As an engineer and manager of a military machinery factory in his previous life, Li Jing hated some people to talk nonsense the most.

Especially in online novels, it will kill real time travelers.

What is said that the ancient steelmaking technology was underdeveloped because of insufficient furnace temperature.

Steelmaking is not simply physics.

Use high temperature to squeeze steel out of the ore.

The key is desulfurization, carbon addition, and high-carbon steel are the kingly principles. The carbon content and sulfur content determine the quality of pig iron and ripe iron.

The carbon content ranges from 0.60% to 1.70%, and can be quenched and tempered. Hammers, crowbars, etc. are made of steel with a carbon content of 0.75%; cutting tools such as drills, wire taps, reamers, etc. are made of steel with a carbon content of 0.90% to 1.00%.

The sulfur content is greater than 0.05%, and if the cast iron is not qualified.

Why was the quality of steelmaking with charcoal in ancient times better than coal? It was because when they made steel, they mixed charcoal or coal with ore and burned it. After the iron flowed out was cooled, it was cast iron and cooked iron.

Charcoal does not contain sulfur. As long as the iron ore contains less sulfur, of course the quality of the charcoal starter is good.

Of course, the charcoal temperature is not enough and the iron ore produces a small amount of iron, which is also a flaw.

The iron ore in Cizhou is burned in the furnace together with ore.

The original craft.

The simplicity of the furnace.

The sulfur content is terrible, and the mountains of scrap iron that have accumulated over the field have seriously exceeded the standard.

The small amount of cooked iron that was left on the site and not transported away in time can only be qualified for sulfur content.

It's also the largest smelting ground in Song Dynasty.

The official department directly under the Sansi Salt and Iron Department.

I couldn't help it, but Li Jing, who was not good at complaining to everyone, raised a middle finger at the iron factory.

,

A two hundred horse team sent more than one hundred to kill five Jin scouts.

But he did not get any useful news. The Jin army's few who knew Chinese were dead, and the last one could not understand anything and could not understand the question. He could only pull him to the grave of the villagers and chopped his head.

The convoy had three more horses, some horse meat, machetes, bows and arrows.

Under the leadership of two old blacksmiths, the horse gang members visited many imperial mines and abandoned iron smelting sites in the Fengfeng Mountains.

Finally, he entered the Death Valley with streams and cliffs. He stared at the cliffs and caves under the cliffs. Li Jing couldn't walk anymore.

It started to be laid out immediately.

A wolf's nature is not just about eating meat.

In troubled times, horse gangs travel thousands of miles, and they must kill bandits and protect goods.

So there are all kinds of talents in the horse gang, carpenters who maintain large trucks, and blacksmiths who buy iron.

I've been stumbling with the horse gang and have a bragging problem. Everyone thinks they work quickly and are professional.

You can understand what kind of life you can see at a glance.

All of them are dumbfounded now.

I don't even understand what the Li family Erlang wants to do.

Crucibles are made in the kiln, and water trucks are set up on the stream next to it.

Anyway, whether it is the wing soldiers or the horse team, they all perform their duties under his command.

Working, transporting materials, transporting materials.

Then, it's like dreaming.

Watching Li Erlang refining the alchemy.

I have never heard of steel making like cooking a big pot of vegetables.

Make the scrap iron on the pile of scrap like abandoned Tiefangshan and smash it into the pot, and add graphite powder, limestone, and miscellaneous things.

The furnace was blown by the fan driven by two waterwheels, and it rushed straight into the sky along the naturally formed flue by the valley. The high temperature in the furnace was thousands of degrees, and the cave walls felt like it was smoking. It was all familiar to work, which scared me to death.

He pushed the high shelf close to the fired crucible and stirred with iron rods stained with graphite. He was soaked in sweat.

I felt like I had walked in front of the gates of hell.

It is said that a gentleman is not good enough to be under the dangerous wall.

More than two hundred people were frightened.

How dare this guy work like this?

I was frightened, worried, and tormented every moment.

Finally it was released.

Use wood as a shelf, and shakingly carry a red crucible inside and outside, covering it with blue smoke, as if the crucible could break or burn through the wooden shelf at any time, and the iron splashed and killed people.

Chen Renjun and Wu Tan were both trembling with their feet, who thought they were brave enough to hold their feet. The small crucible that was lifted together seemed to be as heavy as a thousand pounds and could not move at all. If Li Erlang and the two old blacksmiths hadn't reacted quickly, they would have thrown the fiery iron in the crucible to the ground.

Finally, with two old blacksmiths, he poured the molten iron into the mold made of mud and sand and adhesive. Li Erlang put a crucible filled with scrap iron, limestone and graphite on a furnace set up in a natural wind tunnel.

Want to come again?

What's even more mysterious is that this guy is dead.

He made some new tricks every day, and even the old carpenter and blacksmith couldn't understand.

Split a group of people, charcoal, tinea, and sulfur crushing ingredients, and mix them together.

When that thing explodes, people can become a pile of minced meat.

"Erlang, what are you doing? Our Qizhou horse gang ran 500 miles to work in the Cizhou Valley. More than 200 people were working in this dead valley. They were not afraid of being made by the golden dog! No one believed it if they said it."

Li Jing didn't bring a system either. With a wave of his hand, he changed his magic and turned into guns and missiles.

This thing cannot be changed.

I did this kind of work in my previous life, including tools and measuring instruments.

If something goes wrong, he knows where it is.

Nowadays, we can only rely on sand to make iron molds, while casting crucible clamping pliers, water truck bearings, and replacing undustable wooden components, various tools and equipment, and various molds.

If you want to do things well, you must first sharpen your tools

The steel level must also be tested at the same time.

Then there are various components of crossbow arrows and other weapons.

After casting is completed, the burrs on the weapon parts must be polished off.

More than 200 people were inexplicably bragged and praised by Li Erlang, and rewarded them with copper coins until the seventh day.

The two newly built water trucks have become processed hydraulic lathes.

Various cast pieces and parts piled up the air-ventilated warehouse on all sides of this abandoned workshop.

When the first steel crossbow was assembled and tested, the entire camp gave off a burst of crazy cheers.

"So beautiful, I can't believe it. This was made by our horse gang!"

"It's so awesome, Erlang, why did you think of it? Such a simple pulley is more powerful than the two of you moving it! It can be worn by iron plates for a hundred steps, and the iron floating map of the Jin army cannot be stopped."

"That's right, there is a hole in sight here. If you aim at the target, as long as your hands don't tremble, won't you hit it all at once?"

Chen Renjun, Duan Qi'an, and Wu Tan took the first batch of crossbows and couldn't let go of them.

"You know, just the quality of this steel, I don't need to hit it with an iron hammer to know it's a treasure. I've never seen such good steel in my life. Not to mention making crossbow arrows, I can cut all the weapons in your hands into scrap iron!"

"Brave, right? How old is Erlang? The blacksmith in Cizhou has been making steel for generations, and the imperial court has run the government. Can the steel we make better than those in Cizhou?"

"Tsk, if you want the steel you can recognize, I will not be able to run hundreds of kilometers with the horse team in this chaotic world!"

Old Yang blacksmith spoke with his apprentice.

Praise in words.

Li Jing was so tired that he couldn't open his eyes.

He has been too tired these days, so he is drawing drawings while staring at work.

Close your eyes are the process, principles, and data of making weapons.

"Chen Aizheng, please pay attention to the alert. I'm going to sleep. I'm so sleepy!"

Just as the task was about to be completed, Chen Renjun originally wanted Li Jing to make a concerted effort.

But looking at the dark circles on his tender face and haggard appearance, I really couldn't bear it.

"Okay, anyway, your spear is ready. I will let the horse team members practice melee formation with the wing soldiers in the past two days! You can rest for two days with peace of mind!"

"Send someone out to find out how many Jin soldiers in Cizhou City are best to find out where the craftsmen sent by the imperial court to go. I don't believe it. Such a large iron factory, so many workers and families can run far!"

"Don't worry, I'll leave these chores to me!"
To be continued...