For example, the large-caliber artillery that Xia Lin explained to research and development, with the increase of caliber, will naturally be filled with more propellants and larger and heavier shells, which means that the chamber pressure when fired will be several times higher than the original 80mm breech gun, so without changing the material, the wall thickness will be at least twice as thick as the 80mm breech gun.

In addition, the main purpose of Xia Lin's design of this gun is to be used for heavy facilities such as shore defense and fortresses that do not need to be moved, and the length of the barrel will be much longer than that of the 80mm breech gun.

A combination of factors, the caliber of this gun seems to have increased by only 20mm, but the actual weight has increased several times, according to Xia Lin's design drawings, the total length of the finished 100mm shore defense gun should be 3500mm, and the total weight is almost 2200 kg.

In this case, if you want to lift the cast cannon body, you naturally need a better way than manual work, if this lifting system can't do it, Xia Lin and the other magic machines are ready to upgrade this system after completing the research and development.

"Boss Xia Lin, there is no problem with this, when we developed that kind of large-caliber artillery before, we used this lifting system to lift the cast artillery together with the mold, and our workers were still a little busy before, but now they are a lot more proficient."

The head of the workshop explained that he soon took Xia Lin to a workshop with a somewhat different atmosphere from other workshops, where there were also furnaces, quenching pools, and driving beams for cannon casting, but the various thick canvases hanging on the bamboo poles on the side and some female workers sewing strips of cloth next to the square table made the workers here more ...... A little reserved?

Xia Lin looked at the young lathe operators who followed the dwarven masters to control the machine tools and process parts one by one, they were all neatly dressed, and they were not at all as bold as the workers in the previous workshops, and thought a little subtly.

"Boss Xia Lin has come to inspect, you two call a few people to take those machine guns we built to the shooting range outside!"

"Yes! Ide workshop chief! Let's go right away! ”

The head of the Yide workshop looked at Xia Lin, and casually pulled the two employees who were carrying the wooden boxes and instructed them, the eyes of the two employees who were not too old immediately fell on Xia Lin's body, and with the words of the head of the Yide workshop, he hurriedly put down the wooden box full of various metal parts in his hand and ran back.

"Boss Xia Lin, please come with me!"

After explaining the matter of the machine gun, the head of the Ide workshop turned around and put on a respectful attitude, and took Xia Lin out of a gate in the R&D workshop, and there was actually an empty shooting range outside.

The gun factory and its supporting gunpowder factory are prone to explosion accidents, so in addition to the thick cement brick walls around each factory, Xia Lin also deliberately left some empty space for them to immediately test the developed equipment when drawing the drawings of the gun factory, for example, there is a shooting range outside this research and development workshop, and several other new factories also have the same design.

After waiting in the shooting range for a while, Xia Lin saw several young employees move out of the factory a few large wooden boxes, pry open the wooden boxes, Xia Lin finally saw the purpose of his trip today, the first machine gun born in the research and development process of the gun factory during this period of time, successfully passed the reliability and stability test set by Xia Lin.

The basic design drawings of these machine guns were naturally provided by Xia Lin, after all, in this world, he had not yet trained a mechanical engineer who could design the mechanical structure by himself, but in fact, it was based on the Type 1391 Type 2 rifle that made some changes, changing the magazine feed to the chain feed, and adding a gas guide device that is the most critical for the machine gun.

Through this device, after the machine gun completes the firing of the last bullet, the gunpowder gas generated in the chamber will squeeze and open a locking mechanism, and the locking mechanism will be displaced, thereby helping the machine gun to complete the shell throwing link, and at the same time automatically swallow the bullet on the next bullet chain, and the re-entry spring mechanism connected to the locking mechanism will then block the chamber, and at the same time, let the flame rune disk behind the chamber of the gun complete the closure and fire with the magic stone again.

This process is simple to say, but in fact, the requirements for the precision of processing are quite high, if the processing accuracy is not enough, the gunpowder gas leaks, which will lead to the occurrence of jamming and other failures.

And even if the accuracy was enough, this machine gun could not shoot continuously for too long due to the fact that there were too many burning residues of black powder as a propellant.

In this case, these machine guns were not much different from the image expected by Xia Lin, and after carefully looking at the machine guns that looked like Type 2 rifles were almost a third longer, Xia Lin asked the workshop leader:

"What are the data for such a machine gun? How many bursts can I make? How much is the failure rate under control now? ”

"According to your requirements, the machine gun we developed is the same barrel as the Type 2 rifle, and the current design data is 10mm caliber, 1450mm in length, 1000mm in barrel length, 11.8kg in total weight, and is designed with a matching stable tripod.

The current rate of fire is about 200 rounds a minute, but when firing about 40 rounds, you must use the Cleaning Rune Disk to clean the inside of the chamber, otherwise it is easy to have accidents such as exploding, so we have made a batch of canvas bullet chains with 30 rounds according to your design, boss.

As for the failure rate, it has been reduced to a certain extent after Master Faun arranged for the dwarven masters to be in charge of the precision mechanism and the young apprentices to be in charge of the division of labor and processing of the simple mechanism.

At least after seven days of testing, the first batch of 20 machine guns produced and assembled successfully completed the durability and stability tests you set for different environments, and only three machine guns failed during the period. ”

The workshop director of Yide hurriedly explained that from such a smooth introduction, he should be quite familiar with the research and development process of this machine gun, and this workshop leader Xia Lin chose not to lose.

"Is it only thirty rounds? Sure enough, black powder still doesn't work. ”

After listening to the introduction of the head of the Yide workshop, Xia Lin touched his chin with a little headache, this level is much better than the Type 2 rifle, but it is not very able to meet the fire support needs of the new army on the battlefield, and the top of the sky is just one more firepower point equivalent to the automatic rifle in the previous life than before.

On the other hand, the progress of the new explosives in charge of the R&D center that can solve this problem is not optimistic, even if Xia Lin knows the chemical reaction equation of the whole process of manufacturing that new explosive, it cannot change the fact that Xia Lin has never been able to operate it.

Even because this knowledge belonged to a sensitive area in the previous life, there were many ambiguous links in the production process shared by the big bull that Xia Lin saw on the forum, and it was therefore because Xia Lin organized people to slowly conduct trial and error, and try to determine the laboratory production process of the new explosives.

However, when the time comes, it will be limited to small-scale laboratory production, and if he really wants to replace black powder with that smokeless gunpowder, Xia Lin will have to explore the process of industrial large-scale production by himself.

(End of chapter)