The rejuvenation of a great nation: from educated youth to national treasure scientist

Chapter 27 Workshop installation and commissioning successful [2nd update, please collect and read]

This year, the wheat harvest season in rural areas outside Beijing was particularly short.

Generally speaking, in this era, it would take at least half a month or 20 days to complete the wheat harvest.

But this year, the wheat had been harvested, threshed and stored in the brigade's granary in less than ten days.

Among them, the two wheat harvesters developed by Wang Haoran played a major role.

Time flies, and in a blink of an eye it was early June 1977.

The new factory building of Mafang Machinery Factory has finally been completed.

In order to build this large factory building, construction teams from the entire Pingu County were mobilized.

After nearly three months of intensive construction, this large factory building with a high-standard design and an area of ​​more than 3 square meters was completed ahead of schedule.

The reason why the factory building is so large is to accommodate all the production lines for manufacturing motorized tricycles.

In addition to casting, there are also stamping, welding, electrophoresis, painting, chassis, assembly and other production lines, which must also be assembled in one workshop.

After all, before the product has been tested by the market, there is not enough money invested to build separate workshops for each production link.

The only option is to combine all the production lines together.

All of the above production lines were designed and developed by Wang Haoran and his team.

After the new factory was opened and cleaned, Wang Haoran led a group of technical elites from Mafang Machinery Factory to install a series of production equipment designed and manufactured by themselves in the factory.

In addition to casting equipment, Wang Haoran also designed complete heat treatment process equipment.

Heat treatment is the last process in casting production. After heat treatment, the original internal structure of the casting can be changed, its internal stress can be eliminated, the performance of the casting can be guaranteed, and deformation of the casting can be prevented.

Therefore, heat treatment process is very important.

While developing this casting equipment, Wang Haoran felt more and more the importance of chips.

If there are advanced chips, then CNC programs can be designed to increase the automation functions of the equipment.

This not only improves production efficiency, but also increases the safety factor of the foundry.

The foundry is quite dangerous because it has to deal with molten metal.

Its main security risks are as follows:
The first is the hidden danger of equipment safety.

There are many kinds of equipment in the foundry, such as melting furnaces, molding machines, pouring machines, cleaning equipment, etc. These equipment require meticulous maintenance and standardized operation.

If the maintenance is improper or the operation is not standardized, failure or even a major accident is very likely to occur.

For example, if the lining of a smelting furnace is severely worn, it is likely to cause the furnace to collapse and cause molten metal to leak.

For example, if the pressure head of the molding machine descends too quickly or is not positioned accurately, it is very likely that the mold will be damaged or even the worker will be injured.

The second safety hazard comes from the process.

There are many steps in the casting process, the most important of which include: melting, molding, pouring, cleaning, etc. Each process has strict safety requirements. If the operation is not carried out in accordance with the prescribed process parameters and operating procedures, it is easy to cause an accident.

Here is an example: during the casting process, if the molten iron temperature is too high or the pouring speed is too fast, it is likely to cause pores or cracks in the casting.

In addition, during the cleaning process, if the sand and metal burrs on the castings are not removed completely, they may injure the workers' hands or eyes.

The third safety hazard in the foundry is the poor environmental safety.

The working environment in the foundry is very poor, with noise, dust, harmful gases and other pollution. These pollutions not only affect the health of workers, but may also cause fires and explosions.

For example, if the dust in the workshop is too high, it is easy to explode once it encounters open flames or electric sparks; and if the harmful gas in the workshop exceeds the standard, it will cause workers to be poisoned or suffocated. Because of the above hidden dangers, casting is a very difficult job and is very harmful to the human body.

While designing the casting equipment, Wang Haoran also designed noise reduction, sound insulation, dust removal and ventilation equipment for the casting workshop.

In addition, he also formulated strict process operating procedures, safety management systems and various emergency plans.

In fact, Wang Haoran originally wanted to make use of the current domestic electronic development technology to design more automated operation processes.

However, although the development of integrated circuit technology in China is not too backward, there are too many places that need advanced chips. Therefore, it is still difficult for him to apply for a commune-run collective enterprise like Mafang Machinery Factory.

There is no other way, so we can only try our best to design the process flow to be more compact and reasonable, and strengthen the training and management of workers.

After more than half a month of installation and debugging, the foundry was finally completed.

At this time, it was already the end of August.

Now, we can start preparing for trial production of single-cylinder diesel engines.

After investing so much money, time, manpower and material resources, now is the time to test the results.

As the director of Mafang Machinery Factory, Dai Hongtao was a little nervous.

"Haoran, tell me, we've made such a big fuss, what should we do if we can't produce a single-cylinder diesel engine?"

Wang Haoran smiled and said: "As long as there is no problem with the equipment, there is no possibility that we cannot produce single-cylinder diesel engines."

"The equipment has been debugged and it's September soon. I think we should hurry up and start trial production! We should try to manufacture our motorized tricycles before the Republic Day celebrations. It can be considered a gift to the country, right?"

Dai Hongtao wiped the sweat from his forehead and said, "Then let's start the trial production."

"Comrade Mingshan said at the beginning that we should inform him when we have any results!"

"So when should we call him?"

Wang Haoran said: "It won't be too late to call him after we successfully assemble the first motorized tricycle."

Dai Hongtao nodded and said, "Then let's do as you say."

On the morning of that day, Wang Haoran personally directed the work and began cutting and casting various accessories.

In addition to castings, there are also many parts such as frames that need to be manufactured using machining equipment.

However, the manufacturing requirements for motorized tricycles are far less demanding than those for cars, and the processes required are fewer and simpler.

We were busy until after 11 o'clock in the morning, and finally all the parts of the motorized tricycle were assembled.

Of course, Mafang Machinery Factory cannot produce tires on its own for the time being.

The tires are provided by the municipal tire factory.

After all the parts were processed, Wang Haoran was about to lead his men to start assembly and proceed to the next process when a subordinate of Wang Mingshan, the head of the First Machinery Department, called and said that Wang Mingshan was going to come to the factory in the afternoon to check on the progress of the work.

Wang Mingshan heard that the production line of Mafang Machinery Factory had been installed and debugged, so he wanted to come and see what the effect was.

If the leader is coming, then of course you cannot refuse, you can only express your welcome.

After receiving the call, Dai Hongtao hurried to the workshop to discuss with Wang Haoran.

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(End of this chapter)