"Let's go to the Friendship Mall." After getting off work this day, Jiang Sirui just got in the car, and Jiang Yan proposed.

The summer in Sijiu City is really difficult, Jiang Yan has been hiding in his own space for the past few days, or getting a little ice from the space and putting it in his room.

It's okay to say that I'm a man this summer, but it's extremely unfriendly to girls.

Feeling his carelessness, Jiang Yan thought about starting to remedy it, air conditioning or something, you don't have to think about it.

China's first air conditioner was born in 1954, which is a milestone in the air conditioning industry. At that time, after years of hard research and development, engineers in China successfully manufactured the first air conditioning equipment.

The first air conditioner in China uses mechanical air conditioning technology. Mechanical air conditioning uses mechanical equipment to cool and circulate air, including key components such as compressors, condensers, and evaporators. This air conditioning technology was very advanced at the time.

However, this air conditioner is mainly used in large public places, such as government agencies, large enterprises and institutions, etc. As for appearing in the homes of ordinary people, it is estimated that it will have to wait until the reform and opening up.

That can only be the next best thing to get an electric fan, the key is that this electric fan is also a rarity in this era.

Jiang Yan had asked his director to see if he could get a ticket for an electric fan, and only after getting a negative result did he think about whether there was anything in this friendship store.

But even if there is an electric fan, Jiang Yan will not buy it if he has no way.

What do you say about the electric fans produced in this era! The quality is pretty good, and the key to the style is that it's pretty heavy, almost entirely made of steel.

Jiang Yan remembered that in his previous life, there was a brick and stone brand electric fan produced by his father in the seventies, which was bigger than himself that year, and the key was that this thing was still playing a role in the time he had traveled, and the quality was quite good.

This fan is too heavy and not conducive to handling, especially when Jiang Sirui uses it alone.

Jiang Yan thought about it, if he didn't have a fancy in this friendship store, he wouldn't mind making one.

Thinking of making an electric fan, Jiang Yan's eyes lit up, and he couldn't help but pat his thigh.

"That's right! You can make it yourself! The technology content of this thing is not high, if you make this fan, which has a novel appearance, you may be able to go to the Canton Fair to exchange money! ”

went back to the courtyard to pick up He Yushui, who had already gotten out of school, and promised her to go to the Friendship Store to take her, but it was better to hit the day than to hit the day, and Jiang Sirui agreed, so he went back to take her, and only after taking He Yushui did the car drive to the Friendship Store.

Sijiu City's Friendship Store is located along East Chang'an Avenue, located in the bustling Jianguomenwai Street, adjacent to the embassy district and the CBD central business district.

At the door of the Friendship Store, Jiang Yan showed his ID, and when he saw his ID, Jiang Yan and the three of them were put in.

After entering, I felt that this place is really big!

Steel Jiang Yan read the introduction of the friendship store at the door and knew that the friendship store in Sijiu City has four floors, with a business area of more than 9,000 square meters, and the environment inside is spacious, bright, comfortable and elegant.

Jiang Yan is okay, it is not surprising that he has been to such a high-end place in the future, but where have Jiang Sirui and He Yushui seen such a clean and bright floor, they can only stand at the door in a daze, not daring to go inside.

"Let's go! What are you doing in a daze! Jiang Yan pulled the two of them, and the two of them came back to their senses and followed Jiang Yan inside, but although the two of them came in, they still followed Jiang Yan tightly and did not leave an inch.

"Brother Jiang Yan, I heard that you need a foreign exchange coupon to buy things here." After coming in, Jiang Sirui whispered.

"Yes, with it! You can buy it with confidence! Jiang Yan patted his pocket with a relaxed expression.

In addition to the foreign exchange voucher of 1,000 yuan rewarded by the superior before, there is still 600 yuan left, which is equivalent to the salary of an ordinary worker for two years, as long as you don't buy large things, it is enough.

Jiang Yan took three people to take a turn on the first floor, this time Jiang Yan came to the eye, the friendship store is mainly engaged in jewelry, diamonds, gold and silver jewelry, jade carving, cloisonne, carved lacquer products, fine porcelain, classical furniture, four treasures of the study, antique calligraphy and painting, yarn embroidery, blankets and silk carpets and other traditional Chinese handicrafts.

Jiang Yan stopped in front of a shop selling jadeite, picked up a green and transparent jadeite bracelet and looked at it.

He just didn't understand, just look at the green and know that the value of this jade bracelet is small, and it will not be a million in the future.

At a glance at the quotation of the bracelet, Jiang Yan almost scolded.

Such a good pair of bracelets only costs one hundred and twenty dollars in foreign exchange rolls, you can believe it.

And the milky white next to them looks like jade bracelets and pendants made of good jade, the most expensive of these are only fifty or sixty yuan, those small pendants are cheaper, and a set of zodiac signs carved from jade is only sixty yuan.

Jiang Yan quickly calculated in his heart, since this thing is in front of his eyes, he is sorry for himself.

Under the stunned eyes of the salesman, Jiang Yan bought two pairs of emerald green jade bracelets, a set of zodiac pendants, some jade bracelets and some gadgets, which almost cost him almost three hundred yuan.

The man with Guanyin and the woman with the Buddha, Jiang Yan handed two identical ice jade Maitreya Buddhas to He Yushui and Jiang Sirui.

"These two, one by one, put them away carefully, don't let others know, maybe it will be of great use in the future."

The two of them are a little unclear about Jiang Yan's words without a head or tail, but girls like these shiny things, and soon the two of them left Jiang Yan's words behind them, and discussed where to hold the two jade pendants.

The second floor basically sells clothes and food produced by those more famous manufacturers in China.

These things are basically all kinds of fashionable "top goods" that cannot be seen on the market, and many goods belonged to "special supplies" at that time: canned food and White Rabbit toffee from Shanghai Meilin, West Point from Tianjin Qishilin, Bulao Forest from Shengjing, double-sided embroidery from Suzhou, brocade from Hangzhou, cashmere sweater from BJ Snow Lotus and other things.

Seeing these snacks, the two ladies couldn't walk, one person held it with one hand, and looked at Jiang Yan with two pairs of big eyes blinking.

It turns out that every woman is a foodie at heart, which is a bit true.

Jiang Yan, who was not bad for money, waved his hand, "Buy." As soon as Jiang Yan's words fell, the two of them cheered, and each rushed to what they liked.

The snacks on the second floor were bought for about fifty yuan, and there were so many big things that Jiang Yan and the three of them occupied their hands, and there was no way, Jiang Yan could only go out and put things in the trunk of the car.

The third floor is basically full of foreign food and clothes, and here Jiang Yan saw Coca-Cola, chocolate, whiskey, Marlboro cigarettes, and other things.

However, this Coca-Cola is really expensive, a bottle of foreign exchange rolls that cost three yuan, you must know that now the RMB is 2.6 to 1 against the US dollar, and the foreign exchange rolls and the RMB are one to one, which is converted to about one dollar for each bottle of Coke.

In the eagle sauce of the sixties, this bottle of Coke was only about ten cents.

However, these Jiang Yan still bought twenty bottles with a wave of his hand, and also bought some imported snacks, candies and chocolates.

Fans and electrical appliances are on the fourth floor, and directly opposite the staircase is the place where TV is sold, Jiang Yan went up curiously to take a look, this Toshiba TV of the foot basin chicken actually asked for 800 foreign exchange coupons, which couldn't help but make Jiang Yan a little embarrassed.

But now it's basically useless to sell this TV, and there are few TV stations in the country, which is completely an ornament.

There are a few electric fans in this one, and Jiang Yan picked and picked an electric fan from Siemens in Hans Country, but in Jiang Yan's eyes, this fan with a rather simple appearance asked Jiang Yan for more than 130 yuan in foreign exchange coupons.

After this whole article, Jiang Yan had less than 100 yuan left in the 600 yuan foreign exchange coupon in his hand, but looking at the satisfied appearance of the two people, Jiang Yan felt that the money was worth it. Especially Jiang Sirui knew that this electric fan was for her, and her eyes were almost melting when she looked at Jiang Yan.

"Here's for grandma!" Jiang Sirui was overjoyed and looked at the fan and hesitated.

"It's okay, you can use it! I bought one for my grandmother before. ”

After knowing that Jiang Yan's grandmother had it, Jiang Sirui happily accepted the electric fan that Jiang Yan bought for him.

"Director, there is a project to make money, you can't do it." Go to work the next day. Jiang Yan came directly to the director's office.

"What a project." When I heard that there was a new project, the director who was working put down what he was doing.

After the two alloys invented by Jiang Yan were taken away from above, this hair was not left for the institute, the director naturally had grievances, the current CNC machine tool progress is slow, and the investment is huge, now there is only a job to process the chassis of the engine, which is a bit of a way to make ends meet for a long time, even if Jiang Yan does not come to him today, the director will decide to have a good chat with Jiang Yan, and see if he can get a project that makes more money to subsidize the institute.

Na Cheng thought that he was dozing off and came to the pillow, so he heard that there was a new project and came to the spirit.

Jiang Yan took out a stack of paper from a handbag he carried with him under the director's inquiry, handed it to Wang Honghai, and said: "Yesterday I took my girlfriend to buy an electric fan, and found that the electric fan on the market is too single. ”

"Hmm!" Wang Honghai, who heard Jiang Yan's words, was shocked in his heart, he hadn't seen the electric fan, and there were many foreign manufacturers who produced electric fans, so he went to compete with them, is this reliable? But no matter whether it is reliable or not, this spirit is quite commendable.

Wang Honghai took the stack of papers in his mind full of doubts, unfolded it and looked at it, and the wind blades of an electric fan were drawn on it. Look carefully, this electric fan is different from the common electric fan on the market, the electric fan on the market is generally three pages, Jiang Yan The leaves of this electric fan on this drawing are five, and the shape is slightly different, but this style looks quite novel, Wang Honghai also noticed that next to the blade, the relevant shape parameters are written,

"Why is this electric fan five blades, is it wrong?" Wang Honghai pointed to the electric fan on the drawing and asked Jiang Yan.

Jiang Yan said: "This is a design of an electric fan that I figured out. The wind blown by the traditional three-bladed electric fan is relatively hard, and after blowing for a long time, people will feel uncomfortable. The wind blown out by this five-blade electric fan I designed is much softer and has the effect of a natural cool breeze. ”

"Director, you see, here I have also added three grades, the latter three are three modes, so that they can be adjusted as needed." Jiang Yan pointed to the drawings and explained to Wang Honghai.

Hearing Jiang Yan's explanation, Wang Honghai was stunned: "How do you know that the wind blowing from your five-blade electric fan will be softer?" ”

Jiang Yan smiled slightly: "This is the result of my calculations." Jiang Yan thought for a while and said: "There is a special formula for calculating this, electric fan, as long as I know the wind direction and wind speed, I can calculate its wind force." ”

"I designed this, the curve of the leaf is precisely calculated. The wind blown out of this kind of good karma is softer than ordinary wind blades, after calculation, in the case of the same wind direction and wind speed, his wind power is much smaller, I also redesigned the engine of this electric fan, such an engine is smaller in size, quieter than the engine on the market now, and the most important thing is that it is also more power-saving. ”

Wang Honghai laughed: "Yo! With so many benefits, it seems that this thing is very interesting. Can this thing be produced at our current production capacity? Do you need to apply to your superiors to build a factory, in that case, it is estimated that someone will pick peaches, and we will drink a little soup and water. ”

Hearing the director's words of a little frustration, Jiang Yan said: "I don't feel needed, to put it bluntly, the technical content in this thing is not high, as long as someone who understands some principles buys it back and disassembles it, they will understand how to make it, and it is completely unnecessary to build a factory." ’

"Director, you see, the processing requirements of this motor and fan blade are relatively high, we can use our own workshop to produce, such as this base and other things we can completely contract out, by other factories to manufacture, we just need to strictly control the quality of it, and finally by our unified assembly and sales."

"Well, this method is good, that is, it saves production efficiency and creates value for brother units, I think this thing is okay, we have a meeting in the afternoon, let's discuss it specifically, but there are any difficulties in this production process."

Hearing the director's question, Jiang Yan thought for a while, then pointed to the drawings and said: "This mold tool for manufacturing this blade needs a section machine, I have no way in this regard, and I may need the factory director to coordinate." ”

"It's not a problem, I have a good relationship with Lao Yan, they have special production equipment for the Navy, and there are large free section machines, I'll contact him these days to see when I have time and ask him to do a favor."

"The factory director, how many tons of section machines do they have?" Jiang Yan asked casually.

"Lao Yan's forging machine, the pressure is 1,000 tons, it is the equipment aided by the woolly bear before, let me tell you where they are quite nervous, not acquaintances can't use it at all."

"1000 tons?" Jiang Yan muttered a little, and Jiang Yan didn't listen to the director's words at all.

Seeing Jiang Yan's face change, Wang Honghai said, "Why is there too much pressure." ”

Hearing the director's words, Jiang Yan couldn't cry or laugh a little, this is a big deal, this point is not good enough at all.

Jiang Yan thought for a while and said: "The pressure is not enough, I have calculated, our mold needs at least 2,000 tons of forging machine to forge, if you can use a 10,000-ton machine to come up, then it will be more enjoyable." ”

"What's the matter, these 1,000 tons are not enough," Wang Honghai asked Jiang Yan with some confusion.

"Not enough," Jiang Yan nodded seriously.

"Director, you see that after the fan changes from three blades to five blades, the blades become narrower, and to achieve the same strength, the steel plate is required to be thicker. In addition, the leaf shape I designed was more complex than the original, and it was calculated that it could not be formed by stamping with a pressure of 50 tons, and it had to be driven to a pressure of 200 tons. ”

"And the mold for ordinary fan blades is made of cast iron, which is not a big problem at 50 tons of pressure. But now after driving to 200 tons of pressure, the mold will be unbearable, Seiko my calculations, such a mold punches one or two hundred blades, and the mold will be damaged. I made a preliminary calculation, if the punch pressure is 200 tons, how can the pressure of the forging die get 2000 tons, so that the mold can not be deformed under high pressure. ”

"Oh, so that's the case," Hearing Jiang Yan's explanation, Director Wang nodded.

Wang Honghai said: "Lao Yan has a 2,000-ton die forging machine, but now there are more tasks, almost all of them are at full capacity, and it is impossible to use the machine for you to use." ”

After saying this, the director thought about it again, and then said: "The largest section machine in our country is a 5,000-ton forging machine made in the Czech Republic, which is currently in Jiangnan Shipyard, but that thing is usually not your turn at all." ”

Hearing Wang Honghai say this, Jiang Yan reacted, at that time, only a few countries in the world had a 10,000-ton hydraulic press, and only the first heavy machinery factory in China had a 6,000-ton hydraulic press, which was the latest and heaviest machine in China.

That is, on February 14 this year, China held a groundbreaking ceremony for 10,000 tons of hydraulic press in Jiangnan Shipyard, and an unprecedented industrial conference battle kicked off, and the large parts of 10,000 tons of hydraulic press need to be made of extra-large forgings and cast steel. But at that time, there was no such large steel in China, so many castings and steel plates could only be welded together by the method of assembly.

In May 1962, China's first 10,000-ton hydraulic press was successfully manufactured, but now it is only 60 years, where is the 10,000-ton hydraulic press used, thinking of this, Jiang Yan's head began to hurt, and the cost of self-design if there is no such mold has increased a lot.

Thinking of this, Jiang Yan was a little reluctant to say to Wang Honghai: "Director, you just think of a way, we don't take long, just process a few molds, I'll tell you that our project is absolutely good." ”

Hearing Jiang Yan's words, Wang Honghai thought about it and said to Jiang Yan: "In this way, after the meeting in the afternoon, I will think of a way, if it doesn't work, I'll ask the old leader to see if he has a quick way for me, if not, you see if you can change the design plan and see if you can use a 1000-ton section machine." ”

"If you use this level, see how much the cost can increase."

Hearing what the director said, Jiang Yan could only agree, if not, it seemed that he would have to redesign a new plan.

(End of chapter)