A nation's industrial development begins with junior engineers.

After the two had walked a distance, Jiang Xia finally spoke up and asked Wang Kui, "Brother Wang, what happened just now..."

Wang Kui chuckled and tapped Jiang Xia on the forehead.

"Too much of a good thing is bad, you know that!"

"No, Brother Wang~~~"

"Hey! That's why you were young and naive. Someone like Master Qian must live in a tenement, where all sorts of people live. If something bad happens to him, you'll be the one who harms him!"

"Oh, Brother Wang, I understand. I just wanted to ask, are you short of money?"

"Huh? Me, a section chief, would be short of money?"

"Then give me back my two pieces!"

Silence is like punting a long pole, drifting towards where the grass is greener.

Wang Kui clenched his fists and drilled into Jiang Xia's head.

"If you see through something but don't say anything, you're still a good brother!"

Jiang Xia had a headache, but seeing the Donglaishun restaurant's still tightly closed doors made his heart ache even more.

"Due to a shortage of mutton, our store is temporarily closed!"

Hmph! Cricket and mutton? Fine, I won't eat it. I'll go back to Grandma's house to play with my little gray brother!

The two returned to the factory, and Wang Kui went to handle matters related to the security department. Holidays were his busiest time, so he naturally couldn't run around with Jiang Xia anymore.

Jiang Xia went to the small workshop and did some maintenance on the awesome Plus engine.

Unfortunately, the entire engine is now made of gray cast iron. Under high-intensity, long-term use, surface wear has already begun to appear.

This won't work; the material needs to be improved. The steel mill did send over a bunch of high-quality carbon steel billets. Unfortunately, the quantity is small, and the processing is difficult.

Let's put it this way: a skilled craftsman can file a low-speed gear in half an hour using gray cast iron, but if it's made of high-quality carbon steel, it would take at least two hours.

Given the overall level of industrial development, no matter how ingenious your design is, you can only make do.

Take your time, no rush. Jiang Xia loaded the newly made disc cutter and thresher onto the back of the truck and headed straight for Jiangjia Village with Tie Jun.

After enjoying Little Gray Brother, nothing more was said that night.

Today is National Day. Although there was no military parade like last year, the spontaneous parade by the masses has transformed the somewhat monotonous city of Beijing into a sea of ​​red.

Jiangxia drove his tractor, attached two handcarts, and transformed it into a mini-passenger service between the countryside and the city. He took the elderly people of the commune to the city for a stroll.

Although I couldn't afford to buy anything, I still got to experience the prosperity of Beijing.

After two days of excitement, everything returned to normal.

After all, just shouting slogans won't fill an empty stomach.

The busy farming season has begun, and this year's grain harvest is much later than in previous years due to drought.

However, the emergence of disc cutters and threshers has greatly accelerated the pace of grain harvesting.

The comrades from the Ministry of Agriculture were very pleased, and the comrades from the Ministry of Agricultural Machinery were very excited.

Some of the comrades in the commune were not very satisfied. Although the disc cutter was fast, the omissions were quite serious.

There was no other way, so Jiangxia came up with this cutter-type harvester, which is basically a harvester with a cutter attached to a hand-held tractor. Through a transmission device, the movement of the hand-cranked turntable and the cutter holder is converted into the up-and-down movement of the cutter to harvest the crops.

There was no cutting platform, no traction. The wheat was simply cut off at the root.

The wheat is now fully ripe, and many ears of wheat detach from the plant at the slightest touch. In this lean season, every fallen grain of wheat is heartbreaking.

But, not having to bend over to harvest the wheat saves my back, and it still smells delicious. The fallen ears of wheat are perfect for those mischievous little monkeys to expend their excess energy—that's good!

As for the threshing machine that can be driven by an engine, it received unanimous praise.

No more frantic activity!

The engine sputters and chugs, shoves the harvested wheat inside, turns left and right, and it's done!

Farm work that used to take two days to complete can now be done in half a day.

Look at that hand-held tractor slowly driving through the wheat field, towing a disc harvester. The sharp blades move rhythmically up and down, and the wheat fields fall to the ground.

The people nearby quickly collected the harvested wheat and transported it to the threshing machine.

Next to the threshing machine, the machine that used to require two people to pedal is now turning on its own.

One person simply feeds the wheat into the machine, and you can watch as golden wheat grains cascade down like a waterfall.

For the first time, the effects of mechanized harvesting shone brightly on this ancient land.

Everything was thriving, except for one workshop in the steel rolling mill...

"What's going on?! Every part is within the tolerance range. The previous few were fine, so why are these engines always grinding?"

"And this batch of crankshafts, they were fine during testing, so why did the shaft center shift off-center when they started turning?"

Several master mechanics stood around the newly assembled engine, some looking so frustrated they wanted to cry.

Sigh! Li Changfu was fiddling with a bunch of parts. The phenomenon of copying Big Brother's engine had reappeared!

That means that while each individual part is qualified, when they are assembled together, there are problems everywhere.

Yang Youning was also extremely anxious, like an ant on a hot pan: "Old Li, what's going on?"

"Uh...it's a problem with standardization!"

"Standards? They're all based on the standards in the blueprints, aren't they? The technicians measured them one by one!" Yi Zhonghai interjected from the side.

"Look, this gear has a precision of level 6!" Yi Zhonghai said, puffing out his chest. He had indeed put a lot of effort into these gears, even personally handling the polishing.

Of course, he had to do it himself; his precious apprentice wasn't qualified to stand in the newly established tractor production workshop.

Even he himself only joined the factory because they were short-handed.

Li Changfu glanced at him and said, "Master Yi, judging from the workpieces alone, you did a really good job on this batch."

"But it meshes with more than one gear. The gear below has a precision of only grade 11, while the cam has a precision of grade 10."

"Don't be fooled by their small size differences; the entire engine has 73 parts. The dimensional deviations among them add up to a considerable amount!"

"What should we do then!"

Li Changfu slowly shook his head. He naturally knew this was a problem of industrial standardization, but how to solve it...?

He didn't have a better solution.

Where's that kid Jiang Xia?

"I accompanied Minister Yang from the Ministry of Agriculture and his team to the farm for the harvest, where they said they were testing the effects of mechanized harvesting."

“Bring him back. He seemed to have mentioned a solution, but he didn’t go into detail.”

Does Jiangxia have a solution?

Yes!

Let's put it on a machine tool!

Humans are not machines, and cannot guarantee the consistency of each workpiece under high-intensity work. Machine tools are different. Although current machine tools cannot achieve very high precision, they are more than capable of assembling two-stroke engines.

But that's just stating the obvious.

Take a look around the entire workshop.

Two planers whose age is indistinguishable, eight old ordinary lathes, and the only brand-new C620-1, which was just issued by the machine department to support production.

As for commonly used manufacturing equipment such as coordinate boring machines, coordinate grinding machines, and gear grinding machines.

The workers said they'd heard of it, but had never seen it.

Of course I've never seen it.

Brother, you used to be a steel rolling mill! What do you need these coordinate milling machines for? Just for show?

Moreover, the design drawings for these machine tools are probably still in the safe at Fengtian No. 1 Factory.