In the five-axis automatic machining center, the tool completed the last cutting operation, and was slowly recycled and returned to the position under the control of the control components.

Zou Yongdong opened the sealed reinforced glass cover and took out the processed small engine cylinder.

On the trolley beside you, there are five identical cylinders. The surface of the cylinder that has been processed through three processes is smooth and shiny. When you touch it, you can hardly feel the traces left by the tool. It is even more rounder than many workpieces that have to be polished.

"This is the eleventh day, so I'll push these to hone them first. You'll put them aside later and I'll collect them!" Footsteps sounded, and a technician from Guanfei Laboratory came close to him and happened to see him take off the finished engine cylinder. He immediately said happily and was about to push the cart away.

"good!"

Zou Yongdong was still as taciturn as ever, focusing on his work. After a nod, he continued to pick up a piece of metal blank and prepare to process the next cylinder.

"By the way, the front line is fighting. The commander asked us to prepare more and do as much as we can. So you will work harder these days and strive to make fifteen!" The technician was about to leave, but suddenly stopped and turned around and said seriously to him.

"I understand!" Zou Yongdong nodded and said that he had received it.

He not only planned to finish fifteen cylinders before finishing work. Since the commander asked them to reserve more, then do as much as possible. He calculated that by twelve o'clock in the evening, he could do seven or eight more. Anyway, a lot of work is operated by the machine tool itself, and it is not tired at all, so he just keeps doing it.

The radio station has been broadcasting news of the front-line victory these two days, which shows that everyone is working very hard, so for him, he can't lose his links!

He quickly installed the blanks into place, carefully measured the position, then closed the explosion-proof door, pressed the start button, and started processing.

...

The technician pushed the trolley to the honing workshop in the upper right corner of the workshop.

It is said that it is a workshop, but it is actually a honing machine with an integral seal. The interior is completely sealed, and the cleaning operation and the movement of the machine are all automated. The operator only needs to fix the workpiece waiting for honing with a fixture, and accurately position it through internal laser measurement, electronic measurement, and optical measurement devices, and then enter the program to perform automatic honing operation.

During this period, everyone is working to make drone engines, and all the data has been entered and does not need to be adjusted.

The technicians fixed the cylinder and pressed the button to automatically retract the base and the dustproof glass cover would also be automatically closed.

The laser measuring devices, optical devices and electronic measuring equipment in this era are still too large. If placed outside, it takes up space and is easily touched by passing people, vehicles, and objects. Therefore, it is made into a whole with the honing machine and sealed with an outer shell, which can also reduce light and electromagnetic interference and improve measurement accuracy.

At the same time, it can also prevent dust and moisture, and extend the service life of the equipment.

Honing operations are much simpler and more reliable than the processing center. After starting the machining switch, he installed the honing cylinder on a trolley, pushed the cart out of the workshop, and entered the heat treatment workshop on the right side of the laboratory building.

In addition to the traditional heat treatment furnace, there are also a variety of heat treatment equipment such as high-frequency furnaces, medium-frequency furnaces, salt bath nitrogen-carbon oxyseptolerant furnaces, gas nitrogen-carbon-boron co-permeable furnaces, etc.

Heat treatment is a process that uses high-temperature molecules to change the metallographic structure of metal parts to make the internal stress consistent, or to make specific positions more closely tied to improve a certain characteristic.

In modern heat treatment, other elements with a certain proportion were added to the metal when the heat is heated up, and other characteristics have been further developed by sprinkling carbon powder or other materials and placing them in a high-pressure nitrogen-containing treatment furnace to improve the surface strength, wear resistance, impact resistance and other characteristics of the metal parts.

The engines they processed were themselves star piston structures from World War II, and the strength requirements were not too high. Moreover, the metal ingots processed were special alloys smelted by the military sub-district, which were better than the aviation engine materials currently used abroad, and there was no need to do too complex heat treatment and strengthening.

So the technicians just sent the cylinder to the high-frequency and high-pressure nitriding carburizing furnace, and after handing over to the other party, they went back to do their own thing.

During this period, the heat treatment workshop has heated a large number of cylinders of the same model hundreds of times and understood how to deal with these cylinders. They opened the high-frequency furnace, placed the cylinders on the high-temperature-resistant ceramic chassis as required, and then closed the furnace door and pressed the start switch.

The biggest feature of Guan Fei's own laboratory is that it has a very high degree of automation. Anyone he thinks that a certain process can be automated will be transformed by him. Therefore, even if the researchers and technical workers in the laboratory are not the best, they can steadily complete the processes they are responsible for on the basis of ensuring quality.

After vacuuming, nitrogen is started to be injected into the gas in the high-frequency furnace until the gas pressure in the furnace rises to 10 megapas.

Then the high-frequency unit began to work and electromagnetically resonated the ceramic disc where the workpiece was located. In just ten seconds, the surface temperature of the workpiece increased to more than 1000 degrees. Under the huge pressure of ten megapas in the furnace, nitrogen began to slowly penetrate into the surface of the workpiece, and at the same time, carbon powder began to sprinkle in the furnace. Some of the carbon powder adhered to the surface of the workpiece, and fused with the metal on the surface of the workpiece under high temperature and high pressure to form a thin layer of high carbon shell, and the stiffness became higher.

During the entire automatic operation, the gas detector, infrared detector and other measurement equipment built in the high-frequency furnace are also monitoring internal changes at any time and transmitting relevant data back to the processor. The processor compares these data with the required temperature, air pressure, and toner quantity, and controls the electromagnetic unit in an extremely subtle way to release the carbon powder, so that nitriding and carburizing are maintained within the allowable error.

The high-frequency furnace can only heat the surface of the workpiece and cannot penetrate deep into the inside, so it ends very quickly. After half an hour, the nitriding and carburizing operation was completed and the cooling and pressure reduction began to slowly reduce.

The physical indicators of this batch of cylinders are already very good and do not require too high heat treatment processing.

The cylinders that have completed the heat treatment are sent together with the pistons, sleeves and other workpieces for heat treatment, and are sent to the assembly workshop for assembly.

Here, there are numerous parts such as bearings, connecting rods, gears, concave teeth delivered to process by various processes, each of which is shiny, like a work of art.

More than a dozen technicians were so busy that they counted the number and variety of parts sent from the heat treatment workshop, outlined them on the handover list, signed their own names, and immediately sent the parts. Others quickly surrounded them and assembled them with other parts.

On one side, there are more than twenty pocket piston engines that have been assembled and have passed the inspection.

Here, people came to the assembly workshop. They completed the handover with the assembly team with decisiveness and pushed the assembled engine to quickly send it to the assembly.

In fact, there are fewer people around the assembly workshop than in the engine assembly team, with less than ten people.

However, these ten people included multiple groups such as aircraft models, engines, electrical controls, navigation, etc. They surrounded the assembly table and stepped forward in an orderly manner, each completing their own assembly part.

However, unlike the assembly of the drone, the ******* assembled this time did not install cameras, cameras and other reconnaissance equipment. Every time other teams complete the assembly, they will use a battery car to pull the drone out of the workshop and send it to a cement pit with a depth of five meters.

Then a staff member carefully placed a steel box that was fifty cm long, thirty cm wide and fifteen cm high into the internal space of the machine with his hands and feet, and fixed it with screws. Then he used a plug-in line, connected one end to the control panel, and inserted the other end into the socket on the side of the steel box.

When he inserted the control cable, everyone else hid outside the cement pit, and it seemed that there was a man-eating beast hidden underneath.

The staff member who installed the steel box was also very careful. He put every movement to the slowest and gentlest way, for fear of misoperation, and would detonate the steel box.

That's right, this steel box is filled with high explosives, and thousands of steel beads are embedded in the interlayer.

They have tried that the shock wave of the explosion of this steel box can cover hundreds of meters, and the steel balls in the interlayer can even fly one kilometer away and can penetrate a tree trunk with a diameter of ten centimeters!

If this guy accidentally detonated, he would not even be able to keep his entire body. How could he be better than facing a great enemy!

Although it was just a simple task to put the steel box into the belly of the machine, fix it, and insert the ignition cable, every movement was extremely gentle, which was even gentler than to his wife. After completing the entire installation work, he was already sweating all over. After repeatedly confirming that the steel box was firmly fixed and there would be no shaking. After it fell off, he breathed a sigh of relief, closed the belly cover and put the screws on.

When he came out from below, the others entered the pit and used an electric car to pull the drone up. Several technicians ran forward and backward to remove the stones blocking the road ahead. They were afraid that the terrible guy would explode unexpectedly due to the bumps.

Although everyone knows that it is very reliable, many tests have proved that the charge inside is very stable. If it is not detonated by electric power, it will not be destroyed even if it is swung the hammer. The circuit is also reliable, and there has not been a single malfunction so far.

However, but everyone is still afraid!

The power of this thing is too great. Even if you know it is fine, you will stay away from it when you think of the big pit about ten meters wide and two meters deep formed after the explosion. Besides, even if it is not within the range of its explosion, you don’t want to be beaten to pieces by thousands of steel beads and turn into a pile of rotten meat.

The tractor car uses a slower speed than walking and pulls the drone to a cement square.

Here, more than fifty similar drones have been parked. In order to avoid them from exploding, they have built reinforced concrete walls two meters thick and twelve meters high around them to protect them. Only a ten-meter-wide door was opened on the protective wall. The door was made of steel plates about one meter thick, and rollers were installed below to slide left and right. However, if the motor was not driven by a motor, the steel door weighing more than ten tons could not be pushed by manpower.

...

The sky gradually became dark and it was getting dark.

The headquarters of the military sub-district was empty, and the main force jumped to the outside line with Guan Fei to fight. The three left-behind battalions also went to Longkang, Kangka and Guogen for defense respectively. There was only one guard company in the entire battalion.

There was no lively scene of people shouting and neighing in the wide training ground, and the windows on the upper floors of the three-story barracks of each company and battalion were closed.

The lights of the camp began to light up one by one, and the guards stationed at the headquarters carried live ammunition and ran into the training ground. Under the orders of the platoon leaders at all levels, the soldiers quickly spread out to both sides with the wide main road of the camp as the center, retreated two hundred meters away, and pulled up a cordon, and no one was allowed to approach.

Today will be destined to be a sleepless night.
Chapter completed!