Siheyuan Great Craftsmen

"Brother, it's delicious!"

Zhou Ting watched her second and third brothers eating happily, so she also picked one and put it in her mouth. A hint of surprise flashed in her eyes for an instant, and her eyes curved into crescents as she said happily.

"If it tastes good, eat more. I'll buy more for you tomorrow!"

Zhou Tian stroked Xiaoyu's little head, and seeing the happiness of the three snacks, he felt particularly happy in his heart.

"Uh-huh!"

Zhou Yu kept nodding his head and putting grapes into his mouth.

There were not many grapes on the table, and Zhou Hao had only taken out a few. Soon, the grapes were in their mouths. After eating, Zhou Yu and Zhou Ting still felt unsatisfied.

Originally, Zhou Tian wanted to ask Zhou Hao to take out some more grapes, but thinking that eating too many grapes would not be good, he did not ask.

Seeing that they had all finished eating, Zhou Tiancai said, "Okay, now that you have finished eating, the books should have been distributed today, so go upstairs and prepare in advance!"

Hearing this, the three little ones nodded obediently. When it came to studying, the three little ones didn't dare to be careless at all. After all, they knew that although their eldest brother didn't have high demands on them on weekdays, he would never relax at all when it came to studying.

The three obedient children went upstairs one after another and started to preview in their rooms.

After watching Sanxiao go upstairs, Zhou Tian returned to his room, took out a stack of white paper and a pen, and began to plan an improvement plan for the lathe based on the lathe in the virtual space in his mind.

Lathes are also known as industrial mother machines. In the traditional sense, lathes are machine tools that use turning tools to cut rotating workpieces.

It is generally used for cutting metal.

At the same time, corresponding processing can also be performed on the lathe using drills, reamers, reamers, taps, dies and knurling tools.

The structure of a lathe is generally composed of a spindle box, a feed box, a lead screw and a guide bar, a slide box, a tool holder, a tailstock, a bed, a servo motor, and a cooling device.

As a representative of high-efficiency processing equipment, it has been used more and more widely. Lathes can process various types of workpieces such as shafts, disks, rings, etc. in various processes, and are often used to process the internal and external rotating surfaces, end faces and various internal and external threads of workpieces.

It can be said that lathes have always occupied a relatively important position in the field of heavy machinery.

In Zhou Tian's opinion, the most important part of a lathe is the tool on the tool holder. The quality of the tool is an important basis for the performance of the lathe.

After all, metal itself is hard metal. If even the tool cannot cut it, then the lathe becomes a joke.

In his memories of his previous life, Zhou Tian happened to accidentally see a lot of information about knives in a book, which included many special steel formulas. Although these formulas were outdated in his previous life, their value was immeasurable in the 1950s.

Among them, high-speed steel, cemented carbide, ceramic materials, diamond, polycrystalline diamond and cubic boron nitride are the main ones, and different cutting tools can be obtained by mixing them in different proportions.

Even in the past, these materials were still one of the important materials for turning tools.

The lathes in steel rolling mills are mainly used to cut hard metals, so high-speed steel and cemented carbide are needed as the main materials to make the cutting tools.

Originally, if higher performance high-speed steel was used, it would definitely have a huge bonus for lathe processing. However, when Zhou Tian thought that Big Brother's experts would arrive next year, his desire to come up with a more advanced high-speed steel formula suddenly faded.

After all, high-performance high-speed steel was not invented until the late 19th century and early 20th century. He doesn't want Big Brother to benefit from it in the end.

However, not using high-performance high-speed steel does not mean that Zhou Tian will not improve the cutting tools. He remembers that before the appearance of high-speed steel, there were also carbon steel and patterned steel!

Among them, carbon steel and patterned steel may have some gap compared to high-speed steel, but in this era the gap is not very large, and in his memory of his previous life, the development of carbon steel in his previous life was not weak.

If carbon steel is used as cutting tools, it is also the mainstream of this era. Although carbon steel has the disadvantages of poor heat resistance and low hot hardness, it is not impossible to improve it. There are many ways to improve carbon steel in his memories of his previous life.

The simplest one is to add some other metals to neutralize some of the shortcomings of carbon steel, such as chromium, titanium, copper and other elements, which can significantly improve the hardness and strength of carbon steel.

With the idea in mind, Zhou Tian immediately began to write down some thoughts about carbon steel cutting tools. Of course, by doing so he also had the intention of leading Big Brother astray in the industry.

After all, to put it bluntly, in the memory of the previous life, the development of carbon steel was relatively slow due to its serious environmental pollution, and its application in industry was not as good as high-speed steel.

After finishing writing about the improvements to carbon steel, Zhou Tian began to draw the blueprints based on the lathe in the virtual space in his mind.

With the virtual space lathe in the mind as a prototype, a new lathe drawing soon appeared on a stack of white paper.

After he finished drawing, he found that he had drawn no less than thirty drawings of the lathe alone, including no less than ten drawings of the spindle box, feed box, etc.

It was not until he stopped writing that he realized it was already three o'clock in the morning.

Feeling the drowsiness coming from his mind, he could no longer bear it. He hastily organized the drawings and fell asleep.

The next day, after eating the breakfast made by his second brother, he didn't even have time to see Sanxiao off to school. He gave Sanxiao a few instructions and hurriedly rode his bicycle to the steel mill.

Today is the first day he starts to modify the lathe, so he needs to go to the workshop as soon as possible to secure manpower.

As soon as he arrived at the steel mill, he saw Song Lian looking at him with resentment at the gate of the steel mill. He couldn't help feeling embarrassed.

No wonder when he left last night, he always felt like he had forgotten something. It turned out that he had forgotten that Song Lian had told him yesterday to find him if he had anything after get off work.

Although he was very embarrassed in his heart, Zhou Tian's expression was still calm. He forced a smile and said, "Brother Song, good morning!"

"What do you mean early? I'm waiting here just for you, kid! So that you won't stand me up again, Brother Song!"

Song Lian said with a resentful look on his face.

After hearing what Song Lian said, Zhou Tian couldn't hold back any longer and an embarrassed look suddenly appeared on his face.

"Brother Song, I'm sorry. I forgot what you said when I got off work yesterday!"

Song Lian was very angry because Zhou Tian stood him up yesterday, so he blocked Zhou Tian here early in the morning. But now seeing Zhou Tian's expression of admitting his mistake, his anger instantly dissipated.

After all, he himself had bad intentions, so it was not easy to blame Zhou Tian. He could only smile helplessly and said, "You kid, Brother Song, this is the first time someone dares to stand me up, so you are the first one!"