my magic industry

Chapter 233 Machine Gun
As for the large-caliber artillery that Xia Lin explained to research and develop, as the caliber increases, it will naturally be filled with more propellant and larger and heavier shells, which means that the chamber pressure during firing will decrease. It is several times higher than the original 80mm breech gun, so without changing the material, the wall thickness must be at least double that of the 80mm breech gun.

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

Combining various factors, the caliber of this gun seems to have only increased by 20mm, but the actual weight has increased by more than several times. According to Xia Lin's design drawings, the total length of the finished 100mm shore fire gun should be 3500mm. The total weight is almost 2200 kg.

In this case, it is natural to use a better method than manual methods to lift the cast cannon body. If this lifting system cannot be done, Xia Lin and other magic machines are planning to upgrade this system after they complete the research and development. .

"Boss Xia Lin, this is not a problem. When we developed the large-caliber artillery, we used this lifting system to lift the cast artillery and the mold. Before, our workers were a little bit in a hurry. Now It’s quite proficient.”

The head of the Yide workshop explained, and soon brought Xia Lin to a workshop with a somewhat different atmosphere from other workshops. There are also equipment such as furnaces for casting cannons, quenching pools, and driving beams. All kinds of thick canvases drying on the bamboo poles and some female workers who are sewing strips of cloth at the square table make the workers here more... reserved?
Xia Lin looked at the young lathe operators who followed the dwarf masters to control the machine tools and process each part. They were all neatly dressed, and they were not as bold as the workers in the previous workshops. Some subtly thought.

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

"Yes! Workshop Manager Ede! Let's go right away!"

While the workshop manager Yide was looking at Xia Lin, he casually grabbed two employees who were carrying wooden boxes and gave them instructions. The eyes of the two employees who were not too old immediately fell on Xia Lin. The words of workshop manager Yide showed shock and admiration, and he hurriedly put down the wooden box full of various metal parts and ran back.

"Boss Xia Lin, please follow me!"

After explaining the matter about the machine gun, the workshop manager Yide turned around and put on a respectful attitude, and led Xia Lin out through a gate of 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. Therefore, in addition to the thick cement brick walls around each factory building, Xia Lin also deliberately left some open space when drawing the gun factory drawings for them to immediately develop For example, there is a shooting range outside this research and development workshop, and several other new workshops also have the same design.

After waiting in the shooting range for a while, Xia Lin saw several young employees moving out several large wooden boxes from the factory building and prying open the wooden boxes. Xia Lin finally saw the purpose of his trip today. The first machine gun that was born during the research and development process successfully passed the reliability and stability tests set by Xia Lin.

The basic design drawings of these machine guns were naturally provided by Xia Lin. After all, in this world, he has not trained mechanical engineers who can design their own mechanical structures. After some changes, the magazine feed was changed to the belt feed, and a gas guide device, which is the most critical to the machine gun, was added.

Through this device, after the machine gun completes the firing of the last bullet, the gunpowder gas generated in the barrel will squeeze and open a locking mechanism, and the locking mechanism will be displaced, thereby helping the machine gun to complete the ejection link, and at the same time automatically swallow the shell. For the next bullet on the belt, the recoil spring mechanism connected to the locking mechanism will block the chamber, and at the same time, the flame spell rune disk behind the chamber will be closed and fired with the magic stone again.

This process sounds simple, but in fact the requirements for machining accuracy are quite high. If the machining accuracy is not enough, the gunpowder gas will leak, which will lead to malfunctions such as jamming.

And even if the accuracy is enough, because the black powder used as the propellant has too much burning residue, this machine gun cannot shoot continuously for too long.

Under such circumstances, these machine guns are not much different from Xia Lin's expected image. After carefully looking at the machine guns that look like Type 2 rifles, which are about a third longer, Xia Lin then Ask the workshop manager:
"What is the data of this machine gun? How many bursts can it fire? How much is the failure rate controlled now?"

"According to your request, boss, the machine gun we developed uses the same barrel as the Type 2 rifle. The current design data is 10mm in diameter, 1450mm in overall length, 1000mm in barrel length, and 11.8kg in total weight. stable tripod.

The current rate of fire is about 1 rounds per minute, but when firing about 200 rounds of bullets, you must use the Cleansing Rune Disk to clean the inside of the gun chamber, otherwise accidents such as bombing will easily occur, so we follow the Boss, you designed and manufactured a batch of [-] rounds of canvas ammunition chains.

As for the failure rate, it has been reduced to a certain level after the arrangement of Master Faen, where the dwarf masters are responsible for the precision mechanism and the young apprentices are responsible for the division of labor for the simple mechanism.

At least after seven days of testing, the twenty machine guns assembled in the first batch have successfully completed the durability and stability tests you set in different environments, and only three machine guns failed during the period. "

The workshop manager Yide quickly explained that from such a fluent introduction, he should be quite familiar with the research and development process of this machine gun, and the workshop manager Xia Lin was well chosen.

"Only thirty rounds? Sure enough, black powder is still not good enough."

Xia Lin touched his chin with some headaches after listening to the introduction of workshop manager Yide. This level is much better than that of the Type 2 rifle, but it does not quite meet the fire support needs of the new army on the battlefield. , Dingtian just has one more firepower point than before, which is equivalent to the automatic rifle of the previous life.

On the other hand, the research and development center that can solve this problem is responsible for the progress of the new explosives. So far, the progress is not optimistic. Even if Xia Lin knows the whole process of chemical reaction equations for making that new explosive, it can’t change that Xia Lin has never used it before. fact.

Even because these knowledge belonged to the sensitive area in the previous life, there are many ambiguous links in the production process shared by Daniel that Xia Lin saw on the forum. Determine the laboratory preparation process for new explosives.

However, at that time, it will be limited to small-scale laboratory production. If he really wants to replace black powder with that kind of smokeless gunpowder, Xia Lin will have to find out the process of industrialized large-scale production by himself.

(End of this chapter)