The shape of the tank body is special. After the entire steel plate is cut first, the remaining scraps are useless. They are piled up in the tank factory and finally used to be re-melted. Before being re-melted, these scraps are
Can be used by tank factory workers to practice welding skills.
Now, a forklift quickly delivered them several scraps. Looking at these scraps, Yu Changhong bent down and used prying force to pick out two scraps. The two edges were aligned and were about ten centimeters long.
Looking at these scraps, Yu Changhong felt even happier in his heart. The two pieces he took were the shortest. The longer the weld, the more difficult it was because many welding rods had to be used continuously. As long as there was a slight delay, it would be
This may cause the strength of the part where the two welding rods are connected to decrease.
He picked out the best ones for welding first and left the rest to Qin Zhenhua.
This is not a trick on your part. As an apprentice, of course you have to let the master make the first choice.
Yu Changhong's behavior made Zhou Xuejun blush on his behalf, and his throat moved a few times. Just as he was about to speak, Qin Zhenhua spoke: "Welding directly into a flat surface does not reflect the technical level. Director Zhou,
I want to weld a bevel, two pieces of scrap material, with an angle of 120 degrees, how about it?"
After hearing Qin Zhenhua's words, Zhou Xuejun was stunned for a moment. One hundred and twenty degrees? Two pieces of scrap are welded directly facing each other. The thickness of the weld is one hundred millimeters. If it becomes an angle of one hundred and twenty degrees, then
You need to first cut a 60-degree bevel on the side of one of the pieces. At the same time, the thickness of the weld will become 200 millimeters!
This Qin Zhenhua actually wants to double the difficulty? No, in this case, the difficulty will increase ten times. Burning through 100 millimeters and burning through 200 millimeters are different concepts.
Are you really confident, or are you confused?
"What's the use of doing this?" Song Weize asked at the side.
"The car body is welded at a vertical angle, but the tank turret is tilted, especially the front armor, which can greatly increase the tank's protective thickness." Qin Zhenhua said: "This is the role of tilt welding.
"
"Look, have you never seen the world?" Yu Changhong began to adjust the welding machine to the maximum current, and said to Qin Zhenhua: "The tank body is welded, and the turret is directly cast. Someday, I will take you there
Foundry shop, look at our turret pouring, and you will understand."
As an apprentice who has only been in the factory for a few days, what do you know?
"That is a backward tank. The cast turret has long been outdated. Welding the turret is the way to go." After Qin Zhenhua finished speaking, he glanced at Song Weize: "I wonder if our R&D room thinks so?"
I used to feel that the R&D room was very sacred, because my father was the leader of the R&D room, but after I came here, I felt that Song Weize was nothing more than that. Now, let’s see if Song Weize understands modern tanks.
"Now, there is this point of view." Song Weize said: "Some people think that casting is better because it facilitates the formation of a smooth shape, and some people think that the welded turret has a larger space and is easier to use composite armor."
This guy, after talking for a long time, it’s as if he didn’t say anything!
"So, the advanced hydraulic transmission system must be useless? Some people must think that the pull rod is good, and some people think the steering wheel is good?" Qin Zhenhua's words were already sarcastic.
During World War II, Germany began to use steering wheels to control tanks, relying on advanced hydraulic transmission systems, but we have always used the pull-rod method. These people have been ingrained in their ideas for decades. Look,
It won't change in the future.
Song Weize's eyes flashed with light, and he wanted to say something, but stopped again.
Qin Zhenhua shook his head and started to make preparations.
If you want to convince Yu Changhong, of course you have to use your absolute advantage to crush him! It doesn't matter if he welds one hundred millimeters thick, watch me weld two hundred millimeters thick!
Putting on the mask, Qin Zhenhua pulled out the gas cutter. After lighting it, the hot flames cut along the edge of the steel plate. First, he had to cut out the oblique angle.
It is quite time-consuming to burn through such a thick steel plate. Qin Zhenhua's hands did not shake at all, he steadily operated the acetylene flame, cut off an edge, and then burned the large steel plate into small pieces!
Who is as long as you in welding? The comparison is about skill, not length! You picked up the short one first and thought there was nothing I could do? I can cut it open.
After cutting the steel plate, Qin Zhenhua started to apply the grinding wheel again, trimming the edges that had just been gas-cut. The sound was extremely harsh and resounded throughout the entire workshop.
The edges of the two steel plates were polished, and then the two steel plates were fixed and the welding handle was stretched out. Qin Zhenhua exhaled a long breath, okay, let's take a look at my welding skills!
Nothing else compares to it. As for welding, this is my unique skill. The thin ones can be welded to fuel tanks, and the thick ones can be welded to armor steel!
Holding the mask in his left hand, covering his face, and holding the welding handle in his right hand, he lightly touched the welding seam, and sparks came out. Then, Qin Zhenhua began to concentrate on welding!
The welding rod is being consumed at a speed visible to the naked eye. Soon, there is only one end left in the welding rod, just like the chalk has been used up and only the tip of the chalk is left.
At this time, the speed of replacing the welding rod must be fast. The welding seam is still red at this time and will fade soon. If it cannot be kept up in time, the welding seam will not be strong.
What? He actually let go?
Under everyone's gaze, they saw that the handle of the protective mask held by Qin Zhenhua in his left hand actually loosened, and the mask did not fall off, but floated in front of Qin Zhenhua's face, sticking firmly to him.
eyes, continuing to protect him.
What happened? How did he do it? Is it haunted?
This is not the most surprising thing. I saw Qin Zhenhua pick up a welding rod with his left hand and hold it to the edge of the weld. Then, holding the welding handle in his right hand, he pinched the clamp and removed only the root of the welding rod.
After throwing it away, I clamped the new welding rod and continued welding steadily. It took absolutely no more than 1 second before and after. It was simply a miracle!
How did he do it? Isn't he afraid of electricity?
The electric welding machine has a small voltage and a large current. The voltage when it is no-load is less than a hundred volts, and the voltage when it is working is only thirty or forty volts. As for the current, it is several hundred amps when it is working.
Theoretically, the human body has high resistance and will not cause danger. Don't think that it will be okay. In fact, if you try it, being poked by the welding handle of the welding machine will definitely be more uncomfortable than being shocked by an electric baton. Maybe it will really happen.
dead person's.
Therefore, when clamping the welding rod with the welding handle, according to the normal operating procedures, you must not use your left hand to pass the welding rod to the welding handle in your right hand. Instead, use the welding handle to reach over and clamp it into the welding rod barrel.