Chapter 83

Liang Wensheng returned to his senses and looked at the glassware on Su Shaowen's blowpipe.

He passed away in astonishment. Then he took a few steps closer and looked at it very carefully. He exclaimed, "is this a success? There is no bubble. It's really as clear as the master said. It's completely transparent! Shaowen, you are so good

Su Shaowen pursed his lips, smiling shyly, and obviously very happy.

"I'll tell the master!" Liang Wensheng couldn't help but turn around and run away!

"Elder martial brother..." Su Shaowen opened his mouth to stop him, but Liang Wensheng ran so fast that he had already run far away.

Su Shaowen looked down at the blow pipe in his hand, and his heart was filled with a sense of achievement. He decided to try again a few times to make better glassware.

He carefully peeled off the cooling glass on the blow pipe and put it on the side of the clapboard.

A lot of glassware has been placed on the clapboard in various forms, all of which were made by Su Shaowen during this period of time.

He has been trying different forces and angles to see what shape or radian he can blow out. This glass is his most satisfied work at present.

Su Shaowen put the glass up, just let go, suddenly bang! ——

The glass burst!

From the bottom of the cup split a gap, splashing glass slag cut Su Shaowen's fingers, leaving a shallow red mark.

Su Shaowen was stunned, staring at the broken glass.

How happy I was, how disappointed I am now

He thought that he was standing by the furnace day and night, constantly pondering over the various techniques of blowing glass, that he was so sweating that he could not sleep all night, and that his mouth was numb by blowing, and he did not dare to relax!

Because he was afraid

Afraid that he appears incompetent, will be sent back by Hua Qingxue.

He knew that he was clumsy and clumsy, and he was not liked by master song. He was an apprentice to master song for a year, but he had been doing chores and coolies in the workshop.

Master song disliked him for being too short and thin, and his mother thought he was not pleasant.

He wanted to learn how to make glass, so he secretly collected leftover bits and pieces of glass made by his master and elder brother. As a result, he was found out and immediately beat and scolded him.

Now he has the chance to stay in the firearm camp to make glass, which is like a dream to him. Therefore, he must not lose this job!

Su Shaowen bit his lip, turned to take the broom dustpan, quietly cleaned, and then began to make new glass.

He must succeed.

……

Hua Qingxue follows Liang Wensheng to the glass workshop of the firearm camp. As soon as she enters the door, she sees a pile of broken glass slag by the door.

Su Shaowen wiped the sweat on his face and turned around with a smile, "master, wait a moment, I'll be ready soon."

He said, and then turned back and continued to work by the furnace.

Liang Wensheng ran to the shelf next to the wall. Instead of finding the glass that Su Shaowen had just made, he found a row of broken glassware, some of which had cracks in their bodies, even though they were not broken.

"What's going on?" He was surprised and looked at Su Shaowen.

Hua Qingxue is also at a loss.

Su Shaowen came slowly with his pipe in his hand, and his expression was tense. "This time, it will not be broken It won't break... "

However, the God seemed to make a joke on him. When Su Shaowen gently put down his glass and thought he was safe, a soft tone suddenly sounded -

click, click.

There is a slit in the smooth wall of the cup, like a hair falling on it, which is very eye-catching.

Su Shaowen's eyes were red at last. He clenched his lips and looked at the cracked cup. His face was not reconciled.

"Master, I I don't know why... " Su Shaowen hung his head and looked at the blow pipe in his hand. He was very helpless.

Seeing this, Liang Wensheng felt very sorry and said, "master, Shaowen has really made the kind of glass you want. I saw it with my own eyes. There is no impurity at all! No bubbles! Shaowen works hard every day. In the firearm camp, he is always the last one to go to bed and the first to get up... "

Hua Qingxue did not seem to be listening at all, staring at the crack on the wall of the glass.

"That Master?... " Liang Wensheng called out tentatively.

"Ah Hua light snow suddenly exclaimed, hands clapping sound, "I know what is going on!"

When Liang Wensheng and Su Shaowen looked at each other, they were all confused.

Su Shaowen asked in a low voice, "master, do you know why the glass is cracked?"

Hua Qingxue's face was slightly red, as if a little embarrassed, "it's my fault. I forgot to tell you that the last step in making glass is annealing. Glass without annealing is very easy to crack, which is also called cold explosion."

"Annealing?" Su Shaowen was stunned and asked, "what is annealing?"

"Annealing is the continuous holding or slow cooling of glass products for a period of time to reduce the thermal stress in the glass." Hua Qingxue picked up the cracked glass and explained with Su Shaowen, "the glass undergoes intense temperature change and shape change in the forming process, which leaves thermal stress in the glass, and the thermal stress will reduce the strength and stability of the glass products. When the temperature drops suddenly, it is very likely to crack, so the glass products must be annealed after forming."Su Shaowen looked at the glass in her hand, "that is to say I didn't do anything wrong? Is there any problem with my blowing method? "

"Well." Hua light snow tiny smile, reach out to touch Su Shaowen's head gently, "you do very well, just a step will be less like this."

Su Shaowen was relieved and finally had a smile on his face, "master, I will do it again, this time I will remember annealing."

Hua Qingxue shook his head, "don't do it."

When Su Shaowen heard the speech, his heart suddenly hung up!

He looked at Hua Qingxue uneasily, and his eyes showed panic. He was worried that Hua Qingxue didn't think he was smart enough. He didn't want him

Hua Qingxue pondered for a moment and said, "you have to make something else for me first..."

Su Shaowen hung up his heart, and then put it down. He asked cautiously, "what does the master want me to do?"

"I'm going to Shengjing with the general in a few days. I want to make some mirrors as gifts for Shengjing's friends." Hua Qingxue looked at Liang Wensheng and said with a smile, "this matter needs your two help."

Liang Wensheng looked at Su Shaowen and Hua Qingxue, "er Shifu, Shaowen and I can't make mirrors... "

"You help me prepare tinfoil and mercury, and Shaowen makes glass of the same size as the mirror we usually use." Hua Qingxue thought for a moment, and then added, "..." Ah, by the way, we need to find some craftsmen who are good at carving to help us inlay the back of the mirror and carve some auspicious patterns

Want to make a thin and flat glass plate, Su Shaowen after this period of practice, has been competent.

In the case of thin glass, a thin layer of glass will be poured into the mold after stripping.

It's just that it's thin and brittle. How can you make a mirror?

Liang Wensheng imagined a bronze mirror inlaid with glass in his mind. How did he think it was strange

They prepared according to Hua Qingxue's requirements. In the following time, Hua Qingxue gave them a chemistry lesson, focusing on the chemical reaction process after Mercury and tin met.

All you need to do is stick a shiny tin foil on the glass and pour mercury on it. Mercury is a liquid metal that dissolves tin and waits until the two melt into a thick, silvery white liquid that sticks tightly to the glass plate, and the mirror is finished.

"The principle of a mirror is that it can reflect light. In fact, the ability of a mercury coated mirror to reflect light is not very strong, but with our current conditions, it is a great success."

Hua Qingxue looked at the mirror in the mold static reaction, with a light smile on his face and relaxed tone, "when we make distiller, we can refine silver nitrate, there will be a more convenient way to make a better mirror."

Although Su Shaowen has been making glass for some time, his chemical knowledge is his first contact. The more he listens, the more he admires China Qingxue.

"Master, you are so good that you can do anything." Su Shaowen said sincerely.

Compared with song Shifu's stinginess, Hua Qingxue has no reservation on him, and is willing to teach him no matter what problems.

Liang Wensheng's age is actually one year older than Hua Qingxue. She can't worship China Qingxue as well, "yes! Master, nothing will defeat you! "

Hua Qingxue said with a straight smile, "it's very simple. When you get familiar with this knowledge, you will understand that in fact, everything in the world we live in is composed of elements. As long as we understand the characteristics of these elements and then conduct artificial combination, we will get the effect we want."

She picked up the semi-finished glass that Su Shaowen had made before and said, "for example, in the eyes of ordinary people, this glass is a transparent and fragile object, but in my eyes, it is just silicon dioxide."

She put down the glass and picked up Su Shaowen's porcelain cup for drinking water? A cup, but to me, it's a aluminosilicate compound. The main ingredient is aluminum oxide

Liang Wensheng suddenly realized, "no wonder the master asked us to memorize the chemical element list, so that we could better understand the constituent elements of these living objects."

Hua Qingxue nodded with a smile, "there is no shortcut to learn chemistry. After reciting the list of elements, we can understand the characteristics of each element one by one. However, we have limited conditions and can't teach you one by one."

After all, it's not modern. Many chemicals can be bought directly, such as silver nitrate, which can be sold in pharmaceutical factories with any purity.

But here, Hua Qingxue can only find a way to extract.

There are also elements that are extremely rare in ancient times and are almost impossible to find.

But how to say Although it's very difficult, seeing Liang Wensheng and Su Shaowen seriously communicate each other's understanding and views on the elements, Hua Qingxue's sense of achievement arises spontaneously.

She felt that she had done a good thing, and the unexpected crossing seemed to make sense.

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