The nickel-manganese material in the glass bottle weighs about fifty grams. Obviously, in the 1937 era, this metal, which was very common in later generations, was expensive, and the outer packaging was all made of glass bottles.
After waiting for so long, I finally got two crucial materials that were urgently needed.
For Yu Hua, there was no way to obtain the nickel-manganese metal that was highly controlled by the National Government. Of course, if he wanted to, he could go to Tianjin to find Zhang Zizhong, but Yu Hua did not want to contact Zhang Zizhong too much.
Respect, but not close.
"Thank you, how much is it?" Yu Hua took the two glass bottles, thanked Lin Wan, and asked.
"No money, it's given to you by the organization." Lin Wan shook her head. Although nickel and manganese are expensive, the quantity Yu Hua wants is extremely rare, adding up to only five yuan.
Of course, if you convert the two materials into prices per ton, they are ridiculously expensive.
50 grams of nickel, 3 oceans, is equivalent to 60,000 oceans per ton.
50 grams of manganese, 2 oceans, equivalent to 40,000 oceans per ton.
What is expensive?
That’s it!
The reason why nickel-manganese materials are so expensive is mainly due to high foreign demand and China's lack of nickel resource exploration and mining capabilities. More than 90% of the country's nickel-manganese ores are mined by foreign companies for export and to earn foreign exchange, causing prices to remain constant.
Staying high.
Of course, the Nationalist Government has no plans to change this. Not only is it not prepared to change, it is even happy to see this happen, because the higher the domestic price of nickel and manganese, the higher the tax will be.
You can’t use it yourself, there are no mining costs, and you can collect generous taxes on exports, so why not?
"Say thank you to those comrades for me, Jin Yu. This is what I just wrote. Please give it to Mr. Wu along with this technical information and the technology transfer contract."
When Yu Hua heard these words, he nodded and did not continue to struggle. He placed the two glass bottles on the table, opened the drawer, took out two documents, compiled the articles he had just written on the table, handed them to Lin Wan, and said with a smile.
: "I have already signed the technology transfer contract. When Mr. Wu signs it, the technology of Yu's Seven Towers belongs to the organization, and the technical information is very important. As for the third article, it is my technical advice on establishing a sulfuric acid industry in the base area, regarding technical difficulties.
I have written all the questions and problems on it so that we can avoid detours."
"good!"
When Lin Wan heard this, her face immediately became serious, and she immediately understood the importance of these three documents. She took the three documents solemnly with both hands, and was about to turn around and leave. Suddenly she realized something, turned around, looked at Yu Hua, and was silent for a second.
Asked: "Are you ready to leave?"
"Well, it's almost time. I'm going to leave tomorrow morning. I have to trouble you with the remaining work. You know, learning is my pursuit." Yu Hua smiled and did not refuse the question, nodding in affirmation.
It was late May, and towards the end of the month, Yu's Seven Towers research and development project ended one day ahead of schedule. Yu Hua was preparing to return to Peiping to prepare for the upcoming life in Tsinghua Park.
I entered Tsinghua University in June, and the Marco Polo Bridge Incident broke out on July 7. Around August, the examination for government-sponsored students studying in the United States will be held in Nanjing. Time is very tight.
After hearing this, Lin Wan fell into silence again. She stared at Yu Hua with a pair of jewel-like eyes. After three seconds, she nodded seriously: "I will try my best to catch up with you. See you in Tsinghua University, Yu Hua."
There is no reluctance, no sadness, no little daughter attitude, everything seems free and natural.
"See you at Tsinghua University, Jin Yu." Yu Hua smiled.
The bedroom door closed and silence returned.
After Lin Wan left, Yu Hua turned to look at the two glass bottles on the table: "It's better to choose a better day. Let's use this evening to modify a micro electric furnace to make armor steel samples. This smelting technology is also
It can provide an effective metal smelting method for the organization. After all, the Red Army has no shortage of oil and coal."
Electric melting furnaces, also called electric arc furnaces, use the high temperature generated by electrode arcs to smelt metals. The melting temperature is as high as more than 3,000 degrees Celsius. It can basically meet the smelting needs of all materials. It can smelt high-quality alloy steel and high-strength steel, as well as gold and silver.
, copper, aluminum, manganese, nickel and other metals, effectively remove various impurity elements and improve purity and material performance.
Its working principle is very simple. You only need to put an energized electrode into a crucible filled with metal materials to smelt.
The disadvantage is that it requires electricity and consumes a lot of energy.
This is one of the mainstream metallurgical processes of later generations. Its working principle is almost the same as that of electroslag remelting technology. It is essentially based on the physical principle of thermal effects of electric current. Its status and status are lower than that of electroslag remelting.
Of course, electric arc furnaces and electroslag remelting seem to be the same, but in fact there are big differences. In terms of material properties of the final smelted metal, the former is equivalent to an unguided rocket, and the latter is equivalent to a precision-guided strategic ballistic missile.
Generally speaking, the steel produced by electric arc furnaces needs to be purified by electroslag remelting to meet the needs of gun barrels and barrels.
The status of electroslag remelting cannot be shaken.
Well, what's interesting is that the requirements for 'gun barrel' and 'gun barrel' are the military weapons and equipment standards of China during its prosperous times. The current era's performance requirements for high-strength steel are not as harsh and abnormal as those of later generations. Just electric arc furnace production
High-strength steel can meet the strength requirements of gun barrels and barrels.
And this, for the base area where there is no shortage of oil, the electric arc furnace metallurgical process based on electric energy is simply great news.
You must know that historically, the manufacturing of weapons and equipment of the Eighth Route Army has always been hampered by the backward level of metallurgical technology. Due to the inability to independently manufacture high-strength steel and high-quality alloy steel, the steel for the production of grenades, gun barrels and bullets basically came from the Japanese war zone.
Rail resources.
The Eighth Route Army has no shortage of strategic materials such as gasoline and diesel!
"Electric arc furnace technology, consider it a meeting gift from me to the organization..." Yu Hua murmured softly.
Just do what you say, no ambiguity.
The generator, submerged arc welding machine and steel are all ready-made. The crucible only needs a graphite electrode and a graphite container. The prerequisites for the entire smelting process have been fully lit without any obstacles.
Yu Hua does not need the various tall electric arc steelmaking furnaces with a single furnace capacity of 100T in later generations. He only needs a small electric arc furnace with a single furnace capacity of 2 kg to meet the demand.
Picking up the glass bottle containing nickel-manganese material, Yu Hua left the bedroom and walked towards the brick building No. 1 where the submerged arc welding machine was placed.
…
Making a crucible is essentially a game of playing with mud.
The entire graphite crucible consists of graphite inner wall, refractory material and stone outer wall to form the main body of the crucible. The graphite comes from previously purchased materials, the refractory clay is loess and gravel in the corner, and the stone outer wall is the tamping jar contributed by Xiong Shenggang.
At three o'clock in the morning, a simple stove was built in the open space of Brick House No. 1. The temperature in the stove was as high as 1,200 degrees Celsius, scalding hot, and in the middle, there was a black stove and five black thin rods.
.
After firing at high temperature for one and a half hours, the time is up.
Yu Hua held the tongs and carefully took out the newly fired graphite container and graphite rod one by one. The surface of the graphite container was reddish and felt hard. When touched lightly, it sounded like metal.
Graphite containers made of natural graphite are crucibles with the highest thermal conductivity. In this era when cast iron crucibles and steel crucibles were still commonly used, the thermal conductivity of graphite crucibles was simply a dimensionality reduction blow.
After the graphite container cooled slightly, Yu Hua put it into a tamping jar.
"Sir, you want the yellow mud and gravel." Xiong Shenggang showed respect on his face and presented the dry loess and gravel.
There were only two people in the yard, Xiong Shenggang and Yu Hua. After the previous celebration, he returned to Brick House No. 1 to be on duty and guard the equipment. When Yu Hua arrived, he began to help.
Yu Hua nodded, then put the refractory clay into the gap between the tamping pot and the graphite container, and then poured in various irregular scraps: "Get ready to start work."
Everything is ready.
After hearing these words, Xiong Shenggang turned on the submerged arc welding machine that had been connected to power according to the pre-arrangement, adjusted it to the maximum output power, clamped the graphite rod used as an electrode with the welding tongs, and after doing all this, reported: "Sir, I
Ready."
"Xiong Shenggang, before taking the next step, I would like to ask you, are you absolutely loyal to the organization?" Yu Hua did not rush to the next step. He stared at Xiong Shenggang in front of him and asked seriously.
loyalty!
This is the most basic and important thing. Although the electric arc furnace technology, which Yu Hua defined as a gift, was born as early as the early 19th century, it is undeniable that this technology was still an advanced metallurgy in the era of 1937.
Process technology, especially graphite crucibles.
Graphite crucibles and electric arc furnaces are a perfect match. Although Yu Hua is not sure what type of crucibles are currently used in electric arc furnaces in the steel and metallurgical industries around the world, graphite crucibles are definitely not used.
Because this is a crucible technology that was only developed in modern times.
The importance of loyalty lies in whether this technology will be leaked. Xiong Shenggang, who has a junior high school education, is undoubtedly the best candidate to learn and apply this metallurgical technology.
After this period of getting along and observing, Xiong Shenggang has a calm personality, good conduct, strong observation and execution skills, and most importantly, his strong body does not affect his brain.
This man is very smart.
"Yes!" Xiong Shenggang was startled when he heard this question, his face flushed a little, his back straightened, and he responded loudly without thinking.
To a soldier, especially to a soldier, Yu Hua's question is tantamount to...
humiliation.
But Yu Hua's extremely solemn expression made Xiong Shenggang dare not get angry. He had never seen Yu Hua show such an expression.
"Okay, I hope you won't disappoint me, Xiong Shenggang, this is the technical information on the new electric arc furnace smelting process invented by me. It can smelt high-strength steel used to make pistol barrels, rifle barrels, mortars and recoilless rifles.
steel, and other high-quality alloy steels. This technical information includes the technical principles of electric arc furnaces, graphite rod formulas, graphite crucible formulas and firing requirements. This is the most important core secret of electric arc furnace smelting technology. As long as the single furnace capacity reaches 6
Kilograms can meet the demand for 60mm caliber mortar tubes."
Yu Hua looked at Xiong Shenggang, and took out the electric arc furnace technical information he had written overnight with his right hand. With piercing eyes and an inexplicable aura, he carefully elaborated and explained the importance and key points of the electric arc furnace metallurgical process, as well as its future applications, with extremely serious words.
: "And your mission is to learn and completely master this metallurgical technology, do you understand?"
The formula of graphite rods and graphite crucible is the soul of electric arc furnace metallurgy. The graphite crucible formula given by Yu Hua has a performance level of about 2010, which is completely sufficient.
"What?" Xiong Shenggang's mind seemed to have been hit by a heavy hammer, and his heart was shocked. He couldn't believe what he heard.
It can smelt high-strength steel used to make pistol barrels, rifle barrels, mortar barrels and recoilless rifles, as well as other high-quality alloy steels!
Although Xiong Shenggang only had a junior high school education, he could not resist his eagerness to learn and was willing to take the initiative to understand and learn unfamiliar knowledge. It happened that he knew some basic knowledge about metallurgy.
The metallurgical level determines the quality and performance of steel. Due to the lack of sufficient metallurgical technology, the current metallurgical level in the base area is still in the state of "iron-making" and cannot make steel.
Iron is easy to smelt, but steel is difficult to make.
High-strength steel used in gun barrels and barrels is almost a dream.
Who doesn’t know the benefits of independently manufacturing weapons and equipment, but how can we build rifles and cannons without good steel?
However, what did he hear now?
Mr. Yu Hua in front of me has invented a new electric arc furnace process that can smelt high-strength steel and various high-quality alloy steels.
He, Xiong Shenggang, who has a junior high school education, understands the concept and importance of "high-strength steel" and "high-quality alloy steel"!
"Xiong Shenggang, your mission is to learn and completely master this metallurgical technology, do you understand?" Yu Hua did not explain in detail, but asked seriously again.
Xiong Shenggang heard the meaning of Yu Hua's words. He was excited and quickly stood in a military posture: "Understood!"
Yu Hua nodded, took a step forward, handed the notebook containing the technical information on the metallurgical process of the electric arc furnace into Xiong Shenggang's hands, and said: "About this technology, after I leave, you can tell Mr. Wu again, just say
It was a surprise from me, a meeting gift for the organization."
For this meeting gift, Yu Hua planned to make it a bit of a surprise.
"Yes." Xiong Shenggang was shocked and moved. Is this the world of genius?
A metallurgical technology of extremely high value is just a ‘meeting gift’?
You must know that this is an important technology that the organizational team has been lacking for a long time, and it is completely strategic.
Xiong Shenggang quickly took the notebook and protected it as if it were a peerless treasure. He suddenly realized something and looked at Yu Hua: "Sir, are you leaving?"
"Leave at dawn, give me the welding pliers." Yu Hua nodded and replied.
Xiong Shenggang, who showed reluctance in his eyes, took the welding pliers from his hands. Yu Hua put on protective sunglasses, then pressed the switch, holding the welding pliers with both hands, and controlled the graphite rod connected to the current to enter the graphite crucible.
"Zi..." A dazzling and hot arc emerged. The scrap steel in the graphite container turned red and melted at a speed visible to the naked eye. The temperature increased exponentially, easily exceeding one thousand degrees Celsius and reaching the melting point.
All the steel melts quickly, gradually forming a liquid red molten steel, releasing billowing heat.
Looking at this scene, Xiong Shenggang, who was standing next to him, was extremely shocked. He couldn't help but swallow his throat. The raw materials heated up and melted so quickly. It was completely unimaginable for him who often made iron. He had an understanding of the electric arc furnace metallurgical process.
A true and profound understanding.
After the molten steel in the graphite crucible fully reacted and its purity and strength increased, Yu Hua did not continue to heat the molten steel to prevent the temperature of the molten steel from being too high.
Adjust the power of the submerged arc welding machine to medium to maintain the current temperature. The welding tongs are controlled by Xiong Shenggang, and then he takes out a glass bottle, takes out 50 grams of manganese metal, and puts it into the molten steel.
The role of manganese is to increase the strength and hardness of steel. After fifty grams of manganese metal enter the high-temperature molten steel, it melts quickly. Yu Hua waits for the steel and manganese to fully react before adding nickel.
Nickel can improve the flexibility and corrosion resistance of steel. Under the action of nickel and manganese, the anti-plunging performance and strength of the entire steel plate will be qualitatively improved compared to the most advanced tank armor steel in various countries.
The anti-plunging performance and strength are improved by a full 10%!
If the Germans adopt the most advanced cold forging process, the anti-plunging performance of the new armor steel will be improved.
The smelting process still continues.
Yu Hua, who has simulated thousands of times of physical systems in his mind through thinking, is extremely skilled in his craftsmanship, no worse than those front-line workers. Coupled with the ultra-high computing speed of the thinking computer, the accuracy reaches the millisecond level, and the success rate
Up to 99%.
Five minutes later, a furnace of perfect molten steel comes out of the furnace and is poured into the mold for casting.
A sample of armor steel that should have been produced in the 1970s was born in 1937.
"Let's call you Y-shaped steel, using the pinyin of my name. I hope you can shine abroad." Yu Hua looked at the fiery red steel plate in the mold that met his expectations, a smile appeared at the corner of his mouth, and there was hope in his eyes.
Xiong Shenggang next to him was paying close attention to the electric arc furnace and graphite rods. He did not notice the difference in the pot of molten steel in the furnace. Of course, he could not see any difference. Most of his attention was on the electric arc furnace and graphite rods.
Y-shaped steel whose internal structure is in a recrystallized state looks and looks no different from other steel plates.
…
Early the next morning, at dawn.
At the entrance of Liu Village, an elegant man, Liu Wei, Lin Wan and other members of the design team stood, and in front of him was Yu Hua who had packed his luggage.
There is no practice banquet, no grand farewell scene and procession, it is quiet when you come and calm when you leave.
"Comrade Yu Hua, see you next time. Learning is a big thing. I wish you go further and become an internationally renowned scientist." The elegant man had a gentle and cordial smile on his face and sent his blessings to Yu Hua.
"Mr. Wu, Huading will live up to your expectations." Yu Hua nodded and said goodbye.
"That's good, go ahead and be safe on the road." The elegant man smiled.
"Jin Yu, Xiaoyu, Lao Zhou, I'm leaving." Yu Hua turned to the three people standing on the right, passing by the faces of Lin Wan, Fang Yu and Zhou Yuan, and spoke slightly solemnly.
"It's not a separation between life and death, please be safe, see you in Tsinghua University." Lin Wan showed a natural and generous smile, like a lotus flower, waving goodbye.
"Yu Hua, see you at Sipailou Campus." Fang Yu's mouth curved slightly, and her smile was neither shallow nor faint, like an orchid.
Sipailou Campus, the site of National Central University, is located in the center of Nanjing.
"Lao Yu, if I have a chance, I'll see you in Tsinghua University. If not, I'll treat you to dinner at Jiaotong University next time." Regarding where to eat, Zhou Yuan, who did not rank among the top 50 in the city in the joint entrance examination, seemed extremely free and easy. Tsinghua Garden also
Okay, so is Jiaotong University.
"Okay, goodbye everyone."
Yu Hua smiled and nodded, looking around at everyone, bowing and saluting.
After the ceremony, he turned around and got into the Buick.
"Buzz!" The Buick car moved forward slowly, and slowly left Liu Village along the road under the watch of everyone.
Yu Hua left, leaving behind a meeting gift. As a comrade, with everyone's expectations, he embarked on the road to Tsinghua University.
Basic science determines the upper limit of applied science, and academic level determines the upper limit of scientific research ability. Yu Hua needs to improve his academic level again.
The core goals of the next stage are oxygen top-blown converter technology and electroslag remelting technology.
"The future and hope of our country are all tied to talented students like Yu Hua. You must do a good job in Yu Hua's safety." The elegant man stood there, looking at the Buick car that was gradually going away, and sighed softly.
Liu Wei heard this and nodded.
At this time, Yang Xiu suddenly ran over and greeted the elegant man. Not far away, Xiong Shenggang's figure appeared on the main road of Liu Village.
…
In the evening, the sky is filled with red clouds.
At the northern foot of Qilian Mountain, south of Yumen, Laojun Temple.
The Laojun Temple is located in a valley, backed by a cliff and facing the Petroleum River. Due to years of wind and sand erosion, the walls of the Laojun Temple have collapsed. The temple is covered with weeds and gravel, and there is no scent of incense.
The entire area is deserted, with only a few hunters living ten miles away.
Today, Laojun Temple, which has been deserted for a long time, welcomed a group of guests.
More than 30 people walked along the rugged path, and a dozen horses moved forward steadily with exploration tools and supplies. At the front of the team was the guide Tao Hu, who passed through the forest in front of Laojun Temple. The whole team moved steadily
Stopped in front of the temple gate, this is an oil exploration team composed of soldiers and technicians, belonging to the northern Shaanxi base area.
"Comrade, we're here, this is the Laojun Temple you are looking for." Tao Hu, whose face was covered with weather and sunburns, stood at the front of the team, looked at the Laojun Temple, took a few breaths, and looked towards Liang Daya behind him.
said.
"Thank you, fellow countryman, after more than two thousand miles, we finally arrived..." Liang Daya, the military chief of the oil exploration team, thanked Tao Hu gratefully. Tao Hu was a local hunter and a serious local. If it weren't for him,
Serving as a guide and leading the team to find the Laojun Temple located in the deep mountains and old forests will take more time and energy.
The Laojun Temple, built during the Tongzhi period, was gradually forgotten over time due to its remote location and sparsely populated area.
Tao Hu quickly shook his head: "Thank you for nothing, it's just a small favor."
Liang Daya smiled and looked at the dilapidated Laojun Temple. He finally breathed a sigh of relief and with some expectation in his heart, he issued orders in order: "Xiao Li, Xiao Zhu, you guys are responsible for the vigilance."
Starting from Yancheng, they left the base area and passed through the three provinces of Shaanxi, Gansu and Ningxia. They traveled through mountains and rivers to Yumen in the Hexi Corridor. The entire oil exploration team finally arrived at Laojun Temple. The journey was about 2,500 miles and took 20 days.
.
It has to be said that this was a long and arduous journey. During the journey, we encountered many dangers, including bandits, wolves, and local soldiers. Even Liang Daya, the commander of the first cavalry reconnaissance company of the Red Army, was very tired.
It's quite annoying.
Fortunately, the team arrived at their destination without any danger.
"yes!"
The two young warriors in the team immediately shouted.
"Huzi, take your communications team up the mountain, set up a radio station, and send a report to the headquarters. We have arrived at Laojun Temple and will start exploration work immediately." Liang Daya looked at Li Hu, the leader of the communications team in the team, and spoke seriously.
road.
"Yes!" Li Hu, the communications squad leader, stood at attention, raised his right hand in military salute, and then led the three members of the communications squad up the mountain.
After issuing a series of orders, Liang Daya looked at the oil exploration personnel in the team: "Comrade Yan Shuang, I will trouble you next."
"I have read Mr. Xie Jiarong's "Gansu Yumen Petroleum Report". Ziqian also said before that the geological conditions in the Yumen area are very good, and there should be a large oil and gas reservoir with rich reserves underground, which has very high industrial exploitation value. Along the way, it turned out to be true.”
Yan Shuang looked around the geographical situation around Laojun Temple and sighed: "From a geographical point of view, Laojun Temple is located at the northern foot of the Qilian Mountains. Geologically, it belongs to the piedmont fold belt of the Qilian Mountains. The geological structure is complex and it is an asymmetrical dome back. Inclined, mostly sandstone..."
Yan Shuang, a geological expert and petroleum engineering expert, graduated from the Department of Mining and Metallurgy of Peking University with a bachelor's degree, a master's degree in petroleum engineering from Norman University in the United States, and is the director and person in charge of Yanchang Oil Mine Exploration. He is one of the very few highly educated top talents in the base area.
This Laojunmiao oil exploration mission was led by Yan Shuang.
Looking at Mr. Yan Shuang who was talking about his professional knowledge, Liang Daya could only nod his head, but he felt a little helpless in his heart.
After studying hard for so long, his understanding of geology and geological exploration is still at the initial stage, with little progress.
There is no way. It's not that he doesn't want to learn, but these things...
Too profound.
It's just embarrassing his big teeth!
Following Mr. Yan Shuang along the way, Liang Daya understood one thing: people are really different.
Professional matters can only be handled by professionals.
In this mission, Liang Daya firstly found Laojun Temple and drew a route map, and secondly protected Yan Shuang and other oil exploration personnel. Other professional tasks such as oil exploration were handled by Yan Shuang.
The team entered Laojun Temple and stationed on the spot. It was getting late and the exploration work would be postponed to tomorrow. The soldiers and accompanying technicians unloaded equipment and supplies and buried pots to make rice.
"Report, call from headquarters." After the team was settled, a correspondent ran down from the top of the mountain, entered the temple, and reported to Liang Daya.
Liang Daya took the confidential message and looked at it.
Liang, Petroleum Exploration Team:
The situation is known, and your team is acting according to the plan, ensuring the safety of technical personnel. The second batch of drilling and exploration equipment and food supplies has arrived in Xi'an and is expected to arrive at Laojun Temple on June 20.
Chen May 24
"Call back to the headquarters. Our team has received it. We will start drilling and exploration work tomorrow. Don't worry, we will definitely find oil." After reading the confidential message, Liang Daya felt confident and immediately gave a reply.
"Yes!" The correspondent turned and left, preparing to call back.
Liang Daya turned around and walked out of Laojun Temple, stood at the door, and looked at the open space fifteen meters away due north, with a fiery light shining in his eyes.