Chapter 174 Brick firing completed! [Please subscribe]

"The period will last until you graduate~"

Listening to Ren Yan's answer, he looked at Shi Lei's nod.

The students in Class 9 suddenly felt a little messy.

Why did you agree so easily?

What a great opportunity to tease Teacher Ren~

Why did Shi Lei let it be postponed so easily?

With the mentality of trying again, the students in Class 9 continued to persuade.

The reason is nothing more than that.

There is no such shop after passing this village~

You should accept it as soon as you see fit. What you get is yours.

All in all, Shi Lei should enjoy himself in time and not waste this rare opportunity.

But in the end, Shi Lei shook his head and rejected all the students' proposals.

It wasn't that he wasn't interested, but that he always felt that it was a waste to use such a good opportunity to do all these things.

If his classmates could offer any constructive suggestions, he might listen to them.

But now, Shi Lei still wants to keep this opportunity and use it when needed in the future.

"Okay, okay, don't encourage Shi Lei. If you have the time, why not increase your knowledge and hold the right to make demands in your own hands next time? Wouldn't it be possible to do whatever you want?"

Ren Yan on the side spoke calmly.

Hearing this, the students in Class 9 were startled and suddenly became more energetic: "Teacher Ren, is there another time for this kind of prize-winning guessing game?!"

"Huh, who knows~" Ren Yan shrugged, did not answer directly, and changed the subject: "But now, let's continue to solve the problem of the low-temperature kiln."

"Otherwise, I'm afraid you won't be able to live in a brick house when school starts."

With that said, Ren Yan squatted next to the mud cake again and began to pile soil along the edge of the mud cake.

"Now that we have the most basic means of increasing firepower, the next step is to make a basic building shell."

"There are various styles of low-temperature kilns. As long as they can accommodate what you are calcining, in theory, you can make it into any shape."

"However, there is also a most basic requirement during this period, which is to allow the low-temperature kiln to perfectly absorb the firepower below, so the initial base must be stacked along the mud cake we made before. It is best to

Make it a perfect fit.”

"This will prevent the firepower from leaking out, and the efficiency will be greatly improved."

"Of course, if you want to bake more bricks at once, you can make the fire mud cake larger. I will simply tell you the principle here, so you won't waste time making it that big."

While talking, Ren Yan began to build up the soil layer by layer on the fixed base.

The Class 9 students on the side were slightly puzzled: "Teacher Ren, since we are going to vent the fire, do we really not need to dry this mud cake before using it?"

"If it's wet, will it affect the dispersion of firepower?"

Hearing this, Ren Yan looked back at the students with a hint of appreciation in her eyes: "This is a good question."

"In fact, under normal circumstances, this fire hole is mostly made of some iron products, and there will not be the problem you mentioned."

"But now the environment is simple, so we can only use soil."

"Theoretically speaking, drying will indeed improve some effects, and it will definitely be better than moistening."

"But it's not that the wet ones cannot be used. It's just that we need to light a fire first to dry it out. At the same time, we can check the entire shell of the low-temperature kiln to see if there is any exposed fire."

"It's like killing two birds with one stone and saving a lot of time."

"So I didn't go to dry it."

While talking, Ren Yan asked again:

"But remember, after any fired building is completed, a fire needs to be carried out to test the completion of the building."

"This step cannot be saved under any circumstances."

“Not only to improve the yield rate of products and save materials later.”

"It's for your own safety."

"Anything that has anything to do with fire, even if it seems harmless, you must always be vigilant."

"Got it?"

After saying that, Ren Yan looked at the students in Class 9 with a serious look on his face.

When they were about to play with fire, Ren Yan felt that it was necessary for them to be more vigilant.

After all, fire has been synonymous with explosion since ancient times, and it is never a joke to anyone.

Otherwise, the profession of firefighters would not exist.

Countless people have died in the flames throughout the ages, and he doesn't want anything to go wrong with these little brats.

Seeing Ren Yan's slightly serious expression, the students rarely stopped laughing and nodded in reply:

"I understand, Teacher Ren, we will strictly implement every step."

“Strictly monitor product quality control issues!”

This answer made Ren Yan roll her eyes.

Then the students asked: "But Teacher Ren, why do you have to pile up this soil layer by layer?"

"Can't you just get it right at once?"

"No." Ren Yan shook his head: "Let's not talk about whether it can be done in one go without collapse. Just making the thickness of the surrounding mud walls the same is a very difficult thing to accomplish."

"When making a building, remember not to be impatient. It's best to work slowly and step by step, so that the things you create will be more durable."

"Using the barrier method, not only can the base be stable, but also the thickness of the mud wall can be felt with hands during the barrier system, and timely control can be carried out."

"And after the barrier, because it is superimposed layer by layer, there will be two layers of protection at their joints, which can also have a certain shell reinforcement effect."

While talking, Ren Yan had unknowingly raised the shell of the low-temperature kiln to less than half a person's height.

As a test product, it is enough for use.

Immediately, Ren Yan began to pick up a large amount of soil that had been soaked in water, and evenly applied it to the outer shell of the low-temperature kiln.

"This step is to reinforce the shell again and make the shell a whole."

Ren Yan explained timely again.

Then he threw away the soil in his hand, looked at the students in Class 9 and said, "Okay, now the low-temperature kiln is basically completed."

"The next step is to open the fire."

After that, Ren Yan started to prepare to light the fire.

As a farm experience, he honestly brought a lighter this time.

The students in Class 9 were stunned as they looked at the 'low temperature kiln' in front of them.

This thing is simply a large chimney, with a hollow pillar in the middle from top to bottom.

If Ren Yan hadn't made it himself with explanations, it would be hard for them to believe that bricks could be made from this kind of thing.

But even so, they were still slightly suspicious.

‘Can this seemingly crude thing really work?!’

In doubt, Ren Yan had already lit the fire and put it into the pit below.

The raging flames penetrated directly into the low-temperature kiln through the pits below.

After a few minutes of gathering momentum, the fierce flames rushed out of the low-temperature kiln in an instant. Anyone could see the orange-brown flame at the exit of the low-temperature kiln. Even the kiln wall gradually became dry, but there was no trace of flame.

leaked.

Until then, Ren Yan nodded with satisfaction: "When the flames rush out of the low-temperature kiln, or the kiln walls begin to dry, it means that the low-temperature kiln has been completely completed and can be used for firing."

"As for the bricks you need to bake, it's actually not that difficult."

"The main material is still clay, but in order to add some stability, it's best to mix in some plant ash."

"This will not only make the bricks easier to bake and shape, but also have higher toughness after molding."

As Ren Yan spoke, he began to mix the soil with the plant ash taken from the low-temperature kiln pits to make rectangular blocks of mud.

After getting three pieces of clay, Ren Yan put them into the low-temperature kiln and started to light a fire.

As time goes by, the surrounding temperature gradually increases.

The flames coming out of the low-temperature kiln became more and more fierce.

About ten minutes later, Ren Yan glanced sideways into the low-temperature kiln and then put out the flames.

Then use two branches to pinch out the three mud blocks that were put in before.
To be continued...