Xu Zhenming nodded. Naturally, he was very clear about the processing difficulty of high-precision screw rods, not to mention the screw rods processed with this special glass, so he said: "yes, level 4 screw rods are 25 energy coins a ton! As for other levels of precision screw rods, how does Wang always price?"

    "Mr. Xu! The price of the secondary precision screw rod is 10 energy coins and the price of the tertiary screw rod is 100 energy coins. I don''t know what Mr. Xu thinks?" Wang Bin asked.

    "OK! Just do what President Wang says!" Xu Zhenming said.

    Xu Zhenming doesn''t care too much about the price of secondary and tertiary screw rods. After all, as high-end products, tertiary and secondary screw rods are destined to use not too many. Even for the secondary and tertiary screw rods he needs, the monthly consumption is only 100 at most.

    "Mr. Wang! First give me two tons of four-level screw rods. At the same time, give me a thousand for three-level screw rods and a hundred for two-level screw rods." Xu Zhenming said.

    Although there are not many secondary and tertiary screw rods ordered, 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, and the annual output is not very much.

    "I don''t know, Mr. Xu, do you need other products besides screw rods, such as machine bed, machine spindle, machine bearing, etc. made of our glass? If necessary, I can also try to use our special glass to make these parts." Wang Bin thought about it and asked Xu Zhenming.

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

    Generally speaking, machine tool beds in various countries, including Wang Bin''s world and Xu Zhenming''s world, are basically made of gray iron.

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

    The first is the requirements for wear resistance and shock absorption. Because graphite in cast iron is conducive to lubrication and oil storage, it has good wear resistance. Similarly, due to the existence of graphite, the shock absorption of gray cast iron is better than that of steel.

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

    Secondly, hardness and tensile strength requirements.

    However, these are the requirements of ordinary machine tools, but those high-precision machine tools are different. Generally speaking, the requirements for stress of high-precision machine tools are very strict, because stress has a great impact on the accuracy of machine tools.

    Therefore, in general, high-precision machine tools will not use casting bed, but will adopt a more secure method, that is, to use other materials to replace casting bed, such as granite bed.

    After all, the precision of high-precision machine tools has very strict requirements. The precision requirements are in the micron level or even the nanometer level. However, the internal stress generated by the casting bed and affected by the coefficient of cold and thermal expansion will definitely exceed more than ten microns, especially for medium and large machine tools.

    When 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 his world, that is, in the 1980s and 1990s. Then they must also have a great need for machine tool bed materials.

    The high-temperature resistant special glass produced by Tiangong technology itself, as a special high-temperature resistant glass for aerospace, has very strict internal stress requirements. At the same time, it also absolutely meets the requirements of high-precision machine tools for the bed in terms of cold and heat coefficient. In addition to the performance of the glass itself, it is absolutely feasible to use it to manufacture the bed of machine tools.

    However, the price of these glasses is too expensive compared with other materials. After all, the price of 15 energy coins per ton is equivalent to 15 million per ton. Moreover, the weight required by a machine tool bed is no longer a mere ton.

    Small machine tools are OK. A few tons of glass is absolutely enough, but those medium and large machine tools are different. This is a big guy with dozens of tons!

    Similarly, the requirements of machine tool spindles for these aspects are also very harsh, and their glass performance is absolutely competent, so now it only depends on Xu Zhenming''s choice.

    After listening to Wang Bin''s words, Xu Zhenming fell into thinking. It is obvious that it is absolutely inappropriate to use these glasses to make machine tool beds and other machine tools for sale. Let alone whether someone will buy machine tools with a price of tens of millions or even hundreds of millions in his age. The problem of energy currency alone can not be solved by real money.

    Secondly, from his contact with Wang Bin during this period, Wang Bin''s glass production capacity of Tiangong technology is also very limited.

    However, he also thought that since he could not use these glass machine tools to make beds for sale, he had no problem using them himself. After all, as a high-precision equipment manufacturing company, the requirements for the precision of the equipment are endless.

    Previously, 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 sellers of real high-precision machine tools or machining centers in the late civilization area of level zero, and the machining of machine tools sold by these merchants is also very high.

    Take the three-level precision machine tools for 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 worse. The price of each machine is more than one billion energy coins. Therefore, if there is no energy coins, we can''t afford to buy these high-precision machine tools at all.

    Although Xu Zhenming had previously purchased some machine tools from the technology mall, the machine tools he purchased were only level 5 and level 4 precision machine tools, but the price of these level 5 precision machine tools in the mall was as high as a universal currency.

    Although these five precision machine tools were enough for their in that year, or for the domestic in that era.

    However, as a machine tool manufacturer, who doesn''t want higher precision machine tools? It''s best to have nano ultra-high precision machine tools at once. After all, if they have higher precision machine tools, the accuracy of their own machine tools will be greatly improved, so it''s definitely a great good thing for the country of their time.

    Now, for Xu Zhenming, the opportunity is at hand. The screw problem in the ball screw has been solved before. If the problems such as bed, bearing and spindle are solved, it is absolutely not a problem for Xu Zhenming''s company to manufacture some high-precision machine tools for themselves.