Tang Zifeng and Han Weichang waited in Jianhe for two days, and finally waited for Pan Shikai's reply. After Pan Shikai reported to Zhu Qilin, director of the Xizhong Production Division, Zhu Qilin said that he could let the experts of Linyi Machine come over and at least diagnose the problem of the grinder. In addition, if the experts of Linyi Machine are sure to repair the grinding machine and the cost is reasonable, then it is okay to ask them to repair it.

There is no need to consult the factory leaders for the maintenance of a grinding machine. After Zhu Qilin nodded, Pan Shikai took Tang Zifeng and Han Weichang to their precision machining workshop to inspect the malfunctioning Dawes grinding machine.

In the past two days, Han Weichang has done a simple popular science to Tang Zifeng, saying that in fact, Linyi has studied Dawes's grinder, and he is not bragging. In the past, in order to develop a new type of grinding machine, Linyi machine took the method of learning from others' strengths, and purchased several foreign grinding machines through some channels for dismantling and imitation, some expensive grinding machines Linyi machine could not afford to buy, but also to the enterprises with this kind of grinding machine to visit, and mastered the basic situation of these grinding machines.

At that time, there was a big gap between China's industrial level and Western countries, and the materials and processing techniques used in the components of some imported machine tools were beyond the capabilities of Chinese enterprises. In order to imitate such a machine tool, Linyi Machine had to find a unique way, and this required process engineers to come up with creative solutions. Han Weichang, as the deputy chief of the technology section of Linyi Machine, has put some effort into these aspects, and now there are enough people to bluff Xizhong.

Xizhong's 800mm high-precision cylindrical grinding machine happens to be one of the imported grinding machines that Han Weichang has studied. He asked the operator to process a few workpieces, looked at the working condition of the machine tool, and inspected the machining error of the workpiece, and already knew it in his heart.

"This should be because the spindle bearing is worn, resulting in the spindle rotation accuracy is out of tolerance, the radial clearance is too large, and the roundness error of the machining exceeds the quota value. Han Weichang said firmly.

Pan Shikai nodded and said, "We also judge in this way, but we are not as professional as you, and we dare not draw conclusions." ”

Han Weichang said modestly: "There is a specialization in the art industry, we are in this business, we have seen a lot, and some judgments are not far from ten." ”

"So, can you fix it?"

"It's okay to ...... repair"

This time, Han Weichang's words were not so refreshing, and he set his sights on Tang Zifeng.

Tang Zifeng didn't understand what Han Weichang meant, he asked, "Old Han, what's the situation?"

Han Weichang said: "Assistant Tang, the problem with this grinding machine is the wear of the spindle bearing. The spindle of this grinding machine is supported by two sets of double row cylindrical roller bearings and a set of double row thrust ball bearings with 60 degree angular contact, all three sets of bearings from SKF Sweden. The cylindrical grinder produced by our factory also uses these types of bearings, so there are these three types of bearings in the warehouse of our factory......"

"Is it original SKF?" asked Pan Shikai.

Han Weichang said: "Of course it is original. These three kinds of bearings are also imitated in China, but we have tested that the rigidity and high speed of domestic products are not as good as the original SKF ones. Therefore, when we produce precision grinding machines, we use original bearings from SKF. ”

"So, if we buy these three sets of bearings from you, how much will it cost?" Pan Shikai asked again.

Han Weichang said: "I don't know the specific price, it should be more than 2,000 yuan in total." ”

"So expensive!"

"It's only 2000!"

Tang Zifeng and Pan Shikai exclaimed at the same time, only to find that the words of the two people tasted completely different. Tang Zifeng has no concept of the price of bearings, and thinks that it is just the accessories that are available on a board car, no matter how expensive it is, how can it be worth 2,000 yuan. Pan Shikai is the opposite, he knows that domestic bearings are very cheap, but imported bearings are expensive.

There are a lot of imported equipment in Xizhong, and when foreign manufacturers came to do maintenance in the past, it was normal to charge one or two thousand dollars for a bearing. Now to replace three sets of bearings, even if Han Weichang quotes a price of 2,000 US dollars, he will not be too expensive, but Han Weichang said 2,000 yuan.

Actually, this is not surprising. As a machine tool manufacturer, Linyi Machine directly purchases bearings from SKF, and the batch is relatively large, so the price is naturally cheaper. Xizhong invites foreign manufacturers to do maintenance, and the manufacturer will of course report the price of accessories to the sky, and the profit from maintenance is not like this?

"If it's 2,000 yuan in total...... Pan Shikai calmed down a little and said: "I'll ask the leader for instructions to see if I can ask your people to bring a few sets of bearings over and replace them for us." However, we have to say ugly things in front, if you come to help replace the bearing, after the replacement of the grinding machine's machining accuracy and service life, can you guarantee?"

"That's a sure guarantee. Han Weichang said, "We have also repaired the imported machine tools used in our factory, and there is no problem after repairing." Although we have not repaired your kind of grinding machine, we have disassembled similar models, and the accuracy and service life are no problem after installation. ”

"This ......" Pan Shikai still hesitated. An imported grinding machine is worth more than 2 million, which is not something that Han Weichang can believe if he says it casually.

Tang Zifeng looked at Han Weichang and asked, "Old Han, is what you just said the truth?"

Han Weichang had a bitter face: "Assistant Tang, am I the kind of person who loves to brag?"

"Huh. Tang Zifeng gave Han Weichang a meaningful hehe. Of course, he knows that Han Weichang not only loves to brag, but is also good at telling nonsense in front of customers, and even said nonsense in newspapers...... , which is inevitably affected by Assistant Tang's ears and eyes. He asked Han Weichang that sentence just now, just to determine how many ambushes Han Weichang had, and when he heard Han Weichang's answer, he understood that what Han Weichang said this time was indeed the truth.

Knowing this, Tang Zifeng became confident, and he said to Pan Shikai: "Section Chief Pan, let's do it, let's sign a maintenance agreement." After we replace you with new bearings, if the accuracy of the grinding machine does not reach the original level, we will not accept anything, and three sets of bearings will be given away in vain. Within one year, if the grinding machine fails again due to the bearings, or if the accuracy is reduced, we will give a full refund. What do you think?"

"Okay, I'll report to the leader. ”

Pan Shikai was tempted, Tang Zifeng was indeed very sincere in offering such conditions. From the perspective of Xizhong, please come to repair this grinding machine, of course, there are risks, in case the repair is not good, go back and ask Daos's after-sales service to repair, it is inevitable to pay a greater cost. However, it is impossible for him to let Linyi machine to compensate for this part of the cost, people are kind enough to help you, and also provide three sets of bearings worth 2,000 yuan, and you make more requests, it is too unkind.

Please come to help with maintenance, which is also a helpless move for Xizhong. At the beginning, they did pin their hopes for repairing the grinding machine entirely on the original manufacturer Dawes Company, but Dawes Company may be busy with business, or because they can't look down on this maintenance order, and the reply to Xizhong is polite, but when it comes to sending people over, they will push three and four, and they will never give an accurate word.

For this matter, Zhu Qilin also lost his temper in the production department, and said that if it really didn't work, he would go to a domestic manufacturer to repair it, and repair it until it could be used for a while. Xizhong now has several production tasks to use this 800 mm cylindrical grinder, and it is really not the right time to lie on its stomach.

Pan Shikai knew Zhu Qilin's thoughts, and now he heard Han Weichang say that Linyi machine has SKF's original bearings, and he knows how to maintain them, so he is naturally tempted. The reputation of Linyi machine is still good in the industry, after all, it is from the 18th Arhat factory, and the older generation in the machinery industry does not know the famous name of the 18th Arhat factory.

Receiving a call from Pan Shikai from the workshop, Zhu Qilin came over at a gallop on a bicycle. As soon as he entered the workshop, he didn't care about greeting Tang Zifeng and them, and asked bluntly: "Can you really repair this cylindrical grinder?"

"I wish the director, you should trust the technical level of our Pro Yi machine. Tang Zifeng said proudly.

"Pro One Machine...... , Mmmm, the past was still good, how about these years......" Zhu Qilin said halfway, and swallowed back the words later. In any case, people come to help them overhaul the grinder, and it is too unreasonable to say those bad things by themselves.

"How much do you have to charge to repair this grinder?" asked Zhu Qilin.

Tang Zifeng looked at Han Weichang, and Han Weichang said in a snort: "This is really not easy to calculate." Three sets of bearings according to our purchase price, plus a handling fee, how much is how much, I estimate that it will not exceed 2000. However, the cost of repairs is ...... , we have to send someone over, and we have to bring tools, this cost ......"

"We only charge for materials, and we are free of charge. Tang Zifeng interrupted Han Weichang's words and said to Zhu Qilin.

"The working hours are all free?" Zhu Qilin was stunned, "Why is this?...... You send people here, and the transportation expenses are quite a lot. ”

Tang Zifeng said: "We bear the transportation expenses ourselves, and in terms of working hours, they are all people in our factory anyway, and they have to be paid wages whether they work or not, so they don't have to collect it." We only have one request, if we can help Xizhong repair this grinding machine, I wish the director can we send a message to the factory leaders of Xizhong, asking them to consider purchasing the heavy-duty boring and milling of Linyi machine. ”

"You're here for heavy boring?" Zhu Qilin was a little unconscious. Pan Shikai knew about it, but he didn't report it to Zhu Qilin, only said that someone from Linyi had gone to Jianhe on a business trip, and he heard that Xizhong's grinder was broken, and he was willing to come over to take a look. Zhu Qilin was still a little puzzled at the time, he didn't know why the people who were on the plane were so enthusiastic, but now when he heard it, he knew that people had ulterior motives.

"The matter of heavy boring has been decided in the factory, and it may be very difficult to change. Zhu Qilin hesitated and said, "Actually, Assistant Tang, if you can help us repair this grinding machine, we can pay for the transportation and working hours of the maintenance personnel, and we can pay according to the highest standards in China. ”