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Chapter 196 People who are ahead of the times 3
However, the French pursue perfection and always believe that the screw-type breech is better. After years of research, they have really improved the shortcomings of complicated operation.The method is actually very simple. Instead of using a full thread, it is divided into several sections. The scientific name is broken thread.

In later generations, some bottle caps still use broken threads. The threads that originally required many turns to tighten or loosen can be broken into several pieces and only need to be turned a fraction of a turn to achieve the same effect.The exact fraction depends on how many pieces the thread is broken into!
In this way, although the processing difficulty of the broken thread breech block is still much higher than that of the wedge-shaped breech block, the disadvantage of the rate of fire does not exist. In addition, it has better air tightness and is lighter in weight. As long as the production cost is not too high, it is a very good option. choose.

The wedge-shaped breech block was created half a year ago by Zhao Shizhen based on the drawings given by Hong Tao. The 3-inch field gun currently in the mass production stage uses a wedge-shaped breech block, which is mainly economical and affordable.

The broken threaded breech block is prepared for naval guns. With it, the barrel of the naval gun can be made longer, the bore pressure is higher, the range is longer, and the trajectory is straighter, which is more conducive to the sea. Combat.

"...It's just that the explosive bomb has not been tested properly. I have a heavy responsibility and deserve death!" But in the blink of an eye, Zhao Shizhen bowed his head on the floor again and apologized. The smile on his face disappeared completely, and he waited on the side. Wang Chengen was dumbfounded and didn't know whether he should help him or not.

"Get up, sit down and talk... Is it because the timing of the detonation is difficult to control or is it that the cast iron shell cannot withstand the chamber pressure?" At such a close distance, Hong Tao was too lazy to give instructions to others. He reached out and grabbed Li Zhizao's collar and pushed him to the seat while opening the door. The other person asked while opening the box, looking like he wasn't angry.

"There is no problem with the gray cast iron shell, and none of them exploded when the charge was fully charged. It was because Chen Nong's fuse was fast and slow, which was difficult to control. Some projectiles shattered after hitting the ground and hit hard objects, but there was still no movement." Speaking of the details of Zaomai City, Zhao Shizhen took out two more pieces of paper from the box and pointed to the patterns on them to explain in detail.

"This picture comes from me, and the method also comes from me. What are you guilty of? Have you ever summed up how many of the hundred bombs failed to explode?" What picture was he looking at? Hong Tao knew the problem was there even with his eyes closed. It is neither the designer's fault nor the manufacturer's negligence, but a natural flaw.

This most primitive blooming bomb is imitated from a 19th century artillery shell called the Hochski grenade. The main body is a tough cast iron ball filled with explosives and fixed on a cork holder. The principle is similar to the Minie bomb.

The difference is that there is a special component on the cast iron ball. It is a cork with a curved channel filled with ignition powder inside. By controlling the length of the cork, the cannonball can explode at different distances.

The principle is correct, but when applied in practice, there will always be certain deviations.In addition to the length of the cork, the thickness of the internal channel, the composition of the ignition powder, the humidity of the external environment, and even the chamber pressure of the cannon will all affect the burning speed of the ignition powder in the cork.

The problem of processing errors can be solved through the skills of workers and upgraded equipment, but the use environment cannot be controlled manually, so Hong Tao cannot prevent the misfire rate of artillery shells.

"...About [-]%." Zhao Shizhen's expression was very sad, with a little bit of shame.In his opinion, the design idea of ​​the explosive bomb is very, very perfect. If there is a problem, it must be because the manufacturer's ability is limited, that is, he is not qualified.

"For the time being, we will produce according to the standard of 15.00%. We will summarize the omissions in materials and processes while using it. There is still room for improvement." It was only [-]%. Hong Tao was greatly relieved, which was far lower than his expectations.

I recall that when the Golden River Empire developed the explosive bullet, the misfire rate was close to 40.00%, but in actual use it was more lethal than the solid bullet. Until the silver nitrate primer was developed, the reliability of the cork was only about 80.00%. It does not affect combat at all.

"Is this a sample of a new gun?"

The problem with the explosive bombs was solved, and the contents of the other box were taken out and placed on the table.They are two muskets, one long and one short. The barrels have changed from hexagonal to round, and they are polished very regularly. It can be seen that they are not handmade, but using turning equipment.It’s just that the thickness of the barrel is relatively large and the weight is heavy.There is no way, this is not a problem of the process but the material is not up to standard. No matter how good the rolling process is, it is not as strong as the steel pipe made by the seamless process. To ensure the chamber pressure, the only way is to thicken the pipe wall.

"Following His Majesty's instructions, I reduced the inner diameter of the gun barrel to 4'5", and kept the lead bullet and charge unchanged. The entire gun weighed less than 7 kilograms, and its power has not been reduced but increased, and it is extremely sharp!"

It was completely different from his expression when he just talked about the artillery shells. Zhao Shizhen's face was full of pride when he talked about these two muskets.In his opinion, this is the limit of fire cannons. Looking at the Ming Dynasty, Japan, North Korea, and Southeast Asian countries, no fire cannon can surpass it, including the Folangji people.

"Where's the production volume?" Hong Tao also wanted to show some approval, but unfortunately he couldn't.

What a crappy thing. It can only fire three or four shots per minute. Although its range is more than twice that of the muskets of the same era, and its accuracy has also improved a lot, it still can't completely crush the cavalry unless it produces more. It can also be lifted up.

"According to the assembly line method taught by His Majesty, skilled craftsmen can produce two long blunderbuss tubes and five short blunderbuss tubes every ten days, with less than [-]% waste!"

There is also the problem of success rate, but Zhao Shizhen's attitude is completely opposite.He frowned when faced with a sub-bullet rate of less than [-]%, but when it was the gun barrel's turn to have a scrap rate of nearly [-]%, he beamed, as if it was a great achievement.

"Well, yes, small batch production can be done, but the main focus must be on the artillery first." Hong Tao could understand why this was the case.Explosive bombs are a new thing and there is no precedent to compare them with.

But the fire gun has been manufactured for many years, and the scrap rate has always been high. Suddenly it was reduced to [-]%, and it was very powerful. It must be very satisfying. It can be regarded as another way of transitioning from frugality to luxury.

"...Wang Chengen, tell Zhang Ran to find a place to camp!" He originally planned to call Xu Guangqi and Wang Zheng to have a chat alone, but the smell of soot mixed with oil from outside the car reminded Hong Tao that it was not far from Haihe Machinery Factory. Far.

"Changji, do you dare to make a bet with me? In a few years, this river will turn black, with no fish or shrimp left, and it can neither be used for watering the ground nor for drinking."

After getting off the carriage, Hong Tao walked to the river under the protection of layers of royal guards and royal horsemen and grooms. Looking at the blue waves rolling south, he suddenly turned his head and grinned at Zhao Shizhen.

"...I have nothing to offer, how dare I fight with Your Majesty." Zhao Shizhen was also looking far into the distance, but what he saw was not the river, but the huge courtyard rising from the ground more than a mile away.He neither understood nor was interested in the emperor's invitation, so he just accepted it casually.

(End of this chapter)