Because he was born in the hometown of blacksmiths, Hu Changyi was quite familiar with forging. Here, there are both small furnace anvil and sled hammers, industrial forging such as air hammer and plywood hammers, and hydraulic press friction.

More advanced forging methods like presses.

For gun barrels, Hu Changyi also knows the more advanced methods of producing gun barrels such as coaxial precision forging or oil pressure.

Of course, the barrel is best forged with cold forging, but there is no equipment... Even if there is equipment, there is no electricity... So, it is better to swing a sledgehammer and add a mold to make the barrel with fine forging of the mold.

At least Guo Dezhu is here. Everyone is familiar with this method and has a high tolerance rate.

In other words, in order to increase the fault tolerance rate in production, Hu Changyi left enough redundancy for the barrel with thick and thin inside and outside diameters. The highest fault tolerance rate is that it can be used as a shotgun barrel. If it makes another mistake? Then it can only be used as a

Fire stick...

Besides, as far as the materials of the rails sent by our Lao Li, the existing processing technology is actually the best. After all, with the steel outlets of these rails, the well-made barrel can ensure accuracy within 500 rounds.

If it remains unchanged, the service life of 1,000 rounds is good.

Do you think that the lifespan of 500 rounds guaranteed accuracy is very short, right? It is indeed very short. However, given the use rate of the Eighth Route Army soldiers who can fight 5 bullets in a battle, this barrel can support 100 to 200 rounds of the gun.

Fighting...

"One, two, one, two, one^ one, one, two, three... four..." Even if the Chinese New Year is still a few days away, it can't stop the guerrillas from running unmovingly every day.

"One, two, one, two, one..." In addition to Lao Kong's independent battalion, the 772nd Regiment was also here.

Don’t doubt why the 772nd Regiment arrived in Shiguai Village. It was just because Zhang Wanhe saw the production situation of the military workshop and quickly reported to the division headquarters.

"Okay, I'll talk about today's mission first!" After the morning jog and breakfast, Hu Changyi called the soldiers' workshop and the people from the guerrillas to arrange the mission together.

"Today's mission, captain, you continue to lead the recruits to train assassination and gun-carrying. Those who are not working in the military workshop will also train together! What I'm talking about below is about work, listen to it!"

"The first thing we are talking about is the barrel! Comrade Fugui, today you took Sun Zhaoxi and started to rifle the drilled barrel with that wooden rifling machine. We have 40 qualified rough parts, and now we have already

The outer circle has been fine-grained to a standard thickness, and the fault tolerance rate is already very low."

"So, we must be careful. Because we are wrong, we can only continue to ream the hole and become the 7.62 Mosinnagan barrel." Hu Changyi said.

"Don't worry, captain, we will be careful!" Li Fugui said.

"Well, I'll ask you two about the barrel. Let's talk about the bolt... Yuan Shouge? What's wrong with you?" Hu Changyi looked at Yuan Shouge.

"Don't worry, Captain, 80 gun bolts have been built, all of which are standard pieces, I have checked them myself!" said Yuan Shouge, a senior fitter who is capable and hard-working.

"Well, Xiao Yuan, you have to remember, don't learn from those old workers, you must be standardized, and strive to achieve a model of firearms, and every accessory can be used in exchange! You also repaired them with me.

You should know the importance of the universality of parts for guns!" Hu Changyi said.

"Don't worry, captain, I understand!" Yuan Shouge said.

"Very good, Lao Ma, what's wrong with you? How much bayonet I want?" Hu Changyi looked at Ma Quanyou.

"Report to the captain, according to the drawings you gave, 100 folded triangular thorns have been made, but the steel mouth is not good, so I have to continue to deal with it!" Ma Quanyou said.

"It doesn't matter if the steel mouth is not good. If you have time in the future, let Luda continue to experiment hard. Sooner or later, there will be qualified steel for us! Besides, our triangular thorns do not need too high steel size, and low carbon steel can do it!"

Hu Changyi said.

"Well, I understand! Then should we continue to produce folding triangular thorns? Or continue to match rifles from other units?" Ma Quanyou asked.

"Don't continue to make folds, these are enough! The rifles of the brother units are still naked now, so that's not enough. Continue to produce quickly and equip the 772nd Regiment first!" Hu Changyi said.

"Okay, I understand!" Ma Quanyou said.

"Chunsheng, Qiusheng, the butt matter depends on you brothers! Is there no problem?" Hu Changyi asked.

"Don't worry, captain, this is a small job. Don't worry if you leave it to our brothers!" said the two brothers who had just completed the rifling machine.

"Thank you two, we have made a contribution to our guns! I think our name will be left behind in our military history in the future! This is a matter of leaving a name in history!" Hu Changyi said.

"Haha, that's a good relationship! Captain, what am I doing? Keep shooting the barrel? Or do you shoot the bolt?" Guo Dezhu asked.

"Don't, your task is to follow me, because there are other accessories that have not been made well. You are also needed as the master!" Hu Changyi said.

"Hehe, as long as you like my skills!" Guo Dezhu said.

"Well, Luda, let's stop the small crucible steelmaking on your side. Let's discuss the anti-rust technology of these parts. We have no other way. You can do the blue baking process, right?" Hu Changyi asked Luda, a metallurgical expert.

.

"The baking blue process...just our equipment...let me think about it..." Lu Da, who had been experimenting with the small crucible steelmaking for half a month, frowned and began to think.

"Okay, don't worry, let's try it with bituminous coal powder. I've raised Dezhu and mentioned it, right Dezhu?" Hu Changyi asked.

"Well, when we Zhangqiu blacksmiths made an iron pot, we would burn it on the fire after finishing it, and then use fat lard to pass it. When I was hitting the gun, I thought about the problem of rust prevention. If it doesn't work, let's try it.

?” Guo Dezhu has a pioneering and innovative experimental spirit.

"Iron and steel are different... But you can try it, I'll think about it..." Lu Da interrupted and continued to think.

"Okay, basically that's all. Everyone is busy, busy! Dezhu follows me, let's get the rest of the gun chamber parts! Thanks to Commander Chen and Commander Xu for the parts sent by him.

, Our steel plate is definitely enough!" Hu Changyi said.

"No problem, hehe, after you said that, I realized that the steel we used was all obtained from the Japanese!" Guo Dezhu said.

"Haha, that's right, our Eighth Route Army is poor, and the Japanese are our material library! Okay, everyone works hard, let's try to build the gun before the New Year, so that the comrades can have a comfortable New Year! After all, we can ourselves

Once the gun is made, everyone is confident!" Hu Changyi clapped his hands and said.
Chapter completed!