Next to the Great Protectorate is Tianshan University. Tianshan University, which has only 50 people, occupies a whole three-entry courtyard. The first entry is their laboratory, the second entry is classroom, playground, etc. The third entry is naturally a place to rest. Putting aside the classroom, there are still a hundred rooms. Apart from the canteen, guards, miscellaneous items and other personnel, the university students have achieved one room per person.

There is a kang inside, a table and a chair, and a furniture for guests.

According to the students' preferences, there are a total of ten laboratories, one of which is built on a small hill.

That is naturally a place to conduct forging and testing.

This is what Sun Xiurong values ​​most recently.

The previous chapter mentioned that Sun Xiurong asked about Xi Yuanli's use of quartz sand to burn glass. Xi Yuanli was only responsible for batch-firing the products completed in the laboratory in the formal kiln outside. Xi Yuanli and his craftsmen could not figure out high-end tasks like glass.

This task has now fallen on Jia Dan's head.

A small furnace half smaller than a formal large kiln is emitting black smoke.

Since it is a furnace used for experiments, various materials must be used here, such as wood, ordinary coal, and high-quality coal. After a lot of experiments, Jia Dan determined that it was not a problem of fuel. The key issues were still two things Sun Xiurong said, one was temperature and the other was the time to add lead.

On this day, he was close to success.

After using two well-sealed bellows, the temperature of the furnace melted the quartz sand in a short time. After three months of continuous testing and spending about a thousand jin of lead and fuel, the "glass" produced finally became nearly transparent.

Even so, only one batch of ten batches of materials was successful.

But this is already quite good. In the past, no batch of 100 batches were close to success. It would be good if it could be burned into glass.

If you have 10% success, you will not have to worry about 20% or 30% or 30%.

What's more, Sun Xiurong did not want to use glass on the container, but to grind the telescope.

Sun Xiurong has ground a few pieces of glass that Jia Dan occasionally obtained countless times into a convex mirror, and then placed the convex mirror in the long tube. Such a telescope has a maximum of about three times. Although it is already a surprise, it is not enough to be used in military terms.

The method of Sun Xiurong grinding lenses was the method of Suzhou craftsmen in the Ming Dynasty, but he changed the cart there to a lathe, and the lathe worked in a foot-pedal style.

When grinding and polishing the lenses with ore sand, white mud, and brick ash, they can be ground into convex or concave mirrors for various purposes such as telescopic, amplification, myopia, etc. This work requires extreme patience and caution, and is much more complicated than grinding a gun barrel.

Although Sun Xiurong is obsessed with technology, he cannot immerse himself in these tasks.

Although there are only fifty people at Tianshan University, there is also a military-style "Suiye Jun Secondary School" next to the school. Some people with strong hands-on skills after graduation from a five-year primary and secondary school are drawn out to continue their studies. The number is not large, with roughly 300 people each year.

At present, the lack of talent in the Suoye Army is naturally impossible to classify subjects and jobs too carefully. People in universities must not only understand theoretical knowledge and be able to do it, but they also have helpers. Students in secondary schools are their helpers. There are 300 people, and each person has six assistants.

This is enough. Just leave the things completed in the laboratory to Xi Yuanli and others after indicating the process flow and formula.

So, Jia Dan also had six assistants. Sun Xiurong handed over the materials, proportions, approximate temperatures and processes needed to grind the lenses to Jia Dan, and Jia Dan taught them to these six people.

Having a yield of 10% means that Sai Ye Jun has officially entered the primary industrial era. With the optical knowledge of Tianshan University, Jia Dan will slightly revise Sun Xiurong's experience and make it more convenient for his apprentices to polish lenses.

At present, in Sun Xiurong's study, there is a telescope that Jia Dan polished. The outer frame is made of copper and several lenses are embedded in it. According to Jia Dan, this object can be seen five times more distant.

However, due to the inlay of too many lenses and to ensure the effect between the lenses, this object is at least one meter long and very heavy. If you take such things out for war, it is naturally useful, but not very convenient.

As a veteran, Sun Xiurong could see the problem at a glance.

One is the thickness of the lens;

The second is the connection between the lens and the copper sleeve;

The third is the number of lenses.

He threw these problems to Jia Dan and proposed roughly improved methods, such as telescopic copper sleeves. As for how to grind the lenses to achieve both effect and thinner and smaller, Jia Dan and his apprentices need to conduct a lot of experiments.

This needs to be done in another laboratory.

"Mirror grinding room".

Behind the hill, there is another small kiln, which is being tested for the 500-kilogram field artillery used on land.

Because the weight requirements for marine use are not so high, they can be a little rougher and thicker, but they cannot be used on land. When fighting in the wild, the side vans of the Sabreye Army must be mainly loaded with food and grass, and the space that can be provided for artillery is very small.

Therefore, it became another task for Jia Dan to try to be lighter but not lose too much quality.

Of course, it is not fair to hand over all these tasks to Jia Dan. Jia Dan has a name here, but his real work is responsible for another person who is very interested in forging techniques at Tianshan University.

Xi Yuanjing is the cousin of Xi Yuanli, the chief of the Workshop affairs of Suo Ye Jun, and was also a baptized by Suo Ye Jun’s primary and secondary schools and even universities. Among the many people who graduated from college, perhaps from a blacksmith family, he is most passionate about forging skills.

At present, he is Jia Dan's assistant and he also brings six apprentices to the laboratory. Cough cough, the small kiln on the other side of the hill to test the cannons used for land combat.

The steel-skinning method is to raise the two bellows and maintain the furnace temperature. All this is not special. According to Sun Xiurong, if you want to get that kind of steel, you must fill the manganese material when the steel is poured, but how much and when to add it, should you directly wrap the hot material and the iron material and calcinate it in the kiln, or open a small kiln to calcinate the hot material, and then pour the manganese liquid on the cooked iron at the same time when the steel is poured.

All this needs to be explored. Although Sun Xiurong has experience, his main job in his previous life was to fight wars. When he became an emperor, he could not remember anything clearly, so he could only let his subordinates continue to experiment according to what he remembered.

This experiment has lasted for about two years, and naturally there are quite a few costs, but it is obviously close to success now.

Xi Yuanjing obtained a complete set of methods of how to add heavy materials, and the success rate was less than 30%, but 30% was already a qualitative breakthrough for the current smelting.

After obtaining such steel material, casting it into cannons using sand mold casting method, which can meet Sun Xiurong's requirements.

The amount of 500 kilograms can actually reach more than 500 kilograms for ships, most of which are about 800 kilograms of artillery, and the quality may be better than 800 kilograms.

In addition to the wheels and the total weight of the vehicles carrying some ammunition of artillery has reached about a thousand kilograms, and an independent four-wheeled carriage is needed to be pulled by.

This is not a problem. The side van of the Saber Ye Jun can pull 2,000 kilograms. In addition to one cannon, it can also carry spare ammunition, etc.

If you are a thousand pounds, two pack horses are used to pull the road, the artillery will not drag the army down.

The short-barrel gun weighing 500 kilograms is more than twice the range and power of 300 kilograms!

In addition to the smelting test site, the most common ones are naturally indoors.

Among them, there are those who study machine tools, pulleys, textile machinery, and how to make the armor light and thin and maintain a certain protection ability, etc.

Sun Xiurong also has his own laboratory in the Protectorate.

In his previous life, he studied mechanical manufacturing. In his previous life, he had the experience of smelting steel to make cannons and muskets in the wild forest. Now, he is naturally not the turn of a large-scale trial production, but he can still make some small objects with the crucible steelmaking method.

In his laboratory, the clamp, flintlock, short gun, and improved short crossbow have been made. For the first two, he did not want them to be released immediately. At the moment, the sulfur and saltpeter used for making muskets are extremely short of, and the ones used on cannons are a bit short of, so it is impossible to use them in large quantities on muskets.

He was just curious and itchy.

However, he made a lot of improvements to the powerful crossbows used extensively by the Tang Dynasty.

With time, a laboratory, and a few assistants he selected from Bogda Camp, he restructured the single-body crossbows and strong crossbows of the Tang Dynasty.

At present, he has improved the material of the crossbow body and string, plus some pulleys and mechanical devices to increase the range and strength of the previous three-stone crossbow and two-stone single crossbow with an unchanged weight.

For example, the actual range of the three-stone crossbow has increased to 400 meters, while before it was 300 meters; the single crossbow with two-stone force has also increased from the previous 240 meters to 300 meters, an increase of 60 meters from the previous 200 meters.

Don’t underestimate the increased range. This is the biggest secret of the Ye Jun.

In the past three years, Sun Xiurong has repeatedly tried and tested the materials used for the two crossbows, and it has only been finally confirmed recently. However, if you want to test the materials and equip the Shattered Ye Jun in large quantities, you have to wait a few years because the Shattered Ye Jun’s current strong crossbow is very smooth.

But Bogda Camp will definitely be the first to use it.

With 500 kilograms of short-barrel cannons, strong crossbows, and single-body crossbows, the Broken Ye Army can provide continuous strikes to the enemy at a long range of 500 meters, 400 meters and 300 meters. After approaching, there will be baptisms of bows, shotguns, and thunder. If you get closer, you will face the formation attacks of the Mo Dao and the Tiger Spears.

As long as Ye Jun himself does not make any mistakes, there will be no opponent in this world.

Of course, the enemy is coming one after another with ten times the force, and the Slash Ye Army will definitely not be able to defeat it. However, the Slash Ye Army can dispatch at least 500,000 mobile corps, so the enemy will need 500,000. In this world, it is not impossible to dispatch 500,000 troops at once.

At present, all the field troops of the Tang Dynasty are only about 500,000. It is natural for Bingbo Silin, who is used to using cannon fodder, but he cannot cast all 500,000 people in one direction.

"It's really a worry-free place"

Thinking of this, Sun Xiurong couldn't help but lie on the rocking chair and close his eyes comfortably.

But he quickly opened his eyes, and it was a person who kept him alert at all times.
Chapter completed!