Chapter 107: Repairing the Yellow River Cannon

The old man and the young man started working as soon as they returned to the laboratory. The vigorous Wu Sixue was responsible for preparing the outline of the research and development, while Huang He went to find the otaku Shan Wenbao.

This irritable old man can't be persuaded by ordinary people, even if Zhang Wanhe came, he might be frustrated. After all, he was still a little upset about the simple wind tunnel.

After seeing that all the main R&D forces were present, Wu Lao walked to a blackboard with a cane.

There was a hand-drawn structural diagram of the Type 92 infantry gun on it. From the detailed annotations everywhere, it can be seen that the owner of the drawing must have spent a lot of effort.

Originally, Wu Sixue wanted to imitate the Japanese Type 92 infantry gun, but after Huang He knew this idea, he immediately persuaded him.

Excluding the ones currently being unlocked, the next decision can obtain the unlocking rights of various types of artillery of the Gallic chicken.

From small-caliber anti-aircraft guns, anti-tank guns to large-caliber 155 heavy howitzers, who would still look down on the Japanese 70mm small water pipes at that time?

Old Wu was not an old-fashioned person. After learning that there was something good, he gave up the idea of ​​imitating it.

But the drawing was still kept. He planned to select some talented comrades in the military industrial zone and let the technicians get in touch with the structure and manufacturing process of the artillery in advance.

Now with the task of brigade commander, the drawing has a new purpose.

"The structure of this Type 92 infantry gun is relatively simpler than the barreled guns on the European battlefield. It has more than 120 parts in the whole body, and it is not difficult to manufacture or imitate."

When he said this, the old man also glared at Huang He, who was sitting in front of him pretending to be a good baby. He chose his words and continued:

"And the problem we are facing this time is not big. We only need to solve the gun barrel."

"Who of you knows what the difficulty of making a gun barrel is under the conditions of the current base logistics department?"

After studying abroad for most of his life, Old Wu wanted to do most after returning to the base to pass on his knowledge to all comrades who were eager to learn.

In half a month, the old man taught the technical backbones of the military industrial zone almost every day.

Since the comrades there had a poor foundation, he developed a habit of teaching like coaxing children. When he was not angry, he looked like an experienced old teacher.

But neither Huang He nor Shan Wenbao showed a trace of impatience. Every selfless scientist deserves respect.

After hearing this question, the two looked at each other. Seeing Shan Wenbao, who was afraid of trouble, signaled with crazy eyes, Huang He finally answered the question.

"The first difficulty is rifling. We don't have the conditions to carve it here. It takes a lot of time to do it manually. Even if you, Mr. Wu, teach this craft step by step, the first batch of apprentices will not be able to graduate until next year."

"The second difficulty is artillery steel. If we use the toughening technology we have now, the strength of the gun barrel will definitely not be enough."

"Even if it can be made barely, it is only a consumable. When the barrel explodes, the commanders on the front line will definitely curse again."

The toughening technology mentioned by Huang He refers to: the black-hearted toughening of the ugly country and the white-hearted toughening of Sandezi.

As an old man who has traveled all over the country, Mr. Wu is naturally proficient in these skills. The reason why these two skills are promoted first is to increase the production capacity of artillery shells in the military industrial area of ​​the logistics department.

Although Huanghe can provide a certain number of various types of artillery shells every month, the number is limited by the output of military factories within the system.

Even though the two newly established gun factories have been recognized by the system, there are still only five poor military factories.

Because there is still a big gap in the basic infantry equipment of the Eighth Route Army, artillery shells can only be provided in small batches.

At present, the base mainly uses white cast iron, which is brittle and hard. The shell shells cast with it cannot meet the minimum requirements of turning.

But once these white cast irons made by native methods are toughened, the production of artillery shells will undergo earth-shaking changes.

Not only can the processing performance be improved, the output of artillery shells can be greatly increased. But also the quality of weapons is strengthened, so that the self-produced artillery shells can further meet the needs of the front line.

Once the military factory can increase the output of artillery shells, it will share some of the pressure for Huanghe.

However, there is still good news recently.

Under the leadership of the deputy director, the rear area has successfully developed the first batch of MAS-36 and FM-24/29 production lines.

Although the technology is not mature enough, a small number of firearms have a certain failure rate when used, resulting in the newly established firearms factory not being recognized by the system.

But Huang He believes that the comrades in the rear area will continue to make progress and will one day pass the system's quality inspection. Moreover, being able to produce weapons by themselves is of great significance to the Eighth Route Army. It is not an exaggeration to say that it is a change from a shotgun to a cannon.

French-made Eighth Route Army! The future is promising!

After hearing Huang He's answer, Wu Sixue nodded with satisfaction. He was very satisfied with this young doctor.

"I can take care of the rifling part, using a method similar to hook knife broaching. If the natives of America can do it, there is no reason why we, the descendants of the ancient civilization, cannot master it."

"We have also found a replacement for the gun barrel. I plan to use the axle of the Japanese train as a replacement. That thing is made of high-carbon steel, which is more than enough for the gun barrel."

"It's a pity that the original shells can't be used. The caliber of the new barrel will definitely be larger, and the shells need to be remade."

After scientists reach the level of the Yellow River and Shanwenbao, it often only takes a short time to judge the feasibility of something. Although it is not their professional field, their knowledge reserve is amazing.

What's more, as an engineer who studied in Gaul, Huang He was someone who had close contact with Miss 75. Although he didn't fire a few shots himself, he knew that this famous rapid-fire cannon was made of high-carbon steel technology.

If a large shaft is used to cast the gun body, even if the lifespan is average, it can at least solve the problem of making something from scratch.

The three discussed this idea for a few minutes, and after confirming that nothing was missing, they sent Wang Dexing to find Zhang Wanhe to put forward the request.

After all, the Japanese train axle is not easy to deal with. It is estimated that a certain army will need to conduct an ambush to bring back the materials they need.

But this matter is not too troublesome. The Eighth Route Army often raids railways and knows the movements of Japanese trains very well.

But less than half an hour later, Wang Dexing ran back with a happy face. He opened the door of the laboratory and said excitedly:

"Director! The big shaft will be sent over soon! Get ready! The comrades will arrive in about five minutes."

This result really made the three of them look confused. Someone gave them pillows when they really fell asleep. But this is the logistics department of the Eighth Route Army after all, so it's understandable that things are a little messy.

After a while, Huang He saw a transport team arriving at the entrance of the laboratory. The person leading the team was Zhang Wanhe, whom he had not seen for a while.

As the saying goes, when a fellow villager meets a fellow villager, tears well up in his eyes.

With a smile on his face, Zhang Wanhe hugged Huang He's shoulders and gently hammered him twice. He said with a bit of a bad smile:

"You don't know how long I've been waiting for this day. In the past, you always got supplies for the logistics department, but this time it's finally my turn to show off."

"You can use these two big axes first. If they are not enough, send someone to me. We have four more in the warehouse."

"But what a coincidence. Our workers behind enemy lines just destroyed a Japanese factory some time ago and brought back some things from the train. As a result, they were used today. You are so lucky!"

Hearing Zhang Wanhe's words, Huang He suddenly thought of the decision to passively unlock some time ago, but now that it was inconvenient to check the system, he could only give up temporarily.

"Lao Zhang, thank you. I won't say much more! We will try our best to reduce losses at once. Just wait for our good news."

Zhang Wanhe and others also knew that every second was precious now, so they moved the train axle into the laboratory and left.

After saying hello to Mr. Wu and Shan Wenbao, Huang He returned to his room first. After all, he couldn't help with the initial work.

With no one around, Huang He opened the system interface. Not surprisingly, these train axles are indeed related to the last decision.

"The Pride of Workers Behind Enemy Lines: Current Progress 2/4

Currently in Shanxi Province, a civilian factory has been damaged and forced to cease production.

When the Yangquan Patrol held a birthday party for the captain, they were all wiped out by the Eighth Route Army workers behind enemy lines.

The Taiyuan Arsenal sabotage plan is in progress, and the bridge bombing operation at the Huting stronghold is being planned. "

Although he didn't know the specific situation, Huang He excitedly waved his fist when he saw that the Japanese had suffered a lot of losses.

You all guessed the prototype of Mr. Wu correctly. I specially strengthened it in the book.