Inside the blacksmith shop in the east of Hanzhong City.

The old blacksmith's wife quickly called both her eldest son and younger son over.

"Father!"

As soon as the boss and the second child arrived, they were ready to listen to the old blacksmith's arrangements.

"Whose family needs kitchen knives, iron pans, and hoes again?"

The boss asked the old blacksmith first.

These blacksmiths usually make the most of kitchen knives, iron pans and hoes.

The boss who is going to inherit the old blacksmith's shop is already comfortable with making kitchen knives, iron pots and hoes.

Especially the level of building iron pots, the boss is about to catch up with the old blacksmith himself.

"This time it's not a kitchen knife, iron pan, or hoe!"

"How could Hanzhong want to build these and call us over alone!"

The old blacksmith looked at his elder son with well-developed limbs and couldn't help but scolded him.

The eldest son's savvy and skill in ironing are really good, but he is too simple and honest.

It's the opposite of the old blacksmith's younger son.

The younger son strikes like iron, and he doesn’t like iron, he wants to go to school.

It would be perfect if the IQ of the younger son and the strength of the older son were combined.

After reprimanding the elder son, the old blacksmith looked at the younger son who looked indifferent and said:

"This is a drawing given by Hanzhonghou. Both of you will come and take a look."

After speaking, the old blacksmith placed the manufacturing drawings of the steam engine in front of the two of them.

The eldest son looked at the dense lines and markings on the drawing, and couldn't help scratching his head.

The younger son felt quite interesting after seeing it.

"The mechanism painted on it is called a steam engine by Hanzhonghou, a mechanism used to boil water."

"Both of you take a closer look and study."

"If our iron armor shop can be the first to build this steam engine, Hanzhong will be rewarded at least one hundred taels of silver!"

A hundred taels of silver is a huge sum at this time.

Enough for a family of five old blacksmiths, delicious and delicious for a whole year.

The eldest son who was scratching his head and the younger son who was interested in the steam engine on the drawing, both of them suddenly stared when they heard their father talk about one hundred taels of silver.

"Father, this steam engine is so amazing!"

"It's worth paying a hundred taels of silver for a reward in Hanzhong!"

The eldest son felt even more complicated about the steam engine on the drawing.

Compared with kitchen knives, iron pots and hoes, the complexity of the steam engine is in the eyes of the older blacksmith’s eldest son.

It's like a three-year-old child reading the Four Books and Five Classics.

After hearing the shock of the elder son, the old blacksmith couldn't help saying:

"Then our smithy must be the first to build the steam engine on the drawing!"

"This one hundred taels of silver is not so easy to get."

"This time, all the blacksmiths who opened the forge in Hanzhong City got the drawings of the steam engine from Hanzhonghou!"

This is why the old blacksmith hurriedly asked his wife to call his two sons when he returned to the forge.

For them now, time is the most precious thing, worth one hundred taels!

After hearing his father's words, the younger son felt even more challenging.

This is much more interesting than making kitchen knives, iron pans and hoes.

Not only interesting, but also a hundred taels of silver.

The youngest son felt that he had begun to get excited, and ironing became more interesting.

"Father, the difficulty of this steam engine should be all kinds of complicated shapes, as well as this chamber!"

Having been studying the drawings of the steam engine, the silent young son finally spoke to the old blacksmith at this time.

The old blacksmith was overjoyed when he heard this.

He had known that his little son was smart.

So I always wanted the younger son to inherit his smithy, and the elder son could be a helper for the younger son.

It's a pity that the younger son has no interest in ironing.

The youngest son learned the iron skills in a few days.

Now, after hearing the analysis of the younger son, the old blacksmith said excitedly:

"I can see the way? Then how to solve this problem?"

After hearing his father's question, the younger son looked at the drawing of the steam engine again.

After the steam engine was manufactured, it was the size of a table.

If it is forging, it may take a year and a half for the time alone.

So the younger son was wondering at this time whether he could cast a steam engine.

"Father, I think this steam engine is not easy to forge, and it takes too long."

"With the strength of the three of us, it may not be possible for half a year."

"So I thought of a way, and that is casting!"

After the youngest son had finished speaking, the old blacksmith couldn't help nodding.

After seeing the drawing of the steam engine, the first reaction of the old blacksmith was also casting.

The younger son was able to think of casting in a short time, which made the old blacksmith very pleased.

However, compared with forging, casting has obvious advantages and disadvantages.

Forging is to use hammering to change the shape and size of the red-hot iron bar through constant beating.

And then through quenching to change its hardness and other different characteristics.

Kitchen knives and hoes are basically forged, and the forging methods and experience mastered by the blacksmiths are also very rich.

Casting is to melt the steel and pour it in a pre-prepared mold.

Then it is cooled and solidified, and then cleaned to obtain a workpiece with the same shape as the mold.

However, casting requires that the mold cannot cause problems.

Also, when pouring molten iron into the mold, you must also master the speed and scale.

Otherwise, the inside of the cooled workpiece will be full of bubbles and cracks.

"Yes, you and the father thought of going together!"

"But such a big steam engine, and the internal structure is still a bit complicated."

"It's not easy to cast the same objects as on the drawings!"

The old blacksmith, like the eldest son, touched his gray hair and said embarrassedly.

"Father, no matter how difficult it is to cast, we currently have no better way."

The younger son withdrew his gaze from the drawing of the steam engine, and looked at the old blacksmith helplessly.

But it is this kind of difficult and challenging thing that UU reading www.uukanshu.com can arouse the interest and desire of the youngest son.

After hearing the words, the old blacksmith had to nod and admit that the younger son was really telling the truth.

The eldest son watched as his father and younger brother were discussing what method to use to build a steam engine.

He felt it was complicated.

"No matter what method is used, I will leave the effort to me! Hahaha!"

Since it was too complicated, I didn't think about it, the eldest son smiled at his father and younger brother.

It's the same as this blacksmith's shop in the east of the city.

Other blacksmith shops in Hanzhong City are also determining how to build this steam engine.

In the end, the blacksmiths agreed, all adopted the method of casting.

　　

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