"For what?" Seeing that Yun Fei was selling Guanzi, although Ou Yuanshan was very dissatisfied in his heart, he could only follow his meaning and ask Yun Fei what he wanted.

"For what? I think this is a problem that I reckon, the management of all machine tool production plants is aware of. At the same time, all the workers will ask, obviously the whole country has established a large number of factories, the market demand is getting bigger and bigger, for what machine tool market is not as hot as the eighties. ”

"I said you kid, let's talk about the subject directly, how can there be someone like you who is always appetizing! You're not busy, I don't have as much time as your boss to work for, otherwise you will deduct my salary because I didn't do my job well, who should I go to? ”

Seeing that Yun Fei was still continuing his nonsense, Ou Yuanshan's impatience was directly expressed.

Yun Fei, this bastard, is probably mostly trying to save wages. Don't look at the salary of his workshop director, which is several times higher than the salary of the previous workshop director, but his workload is also several times that of the previous workshop directors of the 9327 factory.

Jiuyi Heavy Industry, as long as it is related to heating, is divided into the smelting workshop. Take the current smelting workshop as an example, it is a merger of the original woodworking workshop, sand turning workshop, and heat treatment workshop.

In fact, the workshop has not changed, and the content of the work has not changed. It's just that the original three sets of management teams have been changed into the current one. The smelting workshop is now the largest workshop in the entire Jiuyi Heavy Industry, with nearly four hundred personnel!

Evil capitalists!

Regarding Ou Yuanshan's impatience, Yun Fei hurriedly patted his head. During this time, I don't know what's wrong with Lu Dao, everything is nonsense, as if you can't say the subject without enough nonsense.

It's all idle! Yun Fei despised himself in his heart.

"The reason why many machine tool companies produce machine tools that can't be sold is not anything else, the main thing is the quality problem!" Yun Fei pointed out the direct cause of the recession in the domestic machine tool market.

Beginning in the eighties, China's economy recovered rapidly. Domestic waste to be revived, especially the most basic machinery industry, related to almost all industries. Stimulated by market demand, major machine tool production plants are expanding rapidly, and the lathes, milling machines and even planing machines, which are in the largest demand, are in short supply in China. There are many foreign machine tool factories that have exported these ordinary machine tools to China.

Among them, Japan is the worst, a 636 lathe with a maximum processing diameter of 360mm and a long workpiece of 1000mm can be sold at a high price of 60,000 or 70,000 yuan in China! This shows the demand for these machines in the Chinese market in the 80s.

Domestic machine tool manufacturers. Driven by the huge profits brought by the huge market demand, the pursuit of quantity has gradually relaxed the control of quality, so that the equipment sold is simply not comparable with the previous production.

Since the main buyers of these machine tools are in the private market, many of which are private factories, they do not have the same schedule as state-owned enterprises. These machine tools are running at full capacity 24 hours a day, and many people buy lathes that have been used for less than a year, and the machining accuracy has decreased a lot. Especially those factories that do forging parts and intermittent cutting parts, those equipment. Even in less than half a year, the newly purchased lathe milling machine can only be used for rough machining of blanks.

The main reason for this is that the aging of the machine tools they produce is not handled well.

Domestic factory, which used to produce machine tools. They all learned from the big brother of the Soviet Union, and they all use natural aging. This natural time limit is generally calculated in years, stimulated by the domestic market demand, where can they give up a year's profits? Machine tools in many factories. It is even bought on the market after only two or three months of natural aging.

In this way, the aging treatment does not meet the design requirements, and the bed structure of the machine tool is not very stable internally. In the case of external forces. The bed of the machine tool does not disappear because of the internal stress, and the new stress is generated, and the bed of the machine tool will gradually deform.

The most obvious manifestation is the bending and deformation of the machine tool track.

The machining accuracy of the machine tool depends largely on the accuracy of the guide rail. When the guide rail is bent, the trajectory that was originally a straight line during the machining process becomes a wavy line, which is very subtle, but it is particularly obvious in the machining of 0.01 mm. Because the trajectory of the tool or workpiece determines the shape of the machined part.

Those old machines from the 60s to the early 80s would not have this problem. Because the natural aging time is long enough, and in the process of use, if the machine tool is deformed, those mainly owned by the state-owned factories will have special fitters to repair the guide rail, so that the curved track becomes a straight line again.

The quality has deteriorated, hurting the interests of the private bosses who pursue profits, and even if they have such a demand, they will no longer consider buying a machine tool production plant that has allowed them to go to work once. Even if the price goes down, they won't buy it. Therefore, many people would rather spend a high price to buy a good machine tool, and will not spend a low price to buy more junk equipment.

Leaving a contemplative look on his face, Yun Fei walked towards the machining workshop.

"Scrapped, no matter what reason you have, this spindle must be scrapped!" Yun Fei had just walked to the door of the inspection room in the finishing workshop when he heard Cheng Feng's angry voice.

"Manager Cheng, isn't this a little out of tolerance (0.01mm, I will directly use the technical terminology of machinery in the future), and it will not affect the use of ......" A worker in his thirties said good things to Cheng Feng and looked forward to Cheng Feng's mercy.

"You're a master, and it's not a year or two to do this, right? The tolerance given on the drawing is only minus seven μ (0.007mm), you make it now, directly to minus nine, you say it can still be used? Does it affect the use? Are you a turner or an assembler? Cheng Feng simply roared.

"What's this, we used to be out of the box, and we didn't use it as usual? At most, it will take a while to make another one...... "The worker is still there arguing.

In the process of operation, it is inevitable that there will be mistakes, in the past in the 9327 factory, as long as the deviation is not very large, the use of the position is not very critical, in addition to the inspection and the relationship between the workers in place, at most after the attention of a word, it will pass, even if the service life of the parts is not long, then do a replacement on it.

"Scrapped, I don't want to hear you explain this, this is a scrap list, you fill him in yourself!" Cheng Feng didn't continue to pay attention to the worker, put down the micrometer in his hand, took out a stack of scrap sheets from the pocket of his work clothes, and directly tore off one and handed it to the worker.

"This spindle, I think you are qualified, and you want me to fill in the scrap form, but there is no door! Aren't you just trying to deduct our winnings? Lao Tzu will see how you buckle it today! The worker's face turned pale, and he directly grabbed the scrap sheet in Cheng Feng's hand, crumpled it in his hand, and then threw it on the ground, and then stepped on it with his foot, looking at the manager who was not very old and transferred from Huadu with a playful face.

Cheng Feng's face instantly turned the color of pig liver.

When Yun Fei saw this, he knew that if he didn't go up again, something would happen.

At the beginning, Yun Fei heard that it was a little out of tolerance, and felt that there was no problem in letting it go, as long as it was not used in key positions, but then he heard that there was only a tolerance range of seven μ, and he knew that this must be the key part of the key, otherwise the requirements would not be so high. This must be used to install bearings. Whether a machine tool is accurate or not, the spindle is also critical.

However, Yun Fei is rarely curious in his heart, the part with a tolerance of 7μ should be ground out of the grinder, although the lathe with good skills can also be cared out, but the surface roughness cannot achieve the effect of the grinder at all.

Originally, I planned to see how Cheng Feng, the quality manager who had not had much contact with him for almost a year, would deal with this matter, but when he saw the performance of the worker, he hurriedly stepped forward. He was worried that this uncle-like worker had beaten Cheng Feng.

Cheng Feng is a newcomer to the outsider, most of these workers in the factory have been working together for more than ten or twenty years, if there are really workers who come out to shout, someone will definitely come forward to beat Cheng Feng, the quality manager who represents the inspection against the workers who are working.

In the machining industry, the contradiction between inspection and workers far exceeds the contradiction between workers and managers.

In the production process, workers will inevitably make some mistakes, especially the processing of parts with high precision requirements. However, the general lathe processing, the minimum processing error will also be more than one line two, the error of general lathe processing, parts with higher precision requirements, the tolerance is generally one line two, one wire eight, two wire one, two wire five these tolerances.

The main thing is the position of the bearing on the shaft and the position of the bearing in the hole. If it is not difficult to process the grinding machine, or the parts assembled with it have special requirements in terms of fitting, the grinding machine will be used. Of course, the production of small batches of single pieces is also processed by lathes.

"What's going on?" Yun Feiyuan asked.

"This spindle, three bearing positions and two out-of-tolerance, one out-of-tolerance and one half-a-wire......" Seeing that it was Yun Fei, the young boss, a petite female inspector in her thirties introduced the situation to Yun Fei?

"How can a grinder be so bad?" Yun Fei didn't know what was going on, but he still pretended to be confused.

He is quite familiar with the machining technology of lathe spindles. The process of the grinding machine after the light is divided into three processes: coarse grinding, semi-fine grinding, and fine grinding.

"It's not from the grinder, it's the lathe." The turner just now suddenly said to Yun Fei.

"Who arranged it?" Yun Fei was immediately furious!

Many experienced state-owned enterprise masters will not process in accordance with the technological process. As long as there is no problem, no one will be held accountable. Yun Fei understands this problem better than anyone else, but he doesn't want that kind of problem to occur in his factory. (To be continued......)