Director Hu Zhenbei finally made a V-shaped spring out of tin phosphor bronze, and the number of flexion and extension exceeded 400 times, which was far beyond Zhang Guoan's requirements. Pen, fun, and www.biquge.info

The director of Hu Zhenbei was very proud, and in front of Zhang Guoan, he pressed hard and stretched out the V-shaped spring.

He said: "I really didn't expect that a few small struvite stones could have such a big effect!" ”

In fact, it is mainly the work of the coppersmiths here...... Materials are one of the main driving forces for the development of science and technology.

The coppersmiths first melted the copper according to the data requirements given by Zhang Guoan...... But it turned out to be about the same as normal tin bronze.

Zhang Guoan immediately said to the coppersmiths: "I only remember that Yin Di Anguo is refined in this way, but I really can't remember the specific data, you should repeatedly adjust the ratio of tin and struvite...... Try it repeatedly, but each time you write down the quantity in advance, some of them are charcoal, and you are not afraid of wasting it. ”

Of course, tin bronze can also be used as a spring. As early as 200 B.C., the Celts used tin bronze to make flaky springs for stone throwers...... However, the effect is not very good, and it can only be used on small stone throwers.

Zhang Guoan's requirements for coppersmiths are very broad, which is also in line with the characteristics of their industry.

They are the same as the craftsmen of steelmaking, they only know the general appearance, and they try their luck repeatedly, once they succeed once, they are all earth-shattering, like crying ghosts and gods, and they are sorry for this success if they don't make up some myths and legends...... Therefore, the director of Hu Zhenbei sometimes gets very good tin phosphor bronze, and sometimes he gets very average, the quality can never be stable, and the product can never be quantified.

Zhang Guoan can fully understand, because in addition to the fact that the temperature and time are basically controllable, the raw materials may be different every time. No two times are the same.

Director Hu Zhenbei can fully understand, because he has never heard that there will be two furnaces of the same good iron.

When this guy comes across the right material, he immediately stays like a baby...... If it is not suitable, it should be returned for other use.

Of course, he also tried repeatedly on the annealing after processing, and finally found a similar solution. Slow annealing for at least an hour or more is best.

Zhang Guoan asked them to write down their processing experience...... But they couldn't write it, so they asked them to tell it to others...... They couldn't say it, and in the end they openly demonstrated the method to the crowd, so that all the craftsmen had a certain understanding.

Tin phosphor bronze also has the benefit of being self-lubricating, making it particularly suitable for bearing ...... But Director Hu Zhenbei is reluctant, and there are not a lot of V-shaped springs at once!

Zhang Guoan said: "What is the V-shaped spring? Compression springs, torsion springs. Which S-spring doesn't matter? But now none of the bearings are important! ”

This is the truth, without the right bearing, Zhang Guoan has no way to process the right hydraulic loom!

Zhang Guoan knew that in the era of Emperor Lizong of the Great Song Dynasty, Huang Daopo, who was only 13 years old, drifted with a merchant ship to Shuinan Village in Yazhou in order to escape being a child daughter-in-law.

At that time, the cotton textile technology of the Li people was ahead of the Han nationality in the Central Plains, and Huang Daopo devoted herself to learning from the Li people to spin yarn with kapok wool, use rice wine, coconut water, bark and wild plants as pigments to tone and dye threads, and use machine heald threads, flowers, and weaving textile printing and dyeing techniques. And more than 400 years earlier than Europe, the invention of the pedal "three blooms and three lines" spinning wheel and the "waist weaving machine" loom, improve the quality of brocade.

But it has not yet appeared in the folk of the Great Song Dynasty. In this time and space, if we do not rely on the promotion of powerful departments, whether it is a new type of grain or a new technology, the development will be quite slow...... It's not slow in a hundred years.

Well, Zhang Guoan won't fight with him anymore. So he was given a task to sum up a set of best process for building roller bearings!

He retreated to the tin bronze material...... It's a little bit worse, but it works.

For this, Hu Zhenbei, the director of the factory, agreed quickly, of course, he also knows the importance of bearings.

In fact, Zhang Guoan is not omnipotent. There are too many things, he just knows what they are, and he doesn't know why, so he can only rely on teamwork.

With the increase of V-shaped springs, the members of the Liuqiu Guard are slowly installing fire cap-type mini guns, but they do not dare to let the cold weapon out.

For example, the bed crossbow.

Now the Liuqiu Guards often participate in sea drills with all their members, and they repeatedly learn techniques from sailors, helmsmen, and sailors on the two-masted clipper and on the three large and two small warships that have been repaired...... When Vice Captain Huang Zu was about to practice the gang jump, Zhang Guoan quickly stopped......

Deputy Captain Huang Zu was not happy that Zhang Chuanshou interfered with his training, and said: "How can you not practice jumping in naval battles?!" ”

Zhang Guoan said: "Yes! Hit until the other side has no one to fight, and then hit the other side safely after all surrenders and then safely get on board to receive it...... Don't risk your own people's lives! ”

"How can it be bloody?!"

"Yes! The screams of the enemy can train our bloody ...... Every member of the team must be far more important than the enemy...... Unless you practice bounce ......"

Vice Captain Huang Zu had nothing to say for a while.

Zhang Guoan didn't blame him, in this era, if you don't want to play the Jumping Gang War, it's too advanced.

Zhang Guoan said: "I will also equip everyone with a pistol......"

Vice Captain Huang Zu was overjoyed...... But what is a pistol ?!

Zhang Guoan designed a double-barreled short fire gun for these team members who practiced non-stop at sea, which could be used in close combat, especially for naval warfare.

This is relatively easy to make, still using the fire cap firing method, but you can hit two shots in a row, after installing the fire cap, pull both hammers open, as long as the trigger is pulled, the hammer of the left cylinder will hit first, followed by the right cylinder.

The range can only be meagre, and you can smash a coconut within ten steps...... Twenty steps is very difficult to get on target.

Zhang Guoan didn't rifle them, and he had to save some knives until he found a suitable tool steel.

Zhang Guoan also embedded a single-edged dagger of about seven centimeters on the handle of this short firearm, and when the two bullets are finished, the single-edged dagger can be pulled down and used as a small sickle.

After the first fire cap-type short fire gun was made, Zhang Guoan tried the gun first...... It feels like that's what it is, it's better than nothing.

Vice Captain Huang Zu has been squatting on this thing...... After Zhang Guoan's test shot was completed, he couldn't wait to take it, quickly loaded the bullet himself, and then took two steps back, holding it firmly in his hand and aiming at the coconut on the stake, this kid's wrist was very strong, and he didn't shake at all.

Both shots hit the target...... Cut, more accurate than yourself...... Zhang Guoan squinted at his live performance. (To be continued.) )