Zhao Changfeng didn't let Duan Yun wait too long, and it only took three days to return from Beijing.

After getting off the train at 10 o'clock in the morning, Zhao Changfeng didn't care about the fatigue of the journey, so he took the bus back to the factory directly.

Duan Yun was directing the workers to modify the equipment in the workshop at that time, and after seeing Zhao Changfeng coming over, he was stunned for a moment, and then led him to his office.

"It's hard work, just got off the train, right? Seeing that Zhao Changfeng's eyes were a little dark, Duan Yun was slightly moved, and said to him with a smile.

"It's okay, I'm used to it. Zhao Changfeng didn't sit down, but took out a manual from his purse, put it on Duan Yun's desk, and said, "Manager Duan, this is the computer you want to buy, right?"

"That's right, that's what I'm talking about. Duan Yun picked up the manual on the table, glanced at it, and suddenly his eyes lit up, and he said to Zhao Changfeng in a continuous voice: "You found a place to sell computers so quickly, where is it, and what is the price?"

What Zhao Changfeng put on the table was the manual of an IBM computer imported from the United States, and it was this kind of computer that Duan Yun wanted to buy.

"I saw this computer in the electrical hall of the Beijing Department Store, and the price was 32,000 yuan, but it was ......," Zhao Changfeng said with a slight frown.

"But what?"

"I asked the counter attendants, and they said that this kind of computer is not sold to individuals, and if you want to buy this computer, you need a letter of introduction, and it can only be reserved for research institutes at or above the national municipal level, bureau and department level units, and large state-owned enterprises. Zhao Changfeng paused, and then said: "I told you about the situation of our factory, and the other party said that a large factory-run collective like ours is not qualified to buy computer products. ”

"Bureau-level units?" Duan Yun also frowned when he heard this.

In fact, Duan Yun had already expected that it would be impossible for computers to be sold to individuals, but he did not expect that the threshold for buying computers was so high, and it was necessary for bureau-level and department-level units to buy them, which obviously completely cut off Duan Yun's channel for buying computers in Beijing.

"Yes, people say that there must be a letter of introduction from the unit, and you can't buy it if you have money, and I also went to the friendship store in Beijing as you said, where you can buy me a computer privately, but where do we go to get so many foreign exchange coupons?" Zhao Changfeng said helplessly.

"Hmm. Duan Yun nodded, and said to Zhao Changfeng after a while: "Okay, this matter is like this, you have worked hard for the past two days, I will give you a day off tomorrow, you have a good rest at home, you can go back now" Duan Yun signaled that Zhao Changfeng could leave.

"Manager Duan, if it really doesn't work, I'll go to Shanghai and Guangzhou to show you, the economy is developed there, and the governance is not as strict as Beijing, maybe you can find other channels to buy computers......" Zhao Changfeng was just about to leave, and seemed to think of something again, and then said to Duan Yun.

"Are you addicted to business trips? Haha, just kidding, I know you're tired running back and forth. Duan Yun smiled when he heard this, and then said to him: "Okay, you don't have to worry about this matter, you go back and rest for a day first, and I have other tasks to arrange for you later." ”

Duan Yun also thought that Shanghai, Guangzhou, or some cities in the south should have channels where they could buy computers privately, but Duan Yun did not plan to arrange for Chen Changfeng to do these things.

At the beginning of reform and opening up, many people in some coastal cities were engaged in smuggling business, especially in Xiamen, which is adjacent to Taiwan, and Guangzhou, Shenzhen, which is adjacent to Hong Kong.

However, Duan Yun didn't want Chen Changfeng to help him buy contraband, the main reason was that Chen Changfeng was a regular worker in their factory, and once he was caught buying smuggled goods, he would even be involved, so Duan Yun generally only let him engage in normal procurement and sales work in some units, and he would not let him do things that went off the rails.

Relatively speaking, Gao Lei is an unemployed young man, there is no problem in buying some contraband, even if he is caught, at most, he will be fined some money and detained for a few days, and it will not involve Duan Yun's labor service company, and Gao Lei is a tall man, and he can still deal with a robber road rage, Duan Yun asked him to buy smuggled goods, which is relatively much safer.

Everyone has their own strengths, Duan Yun wants to make the best use of his talents, it is really not suitable for Zhao Changfeng to find a smuggling company in the name of the head of the sales section, at least Duan Yun has not trusted him as much as Gao Lei now.

Duan Yun urgently needed a computer now, but now it seemed that he still needed to wait patiently for a while.

After a busy day in the factory during the day, when it was time to get off work, Duan Yun's No. 1 carburizing furnace modification was nearing completion, the periphery of the furnace body was welded with steel plates and the new lining material was thickened, the heating wire in the furnace and other CNC supporting equipment have been connected, and Duan Yun personally connected the CNC circuit board tomorrow, and then he could start the machine for testing.

At present, there are two new carburizing furnaces in the factory, one is being refitted, and the other has been in operation for some time.

Compared with the previous preheating furnace, this domestic carburizing furnace heat-treated workpiece, is indeed stronger than the previous heat-treated gear, surface hardness and other indicators, Duan Yun has tested several times, I feel that the gears in the gearbox are indeed more durable than the gears that have not been carburized, and the wear is also smaller, in a week of repeated tests, the carburizing process treated gear gearbox, has never had any problems, and the same structure, without carburizing the magnetic wheel gearbox, folded has broken two.

On the one hand, the carburizing performance of this domestic carburizing furnace is uneven, because it is a manual carburizing operation, the concentration of carbon gas in the furnace is difficult to maintain accuracy, which is an important reason why Duan Yun wants to change it to a CNC carburizing furnace.

On the other hand, there is the issue of cost.

The process quality of the product is good, but if the price is too high and expensive compared with similar products, it cannot be sold in the current national conditions, and even if it is sold, the profit margin is very small.

Although the performance of the two new carburizing furnaces is relatively advanced in China, compared with the preheating furnaces without carburizing function, the power consumption is very large, and it is precisely because of this that Duan Yun thickened the shell of the carburizing furnace in order to save energy consumption, which can save part of the electrical energy consumption.

All in all, Duan Yun's product design has been considered a success, the current test feels good, the gearbox is very good in operation, his follow-up work is mainly focused on reducing costs, and strive to improve product quality at the same time, the cost will continue to be reduced, so that their products have better competitiveness in China.