In Duan Yun's view, the strength and hardness of the gears processed by the current heat treatment process in the factory cannot reach the process level of Lada automobile gearbox, and on the other hand, the steel material used is the gap between the gear material of the original Lada car gearbox.

Although Duan Yun was a little disappointed, the matter was not unsolvable, but he just needed to wait, on the one hand, he needed to find better gear steel raw materials, and on the other hand, Duan Yun also needed to wait for the pit carburizing furnace equipment purchased for him by the provincial bureau to be in place.

Judging from the drawings and materials currently mastered by Duan Yun, the steel used in the transmission of Lada Automobile is 40 CRNI, which is an alloy quenched and tempered steel with better performance and more economical, compared with the No. 45 steel currently used in Duan Yun factory, the performance parameters in all aspects are better.

However, it is not easy to find new raw material steel, although there are many domestic steelmaking enterprises in the 80s, but the process level is very limited, most of them can only produce ordinary carbon steel, like some special steel used in Lada gearbox, it is estimated that it is difficult for domestic manufacturers to produce.

On the one hand, because domestic steel products are in short supply, and on the other hand, if the order for exercise is small, the general small steel mills do not have relevant processing technology, and the large steel mills will not allocate production capacity for such small orders at all.

As far as the current situation of domestic steel mills is concerned, the four major steel companies with the best technology are: Baosteel in Shanghai, Anshan Iron and Steel in Liaoning, Shougang in Beijing, and Wuhan Iron and Steel in Hubei, and the others are the second echelon and the third and fourth echelons, such as TISCO, Masteel, Benxi Iron and Steel, Tangshan Iron and Steel, Pangang, with the above four major enterprises constitute China's ten outlines, and there are some local backbone enterprises known as the Ten Dragons, such as Handan Iron and Steel Plant, Jinan Iron and Steel Plant and so on.

In Duan Yun's view, the four major domestic steel mills have sufficient orders, and they are all supplied in strict accordance with the plan, and it is impossible to supply small factories such as their labor service companies.

Especially Taiyuan Iron and Steel Plant, after all, is an enterprise in this province, and if you let Ruiyang help, maybe you can really help produce this special steel, but this matter is not very accurate, after all, Ruiyang is only the director of a municipal bureau, and the enterprises in the provincial capital city cannot be involved.

But in any case, Duan Yun must discuss this matter with Ruiyang, if Taiyuan Iron and Steel Plant can really solve the production of this special steel, then Duan Yun, the matter of imitating the Lada gearbox has already been half successful.

In fact, Duan Yun originally planned to go to the steel mills in various places to negotiate, but at present, the production tasks in the factory are relatively busy, and he can't leave for a while, so this matter can only be postponed for the time being.

As for the transformation of the carburizing furnace, it is relatively easy, Duan Liyun has mature technology in his mind, as long as the relevant equipment is in place, Duan Yun can start to modify.

Time is like a sword hanging over Duan Yun's head, Duan Yun knows that the support that Ruiyang has given him is not unconditional, and he must also fulfill his promises, but he must remain patient when the technology and other aspects are not in place.

Throughout June, Duan Yun and his two apprentices repeatedly drove to test new samples, during which 4 gearbox samples were scrapped, but also obtained a lot of fault technical parameters, for the gearbox found that the gear jump, out of order, difficult shifting, caused by the problem, and the research team repeatedly studied, according to the wear and thermal deformation of various gears, as well as the malfunction of meshing, to find out reasonable improvement measures.

For some gears with large wear, Duan Yun must strengthen heat treatment to improve surface hardness and wear resistance, and make each gear have a relative processing technology for performance purposes.

The technology is burned out with money, fortunately, the cost paid by Duan Yun is not much, there is no advanced testing equipment and experimental workshop, and any parameter data of new products is collected by workers who repeatedly test, disassemble, analyze and inspect, and the second-hand 212 jeep that he just bought from Daxing Automobile Factory is more resistant to tossing than he imagined, although the noise is relatively loud until now, at least it has not been lying down, which makes Duan Yun feel very gratified.

After entering July, the weather became hotter and hotter, and the construction of the new plant has begun to take shape.

According to the design of the drawings, this project is a large and a small plant.

At present, the foundations of the two factories have been completed, the eight corbel columns of the main plant have also been grouted, and workers are building the walls on all sides.

In addition, the small factory building not far from the main plant is currently being built smoothly, compared to the main plant, the small factory building is lower and simpler, and it is impossible to put too much heavy equipment in it, but Duan Yun has another use.

In fact, Duan Yunjian is not a small factory for processing gear gearbox equipment, but for another purpose.

He has been thinking about opening an electronics factory in the future, attached to the factory of a rental labor service company, and this small factory will be transformed into an electronics factory workshop by Duan Yun in the future.

Duan Yun has always had such a plan, but he has not been in the big collective for a long time, and there are many things to solve, so he has no time to take care of the matter of setting up a factory for the time being, and after the new products are developed, he can free up his hands to deal with these things.

In addition, there is a very important point that Duan Yun wants to set up a private electronics factory and needs to solve a lot of things, there are many local self-employed people in Daxing these years, but private enterprises are rare, and those who can set up factories in Daxing are very hard-related people, and it is impossible for ordinary people to start a private enterprise even if they have capital and technology.

Although Duan Yun has classmates working in the municipal government and has a good relationship with Director Ruiyang, this does not necessarily mean that his factory can be run, which involves many problems, on the one hand, it is necessary to have a deep relationship with the municipal government, and on the other hand, it is the main product research and development after the establishment of the electronics factory.

In terms of personal relationships, you can only take your time, Duan Yun now gets along very well with several classmates from the city government in their class, and he is very "helpful" in the class on weekdays In addition, when the students went out to play on Sunday, Duan Yun also behaved very actively, eating and drinking, good cigarettes and good wine were all paid by Duan Yun out of his own pocket, at first these students were a little reluctant to go, but after a long time, they became accustomed to it, and these are the favors they owe Duan Yun.

Duan Yun definitely doesn't need them to repay this favor now, but once he pays it back, it will be a big return, and Duan Yun's current identity is not what it used to be, and these classmates of his will definitely have a place to use him in the future.