Eight hundred and seventieth chapters heart-shaped glass
Yuan Qingfeng, Lu Hao and others hurriedly stepped forward to salute.
"Meet the Master!"
"Master, have you eaten?"
Duhe was very frustrated.
Just two disciples, even their greeting styles are different.
What a useless thing!
I can’t even learn the traditions of my master!
Du He quickly walked towards the table.
Li Ke said excitedly: "Teacher, look at this glass, it's so big!"
Yuan Qingfeng said: "Teacher, look at this glass, it's so white!"
Lu Hao said: "Teacher, look at this colored glaze, it's so good!"
Du He: "..."
Mo Yifei stood aside, staring at Du He with bright eyes, as if a primary school student was waiting to be praised after cleaning the toilet.
He glanced at the glass and said calmly: "There are too many impurities, there are problems with the raw materials, the proportions are wrong, the calcining temperature is not enough, the surface is uneven and has pits, there are already small cracks on the edges, and the cooling method is wrong.
The shape is irregular and no standard mold is used... This is just a test product and is of no use!"
What?
Li Ke and others all widened their eyes.
Such a perfect piece of glass was worthless in the eyes of the teacher.
Little did they know that the piece of so-called colored glaze in front of them was not even as good as the glass windows of the old house where Du He lived when he was a child.
Mo Yifei's eyes suddenly dimmed, her eyes were filled with tears, and she was about to shed tears.
Suddenly, I heard Du He say: "However, it is already amazing to be able to create it, and it can still be improved... You all can go, Miss Mo, you stay and show me your experimental records. It should be better."
There is room for improvement!”
Hearing this, Mo Yifei raised her head and her hands trembled with excitement: "Really...really?"
"certainly!"
"Very good!"
Mo Yifei hurriedly looked for her experimental records.
Yuan Tiangang and others left the yard.
Walking outside, Lu Hao asked curiously: "Teacher wants to improve the method of making colored glaze with Miss Mo? Why don't you let us watch?"
Li Ke said angrily: "You guys know nothing. Think about it, this colored glaze is made by calcining it. The furnace is in the yard, and it can be felt extremely hot even from a distance. If Miss Mo and the teacher re-fire the colored glaze,
, what should I do if it gets hot?"
Lu Hao blurted out without hesitation: "Of course I'll take off my clothes!"
"That's right," Li Ke looked like he had come before, "I am a lonely man and a widowed woman, what can I do if I take off my clothes?"
Lu Hao shook his head: "I don't know..."
Li Ke said speechlessly: "You really know nothing. Forget it, even if I tell you, you don't understand. You don't understand the joy of getting along between men and women..."
As he said this, the guy laughed shamelessly.
…
In the yard.
Du He read through Mo Yifei's experimental records attentively.
He discovered the raw material problem in Mo Yifei's records.
After countless experiments, Mo Yifei determined that the raw materials for firing colored glaze are: quartz sand, limestone, and feldspar.
These are very common mineral raw materials that can be collected around Chang'an, and the R&D center has a large amount of storage.
Du He put down his notebook and said, "One of the problems I just mentioned is the ratio. If you want to get pure colored glaze, you need to add another raw material!"
"What kind of raw material is it?" Mo Yifei asked, quickly picking up a notebook and pen and preparing to record it.
Du He held his chin with his right hand and said, "Why don't you try adding alkali stone!"
The so-called alkali stone is a kind of snow-white stone found in salt mines in the provincial capital. It looks similar to salt, but it is not salt. It tastes extremely bitter and is highly toxic. After people eat it, they will suffer from vomiting and diarrhea. In severe cases,
It can even kill you.
Afterwards, Du He and Mo Yifei started to get busy.
The first step is the ingredients.
This step of work is quite simple. With Mo Yifei's experimental records, Du He basically operates according to the ratio of raw materials.
Du He turned against the guest and became the master, while Mo Yifei became the assassin.
Somehow, as soon as Mo Yifei got close to Du He, she felt her heart beating loudly, and her usually nimble hands suddenly became recalcitrant.
She even dared not look into Du He's eyes.
The second step is melting.
Put the raw materials into a special earthen pot and put it in the stove.
Add coal to the bottom of the furnace and light the fire. Mo Yifei and Du He took turns stepping on the foot-operated blower to allow the coal in the furnace to fully burn and reach the melting temperature.
Around the stove, the temperature is getting higher and higher.
Du He was already sweating profusely.
Because Mo Yifei was wearing thin clothes, her clothes were all wet with sweat at this moment, and her figure was clearly visible, and Du He was in awe.
The third step is to take shape.
This is a very critical step.
Du He took a palm-sized mold made of wootz steel that he had already prepared and placed it on an iron shelf near the stove. Then he quickly took out the earthen pot that had been burned into a liquid state and removed the impurities floating on the surface.
Then pour it into the mold, continue to remove impurities, and then let it cool slowly.
Four or five hours passed.
A piece of glass is formed.
Du He carefully took away the grinding tool, and a flawless piece of palm-sized glass was displayed in front of Mo Yifei.
The glass is heart-shaped and two inches thick.
There are some small bubbles and impurities in it, but compared to Mo Yifei's previous works, it is more than a hundred times better.
Du He wiped the sweat from his forehead, glanced at Mo Yifei's chest, and sighed: "It's not easy!"
He suddenly felt a little dry.
Mo Yifei said excitedly: "Master Du, we succeeded!"
She raised the piece of glass and looked at it carefully, smiling happily, like a child.
After a while, she suddenly looked at the kind-hearted Liuli reluctantly and asked, "Can you give this to me?"
Du He nodded: "Since you like it, it's yours! However, Miss Mo, there is something I want to discuss with you!"
Mo Yifei carefully held the glass in her hand, "Master Du, please speak!"
Du He then said: "I want to establish a Datang Academy of Sciences, with you as the dean, and specialize in studying such things in the future... Of course, the most important task is to intensify research according to the method we have just tried, and use
As soon as possible, build an assembly line and start building glass!"
"Glass, you said this thing is called glass? Isn't it glass?" Mo Yifei asked curiously.
Du He said with a smile: "In the past, this thing was called Liuli, but from today on, it is called glass!"
Glass?
Mo Yifei looked confused.
But since it was Du He's name, she would never object.
In this way, the Datang Academy of Sciences was established.
Du He took Mo Yifei and taught him step by step how to conduct research.
Mo Yifei summoned a dozen experienced craftsmen and began to study the mass production of glass day and night.
This kind of small-scale production can definitely make Du He a fortune.