In the workshop, the sound of metal collision echoed around, and the hot and blazing steel ingots entered everyone's eyes.
In an instant, all the experimenters and soldiers became excited, and the emotions that had been suppressed for a long time suddenly burst out like a volcano. The top brass of the Military Industry Bureau perked up, and their eyes revealed excitement.
Steel ingot!
This is a formed solid steel ingot, not hot liquid steel.
Steel ingots and molten steel, this is the current method to determine whether electroslag remelting technology is successful. It is simple and practical. Its testing principle is based on the core step of electroslag remelting technology - crystallizer condensation.
"Finally, there is a high-performance gun steel in the true sense..." The cheers of the testers and soldiers around him could be heard in his ears, but Yu Hua seemed particularly quiet, his eyes staring at the red steel ingots on the flatbed transport truck, and thoughts flashed through his mind.
Scenes and scenes of film and television materials and written records about the Anti-Japanese War, I was thinking to myself.
Gun steel, this is the foundation that determines the performance of the gun.
Without high-performance gun steel, artillery with excellent performance cannot be built.
Someone else's cannon can hit ten kilometers, but your cannon can only hit three kilometers, so you will always be beaten without being able to fight back. This is the gap.
The performance of gun steel materials is determined by the development level of heavy industry and metallurgical industry. From the current perspective, Japan's development in the field of artillery or metallurgical industry is much better than China's.
These fields eventually fed back to the Japanese army, establishing a near-absolute artillery advantage for it, covering land and sea systems, with calibers ranging from 50 mm to 460 mm.
However, from today on, the technological advantages established by Japan's basic industrial fields behind the Japanese army no longer exist.
"How is it?" Li Qiang leaned over and asked softly with a slightly cautious expression.
He is a rigorous person and will not celebrate indiscriminately until the formal inspection report of electroslag remelted steel is released.
Although, he already knows how to distinguish between remelted steel and ordinary steel.
Returning local methods to local methods, what the military industry bureau and organizations need is a formal and authoritative report.
The importance and significance of electroslag remelting technology are too important. He must be cautious. You must know that the big cave has been waiting for news since yesterday.
Yu Hua came back to his senses, and after hearing Li Qiang's words, he nodded slightly: "It's done, we're almost there, but we still have to wait for the inspection report to come out."
"good."
Li Qiang took a deep breath and felt confident. He suppressed his excitement and replied, gritting his teeth and waiting patiently.
Not urgent.
There's no rush.
It's been a long time, just wait a little longer.
The cheers were endless. Yu Hua did not celebrate and remained firmly in the middle. After the steel ingot naturally cooled to a dark red state, he ordered samples to be sent for inspection. The two soldiers quickly followed the pre-trained process and cut off a fingernail from the top of the electroslag steel ingot.
Metal blocks of different sizes are then sent to a specially set up inspection room in the steel plant for inspection through microscopy and titration.
The microscope can obtain the metallographic structure of the sample, and the titration method can obtain the chemical composition ratio of the sample.
Of course, due to the low level of inspection equipment and the single inspection method, the accuracy of the inspection room is not high, far less than the inspection accuracy of later generations.
The electroslag steel samples were quickly sent for inspection. The noisy and lively workshop gradually became quiet. All the testers and soldiers maintained discipline and stopped making any noise. The senior officials of the Military Industry Bureau stared at the naturally cooled dark red electroslag steel ingots and were forced to become restless.
He calmed down and waited silently for the final result.
Twenty minutes later, the inspection room completed the inspection and analysis of the metallographic structure and chemical composition ratio of the sample, converted a series of inspection and analysis results into written form, sent them to the electroslag furnace test workshop, and handed them over to the chief engineer and the first smelting test
Yu Hua is in charge.
The final moment of fate has come.
Looking at the paper report sent to Yu Hua, the electroslag furnace workshop was silent. Everyone, including Li Qiang, held their breath and refused to make any sound. They understood that this inspection report would determine the outcome of this test.
Final Results.
Yu Hua stood in the middle, looked around, with a solemn and solemn expression, opened the paper report signed by the person in charge of the inspection room and the operator, and read it in public: "Now, I am announcing to everyone the first smelting of the electroslag remelting test furnace.
test results."
"The test sample was inspected by microscope and titration method. The longitudinal and transverse directions of the sample were ground and polished for observation. The observation found that there were no macrosegregation defects such as inclusion aggregation, shrinkage holes and porosity, and it had high structural density and composition.
The uniformity, the surface of the sample is smooth, and the proportions of harmful elements are as follows: carbon content is 16%, manganese content is 9%, silicon content is 58%, phosphorus content is 028%, and sulfur content is 026%, all of which meet the requirements of the first smelting test.”
The words were calm and powerful, spreading around like a tide, and the detailed inspection data of the samples entered everyone's ears.
After hearing Chief Engineer Yu Hua's last words, everyone around him realized something and immediately became excited.
"Everyone, I think we can celebrate. I announce that based on the above test results and sample inspection data, the first smelting test of the electroslag remelting test furnace passed. You have created a miracle. In the most backward place in the world,
The most advanced cutting-edge steel in the world!" Yu Hua's voice gradually became louder, containing some personal fluctuations of emotion, and he smiled and praised the cutest people in front of him.
In the poorest and most backward areas in the world today, the most advanced and outstanding gun steel in the world was born.
Success!
Success after rigorous scientific testing and processes is by no means a success in a subjective sense!
The passing of the first smelting test means that electroslag remelting technology has been ignited, and the last gap in the base's basic industrial system has been filled.
From now on, things will change, and offense and defense will change.
At 9:10 am on September 28, 1937, the first smelting test of the electroslag test furnace passed at Yancheng Liushugou Iron and Steel Plant, and the electroslag remelting technology was declared successful.
There is no doubt that Yu Hua's words were like a bombshell. The emotions that all the testers and soldiers had suppressed before broke out again with the announcement of the results of the first smelting test. Some soldiers burst into tears, and some testers were gearing up for it.
The heavy artillery couldn't wait, and more people hugged each other, as if celebrating a victory in a battle. For this moment, for success, they had fought hard for countless days and nights.
The senior officials of the Military Industry Bureau were excited, showed bright smiles, clapped their hands and applauded for passing the first smelting test.
Yu Hua looked at the lively scene in the electroslag furnace workshop with a smile on his face and said nothing, quietly enjoying the moment.
This feeling is quite good.
As one of the many "Zero One" technical members born in the hands of Yu Hua, electroslag remelting technology has a completely different identity and status. The greatest application value of this metallurgical technology lies entirely in the development of advanced artillery and various types of heavy weapons in the military field.
As the first electroslag steel ingot born during the Anti-Japanese War, its military application value cannot be measured in terms of money.
"All of you, salute Comrade Chief Engineer of the Electroslag Furnace!" At this moment, Li Qiang, the head of the Military Industry Bureau, suddenly spoke up. Li Qiang's back was straight, his expression was solemn, his eyes were reddish and moist, and he was standing in the most standard manner.
In a military posture, he raised his right hand and saluted Yu Hua as a military salute.
The loud voice trembled slightly. As a top student studying in the Soviet Union, no one understands the significance of electroslag remelting technology to the organization better than Li Qiang.
No words can describe the emotions in his heart. As a soldier, he can only send a military salute to remember Yu Hua's dedication and contribution with his heart.
There was a sudden silence in the factory. Looking at Yu Hua, who was not tall among the crowd, all the senior officials of the Military Industry Bureau, all the test personnel and soldiers stopped what they were doing.
Everyone stood at attention, remained silent, straightened their backs, faced the young and great chief engineer in a military manner, and uniformly raised their right hands to show their highest respect and gratitude.
More than 95% of people are unable to know Yu Hua's true identity and name, but this does not affect their heartfelt respect and gratitude.
Without this chief engineer, there would be no electroslag furnace, no oxygen blowing furnace, no chemical plant, nothing...
"This is what I should do."
Yu Hua looked at the scene in front of him that was very similar to the one when the oxygen blowing furnace passed the first smelting test. He smiled, responded modestly, and then arranged various matters in an orderly manner: "Okay, that's it, each test unit returned to work and conducted electrical testing according to the test process.
The slag remelting trial production operation, Comrade Zhu, the trial production operation will be left to you."
The first smelting test is successful, and then the electroslag remelting trial production operation will be carried out. If there are no problems in three consecutive productions, then the electroslag test furnace will be declared completed and put into production, entering the formal production state of 5 tons per month.
5 tons per month, this is the output data established after various trade-offs and considerations. There is no way, the production operation of the electroslag resmelting furnace consumes too much electricity. Once the furnace is started, the entire Liushugou Industrial Zone will be shut down to make way for it.
Without power resources, Liushugou Industrial Zone cannot yet support this electricity-devouring beast.
"Yes!" Zhu Rui, who was staying nearby, responded loudly, quickly took over the command, and started arranging trial production operations according to standard procedures.
"Bureau Li, this is the official inspection report. Please report the good news to the cave dwelling." Yu Hua handed the inspection report to Li Qiang.
"good."
Li Qiang took a deep breath, took the formal inspection report, turned around and left the electroslag furnace workshop, and headed to the cave dwelling as quickly as possible.
After making a series of arrangements, Yu Hua looked at the electroslag steel ingots on the metal flatbed truck. The gun steel material had been made. Next, start making the gun barrel!
Soon, a Red Star tractor head was arranged to enter the electroslag furnace workshop, connect to the traction hook of the metal flatbed truck, and pull the electroslag steel ingot weighing 1.5 tons out of the steel plant and go straight to the machinery manufacturing plant.
The long night has passed and dawn has arrived.
Forward, 105mm heavy artillery!
…
Machinery manufacturing plant.
"It's so beautiful, so beautiful. I can't believe that there is steel of this quality. Its comprehensive performance far exceeds the high-quality gun steel specially produced by Krupp." In the rough machining workshop, Professor Zhuang held up a magnifying glass in his right hand and carefully examined the steel ingot in front of him.
The surface and incision parts of the electroslag steel ingot were noticed and the most sincere and pragmatic evaluation was given softly.
Far superior to the high-quality gun steel produced by Krupp!
As a top expert and professor, Zhuang Qianding has been exposed to things that are beyond imagination. He was once invited to visit the Krupp Steel Plant and saw its gun steel production line. There is no doubt that what Krupp said
The gun steel produced is definitely the most advanced and cutting-edge gun steel in the world.
However, today he saw gun steel that surpassed Krupp in the northern Shaanxi base area...
"Yu Hua, your achievements in metallurgy have reached a level that even the West cannot reach..." Zhuang Qianding turned to look at the young student beside him, looked at the young face, and sighed softly.
Young and beyond the world.
Is this genius?
Yu Hua smiled and shook his head: "Professor, you are exaggerating. I am just standing on the shoulders of giants."
"Not everyone is qualified to stand on the shoulders of giants." Zhuang Qianding smiled and turned to look at the electroslag steel ingot: "Let's start, let's build a cannon that can save the country and the nation."
After the words fell, he made a gesture.
The ready rough machining workshop immediately started operating like a precision-operated machine. A five-ton crane lifted the electroslag steel ingot and sent it to the heating furnace, where it was reheated to about 1,100 degrees Celsius. After the heating was completed, the steel ingot was taken out.
Sent to 1000kg air hammer anvil for forging processing.
The comprehensive performance of electroslag steel ingots processed through the forging process will be improved by about 10%, the internal structure will be denser, and the mechanical properties will be further improved.
"Boom! Boom! Boom!" Not long after, the sound of the hammer head hitting the hot electroslag steel ingot was heard. The short and thick steel ingot was deformed by heat and gradually elongated.