Chapter 21: Ultra-high-strength alloy steel

Qi Leng Yuming and Xiao Dongping were feeling that Qin Hai was a monster, and the monster was doing more evil things in the foundry at this time.
"No. 40 chrome steel, 500 grams."
"12 chrome-nickel steel, 300 grams."
"No. 65 manganese steel, 1200 g ..."
Qin Hai held a piece of paper and reported the numbers one by one. Several people, Ning Mo, Yu Haitao, Miao Lei, and Wang Xiaochen, were busy looking for a designated model in a pile of iron-like wood shavings and steel filings. , Then weighed with a balance, then poured into a hopper, ready for smelting.
This is already after work, and the workers in the workshop are gone. Due to insufficient production tasks in the factory, there are only three or four workers in the casting workshop at night, and they are all doing their own work. No one cares about these. What a little young man is doing.
Wang Xiaochen was temporarily helped by Qin Haila because weighing these metals requires a laboratory balance. As a flaw detector worker, Wang Xiaochen also belongs to the laboratory operator and has the power to use the balance. In addition, Qin Hai also found that some of his little friends had no problem doing rough work, but to say that the work of fine weighing had to be more suitable for girls.
Wang Xiaochen didn't know what Qin Hai was trying to do, but she was a single female worker. There was nothing to do anyway. Qin Hai asked her to help, and she stayed cheerfully. Seeing Qin Hai's preparation of these scrap metals discreetly, she felt quite mysterious.
"Well, it's finally balanced." Qin Hai put down the note in his hand, wiped the sweat on his head, and said with relief.
The alloy steel that Qin Hai wanted to refine was an ultra-high-strength alloy steel developed only in the early 21st century. In this era, no theory about this alloy steel has even been proposed. By precisely controlling the proportions of various elements such as chromium, manganese, vanadium, molybdenum, and silicon in alloy steels, plus special heat treatment processes, the strength of this alloy steel can be more than three times higher than that of ordinary high-strength steels. In later generations, it was used to manufacture important force-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 is clear that the alloy steel smelted by himself must not reach its theoretical best performance, but it can definitely be regarded as overkill for making a military dagger. Already. He assured that the brutal nephew of the soldier would never find a better material than this steel.
To formulate a super-high-strength alloy steel with various alloy steel scraps collected from various places, it has cost Qinhai many brain cells. Different alloy steels contain different metal elements and different amounts of scrap. This is equivalent to solving a linear programming problem with several constraints. Fortunately, Qin Hai's mathematical skills are quite good, and such a complicated problem actually solved him.
"Can molten steel be made now?" Miao Lei asked eagerly.
"Yes," Qin Hai replied.
There is a small industrial frequency induction electric furnace with a capacity of 150 kilograms in the foundry. It is usually used to cast some small workpiece blanks, and it is now used by Qinhai to smelt this ultra-high strength alloy steel. In this regard, Qin Hai is very grateful to Wei Baolin. If Wei Baolin had not completely changed the management system of the factory, Qin Hai would not have been so free to use the equipment in the workshop to do his private work.
The electric furnace started up, the temperature of the furnace rose a little, and the scrap steel in the furnace began to make a rumbling sound. This electric furnace has the function of electromagnetic stirring. After the waste steel is molten into molten steel, it will be fully mixed in the furnace, so that the distribution of various elements in the molten steel becomes uniform.
Qi Qinhai's eyes stared 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 a specified level, neither too high nor too low.
The smelting process lasted for nearly half an hour, and Qin Hai issued a warning to the crowd: "Okay, everyone is a little bit behind, it is time to prepare for steel making."
Everyone stepped back, leaving only a few pre-made sand molds at the scene. This sand mold was made by Ning Mo holding a drawing designed by Qin Hai when he went to work during the day. This little job is not worth mentioning in the foundry.
Qin Hai of the previous life did not do casting work himself, but the predecessor of this life was a student of the technical school studying casting, so he was no stranger to the operation of casting. He pressed the electric button, controlled the electric furnace to turn over, and poured orange-red molten steel into the sand mold. The molten steel glowed hot, flowing in the cavity of the sand mold, and then gradually cooled and condensed into a blue-blue metal.
"What are you doing?" Some workers who came to work late came to the meeting and asked.
"Do something small," Ning Mu answered unclearly.
"Haha, you do private work, in case you are caught by Director Miao, you look good." The worker threatened with a smile.
"Master Chen, don't worry, I told my dad, he agreed." Miao Lei answered half-truth. He actually greeted Miao Funan beforehand, but the reason he said was to accompany Qin Hai to do some material experiments. Miao Funan knew that his son would secretly do some private work. Since all the workers in the factory were doing this, he was too lazy to restrain his son. Therefore, for such things, he always opened his eyes and closed his eyes. of.
After the workpiece is cooled, it needs to be machined first, that is, various processing such as drilling and cutting on metal cutting machine tools such as lathes and milling machines. Qin Hai is a meticulous person. He considered the requirements of machining equipment in advance, so the strength of this steel he chose before heat treatment is not high, and can be cut by ordinary machine tools. The ultra-high strength of the material is achieved after a series of heat treatments after machining.
Machining this matter can only be done by finding a night shift worker in the metalworking workshop. Ning silently took over the matter and looked for help one by one with a pile of workpieces.
I don't know if it's because of Ning Zhongying, Ning Mo's popularity in the factory is very good, almost anyone who finds help on the other side will give face. Of course, Ning Mo is not an indifferent person. Asking others for help, throwing a pack of eighty cents of cigarettes in a toolbox as a token of gratitude is the minimum thing.
Because there are many places to find someone to help, Ning Mo sent out a whole cigarette one night, and took in all the money made by selling farm tools the day before yesterday. However, Ning Mo didn't feel bad about this at all. Qin Hai instilled in him the concept that he couldn't bear the child's entanglement with the wolf. If he wanted to make a lot of money, he should definitely not save the little money. Ning Mo was originally a magnificent person. After listening to Qin Hai's words, he even spared his work.
A few people have been busy from late afternoon to late at night, the military dagger that Zhang Laosan wants and several other weapons designed by Qin Hai have been prepared. Based on the theory he mastered, Qin Hai heat-treated several products and tested its mechanical properties. A satisfied smile appeared on his face.
怎么 样 "How is it, Qin Hai, did you succeed?" A few friends asked him anxiously.
Qi Qinhai nodded and said, "Successful. Although it has not reached the optimal state, this knife edge is definitely much harder than your spades."
"Can you try it?" Yu Haitao asked.
"What to do if the test fails!" Ning silently patted Yu Haitao's head. It took so much effort to make something ~ EbookFREE.me ~ If the test fails, it will be too tragedy.
Qin Hai laughed: "We have measured the mechanical properties, so there is no need to use it to split bricks, right?"
"No need to try, Qin Hai can still be fake?" Ning Mo said. He held these things and looked at the steel mouth and color of the knife. He was so happy that he couldn't see enough.
"Fat, don't look at it, you put away all these things, contact Zhang Laosan, and see when the savage nephew he said can come to the county seat." Qin Hai explained to Ning Mu.
Yun Ning nodded silently and said, "No problem, I'll contact him tomorrow. However, it doesn't matter if he comes or not. It's okay for us to keep such a beautiful game."
Qin Haidao: "Don't think of it this way, we're trying so hard, not to make a toy for ourselves. These things are the foundation of our fortune, but we can't sell them too cheap. Right, by the time If the other party comes, don't bother talking, just watch me talk to him. "
"Qin Hai, rest assured, we all listen to you." Several small partners agreed loudly, they have become more and more superstitious about Qin Hai's charm.
一 In the early morning of the next day, Ning Mo rode a bicycle to Zhang's blacksmith's shop and told him that the dagger was ready. He asked the nephew of the barbarian to come to inspect the goods. Zhang Sansan readily agreed, and when meeting Ning Mo for dinner, the people on both sides met in the smithy.
At this time, Xiao Dongping, who had not slept overnight because of excitement, also carried a canvas bag with 40 rotary blades on his back and boarded a long-distance bus bound for Hongze, the provincial capital.