Countercurrent 1982

Chapter 485 Equipment List
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 for the factory files, one for Duan Yun's office, and the other two The share is kept in the workshop and used by Duan Yun himself.

Lada's gearbox is already a very mature product, with stable performance, fuel-efficient and relatively low cost.

However, in Duan Yun's view, there is still room for improvement in automatic transmissions.

In terms of gear transmission, Duan Yun dare not change it lightly, because even a small change to the gear may have a major impact on the performance of the entire gearbox, and even require a complete overthrow and redesign, so in this respect Duan Yun is going to fully adopt the information on the original design drawings.

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

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

In addition, Duan Yun will use relatively new domestic steel materials for this round of processing, and at the same time prepare to improve the heat treatment process, so that the parameters such as the hardness and durability of the gearbox gears can reach a new level.

The so-called new heat treatment process is actually Duan Yun wanted to design and transform a carburizing furnace to carry out surface carburizing process on gear workpieces.

The so-called carburizing process is a kind of metal surface treatment. The workpieces used for carburizing are 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 900~950 degrees Celsius The one-way Austrian number body area, after a sufficient time of heat preservation, decomposes activated carbon atoms and infiltrates the surface of the steel part, thereby obtaining high carbon on the surface layer, and maintaining the original composition inside. This is if the surface layer of the workpiece has high hardness and wear resistance, and the bow and arrow The middle part still maintains the toughness and plasticity of low carbon steel, which can be greatly improved.

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

Even for the Hongxing Gear General Factory, the heat treatment process he used was still the technical process when the Soviet Union aided the construction. It just relied on physical heat treatment without carburizing steps.

When Duan Yun worked as a technician in an automobile factory in his previous life, there were two carburizing furnaces in the factory. Duan Yun has memories of the relevant structural principles and technical drawings and materials, but the two heat treatment furnaces in the factory cannot be transformed into For the carburizing furnace, Duan Yun also needs to purchase a furnace similar to the front-end equipment for improvement.

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

In the early stage, Ruiyang asked Duan Yun for his opinion on the equipment he applied to 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 obviously will not let go of this opportunity to make the factory grow.

Most of the list submitted to Ruiyang for the first time are domestic Eighteen Arhats products, including the CA1 lathe produced by Shenyang No. 6140 Machine Tool Factory. This product has advanced structure, reliable performance, stable quality, and easy operation. It is also included in teaching materials as a typical machine tool by colleges and universities.

Now there are several such lathes in the general factory of Hongxing Gear Factory. Compared with the CT8305 lathe currently used by the large group, the processing speed and accuracy have been greatly improved. It is the best ordinary lathe in China. up.

Milling machine duanyun selection is a product of BJ No. 62 Machine Tool Factory, including the X70W universal milling machine, and the XKD2012 three-coordinate CNC gantry mobile washing machine developed in the mid-to-late [-]s.

The grinding machine used is a high-precision universal cylindrical grinding machine from BJ No. [-] Machine Tool Factory. This kind of grinding machine is considered a relatively advanced product in China, and it is also conducive to Duan Yun's later modification.

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

Duan Yun needs a professional carburizing furnace, but the relevant domestic technology has just started, and Duan Yun has little room to choose. The final choice is the large well-type carburizing furnace produced by Danyang Industrial Furnace Factory. At present, it is the only manufacturer in China that produces carburizing furnaces.

Duan Yun also saw the products of this manufacturer from the internal publications of newspapers, but the internal references were very simple and there was not much introduction. In Duan Yun's opinion, this kind of equipment should still be very primitive. The carbon furnace is originally a carburizing equipment with the simplest design. In terms of energy consumption and carburizing effect, it is far inferior to the advanced vacuum carburizing furnace of later generations. If you want to achieve the ideal heat treatment effect, Duan Yun still needs to use the experience of his previous life Technology has modified this equipment to a certain extent.

How many people sat in the office and studied for a whole day, and at night, they brought the materials home.

The plan to improve the gearbox of the new car in the past made Duan Yun feel full of passion. Looking at the blueprints on the table, he seemed to have returned to the passionate time when he was just reborn when he was developing antenna speakers and doing technical reforms in the factory.

After all, Duan Yun is still naturally keen on technology. He has always wanted to rely on the technology accumulated by his own hard work in his previous life, to leave his own imprint in this era, and to reap his own wealth and love at the same time.

There is no class at the correspondence station tonight, normally at this time, Duan Yun and Cheng Qingyan would walk on the road or watch a movie.

But today, Duan Yun led Cheng Qingyan to the Library of the Light Stadium where the two of them had learned English before.

In the past, the two rarely talked about work when they were dating, but now it is different. The task of developing new products is very urgent, so I have to sacrifice some personal time.

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

So Duan Yun didn't waste much time, and even coaxed and tricked Zeng Cheng Qingyan into his assistant to help draw the blueprints, and at the same time, he also studied the details of technical improvement together.

Men and women match, work is not tired.

Although Duan Yun is a master in technology, Cheng Qingyan has her own strengths. At least when it comes to meeting room drawings, she is much more careful than Duan Yun. The drawings are extraordinarily clean, and the fonts are also very delicate. Neat, looks quite comfortable.

Duan Yun's reward for Cheng Qingyan was to kiss her unshaven mouth...

(End of this chapter)