my scientific age

Chapter 254 The official rifle in imitation!

Hua, at present, the prototype unit of Yu's Seven Pagodas and submerged arc welding machines have been delivered to Yancheng. According to your technical suggestion, I will build my first sulfuric acid plant. This letter is to explain the current situation of Yu's Seven Pagodas. The second is to seek technical help.

Long before the Yu's Seven Pagodas Project, the base area had launched a pre-war campaign plan to deal with the increasingly tense war situation. The main content is to establish a certain level of basic industry and produce weapons and ammunition, which is divided into three steps.

The first step is to build a sulfuric acid factory, a nitric acid factory, and a small explosives factory. built within.

The second step is to realize the mining of iron and steel, blast furnace, coke, coal and iron ore. It is expected to be one year. An electric furnace steel plant has been established, with a daily output of 240 kilograms of electric furnace steel.

The third step is to realize the production of weapons and ammunition for light weapons such as grenades, rifles, mortars and supporting ammunition. It is expected that within one year, the current arsenal can only produce semi-finished grenade shells, and the rest of the targets cannot be produced, lacking drawings and machining equipment.

I detailed five technical issues, metallurgical technology, seamless steel pipe technology, machining equipment, power supply, rifle drawings and mortar paper.

The Japanese invaders have never broken China's heart, and the situation in Peiping has become more and more tense. Chen is very grateful for Wanghua's constructive suggestions or technical help.

General Directorate of Military Industry, Chen. — July 1937, 7.

The letter is signed with a red square seal to verify the authenticity of the letter.

"It turned out to be a letter from the brigade commander. It's interesting, but unfortunately, there is probably no group commander named Li Yunlong here."

After Yu Hua read it carefully, it was both unexpected and interesting. He took out a matchbox with his right hand, ignited a match to ignite the secret letter, and thought to himself, "As expected of a teammate of God, in a month and a half, the industry in the base area has become very impressive, even though The scale and level are not high, but at least it is moving forward.”

go ahead.

This is hard and serious progress, a visible progress.

Although the industrial level and scale of the base area is pitiful, the annual output of the explosives factory is only 87 tons, and the annual output of electric furnace steel is only [-] tons.

But what about this?
In one and a half months, such results can be called the speed of China.

It is worthy of encouragement and praise.

Now, the single-leaf boat of the base area industry has begun to set sail, heading for the magnificent sea full of dangers and opportunities.

And all I have to do is to help this flat boat repair the mast and provide a better paddle.

In the office, the orange flame continued to bloom, and the stationery carrying the confidential information slowly burned, turning into ashes repeatedly.

"The metallurgical technology is mainly coking, pig iron smelting and iron and steel formulations. Pig iron smelting and iron and steel formulations are not in a hurry for the time being. The coking technology can be provided first. The seamless steel pipe needs to be processed by the rolling mill, and the rolling mill has to wait for German machine tools. The problem is that for domestic electricity use, it is better to say that high-power generator sets must be used for industrial electricity, or a small thermal power plant must be built in one step. If a thermal power plant is to be built, the blades of the steam turbine need to be involved. This thing not only requires high-strength steel, And precision machining..."

After the stationery was burned, Yu Hua took out a piece of scratch paper, silently pondered the five technologies mentioned by the brigade commander, and conducted a feasibility analysis and thinking: "The final rifle drawings and press attack papers are not a problem, I think the brigade commander The long-term dilemma should be what rifles and mortars to make, in fact, bullet production is the top priority."

Although the bullet is small, more than 100 techniques and processes are involved, which is much more difficult than making a rifle.

"The production of bullets is not panicked for the time being, and the problems are solved slowly one by one. First of all, I have to clarify the first point. As Yu Hua, I do not know the German-made machine tools and equipment that Zhang San is about to donate. Based on this premise, I can plan and arrange. I will make technical and theoretical suggestions, but I can't give substantive equipment." Yu Hua's face was serious, since the organization actively seeks technical help, there is no reason not to help, but how to help requires a clear premise.

I am Yu Hua, not Zhang San.

You cannot violate your own identity.

With rigorous thinking and clear rules, Yu Hua stared at the five technical issues written on the draft paper, and focused on the first metallurgical technology.

Obviously, the metallurgical technology involved in the base area is far less high-end and extensive, mainly covering three contents, coking, pig iron smelting, and steel formulation.

At this stage, it is unreasonable to handle pig iron smelting and iron and steel formulations in my own capacity, so I directly deny it, and only coking technology can help.

Coking is the process of converting dry coal into coke by physical heating. The temperature is about [-] degrees Celsius. The principle is thermal decomposition and coking. The core of technology lies in thermal decomposition and coking.

The question is, from the technical process level, how to deal with thermal decomposition?
Simple, get on the stove.

A furnace that can be heated to a mere [-] degrees Celsius will not melt by itself, thermal decomposition and coking are carried out inside, and the material transformation of coal from coke is completed. It can be called a coke oven.

A coke oven alone is not enough, a device for charging coal and coke removal, a conveyor belt and a coke pushing device are required.

Time passed slowly, and Yu Hua quickly designed a set of coking equipment that is very suitable for the base level according to the coking principle. The coke oven carbonization chamber has a volume of 5 cubic meters, and the coke output easily meets the daily output of 5 tons of molten iron.

This early coking method is not difficult at all. What is difficult is large-scale coking, which requires high efficiency and high output. It has very strict requirements on various aspects of technology and technology, and the raw materials are even more refined.

After simply getting the coking technology, Yu Hua turned his attention to the next second technical problem-seamless steel pipe.

After taking a look, Yu Hua silently wrote down the key equipment required for seamless steel pipes, as well as the machine tool equipment that manufactures such key equipment, and then...

There's no after that.

It's okay to talk about technical and theoretical things, but for the substantive equipment, I can only say sorry.

The third technical problem is the lack of mechanical processing equipment in the base area. Just, Yu Hua gave a preliminary answer that can be implemented. Use electric furnace steel to make simple machine tools, and then use this simple machine tool to manufacture complete machine tools. .

The conditions are very harsh and time-consuming and labor-intensive, but the victory is a feasible solution. After all, all the high-precision machine tools and equipment of human beings are all upgraded in this way.

The fourth question, power supply, Yu Hua's answer was to imitate the generator. After the problem of the machine tool was solved, the high-power steam turbine generator set was launched to build a thermal power plant in one step.

The base area is backed by the Ikezhao League. Most of the coal mines are open-pit mining, and there is no shortage of coal.

The fifth question, after weighing and considering, Yu Hua suggested to imitate the official rifle and 60mm mortar.

(End of this chapter)