A few days later, the guy at Yang Qilang's blacksmith shop sent a second batch of iron castings. Pen fun and pavilion www.biquge.info

Song Ziqiang was pleased to find that they actually welded the handle of the runner instead of the one-piece continuous casting he painted, presumably because they thought that welding pig iron was more convenient than conjoined casting.

What a good thing! He didn't expect that this plane would also be welded!

He looked at the soldering interface repeatedly, and saw that it was most likely the lead-tin soldering method they were using.

Without looking up, he asked, "What do you use for solder?" ”

The fellow immediately shut his mouth and refused to speak.

At that time, Song Ziqiang had been observing the welding effect and did not look at his expression.

He asked, "Do you preheat the weldments in advance when welding?" Is it high or cold? ”

The guy's expression became more serious, and he decided that Song Ziqiang was going to steal art.

Song Ziqiang waited for a long time without him replying, the effect of this welding is really good, very strong. They don't like the hard work of making sand molds.

When he looked up and saw the expression of the guy, he was suddenly furious in his heart, "Sample, you still keep it a secret!" Tell me, what kind of technical level do you guys call that?! I'm just curious......

He didn't ask anymore, what can there be in this time and space, at most it is lead-tin soldering, and maybe a little mercury is added, what else can this thing do if it can reduce the welding temperature and converge the weld? Then maybe add a little borax, but is there borax on this plane now? Wait for them to check the information......

But this time, what made Song Ziqiang happy was that he really brought more than a dozen pieces of graphite......

But Song Ziqiang asked quietly: "Do you still have blacksmith assistants?" ”

The guy thought for a moment and said, "There's still a little ...... in the shop."

"Don't say so lax words, how many catties can you have!"

"Less than two pounds...... There are stone daisies sold in the market, which are for women's thrushes...... But it's a little different from that......"

Song Ziqiang said: "In this way, if you take out five catties of graphite, you can exchange it for a pencil for us, a very useful pencil...... It's the kind of ...... you see."

When the fellow heard this, he was happy and said, "It's easy to say, it's easy to say, I can deliver five catties and ten catties next month, and there are ...... in other shops."

Song Ziqiang was also happy, this time he earned it again, he said happily: "Okay, then I will give you a pencil next month, we agreed to an agreement, exchanging goods for ......"

Seeing that the little guy left happily, Wan Shida also said happily: "Graphite tong pot, there is a way for the tool steel of the Great Song Dynasty, and I have been worried about the material of this tong pot......"

Song Ziqiang said indifferently: "What's there to worry about, wait to get a water conservancy or something to smash it, and then."

Grinding it finely, then molding it, clay sintering, it's all easy. ”

Their custom-made chisels are used by those Da Song technical students, who want to learn lathe technology, even if it is carpentry

The lathe should also start with learning to play chisels!

Wan Shida also watched them play the big Song style football team game, so he said: "You guys are divided into groups according to the teams of the game, and start playing chisels according to the pencil marks I drew!" ”

He then gave a demonstration of how he had neatly punched a side-opening tongue and groove in hickory wood, and it was exactly the same as a pencil mark.

The students said they understood, and they began to follow suit.

But there is still one professional referee left, Wang Zheng.

Wan Shida said, "That's right, help me shake the flywheel first, and follow my orders to shake it." ”

So, all kinds of strange sounds began to come from the room.

The students studied seriously, and the two professors not only worked their own, but also strictly demanded their movements, hand shapes, and strength with each step.

As the old saying goes, if you want to become a turner, you should first learn to use chisels.

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At this time, Wu Dapeng found that he had become an idler.

His four friends are happily building the Hongshuixi Industrial Park in the Great Song Dynasty, and Quiet is dedicated to taking care of everyone's lives, even the two village women are busy, and those students are gradually having a purpose now, but what about himself?

He found that when the time came to exchange some cash or goods, there would be nothing for him.

The economic capacity of this county is still too small for him to toss.

He left some of the so-called fine goods he had brought from that world in his hands, and the bigger Lin'an Mansion was still waiting for them.

However, if this Hongshuixi Industrial Park cannot be initially built and formed, they will not be able to leave.

Zhang Guoan and the quiet couple made it clear that they would not go to Lin'an Mansion for the time being, and the allure of those so-called super cultural relics to them has now decreased sharply.

Under the sky of this Great Song Dynasty, no matter how exquisite things are, in their eyes, they can't even catch up with the importance of a hillside.

Speaking of hillside land, interject a few gossip.

Professor Zhang Guoan led those students very busy for a while.

In their spare time, they reclaimed more than 10 acres of surrounding barren slopes, and also applied silt and green manure at the bottom of the river as base fertilizer, but the work was still quite tiring.

Of course, this kind of work is not as interesting as playing football.

In such collective labor, Hou Dongfang and Zhang Depei were the most willing to work and work silently; Gu Jianshan and Guo Ziren are the most lazy, and sometimes they are willing to contribute only after kicking a few butts.

The rest of the students were generally normal.

Professor Zhang Guoan had to kick the ass of two lazy guys.

Gu Jianshan touched his left buttocks and said angrily: "Professor Zhang, it's not a lazy place, like this hillside, you can see everything, you see, where is there someone here to open up wasteland?!" ”

Guo Ziren touched his right buttocks and said angrily: "Professor Zhang, it's not that I'm lazy, I heard that the object is almost just a yam egg, this thing is not rare......

Professor Zhang Guoan sneered and said: "It is these three things that can save hundreds of millions of people, if you add corn, it can open a prosperous era; Waiting for fertilizer and pesticides to be added, even if you mess around, you won't starve to death, you say, how can you be lazy now? ”

The two boys were speechless, because Professor Zhang Guoan said, don't be unconvinced, they will see the effect soon.

In terms of crop varieties, Professor Zhang Guoan first brought the world's three major potato categories.

Potatoes, sweet potatoes and cassava.

Needless to say, potatoes and sweet potatoes are both high-yielding and virus-resistant varieties, and there is no need to consider their detoxification for the time being in three or four years, and their role is needless to say.

Cassava, but he brought not the highest-yielding variety, but the poorer-yielding breaded cassava.

Cassava contains cyanogenic glycosides, which are easy to be poisoned when eaten and can lead to death in severe cases. Therefore, it must be soaked in water for a long time before eating and cooked to remove toxicity.

When this thing was still in South America, the primitive peoples there would use complex processes such as rubbing, pressing and heating to detoxify.

But breaded cassava is basically not poisonous, and it doesn't matter if you eat it raw. They don't want to bother to always tell how to do it correctly, and the production is lower, and that is measured in tons.

The starch content of this raw cassava is 20 to 30 percent, and the starch content after drying is 80 percent, which is more than that of potatoes and sweet potatoes.

In the plan, Professor Zhang Guoan's main uses for tapioca starch and dried flakes are edible, feed and industrial development.

Eating is the simplest requirement, it contains the same number of calories as rice, and is 116 kcal per 100 grams.

As a raw material for the production of feed, tapioca meal and leaves are a high-energy feed ingredient, and if you add fish bone meal and other ingredients, this is the best organic compound feed.

In the fermentation industry, tapioca starch or dried chips can be used to make alcohol, citric acid, glutamic acid, lysine, cassava protein, glucose, fructose, etc., which have important uses in food, beverage, medicine, textile dyeing, papermaking, etc.

So that's a good thing.

Professor Zhang Guoan is the first to plant them all.

Everyone was busy, but Wu Dapeng was idle.

He wants to help Quiet grow vegetables, Quiet is afraid that he will treat the vegetable seedlings as weeds, and now these small seedlings are hope, but they can't be hurt.

He wanted to help his friends, only to realize that he didn't know anything.

Song Ziqiang said: "You sort out the warehouse, don't mess up." ”

As a result, they don't have anything in their warehouse now, it's all pecans!

It's all done in an hour.

What else are you doing? Even those two village women are hiding from themselves, damn it, they are older than me, what else can I do with you?

Didn't you just tell a yellow joke, what are you pretending to be serious?

On that day, Wu Dapeng was really bored, he saw two village women washing clothes by the river, so he went over to tell them a joke.

He also wants to see if his words can be understood, and he has been getting along for many days.

Wu Dapeng said: "There was a nun who lived with a monk in the neighborhood, and the two of them couldn't hold back their loneliness, so they dug a hole in the wall, and every night the old monk stretched out that thing into the hole and said: 'Sunrise in the East, Sunrise in the East'!"

The nun took off her pants and walked to the cave for a while, and over time, the old monk's behavior was seen by the little monk, who also wanted to see what was inside.

It happened that one day the old monk wanted to go down the mountain to practice the Dharma, and he wanted to stay outside for a night, so that the little monk could watch the door at home.

At night, the little monk, like the master, shouted at the entrance of the cave: 'The sun rises in the east!' ’

Then he thought to himself: There was still light, why did it turn black?

So he took the candlestick, pulled out the candle, and put it into the hole, and heard the 'ah' sound inside, and there was nothing.

The next day, when the old monk returned, he was lonely and unbearable, and shouted at the entrance of the cave: 'The sun rises in the east!' There was no response, 'Sunrise in the East', and there was no response, and another call was called 'Sunrise in the East'.

At this time, I only heard the nun say, 'The old man is hurt, the old man is hurt!' ’”

The two village women didn't seem to react when they heard this, and they were still washing their clothes.

Wu Dapeng laughed for a long time, but he didn't mean anything, so he left.

After he left, Sun and Liu were happy for a long time.

Sun said: "This Wu Dalang looks embarrassed, I'm afraid he has taken a fancy to me and waits for ------."

Liu said: "It must be, it must be, you see that he has nothing to do all day long, and he is circling around me------"