Outside the laboratory, Director Wang Honghai kept walking around, glancing at the closed door from time to time.

A lot of cigarette butts have been thrown under my feet. This time. The door to the laboratory. Suddenly opened.

Wang Honghai hurriedly walked over. Seeing Jiang Yan who had come out, he grabbed his hand. With a nervous face, he asked, "How is it, is it done?" ”

Jiang Yan yawned, rubbed his red eyes, and said slowly: "After preliminary testing, all indicators basically meet the requirements. ”

"You mean we succeeded." Director Wang asked Jiang Yan in a slightly trembling voice.

"It can be said that if you want specific performance indicators, you need more professional testing, at present, we can't detect in the institute, and we can only go to the Iron and Steel Research Institute for such testing, where the equipment is more advanced, and the test results are more accurate."

Jiang Yan yawned a lot after saying this.

Looking at Jiang Yan's tired look, Wang Honghai asked with concern, "Are you okay?" ”

Hearing the director's words of concern, Jiang Yan waved his hand.

"It's okay, it's just a little sleepy."

Isn't that sleepy? I worked for a week for this thing, and this time I didn't close my eyes for two days and two nights, and now I can almost fall asleep standing up.

"In this way, you go to sleep well, this good body is the capital of the revolution, leave the testing to me, I will go to the Iron and Steel Research Institute to test."

Jiang Yanqiang cheered up and said to Wang Honghai: "Let's go together!" ”

"Little Jiang, just listen to me! Sleep well, and I'll let you know as soon as the test results come out. ”

"Xiao Gong, Xiao Gong, go and call Mr. Jiang's car over and send him home to rest."

After arranging all this, Jiang Yan was stuffed into the car for no reason.

Seeing Jiang Yan's don't leave, Wang Honghai hurriedly asked his secretary to arrange a car to rush to the Iron and Steel Research Institute with a little warm steel.

Director Wu of the Iron and Steel Research Institute and Wang Honghai are old acquaintances, and after he entered the research institute, he went straight to his office.

After knocking on the door and getting permission, Wang Honghai couldn't wait to walk in, and saw Director Wu, who was sitting inside, put the steel block he was carrying on his desk.

"Lao Wu, come on, this is the new alloy steel we just researched, please test it."

Hearing Wang Honghai's words, Director Wu pushed his glasses, glanced at the alloy on the table in a little surprise, and asked Wang Honghai.

"Lao Wang, you tell you the truth, what is this alloy steel for?"

"This," Wang Honghai hesitated when he heard Director Wu ask.

"Hey! What else do you have to say, you still don't believe in my character, and you're still afraid that I won't give you anything. ”

Wang Honghai heard Director Wu say this, so he no longer concealed it, and said directly: "A while ago, our major metal research institutes held a meeting not to study artillery steel and solve the problem of artillery barrels in the army. ”

Hearing Wang Honghai's words, Director Wu's eyes widened, looked at Wang Honghai a little incredulously, and pointed to the piece of alloy on his desk.

"It's cannon steel."

Wang Honghai nodded firmly.

Director Wu, who received Wang Honghai's affirmative reply, was completely unable to hold back, and stood up directly from his seat.

After returning from the last meeting, Director Wu did not delay at all, and began to organize scientific researchers to start publicizing when he returned to the institute.

My own research institute has concentrated most of the talents who specialize in the study of alloy metals in the country, and some of them are scientists who have returned from abroad.

Director Wu, who came back to his senses, seemed to have thought of something, so he hurriedly asked Wang Honghai.

"This shouldn't have been researched by Jiang Yan, the chief engineer of your research institute!"

"Yes, he researched it, let me tell you, he studied it for about a week, and this food and accommodation are basically in the office, this is really a desperate Saburo, and this is accidentally made out."

Hearing Wang Honghai's words, to put it in his heart, now Director Wu really wants to slap him twice, which is too shameless.

However, in order to further confirm, he still carefully looked at the piece of alloy on his desktop, and it really looked like this thing.

This cannon steel is different from ordinary steel, he has high requirements for steel, otherwise his entire research institute has not studied it for so many years.

You know, when the barrel is discharged, it is under tremendous pressure.

When firing, the barrel of the gun is subjected to complex stresses. Due to the firing parameters (such as the initial velocity of the shell can reach 500~3000m/s), the action and impact of high temperature, high pressure and high-speed gunpowder gas on the pipe wall, and the extrusion of the shell on the pipe wall, form a high tangential stress; In addition, the surface of the body tube is subjected to alternating rapid heating (raising the temperature to more than 710°C at a heating rate of 10°C/s) and rapid cooling (10°C/s), which causes repeated phase transitions of austenite and martensite in the structure of the steel, forming a large microstructure stress and thermal gradient. The harsh service conditions put forward high requirements for the steel used for the barrel of the gun, so the steel should have the following properties: high transverse proportional limit σp or high yield strength σ0.1, no permanent deformation during firing, high transverse room temperature and low-temperature toughness of -40 °C, no brittle fracture during firing, low crack growth rate, high cycle fatigue times, so as to have a long service life. In order to make the steel for the body tube not soften the chamber under the firing conditions, it should also have high high temperature strength.

Therefore, so much comprehensive data can prove that this kind of steel is not easy, and the countries in the world that can produce cannon steel that can make cannon barrels can be counted on one hand. This cold statement has been studied, and I still can't accept it.

But this is a good thing, if it is really studied, the country will never be choked by others again.

"Old Wu, this is some of his research materials on steel, you can take a look." As he spoke, Wang Honghai handed a notebook that Jiang Yan gave him when he went out to Director Wu.

Director Wu took the notebook he handed over and sat there and looked at it carefully, the more he looked at it, the more shocked he became.

This notebook records a complete set of experimental procedures, as well as some dense experimental data and balanced molecular formulas, and the joy on his face can't be hidden.

"Xiao Qian, immediately notify the laboratory department to prepare for the high temperature test, notify the strength test room, prepare the strength test, and prepare the stress twisting machine, the speed should be fast, and all those who are testing will give way."

Secretary Xiao Qian had never seen his leader like this, but after answering the word, he hurriedly ran down to arrange everything.

At this time, Jiang Yan didn't know that because of his piece of steel, the entire steel research institute was jumping, and he was now dating Zhou Gong's daughter!

Grandma also came in to see him several times, and when she saw him sleeping, she didn't disturb him.

When he got off work in the evening, Jiang Sirui also came over to look at Jiang Yan, knowing that he had been busy in the past few days, and after chatting with his grandmother for a while, he returned to his home.

(End of chapter)