After the people on top of the blast furnace loaded the last batch of coke, Han Cheng shouted to the previous year. This was the first time Han Cheng used the modified blast furnace to make steel. This time, he was making steel specifically for grenade bombs. The requirements were actually
It's not that high. What's really demanding is the heavy barrel. This can't use ordinary iron ore. It needs to be directly melted with a small Japanese barrel, and then rare metals are added into it.
The iron ore in Shanxi is poor iron ore, and the ore contains a lot of impurities. It takes a lot of effort to actually refine it. Therefore, it is not suitable for the Eighth Route Army, which has backward technology and low production efficiency. It is the only practical method.
It is to resmelt and process the discarded gun barrels on the battlefield.
"Fire! Come down!"
Han Cheng shouted to the people above that it was actually very difficult to load the blast furnace once last time, but there was no way. This was the most intuitive way. According to calculations, if there are no problems, the requirements can basically be met.
The person hanging above came down, and below are the completed clay molds, which are made according to the actual size. They can be directly installed on the prepared wooden handles. Many of these clay molds have been made, as long as they do not leak.
It's basically okay if there are no cracks.
The fire below slowly ignited, and the furnace began to burn. The chimney shot up into the sky and began to release black smoke. There was no way to do it. That's what blast furnaces are like. They still burn coal. As for exposing targets, there may be a certain discipline, but the Japanese
Planes will not fly over your head every day.
"Just watch and light the fire. I guess I don't have any questions."
After Han Cheng finished all this, he found that he was redundant, otherwise he would not have been unable to find things to do. Regarding the furnace for heavy gun barrels, it is actually just a small crucible. Put the gun barrel in the crucible and wait for it to melt.
The waiting time is very long, sometimes it takes a whole day of patience, otherwise the materials will not be melted.
Next to it are rare metal materials that have been cut up by themselves. These things are really difficult to get. If you put a pile of coal gangue down, it will come out as big as two fists. Is this really rare? But this is also amazing in Hancheng.
The idea of using rare metals on a large scale is not worth it in terms of cost or time.
The only things that can be smelted under existing conditions are ferrovanadium and a small amount of titanium. The requirements are too high, and our own equipment is really not up to par. Although titanium can already be smelted in 1947.
came out, but now it is 1938, and the difference is not just a little bit, but a lot worse. Whether it is a blast furnace or something else, it is difficult to compare with a few years later in terms of output.
"This little gadget is really killing people. I hope these things are really useful, right?"
Han Cheng doesn't know if the metal made in this way is really useful. At least in other aspects, these things are used in high-precision technology. It is actually a pity to use such a good thing on the barrel of a gun.
Yes, it's just that there is no other way. That's all that can be extracted now, which can make a relatively large performance optimization of the barrel.
When all the metals are fused together, Han Cheng doesn't know if he can succeed, at least he can't see any specific performance yet. Everything will have to wait until the barrel is completely finished and the performance test can be done to determine this.
If it were left to future generations, this gun would be purely handmade and a perfect combination of new alloys. After all, it is a heavy gun barrel, and its performance and quality must be guaranteed to some extent. It cannot be too heavy or too light.
The specific situation will not be known until the temperature drops and all the blanks are manufactured. The only thing left is to wait for time.
"Chief of Staff Han, the regiment leader wants you to go to the regiment. He said that the brigade commander has brought people here."
"You ask the captain and the others to wait. I'm busy with important things here and can't get away."
A man came over and pulled Han Cheng away. How could Han Cheng know anything? But the most important thing now is to wait for these alloys to be finalized.
"These are people from Yan'an, not ordinary people. You have to know your priorities!"
"When people from Yan'an come, I have to finish this experiment, and this experiment is very important."
Han Cheng really doesn't have time to do any messy things now.
"No matter what is important now, you have to come with me!"
The visitor dragged Han Cheng away without hesitation. Han Cheng didn't even have a chance to add a piece of coke to the bottom of the crucible. Han Cheng was really angry along the way. If there was something he couldn't wait to talk about later, he had to talk about it now.
"Oh, why don't you let the comrades in Yan'an take a break first? If something has to be solved today, why not tomorrow?"
"You have to understand that this is what the head of the group forces to ask you, not me. No matter how big the matter is, you have to finish it first before doing other things of yours. I'm not saying, you are right
My own future is a little too irresponsible. If you are capable, you should have a better future."
When Han Cheng heard this, he smiled bitterly. His family background was too complicated, so there was no future. It would have been nice if he had not been arrested and shot. His brother, who was the spy chief of the Kuomintang, and his sister from the government department, also wanted to
Add in a brother-in-law who is in the army, right? This situation is actually very dangerous. Can you just be more careful?
"Report!"
"Come in!"
Han Cheng was dragged directly into the battalion commander's office, where the regiment commander and several unfamiliar comrades were talking in the room.
"Let me introduce to you, this is the inventor of radio, Han Cheng, Chief of Staff Han. Because he was planning to build a repair shop recently, he was delayed for a while."
As the group leader said this, he pinched Han Cheng's arm hard. Han Cheng did not dare to say a word and could only say hello to everyone.
"This is a comrade who came from Yan'an. I won't introduce him. Let these comrades tell you for themselves. These comrades will learn from you how to make a radio station in the past few days. You just need to leave it to them. What else?
, there are several radios here, all prepared according to your requirements, and four batteries."
"Oh, this is okay, I understand."
Han Cheng nodded. Han Cheng, who was now covered in black and gray, looked at the people who came. The people who came were white and fat, which showed that the food was quite good. There were a few people in the base whose faces were not yellow.
Caused by malnutrition.
"I am Han Cheng. Please just bring your things and come with me. The commander of the third battalion of the radio will move directly to the warehouse. You will not be in contact until you reach a certain level. Now we will arrange a place for you to stay first and give you some food by the way.
Look at the surrounding environment. Tomorrow, I will teach you theoretical training. Once the theory is mastered, anything can be turned into a radio station, as long as the components are suitable."