Chapter 850: Use of B gunpowder
After getting B gunpowder, Marin naturally wanted to test its power. So, Marin got a matchlock gun and a clockwork flare gun for testing.
The first test was the oldest version of the Spanish Musquete musket, which was built by Marin's earliest gun artillery hired from Spain, using the most common wrought iron forged barrel.
It should be pointed out that the earliest version of the Spanish Musquette musket was built with a roll of iron. That is, first roll a layer of metal sheet, and then heat and repeatedly forge until the metal sheet is basically beaten together after a long time. Then, wrap a second layer of iron sheet and repeat hot forging.
In short, the earliest Spanish barrel manufacturing method was very time-consuming. It takes months to build a barrel. Later, this method was passed on to the Ming by the Portuguese, and the Ming Dynasty bird buns were forged with a double-layer metal sheet, which was very inefficient.
The barrel used by Marin's North Sea country is Marin's video from "The Gunsmith in Williamsburg." It is made of a rectangular wrought iron plate directly forged and rolled. After being rolled into an iron pipe, the craftsman spreads iron powder on the forging seam while it is hot, so that the forging seam is melted and welded by the iron powder at high temperature. Even fine iron ore powder, that is, iron oxide, will be sprinkled on the hot forging joints. After sprinkling, the red iron pipe is buried in the charcoal pile, and the iron ore powder is reduced with coal. The reduced iron ore is directly "grown" with the forging joint ... This kind of heat reduction plus forging The method makes the production of the barrel easier. Skilled craftsmen can forge an iron pipe in one day. Unskilled, almost completed in two days.
Later, Marin improved the material properties. The quality of the original wrought iron was actually not good. Because, there is no process of phosphorus removal and desulfurization. In fact, this process is very simple, that is, secondary refining, and then put quick lime into the molten iron to make **** to remove phosphorus and sulfur. Then, a certain amount of graphite powder is added to increase the carbon content. After all, Marin remembers the 45th carbon steel used in the later 56 and a half years, not wrought iron.
In other words, Marin now has three different barrels in his hand-the traditional barrel made of iron rolls, the traditional forged iron barrel, and the low and medium carbon with poorly controlled carbon The barrel is made of steel ...
Because the power of B gunpowder is more than three times that of black gunpowder, it stands to reason that Marin should be reduced to 1/3 of the charge. But Marin wanted to test the performance of the barrel. Then, the medicine is loaded in the usual way ...
As a result, the oldest version of the double-layered iron barrel was blasted on the spot. Fortunately, during the Marin test, the method of using a fire gate to insert a long fuze did not cause casualties.
Then, the barrel made of wrought iron plate did not withstand the pressure. Although the explosion did not happen, the barrel was deformed ...
Only the barrels of medium and low carbon steel, which have an infinite amount of carbon content, have withstood the test. However, this is not necessary ...
Why? Even if you do n’t reduce the amount of propellant, it ’s a waste! Because, after 100 yards of rifle gun signing, it basically flew. Even if you use three times the power of B gunpowder, it is wasteful. Because, even if using black powder, within 100 yards, the lethality is enough ...
Then, it is natural to consider the problem of lowering the charge. Obviously, B gunpowder is used, and it can't be loaded with as many propellants as before. Otherwise, it is also wasted on the smoothbore gun. Moreover, it is also easy to explode.
As for the amount of reduction, Marin decided to use the data of later Mauser rifles ...
Mauser 1871 is a black powder rifle with a bullet caliber of 11mm and a length of 60mm. The G98, which uses smokeless propellants, has a bullet caliber of 7.92mm and a length of 57mm. Of course, this length includes the warhead.
Calculated in this way, the charge of the new bullet is about half of the black gunpowder. But the actual power is much greater. For example, in Mauser 1871, the initial velocity of the sub-bore is only 440m / s. The G98 using smokeless propellant, the initial velocity of the sub-bore has reached 800m / s ... the charge is reduced by half, but the initial velocity is doubled ...
Originally, Marin used 10 grams of black gunpowder for a spring rifle that used 30 grams of lead. But now with gunpowder B, the charge can be reduced. Out of the consideration of wasting kinetic energy beyond a hundred yards, Marin finally decided to reduce the charge to 3 grams when using B gunpowder ...
After testing, the charge of 3 grams is very reasonable. Because the power is not reduced at all ...
But after this test, Marin found that the use of smokeless gunpowder on the rifle did not make much sense ...
Why? Because whether you use black gunpowder or smokeless gunpowder, the effective range of the smoothbore gun is about 100 yards, and you can hit the gray machine further away. Moreover, the production cost of smokeless gunpowder is quite high, which is not cost-effective at all.
Unless, it is a copper shell bullet of later generations, the use of smokeless gunpowder is of value. After all, the savings of the copper material in the eggshell alone made a lot of money.
However, that is useless. Because, Marin didn't study chemistry, he didn't understand the manufacture of primer ...
Bottom fire is a difficult chemical problem. Unless the high-tech students in the chemical industry travel through ancient times, people in other professions can't handle the bottom fire technology. Although there is no simple primer for mercury retinoate, it is not easy to adjust, the stability is worse than nitrocellulose, and the power is also very great. Accidentally, I could kill myself ... so, don't even think about it ...
Therefore, Marin embarrassedly found that-B gunpowder was made, which had no effect on the musket ...
And when it comes to using propellant for artillery ... it doesn't seem to work ... after all, musket propellant is shot every few grams, and artillery propellant is about pounds, and a few pounds of propellant is shot ...
The cost of Marin making smokeless gunpowder is so high now that it is used as a gun propellant ... can't afford it, can't afford it ...
As a result, Marin was completely depressed-and finally came up with a modern smokeless gunpowder, which was useless, really sad ...
...
In the end, Marin's depression was still "cured" by Donnie Curry ...
How to "rule"? It turned out that Donnie Curry, as the captain of the blasting team, came to Marin to apply for a batch of gunpowder barrels for training. After all, blasting work is also very important. During the war, the blasting team can blast the enemy's gates. In peacetime, they can still mine ...
Donnie Curry does not cure or persuade people, but his arrival reminds Marin that B-gunpowder is not suitable as a smoothbore gun and smoothbore gun propellant, but it is used to When the blasting medicine can still be dropped ...
In any case, the explosive speed of gunpowder B is also close to 2000 meters per second, which is still the effect of being passivated. But it is always better than black gunpowder with a detonation speed of 500 meters per second.
So, Marin asked Donny Curry to get a gunpowder barrel filled with B gunpowder to practice blasting, and it turned out to be much more powerful, almost damaging the blasting team members. However, this still has a gap with Marin's expectations ...
Why? According to theoretical data, the explosive speed of gunpowder B is four times that of black gunpowder, and the amount of gas produced by combustion is more than three times that of black gunpowder. Theoretically, the power should be three times that of black gunpowder barrel. However, tests have shown that the explosive power of this new type B gunpowder barrel is less than twice that of black gunpowder ...
"What's going on?" Marin didn't understand. But when he picked up the B gunpowder particles in his hand and observed, he discovered the reason ...
It turned out that Marlin himself had to blame it. Because, in order to reduce the burning rate of B gunpowder, Marin deliberately passivated the surface of the particles. That is to use beeswax solution to coat a thin wax film on the surface of the particles. The presence of the wax film affects the burning speed of the gunpowder particles and the speed of deflagration ...
Therefore, Marin soaked the remaining B gunpowder with alcohol again, and washed and filtered to remove the wax film on the surface. In this way, after testing again, the power really reached about 3 times of the black powder barrel.
In the end, Marin settled down-B gunpowder was specifically used to make blasting cartridges ...
However, now Marin will not fight against people for several years, even if he used a blasting cartridge, it is useless ... really distressed ...
Finally, a drunkard reminded him ...
Marin went out to relax, and saw a drunkard, probably drunk after drinking a bottle of Erguotou, and directly threw a small glass bottle of half a pound directly out. That posture is like a throw from a future generation ... a grenade ...
"Yeah, I can use gunpowder B to make grenades ..."
Before, Marin had not thought about getting grenades. However, the power of black gunpowder is too low, and the grenade can only hurt people, not kill them. Even with the addition of steel balls, the power is still a bit low.
Many historical novels say that putting black gunpowder into a pottery can kill the Quartet, which is simply a comparison. In fact, the 8th Route Army used black powder to make grenades. However, the grenade produced in this way is of poor quality. Let me put it this way, black grenade-made grenade often explodes in half. As for the killing effect ... only killing, not killing the enemy on the spot ... Its biggest function is to send one or two devils to the hospital. Of course, there is another effect, which is to scare the enemy ...
However, it is also wrong to say that this type of grenade will not kill anyone. After all, if the steel **** or iron nails in the grenades happen to fly to the enemy's temple and other vital parts, they can also be killed on the spot ...
Those historical novels say that the black gunpowder jar was used to blow the enemy troops upside down ... Don't blow it, but it is very possible to blow up the enemy's war horses. After all, animals are generally afraid of the sound of explosions. Especially if you haven't encountered it before ~ www.wuxiaspot.com ~ is more easily frightened.
All in all, the reason why the Ming army was able to beat the Mongolian cavalry in the early years of the Ming Dynasty had a lot to do with the fact that the Mongolian army ’s horses had not received relevant training. In a decisive battle, the horses were frightened on a large scale, and a P?
Towards the end of the Ming Dynasty, the Manchu army understood how to adapt the war horses to the training of guns and cannons (the direct elimination), and returned the earmuffs to the war horses. Then, the firearm function of the Ming Army greatly decreased ...
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Of course, that's talking about black grenade. That kind of power will definitely not work, but if you use three times the power of smokeless gunpowder ... Although the power can't catch up with the later generations of high-explosive products, it can be much better than the special scary grenade made of black gunpowder ...
As a result, Marin ordered the development of a small iron can with a wooden handle, which was used to hold B gunpowder and used as a grenade. Well, because there is no cable technology, I can only use the fire rope to ignite ...
Its shape is made into a grenade with a wooden handle in later generations. The wooden handle is hollow and fuse. The top of the wooden handle is usually covered, mainly to protect the fuze from moisture. When in use, first open the lid, ignite the fuze with a fire rope, then throw it out with a wooden handle ...
