One Thousand Four Hundred Ninety-Eight Problems

"In fact, the production of this gun barrel is very difficult..."

"Now the method of electroslag remelting is mainly used to smelt the most basic materials."

Officer Zhang and Minister Li sang together and explained to Xiao Feng the general situation of our domestic artillery development.

Then began to explain in detail the sound field process of the barrel.

Needless to say, the two people's explanations opened Xiao Feng's horizons and gained a lot of insight.

It turns out that the gun tube steel was first smelted by electric arc to produce the first wave of rough billets.

This step is to extract molten steel from the ore, and after desulfurization and denitrification, it is cast into a steel rod with a diameter of about 30 centimeters.

Then there is the second part, electroslag remelting. We can understand this step as a large-scale electric welding process.

Those thirty-centimeter-diameter steel rods are equivalent to large welding electrodes.

These thick welding electrodes will be picked up by a giant mechanical arm, and then placed in an electroslag melting furnace for heating and melting, and then the melted molten steel will be specially treated to become large electroslag melting furnaces. steel ingot.

And this process often needs to consume dozens of steel bars from the first furnace of molten steel.

Steel rods after electroslag remelting generally turn into hexagonal prisms, and these prisms are basically two meters high and about one meter in diameter.

Each of these prisms weighs thirty tons or more. ,

Afterwards, this prismatic steel ingot will be put on a forging machine to be hammered, and this kind of forging machine starts with more than 30,000 tons of equipment...

In this process, the gun tube steel will be continuously forged, which will make the internal structure of the steel more compact. Only in this way can the gun tube steel be able to launch the high temperature and high pressure brought by the powder, and the high-speed friction brought by the projectile launch... …

After these steel ingots have been beaten in this way, they will become qualified gun steel blanks, and then holes will be drilled in the middle.

After drilling, there will be another secondary heating, followed by precision forging and elongation.

The equipment needed for this process is the rotary precision forging machine, which will stretch the rough billet of gun steel to the length of the barrel we want.

And this device,

In the past, it needed to be imported, and the price of each set was as high as tens of millions of dollars.

In recent years, until we were able to manufacture it ourselves, Europe and the United States did not relax the control on this kind of equipment.

We can only buy some of this equipment from Europe.

As for our domestically-made equipment, although it can be used, it is still an old problem. It is still not as good as European products in terms of accuracy, lifespan, and reliability.

However, although the performance is not as good as theirs, at least it can be used, and because of this, they will release the control, and the price is much lower than before.

And these are tolerable for the Army.

After all, although such equipment is expensive, we don't need to import too much.

We can also afford a tens of millions of dollars.

The gun steel that has completed this step is no longer a rough billet, but a fine billet.

However, a heat treatment is required next to make the internal structure of the billet more compact, thereby obtaining higher strength.

Then there is another process of straightening the fine blank. If this step is not carried out, the produced barrel will have a serious problem of insufficient precision.

Sometimes even hundreds of meters of 'secret position' deviation...

Only after completing this straightening process can the final steps be performed.

The next thing to be done is the self-tightening process.

To put it bluntly, an iron x-on:rod, called the corex-on:rod, is inserted into the inside of the barrel, and at the same time, liquid is injected into the barrel, and then high-pressure sealing is performed.

It is to let the hydraulic pressure change the internal structure of the barrel and eliminate the stress of the steel inside the barrel.

In this way, while the outside of the gun barrel remains elastic, the inside of the gun barrel can obtain higher strength to cope with the huge heat and impact brought by the firing of the propellant.

After completing this step, it is the last step of cutting and rifling.

And this step is often the hardest.

Because the deep hole processing technology is used, and the barrel is still very long.

Therefore, the inside of the gun barrel cannot be seen from the outside at all, and the internal situation can only be judged by the experience of the engineer.

Engineers will look at the rotation and vibration of the drill bit and the temperature of the cooling oil flowing out from the outside of the barrel to judge whether the cutting of the rifling inside the barrel is normal.

And every year, on our own, tens of thousands of tons of gun barrels are scrapped in this step.

So the price of a cannon can easily be several million. Do you think this is a random order?

If you understand the process of barrel processing, you will know that it really is not.

As for the army, the problem we are facing now is that although we have a lot of artillery.

But to be honest, the annual training is pitiful.

You must know that we are the country with the least actual combat experience among the five permanent members.

The combat effectiveness of our army can only be maintained by training.

And high-quality, high-intensity training is the key to our army's combat effectiveness.

But the problem is that our annual military expenditure is only so much, and now the country puts the main national defense construction energy on the navy and air force.

In recent years, the army has really been unable to let go!

Even though military expenditures have increased every year recently, most of them are used to improve the lives of soldiers and their daily equipment.

After all, the equipment of the American soldiers is already armed to the teeth, but we can't let the soldiers wear yellow rubber shoes on the battlefield, can we?

You said that bulletproof vests do not need too much equipment, but you should equip soldiers with a few pairs of military boots, right?

There is also training shoes, should they be updated?

Don't keep fooling people with the nonsense that yellow rubber shoes are traditional and comfortable to wear.

Who doesn't know that those shoes not only burn their feet, but the most important thing is that they smell so bad?

And wearing those shoes on the battlefield was really a helpless choice when we had no choice.

But now that the technology is so advanced, we are not so short of money. If soldiers are still allowed to wear yellow rubber shoes on the battlefield, it is a bit unreasonable.

Not to mention going to the battlefield, it is daily training, and the shoes are not enough to meet the needs.

There are endless problems such as sprained feet, pinched feet, and easy to hurt feet.

It is precisely because of the understanding of the difficulties of the soldiers that the army is now starting to talk about some outdated equipment and starting to retire.

It is also because it costs a lot to replace these materials.

So our speed of updating large equipment has slowed down, which is okay, after all, the threat from our border is not big now.

But the key is that high-quality training cannot be guaranteed, which has always caused headaches for the military.

As far as the army is concerned, let's talk about shooting training, how many troops can open up the supply of bullets, so that the soldiers can shoot to get the feeling?

If you look at the old beauty again, the soldiers practice shooting, and the supply of bullets is absolutely open, as if they don’t need money.

You said that soldiers fed with bullets in this way can have poor combat effectiveness?

There is also the artillery unit that we value most, but to be honest, the number of shells that these units can fire in a year can be counted.

We have no shortage of shells. After all, we have worked hard to build a lot in the past, and we haven't finished shooting them yet.

But the key is that we really can't afford to consume the barrel.

A piece costs hundreds of thousands, which is already a situation where the price is very low.

Especially in recent years, our artillery has been constantly updated.

Many of the original artillery have been eliminated and replaced with self-propelled artillery.

The integrated command and combat mode is adopted, which is simply radar, and an integrated fire control system is added to improve the shooting accuracy of the artillery unit.

But the problem is, your radar is advanced, and your drone can detect the enemy's target early, but this gun needs to be fired!

Have you seen how the Mi Army trains artillery?

For an artillery squad of several people, at least hundreds of shells must be destroyed in one training session.

But for us, if we go out for training once in a company, it is estimated that we can fire a hundred shells, which is not bad.

Every time it can be opened up, it is the kind of large-scale comprehensive military exercise that occurs once every few years.

So now the army is also very troublesome about the training of gunners. You didn't see those soldiers of the ordinary army, who can retire when they reach the limit.

But for experienced artillerymen, the military will do everything possible to keep these people.

Because experienced gunners are too scarce, especially to train a new gunner, it will cost hundreds of shells and several barrels to become an apprentice.

In order to change this situation, we have been working hard in technology manufacturing to solve such problems.

Since we can't be as rich as the United States, the training can allow soldiers to shoot at will, find out how to feel, and accumulate experience.

But we can make a fuss about precision!

It is exaggerated that the first shot must hit, but within three rounds, the error of the shelling range can be reduced to within the killing range, which is the goal we are pursuing.

So we first started to work hard from the aspect of viewing and description.

For example, the earliest artillery integrated combat command system, the Americans played air suppression, we couldn't afford it, so we played artillery integrated command.

To put it bluntly, it is to equip the artillery with radar and command vehicles, and then equip the artillery with wheels and replace them with self-propelled artillery.

This greatly improves the mobility of the artillery.

Through the improvement of the fire control system, the combat effectiveness of the artillery has been greatly improved.

The advantage of this is that the Americans also need to fire a hundred shells to feed the gunners.

We may be able to train with only fifty rounds.

But even so, you have to let the artillery squad really fire fifty rounds?

Why do you say 50 rounds, because you have to simulate various environments, such as stormy environment, night environment, ice, snow and hail environment and so on.

And a lot of what we watch on TV is fixed-target training, but in actual combat, who will stand there and let you fight?

txt download address:

phone-reading: