Chaoshen Technology Trading Mall

Xu Zhenming nodded. He is naturally very clear about the difficulty of processing high-precision screw rods, not to mention screw rods processed with this special glass, so he said: "Yes, level 4 screw is 25 energy coins. One ton! As for screws with other grades of precision, how does Wang always price them?"

　　 "Mr. Xu! The price of the second-level precision screw is ten per energy coin, and the price of the third-level screw is 100 per energy coin. I don't know what Mr. Xu thinks?" Wang Bin asked.

　　 "Okay! Just do what you said, Mr. Wang!" Xu Zhenming said.

Xu Zhenming didn’t care too much about the price of secondary and tertiary screws. After all, as high-end products, tertiary and secondary screw rods are destined to not use too much, even if it is the secondary and tertiary wire he needs. The consumption of rods per month is no more than a hundred rods at most.

　　 "Then Mr. Wang! First, give me a two-ton screw for the fourth-level screw. At the same time, give me a thousand for the third-level screw, and one hundred for the second-level screw." Xu Zhenming said.

Although the quantity ordered for Grade 2 and Grade 3 screw rods is not large, these quantities are enough for Xu Zhenming's factory to use for about a year. After all, Xu Zhenming's factory has just entered the machine tool production industry. The output is not very much.

"I don’t know Mr. Xu, in addition to the screw, you also need no other products, such as machine bed, machine spindle, machine bearing, etc. made of our glass? If necessary, I can also try Now, can we use our special glass to make these parts." Wang Bin thought for a while and asked Xu Zhenming.

　　At the same time, the machine tool parts mentioned by Wang Bin are very important parts for the machine tool, and they are also parts that are not easy to manufacture. Let alone the other, let's talk about the machine bed that seems to be the easiest to manufacture.

　　 Generally speaking, the machine bed of various countries, including the world where Wang Bin is located and the world where Xu Zhenming is located, are basically made of gray iron.

　　 After all, the machine bed seems to be cast only from gray iron, but in fact there are many requirements for the machine bed.

　　 First of all, it is the requirements for wear resistance and shock absorption. Because graphite in cast iron is good for lubrication and oil storage, it has good wear resistance. Similarly, due to the presence of graphite, gray cast iron has better shock absorption than steel.

　　Secondly, in terms of process performance requirements, gray cast iron has high carbon content and is close to eutectic composition, so it has a relatively low melting point, good fluidity, and small shrinkage rate, so it is suitable for casting complex structures or thin-walled castings. In addition, because graphite makes it easy to form chip breakage during cutting, the machinability of gray cast iron is better than that of steel.

　　 Next, the hardness and tensile strength requirements.

　　 But these are all the requirements of ordinary machine bed, and those high-precision machine tools are different. Generally, high-precision machine tools have very strict requirements in terms of stress, because stress has a huge impact on the accuracy of machine tools.

　　 Therefore, under normal circumstances, high-precision machine tools will not use cast bed, but will adopt a more secure method, that is, use other materials instead of cast bed, such as granite bed.

After all, the precision of high-precision machine tools has very strict requirements. The precision is required to be in the micron level or even the nano level. However, the internal stress generated by the casting bed and the influence of the thermal expansion coefficient will definitely change its variables. More than ten microns, especially for medium and large machine tools.

　　Wang Bin saw Xu Zhenming buying high-precision screw rods. It was obvious that he wanted to produce high-precision machine tools and even machining centers in the 1980s and 1990s when he was in the world, so they must also have a great need for machine tool bed materials.

The high-temperature-resistant special glass produced by Tiangong Technology itself is a special high-temperature resistant glass for aerospace and aviation. The internal stress requirements of the glass are very strict. At the same time, the heat and cold coefficient absolutely reaches the high-precision machine tool. For the requirements of the machine bed, coupled with the performance of the glass itself, it is absolutely feasible to manufacture the machine bed.

It's just that the price of these glasses is too expensive compared to other materials. After all, the price of 15 energy coins per ton is equivalent to 15 million yuan per ton. What's more, one set The weight required by the machine bed is no longer a mere ton that can be solved.

　　Small machine tools are okay. A few tons of glass is definitely enough, but those medium and large machine tools are different. This is a big guy with dozens of tons at every turn!

　　 Similarly, machine tool spindles have very demanding requirements for these aspects, and their glass performance is absolutely capable, so now only see Xu Zhenming's choice.

After listening to Wang Bin’s words, Xu Zhenming fell into thinking. Obviously, it is absolutely inappropriate to use these glass to make machine tool beds, etc., to make machine tools for sale. Let’s not say that in his age, it is as high as tens of millions or even several Will someone buy a machine tool with a price of 100 million yuan? The problem of energy coins alone cannot be solved by money in reality.

　　Secondly, from the contact between him and Wang Bin during this period, it seems that Wang Bin and their Tiangong Technology glass production capacity is also very limited.

However, he also thought that since these glass-making machine tools cannot be used for sale, there is no problem in using them. After all, as a high-precision equipment manufacturing company, the precision requirements for equipment are never required. Endless.

In the past, Xu Zhenming had actually bought some high-precision machine tools in the science and technology mall. However, even in the science and technology mall, there are not many merchants selling high-precision machine tools or machining centers in the zero-level post-civilized area. And the machine tool processing sold by these businesses is also very high.

Take a three-level precision machine tool as an example. The general price in the science and technology mall is more than one million energy coins, not to mention the second and first-level machine tools. As for the price of real ultra-high-precision CNC machine tools, it is even more serious. The price of one machine is more than one billion energy coins, so if you don't have energy coins, you can't afford these high-precision machine tools.

Although Xu Zhenming had bought some machine tools from the Science and Technology Mall before, the machine tools he bought were only grade 5 and grade 4 precision machine tools. However, the price of these grade 5 precision machine tools in the mall is also low. Up to tens of thousands of energy coins.

　　 Although these five-level precision machine tools are sufficient for their year, or for the country of that era.

But as a machine tool manufacturer, who doesn’t want higher precision machine tools, it is better to have nano-level ultra-high precision machine tools all at once. After all, if they have higher precision machine tools, they will produce them themselves. The accuracy of the machine tool will also be greatly improved, so for the countries of their time, it is definitely a great thing.

Now, for Xu Zhenming, the opportunity is right now. The screw problem in the ball screw has been solved before. If the machine bed, bearing, spindle and other problems are solved, then Xu Zhenming and his company will manufacture some high-precision machine tools for themselves. It's not a problem.