Of course, camphor has a certain volatility, and camphor balls use this principle to repel insects. Therefore, in order to prevent the camphor on the surface of the smokeless gunpowder particles from volatilizing, Malin specially wrapped the passivated smokeless gunpowder with oil paper and sealed it from the air. Like this, cut off the camphor of air, just can not volatilize.

In fact, in the original history, the double-base propellant of the British copied Nobel's idea, but the passivation agent was changed from camphor to vaseline.

In fact, Marin can also get Vaseline now. Because Vaseline is actually petrolatum extracted from petroleum.

But the problem is that the production of petroleum is too low now, tens of catties per day. With such a production, there is even less Vaseline that can be extracted.

Therefore, Marin feels that it is better to use camphor as a stabilizer at present. As for Vaseline, we have to wait until the oil production is higher in the future, and then get it. Of course, people can now be sent to study the extraction of Vaseline. When the vaseline extraction technology matures, Marin plans to explode the production of smokeless gunpowder. After all, even the British double-base propellant is nothing more than a mixture of nitrocellulose, nitroglycerin and petrolatum, and the production technology is very simple. If it weren't for the fact that the primer is too mysterious, the production method can't be found on the Internet in later generations, so Marin doesn't understand, maybe Marin can directly produce the metal bullets of later generations.

Moreover, Marin understands the structure of AK47, and it is not complicated to manufacture. Even a small blacksmith in a village on the border of Pakistan Railway can make it. But no matter how good the blacksmiths in those villages are, they don't know how to make primer. Although they can make all kinds of firearms, they just can't produce their own bullets and can only buy them from professional chemical factories.

Therefore, the Huaxia of the later generations controlled the proliferation of guns by controlling the technology of the primer and not leaking it. Even if you handcrafted an AK or a big black star, without bullets, it is no different from a fire stick.

Marin felt that he was so hard-pressed. He clearly had the propellant formula of the 20th century's technological level, but he didn't know how to deal with the core primer. So, what if he made smokeless gunpowder? Had to use an old-fashioned wind-up gun to light the fire...

Even, because the barrel was rolled and forged, Marin did not dare to use the more powerful British double-base propellant, and only dared to use the oldest version of the French B gunpowder. Moreover, the charge was reduced as appropriate to prevent the weak barrel from blowing up...

Marin suddenly regretted that he didn't go to the School of Chemistry for further study before crossing. If he knew how to make primers, he would have already started fixing AK47. At that time, as long as there is enough ammunition, he can push the whole of Europe horizontally with a regiment. In front of thousands of AK47s, the soldiers and horses of the world gathered together in this era are not enough for him to "chug"...

Unfortunately, he is only a liberal arts student. Even with the propellant formula of the 20th century, you can only play with front-loading guns that reload extremely slowly. And the reloading speed of the front-loading gun is not enough to be cut in the face of a large-scale cavalry charge... Therefore, the current musketeer is still a younger brother and needs the protection of the spearmen...

...

However, with safe smokeless gunpowder, Marin can consider building a more powerful cannon. Influenced by Napoleon and Bismarck, Marin is also a big bomber who believes that "truth is only within the range of cannons".

In fact, it is not just Marin, the Chinese army of later generations is also a supporter of the idea of ​​​​"big artillery doctrine". When fighting the monkeys in South Vietnam, our army used artillery shells to wash the ground every day, leaving no room for the opponent's jungle warfare skills.

Although Yue Hou has rich experience in jungle guerrilla warfare, he even drove Lao Mei away. However, facing the Chinese army at their doorstep, their tricks won't work. The old American cannonballs have to circle half of the world, but Huaxia directly uses trains to pull cannonballs to the front line one by one, and can't finish washing the ground with cannonballs every day. Then, the Yuehou regular army on the opposite side was dumbfounded, they were not as threatening as their villagers who were good at sneak attacks.

With the safe and reliable smokeless propellant, the restless bombing heart in Ma Da's heart became agitated...

Ma Dazhao feels that the power of the current cannon is too weak.

Even the city walls made of stone cannot be blasted, which is really not practical. Therefore, he decided to launch a powerful artillery, not asking for anything else, only to blast away the enemy's city walls and destroy the enemy's warships...

Of course, with the current level of technology, it is somewhat difficult to manufacture rifled guns. Because the rifling of the artillery is very deep, it is difficult to carve by hand, and production is difficult. Moreover, the life of rifled guns is much shorter than that of smoothbore guns. The reason is that the rifling is easily ground.

Therefore, Ma Dazai decided to make a smoothbore gun, a powerful smoothbore gun. When it comes to smoothbore guns, the pinnacle is the Pexan gun made by the French in the mid-19th century. Its 68-pound super-large caliber directly ended the wooden ship era of warships. Because no wooden boat can withstand the impact of a 68-pound iron ball...

What Marin wants to do is this kind of Pexan cannon that ended the era of wooden ships and led to the birth of iron-hulled warships. This is the pinnacle of smoothbore guns, whether it is used to bombard wooden warships or to bombard the walls of this era, it is easy and enjoyable.

The only problem is probably that the casting of heavy artillery is much more difficult than light artillery. Because the pipe wall of the heavy artillery is very thick, structural problems are prone to occur during the pouring process. Once something goes wrong, the artillery will be scrapped.

Fortunately, Marin understands the "Rodman Cannon Casting Method" of inner membrane water cooling, which can greatly improve the success rate of heavy cannon casting. Otherwise, he really didn't have the confidence to cast a behemoth like a 68-pound gun.

Moreover, in order to improve the quality of the artillery, Marin does not plan to use ordinary steel to cast the cannon, but intends to use the highest quality chrome-nickel alloy steel, which is the legendary stainless steel.

Since Haider's younger brother Wiltz discovered a small chromite ore in Cuba, Marin has the conditions to produce stainless steel. Although the effect of stainless steel casting cannons is not as good as that of tungsten steel, Marin does not have tungsten in his hands now, so he can only use the best chromium-nickel alloy steel to cast Pexan cannons.

Once this super powerful cannon is cast, Marin will be invincible at sea. No matter what kind of enemy warship it is, just rely on it and sink it with a single shot...

Even if the original flowering ammunition design is not used, only the solid ammunition, the 68-pound shell of the Pexan cannon, can easily smash the side of the enemy ship, causing it to leak and sink. Moreover, there are no heavy battleships in this era, and the sides of warships are generally not thickened, and they cannot withstand 68-pound iron ball shells.

With the heavy stainless steel cannon and the powerful smokeless propellant, Marin felt that once it was done, his navy would sing "Invincibility is a Loneliness". Without him, he is really invincible...

Once this ultimate heavy artillery is produced, the navies of other countries will have to GG. So what if Spain and Portugal know that America is a rich continent? Dare to grab? Let me immediately introduce you to a kind of invincible heavy artillery—Pexan cannon... Come, come, your warships are all sinking to the bottom of the sea and "lurking"...

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