After determining the car gearbox to be imitated, Duan Yun immediately asked the technicians in the factory to copy the relevant drawings, and drew four copies at the same time, one was left in the factory information department, and if I threw it to the ground, one was placed in Duan Yun's office, and the other two copies were left in the workshop and Duan Yun used by himself.

The gearbox of Lada is already a very mature product, with stable performance, fuel economy and relatively low cost.

However, in Duan Yun's opinion, there is still room for improvement in the automatic transmission.

In terms of gear transmission, Duan Yun did not dare to change it easily, because even any small change to the gear may have a significant impact on the performance of the entire gearbox, and even need to be completely overturned and redesigned, so in this regard, Duan Yun is ready to fully adopt the information on the original design drawings.

The so-called small changes are some additions to the appearance and functionality of this car gearbox.

The only way to judge whether there is a suitable flow rate for this kind of Lada gearbox is to unscrew the filler plug and then stick his finger in, Duan Yun decided to treat the drain plug as a visual mirror, so that anyone who has seen the equipment can easily notice whether there is a problem of insufficient oil, which is very convenient.

In addition, Duan Yun should use the best new steel in China in terms of wheel processing, and at the same time prepare to improve the heat treatment process, so that the hardness and durability of the gearbox gear and other parameters can reach a new level.

The so-called new heat treatment process is actually Duan Yunxiang designed and transformed a carburizing furnace to treat the surface of gear workpieces.

The so-called carburizing process is a kind of metal surface treatment, the workpiece using carburizing is mostly low carbon steel or low alloy steel, the specific method is to place the workpiece in an active carburizing medium and heat it to 900~The unidirectional Olympiad body zone of 950 degrees Celsius, after heat preservation for a sufficient time, the activated carbon atoms decomposed in the Christmas ring penetrate into the surface of the steel, so as to obtain high carbon on the surface, and the original composition is still maintained inside, which can be greatly improved if the surface layer of the workpiece has high hardness and wear resistance, and the middle part of the bow and arrow still maintains the toughness and plasticity of low-carbon steel.

At present, the domestic carburizing furnace is still at a very low level, and there are old manhole cover furnaces produced by domestic manufacturers before, which have a certain carburizing function, but can not accurately control the carbon content, nor can the carburizing products have better permeation uniformity and surface quality. The cost consumption is also relatively large, so few manufacturers use it in China, and the technology is relatively immature.

Even if it is the Red Star Gear General Factory, the heat treatment process he uses is still the technical process of the Soviet Union's aid, but it only relies on physical heat treatment, and there is no carburizing step.

When Duan Yun was a technician in the automobile factory in his previous life, there were two carburizing furnaces in the factory, and Duan Yun had memories of the relevant structural principles and technical drawings, but the two heat treatment furnaces in the factory could not be transformed into carburizing furnaces, and Duan Yun also needed to purchase furnaces similar to the pre-equipment for improvement.

In the past, the factory had no money and could not afford to buy new equipment, but now with the support of Ruiyang and the Municipal Bureau, Duan Yun also has the basis to realize his plan.

In the early stage, Ruiyang solicited Duan Yun's opinion on the equipment applied for by the provincial bureau, and asked Duan Yun to make a list to purchase new equipment nationwide.

Although it is still unknown whether the provincial bureau can approve it this week, Duan Yun will obviously not let go of this opportunity to make the factory grow.

Most of the list submitted to Ruiyang for the first time are the products of the eighteen Arhats in China, including the CA6140 lathe produced by Shenyang No. 1 Machine Tool Factory, which has advanced structure, reliable performance, stable quality and easy operation.

Nowadays, there are several such lathes in the head factory of Hongxing Gear Factory, compared with the CT8305 lathe currently used by the large collective, the processing speed and accuracy have been greatly improved, and it is the best ordinary lathe in China.

The milling machine Duan Yun is a product of Beijing No. 1 Machine Tool Factory, including X62W universal milling machine, and the XKD2012 model three-coordinate CNC gantry mobile washing machine researched in the mid-to-late 70s.

The grinding machine uses the high-precision universal cylindrical grinder of Beijing Second Machine Tool Factory, which is a relatively advanced product in China and is also conducive to the modification of Duan Yun in the later stage.

In addition to various machine tools and equipment, the highlight of this introduction of equipment, Duan Yun put it on the preheating furnace.

Duan Yun needs a professional carburizing furnace, but at present, the relevant domestic technology has just begun, Duan Yun has little room for selection, and finally chooses the large-scale pit carburizing furnace produced by Danyang Industrial Furnace Factory, which is also the only manufacturer of carburizing furnace in China.

Duan Yun also saw this manufacturer's products from the newspaper internal information, but the internal reference is very simple, and there is not much introduction, in Duan Yun's opinion, this equipment should still be very primitive, the pit carburizing furnace originally belongs to the simplest design of a carburizing equipment, on energy consumption and carburizing effect, far less than the advanced vacuum carburizing furnace in later generations, if you want to achieve the ideal heat treatment effect, Duan Yun also needs to use the experience and technology of the previous life to modify this equipment to a certain extent.

How many people sat in the office for a whole day of research, and in the evening, they also brought the materials to their homes.

This plan to improve the gearbox of the new car made Duan Yun feel full of passion, looking at the drawings on the table, as if he had returned to the passionate time when he had just been reborn and developed antenna speakers and engaged in technological transformation in the factory.

In the final analysis, Duan Yun is still naturally keen on technology, he has always wanted to rely on the technology he had accumulated in his previous life, leave his own strong mark in this era, and at the same time harvest his own wealth and love.

There are no classes at the correspondence station tonight, and at this time of the day, Duan Yun and Cheng Qingyan will press the road or watch a movie.

But today, Duan Yun led Cheng Qingyan to the library of the Lighting Stadium where the two of them learned English before.

In the past, the two of them rarely talked about work when they were dating, but now they have a very tight time to develop a new product, so they have to sacrifice some personal time.

Having a girlfriend who is also obsessed with mechanical technology and has worked together has such a benefit, the two have common topics, and can understand each other's difficulties in work.

So Duan Yun didn't have to say much, and even coaxed Zeng Cheng Qingyan to become his assistant, helping to draw drawings, and at the same time studying the details of technical improvement.

Men and women match, work without getting tired.

Although Duan Yun is a master in technology, Cheng Qingyan has her own strengths, at least in terms of conference room drawings, she is much more careful and serious than Duan Yun, and she draws the drawings, which are exceptionally clean, and the fonts marked are also very neat and neat, which looks quite comfortable.

And Duan Yun's reward for Cheng Qingyan was to kiss his mouth that didn't shave his stubble......

Remember the mobile version URL: