This commercial street is funded and built by the auspicious central government, and the funds from the lease and sale will also be owned by the auspicious lord's mansion and the government council, but the tax is different.

There are only two kinds of auspicious commercial taxes, land tax and tax, the land tax is handed over to the local town government or district government town, and the tax is handed over to the government affairs yuan, of course, the part belonging to the lord's mansion, the Ministry of Finance and Taxation should be separated.

After determining the trip to the royal capital and the decoration of the pedestrian street, Wang Xuan began to think about 'invention and creation' again.

First of all, I had a meeting with the optical research group of the research institute, and set up an optical instrument manufacturing factory, modeled after the bearing factory, and distributed 20% of the net profits to the research team, half as funds and half as personnel bonuses.

In this way, everyone is happy, and the researchers have the motivation and passion, and it is much easier to produce results.

After the other research groups learned about it, they also made a lot of energy, hoping to produce something, so that once the factory was built, their income would increase significantly, which they had never experienced before, and at this time it was hard work and talent.

After the meeting, Wang Xuan then came to the Artillery Research Institute, the people of the artillery research group have been studying the artillery casting process here, today is the day of the test gun, Wang Xuan is looking forward to it in his heart.

Seeing that the Lianghe Avenue is about to be completed and the mouth of the sea will be completely opened, everyone's heart is like a cat scratching.

Moreover, with the succession of the eldest prince to the throne after a year of filial piety, the authority of Daxia will be brought together, and the several collars who are still symbolically fighting will also die down, and be honest as a rich man.

Time is running out!

Wang Xuan sighed deeply, Qian Duoduo was already waiting for him at the doorman.

Since the wood products factory has a doorman system, it has become popular in auspiciousness, and there is no doorman in your factory, which is a manifestation of your lack of strength and strength.

Moreover, Wang Xuan set up rules from the beginning, prohibiting ushering in and sending to, and hard work is the most important, which is also the main reason why the mascot is more pragmatic.

The artillery research institute has a separate guard, Wang Xuan is recognized, and the sharp weapon of the collar can not be seen by idlers.

There are 10 people in this research group, and like other research groups in the institute, these researchers come from different places, and after settling in Jixiang, they were excavated by the research institute, and after general education and professional training, they officially joined the research institute.

In the artillery research group, six people are from Jixiang, two are from the royal capital, and two are from other territories, and they are more familiar with iron smelting and forging.

After coming to the graduate school, there are free courses similar to physics, chemistry, and mathematics every week to recharge their batteries.

At the same time, there is also the internal technical achievement exchange meeting mentioned by Mr. Qian, and the research topics of some groups have overlapping parts, once a certain group has a breakthrough, it may lead to a collective breakthrough of several groups and several projects.

These people are Wang Xuan's treasures, and many new villas have been built in the lakeside villa area where Yue Yuanqiu, Zhang Pu, Qian Yi and other masters are located, and these researchers have a set.

In addition, starting from the north of Jixiang City, a pass is required further west of Hunan West Avenue.

From that point onwards, it was a planned residential area for technologists, a research institute, a military headquarters, a military port, a test site, a military factory, a large military warehouse, etc., and it was forbidden for idle people to enter.

Ge Wenbin, the leader of the artillery group, a native of Wangdu, a family of two princes, took refuge in Jixiang after the battle of Guanpass, and his identity was confirmed by No. 4 at the end of 55.

Team member Cao Xiaowang, a native of Wangdu, a blacksmith of generations, is proficient in the analysis and judgment of materials, which has also been confirmed.

Team member Mao Yongchang, mascot, Maori's nephew of the Ministry of Construction, a very talented young man, joined the institute through Maori's recommendation.

Team member Guo Zhou, mascot, and the son of big businessman Guo Wei, is sensitive to numbers and does some recording, analysis and verification work.

There are also Ganhe, Jiang Qi, Xihe leaders, and other Li Ke, Xu Bin, Fang Nian, Gao Shang, etc. are all auspicious people, among which Gao Shang is a slave and was approved by Wang Xuan to be converted into an official auspicious household registration in advance.

After everyone met and exchanged a few words of greeting, Wang Xuan was anxious to ask about the results.

Ge Wenbin, who is the leader of the team, said: "Lord, this casting is not a mold made of clay, because the inner wall of the gun chamber cast by the clay mold is often uneven, and there are often bubbles or trachoma, and the cannon is easy to explode. ”

Wang Xuan knew about this matter, he had made a cannon with a clay mold before, and it exploded during the test of the charge, but fortunately there were no casualties.

"Now we use iron to make molds, so that the molds can be reused, and the cast gun chamber is naturally smooth, with less trachoma and high quality. ”

"How many bronze cannons have been made?" asked Wang Xuan.

"At present, there are only two, and the second one was just produced the day before yesterday. Ge Wenbin said.

"What materials are used in the new gun, and have there been relevant performance tests before?"

Wang Xuan is not at ease, cannon steel can not be made of any material, the moment the gunpowder is activated, high temperature, high pressure and huge friction will be generated in the barrel, and the material will be directly exploded.

Therefore, the material that is resistant to high temperature, high pressure, friction and corrosion, and has sufficient strength and toughness is the material suitable for the barrel, and then according to the process, there may be a series of procedures such as quenching and cooling.

Although the bronze cannon is bulky, it has a low melting point and good ductility and is not easy to explode.

The cast iron cannon is too brittle, so it is eliminated directly.

The reason why I made two bronze cannons is that in case the crude manganese steel cannon barrel or process is still unqualified, I will use the bronze cannon first, which is also prepared.

"The Heavy Industries Equipment Group provided information on the new alloy material, and we simultaneously sealed ten crucibles to heat and melt the alloy, which was then poured into the iron mold. ”

"How to cool down?" Wang Xuan was a little excited, and his four fingers struck up quickly.

"Water cooling. ”

Ge Wenbin said, "The iron mold is a hollow cylindrical shape, the appearance is very smooth after polishing and polishing, after the alloy solution is poured into the mold, water is poured into the hollow place of the iron mold, so that the barrel that has not yet cooled begins to cool from the inside, and there is a force from the outside to the inside. ”

Wang Xuan understood, "It's equivalent to wrapping an iron hoop around the cannon body, so that it can withstand higher chamber pressure, and the upper limit of the charge will also increase, yes or no?"

"Yes, we have tried many times with different cooling methods and different proportions of alloys, and this method is the most suitable for the barrel. ”

At this point, everyone in the artillery crew was also excited, because they had spent a lot of energy and tried it many times to get accurate data.

In order to manufacture qualified cannon steel, it is first manufactured in sections and then welded together, but unfortunately it is easy to break and does not work.

Subsequently, it was planned to make a solid cylinder and drill again, but unfortunately the material of the drill bit was not good, and there were not enough conditions to keep the inner diameter uniform, so the casting was finally chosen.

In order to keep the barrel compact, they also experimented with the process of forming after extrusion, although it was a primitive stamping machine for forging, but the accuracy was too low, and the iron mold inside the barrel was imprisoned by pressure after the barrel was stamped, and it was difficult to take it out.

"Good, good. ”

Wang Xuan got up and paced back and forth in the room, his hands rubbing back and forth against each other, his delicate face flushed with excitement.

"Go, please come over to the Secretary of the Army, the Secretary of the Navy, and the Minister of Logistics. ”

Wang Xuan stopped and turned to Yang Tao.

In less than a quarter of an hour, the neighing of horses was heard, and the four of them arrived at the steel mill one after another, covered in dust.

"The Lord is so anxious, isn't there something important?" Qin Chao gasped, and he didn't care about greetings, and asked eagerly after bowing.

The other two also stared at Wang Xuan nervously, if there was something, it could only be Wang Xuan's actions.

"Don't worry, it's a good thing. Wang Xuan was very happy, "Team Leader Ge, let's start." ”

When the Qin Dynasty heard that it was a good thing, they immediately breathed a sigh of relief, the army is still reorganized, and so many recruits have been recruited, training and integration are major events.

Besides, the (deputy) chief of staff is still in Hudong, and the whip commander is out of reach, so if you don't get lucky, you will suffer a big loss, but fortunately, it is a false alarm.

"Everyone, please come with me. ”

Ge Wenbin said that, and took the members of the artillery team to the Linhu shooting range to the west of the research institute, where the three guns had been transported and simply fixed.

Although Xiao Qiangzhi, Zhao Qiang, and Qin Chao knew that the research institute was working on the artillery project, the specific details were unknown, and when they saw the three metal pipes with thin heads and thick tails and some ugly appearances, they were a little unimpressed.

Mao Yongchang was no stranger to several military leaders because of Maori's relationship, and when he saw their disapproving appearance, he just smiled, and after telling some precautions, he began to prepare ammunition step by step.

"Mainly, these three are rear-loading smoothbore guns of three inches and twenty times the caliber (about ten centimeters in caliber, and the barrel is two meters long), and the maximum charge is calculated, around five catties, and it needs to be tested in practice. ”

Wang Xuan never felt that listening to a middle-aged man would be so passionate.

"Okay, okay, let's start with the bronze cannon, gradually increase the charge, test the limit. ”

"Yes. Ge Wenbin replied, "Hundreds of feet outside the vertical target." ”

The Qin Dynasty was all from a military background, and the concept of Baizhang was naturally very clear, and they were surprised and looked forward to this test.

"Ladies and gentlemen, there is a three-inch solid wood target erected outside the hundred-foot mark, which is stronger than the wood used in ordinary ships. ”

Ge Wenbin was afraid that everyone would be puzzled, so he specially explained.

"Open the bolt and load the projectile. ”

The demonstrator opened the bolt and stuffed it with a solid iron bullet.

"Fill it with gunpowder. ”

Later, the demonstrator stuffed a cylindrical paper powder bag of the same diameter, and the lead extending from the powder bag was exposed through the aperture on the side of the gun body.

"Bolt the bolt. ”

The demonstrator then put the bolt back into place and locked it up.

"Aim. ”

The command sounded, and the demonstrator aimed at the target according to the two-point-one-line sight on the barrel, according to the parabolic principle, and then considering the influence of wind speed.

At this time, not only Wang Xuan, but everyone present held their breath.

Although the time interval between the commander's orders is only a few breaths, in the hearts of everyone, it is like a cycle of centuries.

"Report, aim done. ”

"Ignite, launch!"

The fire fold ignited the exposed fuse, and the fuse burned into the barrel at a very fast speed, and in the eyes of everyone, there was a loud 'boom', and the improvised wooden frame under the barrel suddenly shattered, splashing countless dust.

This was followed by another loud bang, two of which were only instantaneous.

The smoke and dust gradually fell, the scene was in shambles, and the improvised gun carriage was scattered into fragments.

Look at the target again, as far as the eye can see, where can you still see the target!

The location where the target had been placed is gone, but the concrete wall behind it has left a scar the size of a bowl.

"Take the target. ”

With Ge Wenbin's order, after a few breaths, a three-inch target with a big hole in the middle was displayed in front of everyone.

"Shhh

Exclamations abounded.

"This is a big scar on the concrete wall after passing through the target?"

Qin Chao didn't believe it, and couldn't help asking.

"Exactly, this is just the result of a charge of two catties. ”

Ge Wenbin replied with some habitual words.

At this time, Mao Yongchang was very complacent, and Guo Yu wanted to kick him with that expression.

"Good boys, army, navy, it's not, it's not ......"

Before Qin Chao's words fell, Zhao Qiang and Xiao Qiangzhi flew three steps and made two steps, came to the concrete separation wall, and reached out and stroked them emotionally.

Seeing this, Wang Xuan felt a chill!