In the middle of the night, a qualified mold finally came off the CNC machine. Qin Zhenhua's hands were shaking a little and his eyes were red. He measured it carefully and finally breathed a sigh of relief.
Next, we need to find a special pouring workshop and use a special alloy to pour it out!
Just leave the pouring to other master craftsmen. At this time, the advantages of the maintenance workshop are revealed, because the workers in this workshop are transferred from other workshops, and they know all kinds of skills, including fitters, welders, and lathes.
Some of them have even spent time in the pouring workshop.
Then came the other parts. The most difficult part was made, and the rest became easy. A week later, Qin Zhenhua’s eyes were as red as a rabbit, but an identical replica was finally created.
, the next step is to test drive after installation.
Now, those in the R&D room have no choice but to take credit. This hydraulic torque converter was copied and measured in our maintenance workshop, so we have a share of the credit.
Otherwise, if an apprentice like Qin Zhenhua goes to the R&D room, the credit will be divided among them all. He may not even be eligible to have his name on the commendation letter to celebrate his achievements.
The R&D room is also very nervous. If the results are not produced, the superiors, once they become angry, may give it to other factories to copy. It is easy to get the task, and it must not be messed up. Song Weize and Ma Pan
The mountain has been patted on the chest.
Now, with a smile on his face, Song Weize watched his men put the replica back into the M48 tank.
After the imitation is completed, it’s time to test it. The best test platform is of course the M48 tank. As long as our test imitation product runs well on it, it means it is successful.
"Director Song, the installation is in place." Du Youwen was also very happy at this time. Although he was quite unhappy when coordinating the torque converter, that thing was difficult to process and it was really impossible to make it in the R&D room.
Although high-horsepower ones have been imitated in the past and used on locomotives, they were large in size and did not require high precision. The torque converters used in tanks today are quite small and require high precision.
After a day of installation, it was already sunset. Everyone was holding back their energy. Song Weize said: "Start it, test it for a lap, and then call it a day."
Detailed testing requires going to the shooting range and running hundreds of kilometers to check the reliability. As for now, let’s watch it move first.
"Yes." Du Youwen answered, got into the tank, and with the roar of the motor, a clicking sound began, and the engine started.
The M48 tank has had many models. Initially, it used a gasoline engine, which was a very strange design. Although the fuel tank was large enough, the maximum range was only more than 100 kilometers, which was absolutely useless and relatively useless.
In comparison, a tank with a diesel engine can easily reach a maximum range of three to four hundred kilometers.
The U.S. Army also had enough. In the later period, it finally replaced the gasoline engine with a diesel engine. Continental's AVDS-1790-2A diesel engine suddenly extended the maximum range of this tank to more than 400 kilometers.
Now, the model of this M48 tank is M48A3, which is a later version with an improved diesel engine. This is not the first time Du Youwen started to drive it. He skillfully pushed the automatic transmission to the high forward gear, and the only thing left was to step on the accelerator.
This power system is so good that there are only two forward gears, yes, two. Even the 212 Jeep still has three forwards and one reverse. Look at the automatic transmissions of later generations of cars. You can say the least.
There are five or six gears, and many even have nine-gear boxes.
However, this is not a problem. If there are too many gears, it will be troublesome and the operation will be complicated. This gearbox is electro-hydraulic controlled and can be automatic or manual. Anyway, there are only two gears, high-range and low-range, and
, due to the function of the hydraulic torque converter, it can be started directly in high gear, and the rest is left to the hydraulic torque converter.
For tank soldiers, it is very enjoyable to drive such a tank, especially if it starts directly at high speed, it almost feels like ejection, without having to change gears, and there is no loss of power.
Du Youwen slowly stepped on the accelerator pedal, gradually increasing the intensity, and the roar of the rear engine increased. At this roar, he felt the tank shaking, and then it was time to move forward.
The people below also stood more than ten meters away and watched. They saw that the tracks began to shake. Then it was time to move forward. Their imitations could achieve the performance of the original products!
But why not move forward? I watched helplessly, but the tank just couldn't move.
Du Youwen was very surprised. He pressed the accelerator pedal harder and harder. The engine behind him roared and ran at high speed. It had reached its maximum speed, but the tank still couldn't move!
Du Youwen could only release the accelerator, wait until the speed slowed down to idle, and then push it to the low gear. The operation just now was supposed to be no problem. Now, since the high-end tank can't move, let's try the low gear.
The speed continued to increase, and the tank's tracks seemed to vibrate a few times, but the tank just couldn't move!
Weird, what's going on?
The onlookers frowned even more, and Song Weize shouted from below: "Are you in gear?"
If you only press the throttle and the tank doesn't move, it's like it's in neutral.
"Of course it died." Du Youwen said: "It feels like the tank has a tendency to move forward, but it just can't move."
If I put it in neutral, the tank won't move at all. Now, it can't move even if I want to, so there must be something wrong with the transmission system!
"Check!" Song Weize shouted.
After turning off the engine, he opened the rear cover, Du Youwen put his hand in, and immediately howled: "It's so hot!"
The part he reached in happened to be the part where the gearbox and the engine were connected, which was the torque converter! Now, the casing was so hot that two blisters appeared on his hands.
He waved his hands and said: "The problem with the torque converter is that it only generates heat and cannot reliably transmit power! Qin Zhenhua, this idiot, can only brag!"
If the gear is engaged and the tank does not move, it means that the power cannot be transmitted. If it is the previous fault theory, then the clutch is broken. Now, the hydraulic torque converter has replaced the clutch, so it must be the hydraulic torque converter.
The torque converter is broken and it's so hot that the energy of the engine is used to stir the hydraulic oil inside, and the power is not transmitted to the rear!
Song Weize's face looked extremely ugly.
"Let's go and find him to blame!" Du Youwen shouted: "The maintenance workshop is trying to harm our R&D room! Qin Zhenhua is the culprit!"