The student who was tinkering with the steam engine noticed the two people on the horse, and when he saw that it was Jing Haihou who was talking, he was immediately excited and hurriedly knelt down and saluted.

Can you not get excited?

After more than two months of busy work, it was finally built, and the top leader was still present at the scene.

But in addition to the excitement, some students began to worry, what if they failed?

Will it be punished?

Fan Jinyan didn't notice the change in the students' expressions, jumped off the horse, walked in front of the students, raised his hand to call them up, and then bent down to carefully look at the dark and cold teacup steam engine behind him.

Fan Jinyan was born in the new era, and the steam engine was already an exhibit in the museum.

The principle of the steam engine, I learned in junior high school physics, but this kind of thing has been seen in textbooks and above, and I have not seen the real object, Fan Jinyan does not know whether the big guy in front of him who looks like a teacup can drive the development of the industrial revolution like the steam engine in later generations.

Fan Jinyan was worried that something would happen, so he asked the students to take out the drawings and discuss them for a long time, and after making sure that there was no problem with the internal structure, he dispersed the people around him to a long distance before officially ordering the fire.

After the firewood burned and coal was added, Fan Jinyan also took the students far away, hiding behind a pile of small slopes to observe the situation of the steam engine.

After all, who knows if this thing is going to explode out of nowhere.

In just a cup of tea, the temperature of the steam engine gradually rose, and a white mist had already emerged from the crack at the apex.

After a while, there was a crisp crunch of metal, and the gears from the inside of the steam engine to the outside began to turn, although slowly, but as the temperature got hotter and faster.

In the end, it's like a motor, spinning at high speed.

For a while, everyone cheered, especially the students who participated in the production of the steam engine, and many of them were already crying with joy.

Many people did not know why the gears were turning, and they seemed to have seen a miracle, and several women were prostrating themselves and praying for something.

Fan Jinyan was also very happy, although he provided the drawings, it was not easy to completely understand and produce them according to the scientific and technological level of this era.

"Bang ......"

At this moment, suddenly a violent explosion sounded.

The steam engine, which was still running at high speed, burst instantly, and the teacup suddenly fell apart, and a wave of air accompanied by high temperature quickly dispersed in all directions.

The crowd that was still cheering just now suddenly stopped abruptly and looked in horror at the main body of the steam engine that was swept into the air by the air wave in the distance.

Many people were also overturned by the air waves from the shop, but fortunately, they were far away, and no one was injured.

Just now, because Fan Jinyan asked them to stay away, many people complained reluctantly.

Now, these people swallowed with palpitations.

It's dangerous......

If Fan Jinyan does not show up today, at least hundreds of people will be killed and injured.

The students who came back to their senses were also frightened, and hurriedly knelt down to plead guilty to Fan Jinyan, their faces full of despair and unwillingness.

Fan Jinyan is not much better than them, he originally thought he had succeeded, but he didn't expect something to happen. But instead of blaming the students, he comforted them and told them to find out what was wrong.

Fan Jinyan's comfort made the students even more ashamed, and they promised that they would succeed next time.

，

There are many possibilities for causing a steam engine to explode, such as the thickness of the iron wall, the tightness, the quality of the material, the internal structure, and so on.

After the temperature dropped, the wreckage of the steam engine was also pulled to the school by Fan Jinyan, who planned to find out the problem with the students himself.

After repeated examination of the wreckage of the steam engine, it was found that although the internal structure was almost deformed and damaged, there was no error or size problem.

The thickness of the iron wall has reached two fingers, which can fully withstand the long-term high-temperature implosion reaction.

What could be the cause of that?

The rubber used for the sealing was all exchanged by him from the system, so there shouldn't be any problems.

What's more, even if there is a problem with the rubber, it is only a bad seal, and a large amount of heat will run away, and it will not cause an explosion.

In the end, Fan Jinyan didn't find out the cause of the explosion, but was discovered by an inconspicuous black boy.

The black boy pointed to a crack in the iron wall and said, "It should be the problem here." ”

Fan Jinyan was looking along the place he was pointing, but he heard another fat student with a disdainful tone say: "How can there be a problem with such a thick iron wall, how dare you talk nonsense in front of the Hou Ye." ”

"No, he's right." Fan Jinyan carefully looked at the location of the crack and said seriously: "There is a problem with the quality of this iron wall, it should be directly poured with pig iron!" ”

Seeing Fan Jinyan's question, the black boy nodded and said, "Master Hou's eyes, the outer wall of the entire steam engine is first molded, and then cast with molten iron. ”

"That's it, the iron wall has an eye of the wind, and there are too many impurities in pig iron, so it can't withstand the high temperature and bursts." Fan Jinyan nodded and said.

As soon as Fan Jinyan finished speaking, the fat white face of the black boy just now preemptively said: "Master Hou, the student wants to report Luo Wei." ”

"Who's Lowe?" Fan Jinyan was stunned for a moment, but when he saw the black boy's face change, he knew that the black boy was Luo Wei, and couldn't help laughing: "Why did you report him?" ”

Seeing Luo Wei's face change, the fat white face became even more proud, and continued: "The blacksmith work of the steam engine is done by their family, and the silver is not less, but they deceive the Hou Ye with shoddy quality. ”

Alive, Luo Wei sneered, then knelt down, and hurriedly explained: "Hou Ye is clear, how dare my father deceive Hou Ye with shoddy goods, but this has always been the case, and my father didn't know that this kind of problem would occur, and I asked Hou Ye to forgive him." Student, the student then went home and asked his father to return all the silver taels. ”

You really can't blame the Luo Wei family for this, who knows what a steam engine is, and it is already a very solid job to be able to make it two fingers thick.

How could Fan Jinyan be indiscriminately wronged by a fat white face, so he smiled, pulled Luo Wei up and said: "The fault of this accident is not his father, but your lack of experience, at least Ben Hou has seen the successful operation of the steam engine." Go back and tell your father to cast it with molten wrought iron, and if he does it well, he will be rewarded. ”

After speaking, he glanced around at the surrounding students, and then said: "You too, as long as the steam engine is successful, Ben Hou will remember your great achievements." (To be continued.) )