The dawn of dawn is lit up, and the sound of roosters crows one after another. After a night of hard work, in the grass shed in the backyard of the Su family, with the connection of the last pipe in place, the first thing that can really be called a steam engine is finally presented to everyone.

This is a huge iron lump, from the boiler in the front section to the iron shaft in the tail, it is more than one foot and four feet long. Dense official road gears, crankshafts, connecting rods and other objects are wrapped around the main body of the boiler and cylinder, making the whole machine like a monster crawling on the ground. In the dim morning light, the whole machine exudes a cold metallic luster, and there is a strange sense of luxury.

The more than 20 people involved in the assembly were covered in oil and sweating, and the muscles of their naked upper bodies were shiny, and everyone was exhausted. However, everyone looked at the formed monster in front of them, and their hearts were very pleased. Finally, this manufacturing process that no one has ever experienced before, smelting, casting, and grinding took them more than a month. The hard work can be imagined.

What's more, they have no idea what they are trying to build, and what kind of machine they have worked so hard to get in exchange. This kind of confusion and bottomlessness in the heart is the most torturous. And at this moment, when all the parts are assembled together to form a physical object in front of them, although I still don't understand how this thing works, but since so many strange-looking parts can be put together without hindrance. Based on their previous experience, they knew that this thing was not useless, and it was not just a pile of scrap metal.

Last night's assembly process was not smooth, in addition to the assembly process of those strange parts of the assembly process is extremely difficult, the narrow area and complex parts of the connection is very precise, several times frustrating, there was even a great error. That is, there is a slight error in the size of the cylinder piston, so that it cannot be smoothly loaded into the cylinder at all, and it is naturally impossible to slide back and forth smoothly when it is barely installed, which makes Su Heng annoyed. For this reason, he lost his temper, and finally refused to allow anyone to get started, and it took him half an hour to solve the problem.

And now, so the hard work has ended, the whole machine has been assembled, and it is in front of everyone.

"After the final assembly is completed, the next step is the most critical step, the question of whether this thing can work. Master Su, let's take a rest, let everyone sleep, and let's test it again in the afternoon" Fang Zi'an's face was full of oil, but he was in a very happy mood, and smiled at Su Heng.

Su Heng's hair was disheveled, his face was unkempt, and he was no longer human.

"I can't sleep, I just want to test it right away. If there is a problem, it can be solved immediately. I don't want to procrastinate. Su Heng waved his hand.

Fang Zi'an nodded and said, "It's okay." But we have to let everyone catch their breath and eat something. Wash your body. The sky is brighter, and I can see more carefully. ”

Su Heng nodded and said, "Okay." ”

Su Heng ordered to go down, and everyone gathered next to the well in the courtyard to pour buckets of well water to relieve fatigue and heat, and at the same time, rinse the mud on their heads and faces with soaphorns. By the time they finished cleaning, Qin Xiqing and Shen Ling'er helped Sister-in-law Su to put the porridge and hot steamed buns on the table. Everyone devoured a meal, ate and drank heavily, and replenished their strength.

Fang Zi'an held two big white steamed buns and gnawed his cheeks bulging, and swirled around the assembled machine, carefully observing whether there was any

Mistakes. Qin Xiqing came to Fang Zi'an's side and said softly, "Zi'an, your dream is about to come true." I didn't expect this thing to be created by you. ”

Fang Zi'an swallowed the steamed bun in his mouth and said with a smile, "I don't dare to say that I succeeded, I have to test it before I dare to say that I succeeded." If the test fails, it's just a pile of scrap metal. ”

Qin Xiqing said, "It will definitely succeed, I firmly believe in this." The last time you made that thing so rudimentary, you succeeded, not to mention the fact that it took more than a month and spent so much energy and money to create something now, I have a hunch that it will succeed. ”

Fang Zi'an smiled, "Then I will borrow your auspicious words, I hope everything goes well." ”

Qin Xiqing looked at the behemoth in front of him, and said with sincere admiration, "If I hadn't seen it with my own eyes, I wouldn't have believed it, so many steel parts were saved together by you, and it didn't look like much, no less." It's amazing how close each and every part fits so closely. I really don't know what kind of structure is in the minds of you people, just coming up with these things is enough to make people admire the five bodies to the ground. If it were me, I'm afraid I wouldn't have thought of this for the rest of my life. ”

Fang Zi'an smiled and said, "Then don't be surprised, everyone has their own skills." Just like you can compose and sing music to dominate the world, each has its own expertise and ability. As the saying goes, it is not difficult for those who will learn, and this is the truth. ”

Qin Xiqing smiled and said, "What kind of trivial skill am I, it's not worth mentioning." Are you tired or not, do you want me to help you beat your shoulders?"

Fang Zi'an laughed in a low voice, "In front of so many people, do you dare, you are not afraid of their jokes"

Qin Xiqing said: "What is there to be afraid of." ”

Fang Zi'an looked at her face that was also a little tired, and said softly, "You have also stayed up all night, and you are very tired, I can't let you work anymore." It's dawn, too, or you can go back. I don't know how long it will take. If it goes well, if there is a problem, it has to be reassembled and solved. I don't know when it's going to end. ”

Qin Xiqing shook her head and said, "I'm not leaving, the last moment is the most critical time, I go back at this time, and the front is in vain." Moreover, this is also the moment you value the most, I will naturally stand by your side, share together when you succeed, and bear it together if you fail. ”

Fang Zi'an was moved in his heart when he heard this, and reached out to hold Qin Xiqing's hand and nodded gently.

"Ready, ready. Start testing. Su Heng clapped his slap and shouted loudly and walked out of the house, and the craftsmen who were eating in the yard and closing their eyes and pretending to sleep all jumped up, ate in two bites, and quickly gathered under the grass hut.

The sky was bright, and under the command of Fang Zi'an, everyone was preparing for the test in an orderly manner. The five-foot-tall iron boiler began to fill with water, the door of the furnace below was wide open, the blaster was connected to the place, and a large amount of charcoal was carried and piled aside. In order to facilitate the exhaust of the smoke gas, Su Heng even ordered someone to lift the roof of the grass shed above the boiler to prevent the smoke from filling the grass shed.

Fang Zi'an and Su Heng did the last systematic inspection to confirm that all the parts were assembled in place, and the test officially began. The charcoal fire burned at the bottom of the boiler, and after a stick of incense, the water in the boiler began to boil. When the steam pushes open the floating plug of the steam orifice, and the steam coming out of the steam orifice is ejected quickly and rapidly, it indicates that the water vapor in the boiler has reached a certain pressure.

"Master Su, pull the airlock." Fang Zi'an shouted in a deep voice.

Su Heng nodded and said, "Okay."

, then you're welcome. This is the time when you should have done it, but I will not give it up, because I have already poured too much hope into this object. ”

Fang Zi'an smiled and nodded, Su Heng put his hand on the wooden handle of the airlock, slowly turned the valve, and turned the air outlet. The high-pressure steam in the boiler suddenly found an outlet and instantly rushed out of the air port and poured into the pipe. The pipe runs straight into the cylinder, instantly filling the space on the left side of the cylinder.

Fang Zi'an stared closely at the external crankshaft connected to the cylinder, and his heart was extremely nervous. Not only him, but everyone's eyes were on it, because they knew that only by pushing the piston in the cylinder, driving the crankshaft to push and pull back and forth, and turning the front gear, could it be considered a success. The risk is that no one knows if the steam is strong enough to push the pistons and whether the reciprocating mechanism in the cylinder will work. Whether the piston leaks or not, or whether the sealing is good. The valve of the switch intake in the cylinder does not open with the push of the piston, so that steam can be poured into the space on the other side, pushing the piston to move in the opposite direction. In fact, there is no reference or answer to these kinds of questions. Everything can only be seen by the result.

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Boom

After a roar, the crankshaft was pushed. With a puff of steam, another boom sounded, and the crankshaft was pulled back again. This time is less than a breath, but for Fang Zi'an, this is already a long time of evolution of mechanical technology that has spanned hundreds of years. Back and forth, the crankshaft just drew an irregular ellipse, driving the main gear to turn around.

The rhythmic reciprocating sound of pistons sounded loudly, although the roar was harsh, but to the ears of Fang Zi'an and Su Heng and others, it sounded better than any beautiful piece of music in the world.

"It's successful, Fang Gongzi, we've succeeded." Su Heng said in a trembling voice, looking at Fang Zi'an's eyes with excitement, he rarely had such an excited moment, but at this moment, he was really emotional. More than a month ago, this Fang Zi'an told himself the mechanical principle of this idea that almost made people think of a madman, and at first, even he didn't believe that this thing could be built and succeeded. But now it's all right in front of you. It's really impossible to be able to move with the power of steam alone, but it's a complex transformation. For himself, from this day on, he can be regarded as surpassing his ancestors, completing the metamorphosis, and becoming a real master of manufacturing.

Fang Zi'an understood his mood, and of course his own mood was also very excited, and grabbed Su Heng's hand and laughed, "Yes, Brother Su, we succeeded." Hahaha, it worked. ”

"Successed"

"It's amazing"

The crowd around them also shouted and jumped excitedly. Everyone watched the operation of the steam engine with wide eyes, the pile of inanimate steel seemed to come to life at this moment, under the impetus of the steam, the gear transmission was strong, all kinds of pipe rods were running happily, all the force was transmitted forward, and finally the iron spindle with the thickness of the arm in front of it got all the strength, and it was rotating rapidly.

Boom, boom, boom

Accompanied by the wonderful rhythmic sound of machine operation, the roar of mechanical power in the true sense sounded for the first time in the world of the Great Song Dynasty. It was an epoch-making roar, and it was an incomparable sound of industry. This moment will forever be engraved in the annals of the Great Song Dynasty and even the world.

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