Siheyuan starts from a better life

Chapter 259, New Formula
"By the way, Rarity, is that senior Zheng Yang still looking for you?"

"No, last time he came to me, he was warned by Mr. Cao, and he didn't come again."

"I said it! I thought it was Jiang Yan who made the move! Teacher Cao made the move. Does your family, Jiang Yan, know about this?"

Sun Xinyi continued to ask.

"Yes, I told him."

"Then he doesn't have any reaction." Sun Xinyi was even more curious after hearing Jiang Sirui's words, and then asked another question.

"Why didn't you make a move? It's not that Mr. Cao went to warn him."

"That's right! Teacher Cao is a classmate of your Jiang Yan's."

"But to be honest, everyone in our dormitory hates this Zheng Yang. He's too pretentious. He can't compare to your Jiang Yan."

"That's right, our family Jiang Yan is so nice." Jiang Sirui was the first one after saying this, and he was quite proud.

There is a reason why Jiang Sirui is so proud. Some people have not reached Jiang Yan's current level after being around for many years, but it is precisely because of this that Jiang Sirui's standard for finding boyfriends in their dormitory is high.

"Student Jiang, I have your letter." At the door of the dormitory, Jiang Sirui was stopped by the dormitory aunt and handed her a letter.

"Who will write me a letter!" Jiang Sirui was confused when he got the letter.

But the next moment she did think of Jiang Yan who was on a business trip.

Thinking of this, she quickly looked at the envelope.

"You still have acquaintances in Bingcheng!" When Jiang Sirui was looking at the envelope, she was also seen by Sun Xinyi and Zhang Tingting who were following her, and Zhang Tingting asked.

"No," Jiang Sirui casually said while looking at the envelope.

"Ruirui, do you think Jiang Yan wrote you a letter?" Sun Xinyi who was next to him interjected.

"Hi! Guess what, just open it and have a look."

As Zhang Tingting spoke, she wanted to take the letter from Jiang Sirui.

But being avoided by Jiang Sirui, he took the envelope and walked quickly to the dormitory.

Seeing Jiang Sirui leave, Sun Xinyi and Zhang Tingting glanced at each other and quickly followed them. They also wanted to know who wrote the letter to Jiang Sirui.

Early the next morning, Guo Jianjun came to ask Jiang Yan and the others to have dinner together. After breakfast, the three of them came to the R&D workshop.

Jiang Yan was busy in his office, and Guo Jianjun took Xu Damao to familiarize himself with his work site.

Last night, after Xu Damao left, Jiang Yan came to his own space.

He let Guo Jianjun get a full set of AK-47 drawings and SKS semi-automatic rifle drawings.

At present, the Type 47 and [-] firearms produced by the [-] Factory are AK-[-] and SKS semi-automatic rifles that imitate SL. There are some drawings of these in the factory.

However, if you want to study this drawing, you need to authorize it personally from the factory manager. This thing is a secret in the factory.

If it weren't for Jiang Yan's qualified confidentiality qualifications, Director Zhao would not have easily given him the drawings.

And asked Jiang Yan to protect this blueprint.

When Jiang Yan was studying these two blueprints in the space, he also sorted out some of the blueprints of the Bayi-style firearms he found on the Internet.

Combined with these three-point drawings, Jiang Yan began to study. It is said that when he was studying the Bayi-style rifle, its shooting accuracy borrowed part of the SKS semi-automatic rifle.

According to the information obtained by Jiang Yan, this 81-type 7.62mm automatic rifle adopts the principle of air-operated automatic, and the locking mechanism is a rotary bolt.The firing mechanism adopts the hammer rotary firing machine.It can not only shoot semi-automatically, but also shoot in bursts, and is equipped with a fixed grenade launcher on the muzzle that has the functions of noise reduction, flame reduction, braking and anti-jumping.The bayonet it is equipped with is detachable and can be used as a dagger after the bayonet is disassembled.In addition, it can also launch killing, armor-piercing, incendiary, smoke bombs and 60mm anti-tank grenade with live ammunition, and can also launch 40mm grenade with live ammunition.

Moreover, the Bayi Type has an empty magazine hang-up mechanism. The so-called empty magazine hang-up means that when the bullets in the magazine are fired, the bolt will automatically stop at the back, so that the shooter can replace the magazine and load it in time.The light machine gun is equipped with the same hang-up mechanism. When shooting with a magazine, it can play the role of hanging up with an empty magazine. When shooting with a drum, it can’t play the role of hanging up. However, the machine gun has a strong continuous firepower and a high temperature rise of the barrel. The machine gun can be manually hung up during the battle gap to speed up the cooling of the barrel to make up for the defect that the barrel cannot be replaced quickly.When shooting, the gun must be pulled back once, then it can be loaded and loaded to continue shooting.

Good features Jiang Yan must keep them. As for his ones, the structure is not advanced enough, there are not many new materials and new processes, the installation of optical sights is not required, and the appearance is not even distinctive. Jiang Yan will improve these problems one by one. .

After coming to my office this morning, I started to study again.

"Jiang Gong, look at it, the copper is covered on the steel, and it's not evenly covered."

While Jiang Yan was working hard on his research, the door of his office was pushed in. Jiang Yan looked up and saw Hu Dahai walking in.

Seeing Hu Dahai coming in, Jiang Yan quickly covered the drawing he was looking at with a piece of paper.

Jiang Yan brought it over, Hu Dahai brought it over and covered the copper and just looked at it.

He took this piece of so-called copper clad steel. The copper clad on it is extremely uneven, some are light in color, some are dark in color, and it does not have the unique gloss of copper.

"Tell me the detailed steps of your production."

Jiang Yan took the so-called copper-clad steel and asked Hu Dahai in a deep voice.

Hu Dahai heard Jiang Yan's words, and told Jiang Yan the detailed steps of his production of copper-clad steel.

The copper pouring steps he mentioned are basically the same as what Jiang Yan told him, so where did this problem arise? Jiang Yan just fell into deep thought while playing with the so-called copper pouring in his hand.

In his mind, he went through the steps Hu Dahai said repeatedly. After repeated several times, Jiang Yan felt that there was no problem with this step.

Thinking of this, Jiang Yan had an answer in his heart, and said to Hu Dahai: "Give me the chemical agent for copper pouring and let me have a look."

Hu Dahai stopped at Jiang Yan's words, turned around and left Jiang Yan's office. After a while, he came over with a bottle.

Seeing the chemical drug, Jiang Yan knew that the problem was with this drug.

"This medicine is wrong." Jiang Yan said something.

"No?" Hearing Jiang Yan's words, Hu Dahai was full of doubts.

"According to this recipe, prepare the contents inside."

After Jiang Yan finished speaking, he wrote out a formula on his desk.

The formula written by Jiang Yan is the formula of the well-known Q/YS.112 electroless copper plating solution in later generations. Jiang Yan and his factory almost used this chemical formula to produce copper-clad steel plates.

"This is a formula for an electroless copper plating solution. It doesn't need to be solved, and it is quite convenient to try."

When Jiang Yan handed Hu Dahai the recipe, he explained.

Hearing Jiang Yan's words, Hu Dahai didn't ask any more questions, and walked out of Jiang Yan's office with this recipe.

(End of this chapter)