Leng Yuming and Xiao Dongping lamented that Qin Hai was a monster, and this monster was also doing even more monster things in the casting workshop at this time.
"No. 40 chromium steel, 500 grams."
"12 chromium nickel steel, 300 grams."
"No. 65 manganese steel, 1200 grams..."
Qin Hai took a piece of paper and reported the numbers one by one. Ning Mo, Yu Haitao, Miao Lei, and Wang Xiaochen were busy looking for the specified model among a large pile of garbage-like iron shavings and steel scraps.
, then weigh it with a balance, and then pour it into a hopper to prepare for smelting.
It was already after get off work, and all the workers on the day shift in the workshop had left. Due to the lack of production tasks in the factory, there were only three or four workers on the night shift in the foundry workshop, and they were all doing their own work. No one cared about these workers. What is this young man busy with?
Wang Xiaochen was temporarily brought in by Qin Hai to help because weighing these metals required the use of a laboratory balance. As a flaw detector, Wang Xiaochen was also an operator of the laboratory and had the authority to use the balance. In addition, Qin Hai also discovered that he
It's okay for those little friends to do some rough work, but for work like fine weighing, it's more appropriate for girls to do it.
Wang Xiaochen didn't know what Qin Hai and the others wanted to do, but she was a single female worker and had nothing to do anyway. Qin Hai asked her to help, so she happily stayed. Seeing Qin Hai carefully preparing these scraps
Metal, she feels, is quite mysterious.
"Okay, it's finally balanced." Qin Hai put down the note in his hand, wiped the sweat from his head, and said with relief.
The alloy steel that Qin Hai wants to refine is an ultra-high-strength alloy steel that was developed at the beginning of the 21st century. In this era, the theory about this alloy steel has not even been put forward. By precise
By controlling the proportion of various elements such as chromium, manganese, vanadium, molybdenum, and silicon in alloy steel, coupled with a special heat treatment process, the strength of this alloy steel can be more than three times higher than that of ordinary high-strength steel.
In later generations, it was used to manufacture important stress-bearing components such as aircraft landing gear.
Relying only on some scrap steel as raw materials, and the smelting equipment is relatively crude. Qin Hai knows that the alloy steel he smelts will definitely not reach its theoretical best performance, but when used to make a military dagger, it can definitely be regarded as overkill.
. He can guarantee that Mangu's soldier nephew will never be able to find better materials than this kind of steel.
It took a lot of Qin Hai's brain cells to prepare the formula of ultra-high-strength alloy steel based on various alloy steel scraps collected from various places. Various alloy steels contain different metal elements, and the amounts of scraps are also different.
, which is equivalent to solving a linear programming problem with several constraints. Fortunately, Qin Hai's mathematical skills are quite good, and he was able to solve such a complex problem.
"Can we melt molten steel now?" Miao Lei asked eagerly.
"Okay." Qin Hai replied.
The foundry workshop has a small power frequency induction furnace with a capacity of 150 kg, which is usually used to cast some small workpiece blanks. Now it is used by Qin Hai to smelt this ultra-high-strength alloy steel. At this point, Qin Hai is very grateful to Wei
Baolin's. If Wei Baolin hadn't completely changed the factory's management system, Qin Hai wouldn't be able to use the workshop equipment so freely to do his own private work.
The electric furnace started up, the furnace temperature increased little by little, and the scrap steel in the furnace began to make a roaring sound. This electric furnace has an electromagnetic stirring function. After the scrap steel is turned into molten steel, it will be fully mixed in the furnace, making various
The distribution of elements in the molten steel becomes uniform.
Qin Hai stared closely at the thermometer on the electric furnace, constantly adjusting the power of the electric furnace to ensure that the temperature in the furnace was controlled at the specified level, neither too high nor too low.
The smelting process lasted for nearly half an hour. Qin Hai issued a warning to everyone: "Okay, everyone, stay back and prepare to tap the steel."
Everyone retreated, leaving only a few pre-made sand molds at the scene. These sand molds were made by Ning Mo with the drawings designed by Qin Hai when he was at work during the day. This small job was in casting.
The workshop is not worth mentioning at all.
Qin Hai in his previous life had never personally done casting work, but his predecessor in this life was a student majoring in casting at a technical school, so he was no stranger to casting operations. He pressed the electric button, controlled the electric furnace to turn over, and turned the orange
The red molten steel is poured into the sand mold. The molten steel exudes scorching heat and flows in the cavity of the sand mold. Then it gradually cools and condenses, turning into a cyan-blue metal.
"What are you doing?" A worker on the night shift saw the excitement and came over to ask.
"Make something small." Ning Mo replied vaguely.
"Haha, you are doing private work. If you are caught by Director Miao, you will be better off." The worker threatened with a smile.
"Master Chen, don't worry. I told my father and he agreed." Miao Lei replied half-truthfully. He actually said hello to Miao Funan in advance, but the reason he said
He was accompanying Qin Hai to do some material experiments. Miao Funan knew that his son would secretly do some private work on weekdays. Since all the workers in the factory were doing this, he himself was too lazy to restrain his son, so for such things,
I have always turned a blind eye.
After the workpiece is cooled, it needs to be machined first, that is, drilling, cutting and other processing on metal cutting machine tools such as lathes and milling machines. Qin Hai is a thoughtful person and he has considered the machining equipment in advance.
requirements, so the steel he chose does not have high strength before heat treatment and can be cut with ordinary machine tools. The ultra-high strength of the material must be achieved through a series of heat treatments after the machining is completed.
The only way to do machining is to go to the metalworking workshop and find workers on the night shift. Ningmo took over the task, holding a pile of workpieces and looking for help one by one.
I don’t know if it’s because of Ning Zhongying, but Ning Mo is very popular in the factory. He will give face to almost anyone he finds to help him. Of course, Ning Mo is not a person with no eyes. He has asked others to help, and in others
Throwing an eighty-cent pack of cigarettes in the toolbox as a token of appreciation is the least you can do.
Since there were many places where people were needed to help, Ningmo sent out a whole carton of cigarettes in one night and put in all the money he earned from selling farm tools the day before yesterday. However, Ningmo didn't feel sorry for it at all. Qin Hai asked him
The concept instilled in me is: if you don't want to let go of your children, you won't be able to trap the wolf. If you want to make big money, you must not save the small money that should be spent. Ning Mo was originally a generous person, but after listening to Qin Hai's words, he was even more willing to work hard.
Several people were busy from the afternoon after get off work until late at night. The military dagger Zhang Laosan wanted and several other pieces of ordnance designed by Qin Hai were ready. Based on the theory he mastered, Qin Hai heat-treated several products and added After testing its various mechanical properties, a satisfied smile appeared on his face.
"How is it, Qin Hai, is it successful?" Several friends asked him anxiously.
Qin Hai nodded and said: "Successful. Although it has not reached the ideal state, the edge of the knife is definitely much harder than those of your shovels."
"Can you try it?" Yu Haitao asked.
"What if it fails on trial!" Ning Mo patted Yu Haitao's head. It would be too tragic if something failed on trial after spending so much effort.
Qin Hai smiled and said: "We have already tested the mechanical properties, so there is no need to use it to break bricks, right?"
"There's no need to try it. Can the things made by Qin Hai be fake?" Ning Mo said. He held these items and looked at the steel mouth and color of the knife. He felt so happy that he couldn't get enough of them.
"Fat man, stop looking. Put all these things away and contact Zhang Laosan later to see when the arrogant nephew he mentioned will come to the county." Qin Hai told Ning Mo.
Ning Mo nodded and said: "No problem, I will contact him tomorrow. However, it doesn't matter whether he comes or not. We might as well keep such a beautiful thing for ourselves to play with."
Qin Haidao: "Don't think like that. We don't go to all this trouble just to make a toy for ourselves. These things are the foundation of our fortune, and we can't sell them too cheap. By the way, when the time comes
If the other party comes, don't talk nonsense and just watch me talk to him."
"Qin Hai, don't worry, we will all listen to you." Several friends agreed loudly. They had become more and more superstitious about Qin Hai's charm.
Early the next morning, Ning Mo rode his bicycle to Zhang Laosan's blacksmith shop and told him that the dagger was ready and asked him to notify Mangu's nephew to inspect the goods. Zhang Laosan readily agreed.
He made an appointment with Ningmo to meet at the blacksmith shop during dinner.
At this time, Xiao Dongping, who had not slept well all night because of excitement, also carried a canvas bag containing 40 rotary blades and boarded a long-distance bus bound for the provincial capital Hongze City.