Countercurrent 1982

Chapter 489

In Duan Yun's view, the strength and hardness of the gears processed by the current heat treatment process in the factory can't reach the technological level of the Lada car gearbox. On the other hand, the steel material used is the same as the gears of the original Lada car gearbox There is a difference in material.

Although Duan Yun is a bit disappointed, the matter is not unsolvable, it just needs to wait. On the one hand, he needs to find better raw materials for gear steel. Furnace equipment in place.

Judging from the current drawings and materials Duan Yun has, the steel used in Lada’s gearbox is 40 CrNi, which is an alloy quenched and tempered steel with better performance and more economical performance. Compared with the No. 45 currently used in Duan Yun’s factory Steel has better performance parameters in all aspects.

However, finding new raw steel is not an easy task. Although there were many domestic steelmaking enterprises in the 80s, their technological level was very limited. Most of them could only produce ordinary carbon steel, such as some special steel used in Lada gearboxes. Domestic manufacturers are difficult to produce.

In addition, even if Duan Yun brings the product formula to steel manufacturers to seek cooperation, he may not be able to buy steel products. On the one hand, domestic steel products are in short supply. On the other hand, if the order for training is small, generally small steel factories do not have relevant processing. technology, and large steel mills will not allocate production capacity for such small orders of products.

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 BJ, and Wuhan Iron and Steel in Hubei. The others are in the second echelon and below the third and fourth echelons , such as Taiyuan Iron and Steel, Maanshan Iron and Steel, Benxi Iron and Steel, Tangshan Iron and Steel, and Panzhihua Iron and Steel.

In Duan Yun's view, the four major domestic steel mills have sufficient orders, and they supply goods strictly according to the plan. It is impossible to supply goods to small factories like their labor service companies. There is still hope for several steel mills in China.

Especially the Taiyuan Iron and Steel Works, after all, is an enterprise in this province, and if Ruiyang is asked to help, maybe it can really help produce this special steel, but this is not sure, after all, Ruiyang is just a city. As the director of the bureau, enterprises in provincial capital cities cannot get their hands on it.

But no matter what, Duan Yun must discuss this matter with Ruiyang. If Taiyuan Iron and Steel Works can really solve the production of this special steel, then Duan Yun's imitation of the Lada gearbox has already been half successful.

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

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

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

Throughout June, Duan Yun and his two apprentices repeatedly drove and tested new samples. During this period, 6 gearbox samples were discarded, but a lot of fault technical parameters were obtained from them. For the jump gear found in the gearbox, Disordered gears, difficulty in shifting, and other problems caused by it, and the research team repeatedly studied, and found reasonable improvement measures based on various gear wear, thermal deformation, and meshing abnormalities.

For some gears with heavy wear, Duan Yun must strengthen heat treatment to improve surface hardness and wear resistance. For performance purposes, each gear has a corresponding processing technology.

The technology is all burned out with money. Fortunately, the cost Duan Yun paid is not too much. There are no advanced testing instruments and experimental workshops. The collection of any parameter data of new products depends on workers repeatedly testing, dismantling, analyzing and inspecting. The second-hand 212 Jeep bought from the Daxing Automobile Factory was more durable than he expected. Although the noise is relatively loud, at least it has not slumped, which made Duan Yun feel very relieved.

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

According to the blueprint design, this project consists of two workshops, one large and one small.

At present, the foundations of the two factory buildings have been completed, the eight corbels of the main factory building have also been grouted, and the workers are building the walls on all sides.

In addition, the small factory building not far from the main factory building is currently under construction. Compared with the main factory building, the construction of the small factory building is relatively low and simple, and it is impossible to put too much heavy equipment in it, but Duan Yun has other uses.

In fact, Duan Yun built this small workshop not for processing gear transmission equipment, but for other purposes.

He has been thinking about opening an electronics factory in the future, and relying on the factory building of the leased labor service company, and this small factory building will be transformed into the workshop of the electronics factory by Duan Yun in the future.

Duan Yun has always had such a plan, but it’s just that he hasn’t been here for a long time, and there are many things to solve, so he has no time to take care of the establishment of the factory. After the new product is developed, he can free up his hands to deal with these things up.

Another very important point is that Duan Yun needs to solve a lot of things if he wants to set up a private electronics factory. There are many local self-employed people in Daxing these days, but private enterprises are rare. Those who can set up factories in Daxing are very well-connected people. Even if ordinary people have capital and technology, it is impossible to start a private enterprise.

Although Duan Yun has classmates who work in the municipal government and has a good relationship with Director Ruiyang, this does not necessarily mean that his factory can be established. There are many problems involved. On the one hand, he needs to have a deep network in the municipal government On the other hand, it is the main product research and development after the establishment of the electronics factory.

In terms of personal connections, we can only take it slowly. Duan Yun is getting along very well with the students in his class from the municipal government. Duan Yun is usually very "helpful" in the class. Whenever the students need to take pictures and use the car In other places, Duan Yun must be responsive. In addition, when the students went out to play on Sundays, Duan Yun was also very active. After growing up, they will get used to it, and these are all the favors they owe Duan Yun.

Duan Yun definitely doesn't need them to repay the favor now, but once he repays it, it will be a great repayment. Besides, Duan Yun's current status is not what it used to be, and his classmates will definitely need him in the future.

(End of this chapter)