to outputting data in the next two weeks.

Two weeks later,

Muyang handed the information to the company's engineering department and commissioned an outside construction unit to build a flaw detection room;

Other materials will be handed over to the manufacturing center. The production progress is not urgent and does not affect the production order. As long as it can be manufactured within two months.

Xinghai Group has many technical problems. If employees can solve them, Mu Yang will never get involved.

The company has grown to tens of thousands of people. No matter how good he is, no matter how cheating he is, he cannot solve all technical problems.

It's late May,

There is a news on the Internet that a Fujinan employee jumped off a building. It has caused quite a stir recently, and Mu Yang has also paid attention to it.

Xinghai Group, Human Resources Department.

Human Resources Director Lai Chunqin was also very concerned about this matter. He convened a meeting with the Human Resources Director and Deputy Managers to address the matter: "The incident of Fujinan employees jumping off buildings has been very popular recently. There are many reasons for jumping off buildings, and most of them are young people. Most of them can't see it.

There are also problems in the future, family, and relationships, and they do impulsive things out of frustration.

Our company has more and more employees. Although there have been no incidents of extreme employee behavior, we must also pay attention to the psychological quality of employees. The chairman often says that we should pay attention to humanistic care. I hope everyone will pay attention to it.
To be continued...