The shape of the tank hull is special, when the whole surface of the steel plate is cut first, the remaining scraps are useless, piled up in the tank factory, and finally used to re-furnace, and before the furnace, these scraps can be used by the tank factory workers to practice welding techniques.

Now, a forklift quickly sent them a few pieces of leftovers, looking at these leftovers, Yu Changhong bent down and picked up two pieces of leftovers with pry, the two edges were aligned, about ten centimeters long.

Looking at these leftovers, Yu Changhong was even happier in his heart, the two pieces he took were the shortest, and the longer the weld, the more difficult it was, because it was necessary to use many electrodes in a row, as long as there was a slight delay, it would lead to the problem of reducing the strength of the part connected by the two electrodes.

He picked out the best welded ones first, and left the rest to Qin Zhenhua.

This is not a trick on your own, you are an apprentice, of course you have to let the master choose, let the master pick first.

Yu Changhong's approach made Zhou Xuejun on the side blush for him, his throat moved a few times, and just when he wanted to speak, Qin Zhenhua spoke: "This is directly welded into a plane, which does not reflect the technical level, Director Zhou, I want to weld an inclined plane, two pieces of waste, and an angle of one hundred and twenty degrees, how about it?" ”

Hearing Qin Zhenhua's words, Zhou Xuejun suddenly froze, one hundred and twenty degrees? Two pieces of waste, directly facing the weld, the thickness of the weld is 100 mm, if it becomes an angle of 120 degrees, then you need to cut the side of one of the pieces out of a hypotenuse of 60 degrees, and at the same time, the thickness of the weld will become 200 mm!

This Qin Zhenhua actually wants to double the difficulty? No, in this case, it will be ten times more difficult, and it will be burned through 100 millimeters, and it will be burned through 200 millimeters, which is not the same concept.

Are you really confident, or are you stunned?

"What's the use of doing that?" Song Weize on the side asked.

"The hull is welded, all at a vertical angle, but the turret of the tank is tilted, especially the frontal armor, which can greatly increase the thickness of the tank's protection." Qin Zhenhua said: "This is the role of inclined welding. ”

"Look, haven't you 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, another God, I will take you to the casting workshop to see our turret pouring, and you will understand." ”

What do you know about an apprentice who has only been in the factory for a few days?

"That's a backward tank, the cast turret has long been outdated, and welding the turret is king." After Qin Zhenhua finished speaking, he glanced at Song Weize: "I don't know 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, I felt that this Song Weize was just like that, and now, let's see if Song Weize understands modern tanks.

"Now, there's that point." Song Weize said: "Some people think that casting is good because it is easy to form a smooth shape, and some people think that the welded turret has a large space and is convenient for the use of composite armor. ”

This guy has been talking for a long time, and it's the same as not saying it!

"So, the advanced hydraulic transmission system must be useless? Must some people think the lever is good, and some people think the steering wheel is good? Qin Zhenhua's words already had an element of sarcasm.

In World War II, Germany began to use the steering wheel to control the tank, relying on the advanced hydraulic transmission system, and we have always been in the lever way, these people, for decades, the concept has been deep-rooted, it seems that it will not change.

Song Weize's eyes flashed, and he wanted to say something, but he stopped again.

Qin Zhenhua shook his head and began to prepare.

If you want to convince Yu Changhong, of course, you have to crush him with absolute superiority! What is the thickness of a hundred millimeters when he welds, look at the thickness of two hundred millimeters when I weld!

Putting on the mask, Qin Zhenhua dragged out the gas cut, and after igniting it, the blazing flame cut down the edge of the steel plate, and it had to be cut out at an inclined angle first.

It was quite expensive to burn through such a thick steel plate, Qin Zhenhua's hand did not tremble at all, he steadily operated the acetylene flame, cut off an edge, and then took it with his hand, and burned the large steel plate into small pieces!

Who is longer than you welding? It's about technology, not about length! You pick up the short ones first, thinking I can't do anything? I can cut it.

After cutting the steel plate, Qin Zhenhua began to load the grinding wheel again, trimming the edges that had just been cut out by gas cutting, and the sound was extremely harsh, resounding throughout the workshop.

The edges of the two steel plates were polished again, and then the two steel plates were fixed, and the welding handle was stretched out, Qin Zhenhua exhaled a long breath, Okay, look at my welding skills!

Nothing else, welding, this is my unique job, thin can weld fuel tanks, thick can weld armor steel!

Holding the mask in his left hand, blocking the front of his face, holding the welding handle in his right hand, touching the weld, an electric spark came out, and then, Qin Zhenhua began to concentrate on welding!

The electrode is being consumed at a speed that is visible to the naked eye, and soon, the electrode is left with one end, as if the chalk has run out and the chalk tip is left.

At this time, the speed of changing the electrode must be fast, the weld is still red at this time, and it will fade soon, if you can't keep up in time, the weld will not be firm.

How? He actually let go?

Under everyone's gaze, I saw that the grip of the protective mask that Qin Zhenhua was holding in his left hand was actually released, and the mask did not fall, but was suspended in front of Qin Zhenhua's face, firmly against his eyes, and continued to protect him.

What's going on? How did he do it? Haunted?

This is not the most surprising, I saw Qin Zhenhua pick up a welding rod with his left hand, propped it up to the edge of the weld, and then, holding the welding handle in his right hand, pinched the clamp, and threw away the welding rod that only left the root, and then clamped the new welding rod, and continued to weld steadily, it definitely didn't take 1 second before and after, it was a miracle!

How did he do it, wasn't he afraid of electricity?

Electric welding machine, small voltage, high current. The voltage is less than 100 volts when there is no load, the voltage is only 30 or 40 volts when working, and as for the current, it is a few hundred amperes when working.

Theoretically, the resistance of the human body is large, it will not cause danger, don't think that it will be fine, in fact, try it, if you are poked by the welding handle of the welding machine, it is definitely more uncomfortable than being electrocuted by an electric baton, and if you don't do it, you will really die.

Therefore, the action of clamping the electrode with the welding handle, in the normal operating procedures, it is absolutely not possible to hand the welding rod to the welding handle of the right hand with the left hand, but to use the welding handle to reach over and clamp it into the welding rod barrel.

Violation of operating procedures, don't die!