After the success of the initial trial of the iron mold, Yan Zheng immediately gave the identity of 20 male male mold workers, let them be responsible for molding, and announced the establishment of the first mold factory.

The first batch of products of the first mold factory is to manufacture a batch of molds, which are used to make parts of the foot thresher.

Yan Zheng thought about it, but decided to make this artifact first, and the iron pot could be put away first.

Because now agricultural production has become more and more important, there is a lack of this kind of agricultural machinery to improve efficiency.

At the same time, this thing may be exported to Daming, and the market may be very large.

As long as it is a place where rice is grown, as long as it is a small landowner, there will be a demand for this thing.

Who wouldn't want to speed up the harvest to ensure that the paddy is returned to the warehouse in a short time?

Especially in the case of double grabbing, it is more time to save a few more days and save two more points, which means that there can be a better harvest.

Yan Zheng personally drew the design drawings and found the carpenters in the carpentry factory and asked them to process a batch of wooden molds from wood first.

If you look at the tools, the carpentry factory is the richest, because wood processing is not as good as steel processing, so the wood factory not only has planers, milling machines, boring machines and grinding machines, etc.

Recently, there has also been a profiling machine, which can process wood into the shape of a butt, so that the butt has been manufactured at a rapid pace.

The principle is also simple, that is, a high-carbon knife with the shape of a buttstock, after fixing the wood, using the stamping method to obtain a semi-finished butt, and then processing and cutting.

The wooden mold that Yan Zheng wants to build this time includes a pair of large and small gears, an iron connecting bar, a transmission device, and a pair of bearings.

The carpentry mill also has to manufacture some components, including foot pedals, including shelves for threshers.

In the whole structure, the amount of iron is very small, but the foot force is perfectly used in threshing.

It has to be said that the wisdom of the masses of the people is unlimited, and this threshing machine first appeared in the sixties in another time and space.

Yan Zhengdu had to admire, this thing was really ingenious, and he used the simplest transmission method to create a very practical device.

In those days when steel was scarce, this thing was still very economical, and the most practical tools were created at the lowest cost.

If you make a force analysis diagram, you will also be surprised by the rationality of the design of this thing, which must have been created by intellectuals and the masses of the people in those days.

After a dozen wooden molds were made, the people of the first mold factory took over.

By working closely with the First Iron and Steel Works, they also built their own crucible melting furnace.

This group of new workers cherished this opportunity very much, and they worked hard for the preferential treatment of this worker.

After many attempts and ten days of hard work, the first batch of iron molds was finally created!

This batch of iron molds as a whole barely meets the requirements, but because the thermal expansion and contraction of steel are not considered, there is a certain error in the size.

However, after casting the parts, they still need to be polished by a gear cutting machine, so this error is still acceptable.

It's just that when all the parts were cast and polished, Yan Zheng, who originally thought it was simple to build a thresher, immediately encountered another big problem.

That's the problem of connecting these parts, although there are only three places that need to be connected, but it is still a bit troublesome to get two pieces of iron together.

He first asked the people to use iron nails and wooden wedges and adhesive glue to connect the two transmission bars and transmission gears.

It's just that after the connection is good, it is still not tight, and it is easy to relax, it is estimated that the pedal will be loosened after half a day, and then it will have to stop for repair.

But when you double grab, there is so much time for you to go to repair.

After racking his brains and thinking about it for a long time, Yan Zheng still decided to directly refer to the principle of hot riveting and let these people be riveted with hot riveting.

"Iron wood needle, you should know, iron will expand and contract, right?" Yan Zheng asked.

Tiemu Needle nodded: "Son of God, you taught me, I didn't believe it before, but after I measured it myself, it was true!"

"That's good!" Yan Zheng pointed to these parts and said, "You get an iron nail, remember that the size can be a little bigger than this."

"After this iron nail is red and soft, it will be squeezed directly on these two parts!"

Tiemu Needle understood for a while, and immediately started to move.

Several blacksmiths worked together quickly, and after a while, they got a small rivet.

Under Yan Zheng's command, they placed the rivet between the two parts, and then began to knock it.

After the tapping was almost done, Yan Zheng asked them to get a little molten steel and pour it on it.

After the cooling is over, I look at the two parts again, and I find that they have been firmly combined, and I don't know how much more reliable than using a wooden wedge and iron nails!

Yan Zheng touched his chin and looked at it, and said to the iron and wood needle: "Find two with great strength, pull them hard!"

Ironwood Needle waved his hand to find two workers, and let them begin to break the combined transmission rod with great difficulty.

After they tugged hard for a while, they still didn't let go.

"Smash it with a hammer!" Yan Zheng said.

Several workers began to smash with hammers again, and after a while, except for some deformation of the surface, it was still tight.

After Yan Zheng looked at it for a while, he was faintly excited in his heart.

This shows that the strength of this hot riveting treatment is still very good, and from this point of view, this time he unlocked a more important technology.

That is, the combination of various iron parts in the future can be used in this way.

It can even be used for shipbuilding, as long as there is a lightweight steel frame structure, which not only saves huge timber, but also increases the strength of the hull.

In fact, Yan Zheng is not very familiar with this technology, the rivets they use at this time are all high-carbon steel from the crucible, and in the riveting process, they are not like pig iron and wrought iron, either too brittle or too soft, so they will have such strength.

In another time and space, there is an iron bridge in the era of the Industrial Revolution, and the iron bridge is known as a symbol of the Industrial Revolution. The riveting technology used is similar to that used by Yan Zheng at the moment!

Although according to the trend, it is inevitable to discover this technology, but Yan Zheng was unintentional this time, and let the tribe try this process in advance.

"Son of God, this method works!" Ironwood Needle also breathed a sigh of relief.

Yan Zheng smiled and said: "If it is feasible, then remember, in the future, you need to connect the iron parts, first use this process, and you have to find a few people to practice this craft!"

The ironwood needle answered, and immediately began to assemble. After working hard for a long time, the iron problem was finally solved.

The carpenters on the side were already impatient, and they took over the next work.

After the carpenter finished assembling it, a slightly rudimentary foot-operated thresher was displayed in front of Yan Zheng's eyes.

After oiling the gears and transmission, Yan Zheng tried to step on it, and the transmission rod transformed the up and down movement into a horizontal rotary movement.

As he pedaled faster and faster, the machine emitted a pleasant hum...... Airplanes...... Buzzing sounds.

Yan Zheng smiled and said, "This machine is just in time!" Our tribe has just divided the fields and worked alone, a thresher like this, not selling thousands of people, I'm sorry for the suffering I suffered in the steel mill these days! ”

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