Intelligent Industrial Empire

"Xiaoyun, tell me, how should this problem be solved?" In the machining workshop of Rongcheng Xinkaixing Ball Screw Factory, Wang Qingfeng stared at Yun Fei gloomily.

"How do you arrange the production process? Are those Soviet engineers just eating and not working?" Yunfei used a micrometer to measure several points on the ball screw produced on site, and the size of each point was measured. There are very subtle changes.

The ball screw measured by Yunfei is not very long, only more than 300 millimeters and less than 400 millimeters.Such a short ball screw has a knife phenomenon during the grinding process. For such a short screw, the middle is actually a whole bit larger than the ends!If this is a two or three-meter-long ball screw, grinding the arc-shaped spiral groove on the ball screw against the center holes at both ends. On the screw with almost no rigidity, this makes the knife phenomenon more obvious. At that time, I don’t know how much the middle will be larger than the ends.

As a result, these ball screws can't achieve the accuracy of the design at all. How can the machining accuracy be guaranteed using such ball screw CNC machine tools?

“The 45# steel we use is tempered after forging, and the thread groove is rough processed by a lathe, then the surface is subjected to high-frequency quenching, and finally grinding.” Although Wang Qingfeng, the general manager of the ball screw factory I don’t know much about the rod, but it’s impossible to know nothing about the production process.

In particular, Wang Qingfeng was a mechanical worker, and with his boss, everything used to be done by himself.

"Didn't I tell you to use bearing steel GCr15? Why use No. 45 steel?" Yun Fei was speechless.

Bearing steel is also available in China. Although the price is higher, the ball screw with high precision and the matching ball screw nut and ball are made, although the performance of the 45 steel is very close. , But the difference is still quite big.

"Soviet engineers said that our No. 45 steel has the same performance as bearing steel. No. 45 steel is easier to process than bearing steel. Especially after heat treatment, the quenching of No. 45 steel can only reach HRC Rockwell hardness of 48 degrees at most, and even if it reaches With that kind of hardness, the material has no toughness. The ball screw produced in this way will not have a long service life at all." Yunfei shook his head and sighed.

This is the bitter fruit caused by the blankness of the domestic industry.Although there are no competitors because of the high demand in the domestic market, it is precisely because of this situation that there are no professional talents in this field in the country. It is not an easy task to start from scratch.

I clearly told them to use bearing steel GCr15 to produce ball screws, but they replaced the material with the cheaper 45 steel.Does this age, no matter what you want to do, you have to stare at it yourself?Especially with regard to CNC machine tools, although there are many domestic researchers in this area, most of them are strictly controlled by the state in national research institutes. It is impossible to get those who do not understand too much, but have Well-founded researchers.

Yun Fei patted his head.He really has a headache. For such things, Wang Qingfeng is a very good senior manager, because no matter what the people under his staff say, as long as it is reasonable, as long as logical reasoning with written things can convince him, he will agree.

"The Soviets know a shit. If they really know that ordinary carbon steel can replace bearing steel, what kind of steel is there?" Yun Fei was noncommittal about what Wang Qingfeng said.It seems that it is necessary to find an opportunity to have a good lesson with the Soviets.

"Pharaoh, who is in charge of the technology here?" Yun Fei is too lazy to pursue the person responsible for this incident. Fortunately, it is still in the experimental stage. Because this first production is experimental, the quantity is only Only more than 30 semi-finished products with a length of 1.5 meters were produced.

Yun Fei understands that if the ball screws they produced this time could not meet the design accuracy requirements during the grinding process; if it weren't for their own subsidiary Jiuyi Heavy Industry, it was rectified under the auspices of various middle and senior management personnel during this period; It is not something produced in the ball screw factory that I partnered with Wang Qingfeng, but it is related to the production of the CNC lathe of Jiuyi Heavy Industry...

If it hadn’t been for many reasons that made me come to the ball screw factory at this time, maybe until the ball screw produced by the ball screw factory of the two partners went on the market in large quantities, even after many years, I would not bother with the ball. What material is used for the screw rod?

If that happens, after selling his CNC machine tools on the market and waiting for customers to use it for a period of time, Jiuyi Heavy Industry will definitely receive a snowy complaint. By that time, Yun Fei can only cry without tears.Especially in a few years, the competition in the domestic CNC machine tool market will become fierce.

China has now begun to enter the era of market economy. It will not wait a few years before it will join the World Trade Organization. If the quality is not improved, it will have a catastrophic impact on the company when it encounters an economic downturn.Once customer loyalty is lost, it is not easy to find it back.

In this era, the most important reason why China's CNC machine tools, especially domestic CNC machine tools, has been criticized is the quality problem.Although the domestic market is now blank, as long as Jiuyi Heavy Industry can produce CNC machine tools, it will definitely occupy a large number of markets soon.However, after other manufacturers have solved the problem of the ball screw, Yunfei's Jiuyi Heavy Industry will continue to shrink the market due to quality problems, until it finally has no market share.

Of course, if the price is lowered, in the Chinese market, no matter how rubbish CNC machine tools are, as long as they are CNC machine tools, there will be a market. After all, many mass-produced parts have low requirements for machining accuracy.

"Xiaoyun, this is the current Minister of Technology in our factory, Sevianvsky. The people in the factory call him dead chicken..." Wang Qingfeng shouted "dead chicken" into the workshop, and saw A middle-aged, thin white man in his forties ran towards this side.

"Boss, are you looking for me?" Sevionvsky trot to the boss who called himself "dead chicken", and said a blunt Chinese sentence with his stiff tongue, which made Yun Fei very awkward.

"Why should I use No. 45 steel instead of the bearing steel I chose?" Yun Fei stared at the opponent with a bad face, expecting him to give himself a reasonable explanation.

These Soviet engineers, although they have a very good mechanical foundation in their country, when they come here, although Wang Qingfeng has given him a position of Minister of Technology, he shouldn’t be private when he has not figured out the situation. Call the shots, change the raw materials you choose and the process route you make.

There are many differences between the Soviet Union and China not only in terms of materials, but even in terms of technical standards.

Sevionvsky did not understand Yun Fei's words, and stared at Wang Qingfeng with a look of doubt. He couldn't understand Wang Qingfeng repeating Yun Fei's words, so he could only search for the translator in the factory, even though he had time to come. Well, it's been a month or two, but for those who use alphabets, Chinese characters are not only difficult to recognize and write, but even pronunciation is extremely difficult.

Wang Qingfeng was depressed. At first, when Sevianvsky first arrived here, he told the translator that he had to follow wherever he had to go during working hours, and he couldn’t see it at the moment. Translation, where is the face of the temporary operator of his factory, in front of another shareholder of the same status as him?

"Through inquiries about material grades in the national technical standards formulated by China in 1981, I think that in most cases 45# steel can replace bearing steel..." Sevionfsky learned after translating it. The overly young man in front of him was actually his own other boss, and the shares in his hand were no less than the boss who was laughing and joking all day, so he seriously explained to Yun Fei.

"Don't tell us, you didn't analyze the materials!" Yun Fei interrupted impatiently about the product in front of him. How could he not know that in some unimportant situations, No. 45 steel can replace a lot of materials.

But the production of ball screws is precisely an important occasion!In particular, the ball screw is one of the decisive factors for the accuracy of CNC machine tools!

"..." Sevianvsky was noncommittal about Yun Fei's words.How much can such a young man in front of him know, at most twenty years old?Although I have never touched the design and production of high-precision parts products such as ball screws, there are many other high-precision parts product designs.

"From now on, I will immediately change it back. You must strictly follow the materials and production process I gave out at the beginning to carry out trial production, otherwise you will go back to your Soviet Union!" Yun Fei saw the dead chicken gritted his teeth and rose. Staring at me with a blushing face, I also know that this guy must think that he may be the second generation of the rich father in the family, and he is blindly commanding here.

Yun Fei is angry!

In his world, more than 90% of the materials used in the production of ball screws are bearing steel GCr15. Since there are on-site items available, why spend a lot of time and energy to compare various materials?This experiment will take longer.

It is about to enter 1993, and Taiwan machine tool manufacturers will soon enter the domestic market. If they cannot obtain an absolute advantage in the Chinese market when they build their factories, they will definitely fall into a protracted price war.

"The cost issue, you don't need to think about it now. Even if the 45 steel can achieve this effect, there will not be much cost left. At that time, it will cause a lot of troubles to the company because of product quality problems..." Yun Fei saw Although Sevionvsky agreed, the expression on his face indicated that he was not convinced.