Zhou Yan glanced at the crankshaft that had been broken into two parts, and rolled his eyes helplessly: "What else can I do, just leave it alone for now!"
The old woman on the side quietly came forward and snorted coldly at the embarrassed Zhou father: "Comrade Zhou, our own land has not been plowed yet!"
"Son..." Zhou Zhenghai asked tentatively, "Is there any way you can fool me first, and then change it after the spring plowing is over?"
You can have this!
Grind out the bevel on the broken area and weld it with an argon arc welder. After completion, just do the heat treatment.
"Dad..." Zhou Yan looked at the old man and then at his brother-in-law, "You guys go in first, I'll make a call..."
An hour later, Qingyan Group Dongyang Branch delivered several bottles of argon gas, an argon arc welding machine, a set of heat treatment tools, welding wire and other auxiliary materials.
Zhou Zhenghai had seen car repairmen before, but this was his first time seeing so many strange tools, especially the argon arc welding machine.
"Can these things work?"
"Just please!"
Zhou Yan dares to vouch for it, and he is naturally confident: in the dungeon, Zhou Yan once advanced many types of work to level eight, including welding.
Of course, before welding, the fracture needs to be grooved for welding.
After using more than a dozen alloy grinding discs at home, and seeing that Father Zhou was about to get angry, he finally polished the fracture into shape.
Next, it's welding.
First, use spot welding to fix the workpiece that was broken into two parts, and then continue to build up the welding.
Watching Zhou Yan keep piling up welding wire into the welding hole, Mr. Zhou was very curious, but he was too embarrassed to speak.
Zhou Yan spent two or three hours and finally welded the two-piece crankshaft before lunch.
It's lunch time, but I seem to have forgotten to prepare lunch after looking at the excitement for a long time.
"living comfortably without anybody's help!"
As soon as the words came out of his mouth, Zhou Yan was slapped by my mother on the back of his head: "I don't need you to eat or drink!"
There were guests, and although it was a bit late, my mother still directed Zhou Yan "remotely" and cooked six dishes and one soup. During lunch, with the help of wine, Father Zhou finally asked one question and held it back in his mind.
Question for hours: “Son, what the hell is going on with TIG welding?”
"Um..." Zhou Yan looked confused. Electric welding was easy to explain, but it involved inert gases. His father, who skipped two grades in junior high school and never studied chemistry, was a little confused.
"Well..." Seeing the old man's unkind expression, Zhou Yan had no choice but to explain, "You should know the principle of electric welding. It's similar to energy-saving lamps. The arc generated by high voltage instantly breaks down the air and melts the metal..."
"Ordinary welding rods have a coating on the outside to protect the wire from being oxidized by the air." Zhou Yan carefully stared at his father. "The principle of argon arc welding is similar, except that the coating is replaced by argon gas."
"As for argon gas, you can think of it as a gas that no one is familiar with..."
After lunch, there is heat treatment of alloy steel.
The lattice density of alloy steel is much larger than that of ordinary steel. After welding is completed, the alloy steel coming out of the welding joint will generate stress due to cooling. If the stress is not reduced and released, the fate of the crankshaft will be the same...
The heat treatment process is relatively simple: use electric heating wire to heat the workpiece to a certain temperature, and then apply heat insulation to slowly release the stress.
The heat treatment equipment prepared by Zhou Yan has a relatively high degree of automation. After arranging the heater, insulation cotton and temperature sensor, you can directly set the heating temperature and heat preservation time in the machine.
The heat treatment operation is relatively easy, but it is more troublesome to explain the principles to Dad while operating...
After setting the heat treatment process curve, Zhou Yan wiped the sweat from his forehead and looked back at the old man who was still very curious: "Dad, put the things away first and don't let anyone move them. I'll go with Ruoshu in the afternoon."
Mountain."
"Going up the mountain?" The old man was stunned for a while, then he recovered, "What are you doing going up the mountain?"
"Two years ago, didn't I say that I wanted to build a tree house on the mountain? A while ago, I heard from my subordinates that the trees were almost grown. Ruoshu and I went to take a look." Zhou Yan smiled, "Also, if
Shu is planning to do his graduation project, right? He just wants to practice his skills with this tree house project..."
"Then why are you still fussing? Why don't you hurry up..."
The uncle and aunt who were watching the fun on the side couldn't help but smile.
"Oh, by the way..." My uncle suddenly grabbed Zhou Yan, who was about to leave, "Your aunt and I haven't gone to the mountains to play for a while, how about we come together?"
The original plan was to go up the mountain to survey, so the tools and instruments were naturally available.
Originally there were no roads on Fuyun Mountain, but after Xinghan Group contracted the top of the mountain, a mountain road was specially opened for planting trees. Although it is not made of gravel, asphalt or cement, it can at least allow cars to go up to the top of the mountain.
"Yeah, we haven't seen each other for only two or three years, and the changes in the mountains have been huge..."
What surprised Qin Ruoshu the most was that the "bald head" that was previously like the Mediterranean Sea had been covered by trees in just two years.
"Beauty, can you still remember which area we circled at that time?"
"Of course," Qin Ruoshu jumped out of the car proudly and pointed to a lush forest on the sunny hillside, "I remember it was over there..."
After saying that, the eldest lady ran over happily.
"Ah..." Qin Ruoshu observed the woods carefully, then quickly returned, like a curious baby, waiting for a pair of big watery eyes to look at Zhou Yan, "Brother, how did you do it?
"
"Cold salad..."
"Brother~brother~"
He originally wanted to give it a try, but when his girlfriend started acting coy, Zhou Yan couldn't handle it anymore: "Ahem, the idea will affect..."
"Eldest nephew, it's okay. Aren't you all engaged?"
Looking back, the eldest lady's big, watery eyes were still staring at him lovingly.
"Okay, I said..."
It's actually not complicated to make trees grow the way you want.
There are many oak trees that have not yet grown up on Fuyun Mountain. Select some branches that meet the requirements and transplant them to the location specified for the tree house project.
Originally, the growth rate of oak trees was not slow, and with the accumulation of rooting powder and fertilizer, it would take two years to grow enough to carry a tree house.
Of course, during this period, you still need to keep pruning the trees to make the shape grow in the direction you want...
"Oh..." After listening to Zhou Yan's explanation, Qin Ruoshu nodded with satisfaction, "So it's like this, but..."
Qin Ruoshu glanced at the oak trees not far away, most of which were less than half a foot in diameter at breast height: "Can such a thin trunk support the weight of the tree house?"
"Boss, you have to put all the weight on the tree trunk," Zhou Yan rolled his eyes, "Can't you transfer part of the weight to the mountain using a steel structure? The whole building is made of rock foundation. If you don't make good use of it,
Isn’t it a pity?”
"Also, classmate Qin Ruoshu, you are engaged in architectural design," Zhou Yan grinned, "Whether it can bear the weight is a matter for the structural engineer..."
"That's true..." Qin Ruoshu smiled and scratched his head, "I have stayed at the Xinghan Group Design Institute for a long time, and I am used to it..."