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Free Web Novel,Novel online - All in hlnovel.com -> Historic -> Anti-Japanese military industry is king Chapter 204 Blue and Blackened
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- Don't look at the guns that have just been manufactured, the surface is shiny and beautiful, but if no special treatment is done, the surface will be rusty in a short time. After all, it is iron.
It's like some people who bought a car and didn't take good care of it. When they saw that the brake pads were rusted, they would yell at them. How could a broken car be rusted?
Except for the non-rusting ceramic brake pads used in millions of luxury cars, there is no rust-free cast iron brake disc used in ordinary vehicles. When you drive out, you can see that the surface is bright and beautiful. , rusted again.
If the rifle made by the big guys is not treated with anti-rust treatment, the consequences will be the same. It will not be long before it will become a rusty gun in the hands of the soldiers.
How to prevent rust? Can I paint it?
Of course not.
Under normal circumstances, of course it can be brushed, but the gun must be fired. As long as the gun is fired, the propellant in the bullet is hot. Although a single-shot rifle does not turn the barrel red like a machine gun, the barrel It is also hot to the touch. If the paint is on it, the feeling will definitely be particularly sour. I don¡¯t know what reaction will happen to the paint at high temperature. In short, the smell alone is enough to suffocate people.
The iron parts on guns are generally not painted, especially the barrel. The commonly used method is blued.
Most of the firearms, when they leave the factory, look light blue and quite fresh, which means they have gone through the step of roasting blue.
This step is also very simple. Put the gun barrel into a special solution, usually sodium hydroxide solution. In this way, a dense oxide layer will be obtained on the surface of the weapon, and the anti-rust effect is quite good. Then Later, what phosphating treatment.
This is the outside. As for the inside, in order to increase the lifespan, advanced countries chrome-plate the inside of the barrel, which increases the anti-rust performance and anti-wear performance at the same time, which greatly improves the lifespan of the barrel.
However, none of these methods can be done on our own side.
It can only continue to use local methods to produce.
Under the gaze of everyone, Qin Baoshan disassembled the gun parts, and then came to the stove.
At this time, the stove had not been extinguished, and then, Qin Baoshan added another layer of bituminous coal on it, so black smoke came out from it.
And Qin Baoshan put these metal parts on the bituminous coal, so, amidst everyone's big eyes and small eyes, the surface of the shiny metal parts was blackened.
Liu Daquan was the first to react, wonderful! Although we can't roast blue, we can smoke black!
Metal rusts because the metal is oxidized due to contact with oxygen in the air. In professional terms, it is a process in which iron is turned into ferric oxide or ferric oxide or a combination of the two.
Among them, it must be done by contact, and now, it is necessary to form a protective film on the metal surface. The so-called blushing is actually this protective film.
On our own side, the roasted blue has become blackened, and the black guns look pretty good too!
Everyone watched like this, watching the parts being heated on the fire, being smoked, and being oxidized in the smoke, but this was not enough, Qin Baoshan took the parts from the fire from time to time to check the smoked parts. As a result, I found oil again, wiped it on it, wiped it for a while, and continued to put it back to bake.
In this way, after more than an hour of tossing, a black film had formed on the surface of all metal parts. At the same time, although this film was black, it was also bright. The dark and shiny surface appeared in everyone's eyes. inside.
"Okay, it's really you, Baoshan, when did you learn this skill?" Liu Daquan asked in surprise.
Every time Qin Baoshan showed his hand, everyone would be amazed. It seems that he is omnipotent and can do everything.
Now, looking at Qin Baoshan's familiarity, it is very simple. In fact, it is also a technical job. The blackened metal surface is technical, the temperature of the fire, the intensity of the smoke, and what looks very skilled. If you don't wipe the gun oil often before, you won't be able to master it at all!
"Me? I don't know either." Qin Baoshan is always prevaricating like this every time. In fact, this unique skill was naturally learned in the gun-making workshop in the Imperial Cemetery. He was also very good at it at that time. Yes, their gun-making workshop is famous for its blackening, as long as you look at the shiny black metal parts, you can tell that they are made by them.
"However, the chrome plating on the inside of the gun barrel is no good, and the soldiers have to take care of it."?? will do. "Qin Baoshan said.
Although the inside must be blackened, the oxide film inside is definitely not as strong as the outside, and the inside of the barrel must withstand the repeated washing of the propellant, especially if reloaded black powder bullets are used, the inside There are even more gunpowder residues.
Therefore, any oxide film is useless, and it can only be solved by chrome plating. Now there is no such condition, and it can only be solved by the soldiers' usual maintenance.
Wipe the gun after combat, and apply gun oil after wiping. This is the most important step in gun maintenance. Back then, in the era of front-loading guns, it was even necessary to rub the oil to insert the bullets in. Later, soldiers protested because the gun oil was lard.
When the gun was reassembled, it was different from before. The bright white parts turned black, and it looked more imposing. Qin Baoshan held it in his hand and was very satisfied: "This gun, test fire After that, send it to the superiors and let them see the progress of our base, don¡¯t think that we are making guns just for fun.¡±
"Well, Baoshan, do you want us to debug it again to see what can be improved?" Liu Daquan said.
After all, this is the first one, and it still has to be given to the boss. The big guy always feels uneasy.
Hearing Liu Daquan's words, Qin Baoshan nodded: "Of course, but if it is improved, we have to modify our drawings and mark them clearly, and every size must not be bad."
"Understood, don't worry, we all understand that the standard of size is the most important thing." Liu Daquan said.
The night has gradually darkened, and the house where Qin Baoshan lives is still brightly lit. Outsiders think that Qin Baoshan is very relaxed, and he also intentionally shows that he is very relaxed. In fact, many jobs are done like this Made it at night.
Wei Shuqin, who walked past the window, stopped, hesitated a few times, and knocked on the door anyway. (Remember the site URL: www.hlnovel.com - Didn't finish reading? Add this book to your favoritesI'm a member and bookmarked this chapterCopy the address of this book and recommend it to your friends for pointsChapter error? Click here to report
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