"It's good that there is no problem, now let people quickly check the size of these products, and then make a record, weigh and seal the package after cleaning, otherwise it will be oxidized......" The temperature is a bit high these days, even if the tungsten molybdenum atoms that are not easy to react with oxygen will be oxidized soon in the hot air.

The finished state of pure molybdenum crucible is silvery-white, and if it is oxidized, there will be many gray spots due to the density, making the whole product too ugly.

"By the way, Xiao Zhang, have the purity and density of our batch of sintered crucibles been sent to the physical and chemical analysis room for testing? If the purity and density can't meet the requirements of the 91 material, it will be troublesome......"

Xue Daoming, who had just breathed a sigh of relief, suddenly remembered that the small molybdenum crucibles produced in several batches in the previous batches were rejected by Jiuyi materials because the purity did not reach 99.95% of the Jiuyi materials, and only 99.8% was accepted; At the same time, the density did not reach the 9.98g/cm3-10.03g/cm3 proposed by Jiuyi materials, and it was precisely because of this problem that the small molybdenum crucible, which only took three days to produce, has not been delivered until now.

"Leader, the density has been reached, but the purity is still a little different, only 99.91%-99.96%, this ......" As soon as he heard this, Zhang Defu, who was originally full of confidence, suddenly became sad.

Although the process is proposed by Jiuyi Materials, many production parameters, Jiuyi Materials only provide a range, and are not accurate to specific values.

This point made the technicians of the 754 factory very painful.

But they also know. After the isostatic pressing after the finished powder, the pressure is different, and the holding time is different, and the molybdenum crucible produced will have slight differences.

The question of purity is a matter of raw materials.

What is the purity provided by the molybdenum powder supplier, they have no choice, just for the Jiuyi Research Institute's order of about 30,000 yuan, they have bought several tons of raw materials, and spent hundreds of thousands of material costs, if it is not for the production of some electronic components can be used. That's all. Xue Daoming had to cry blindly.

"Alas! This is only to wait for a while to see what Yun Fei says, prepare the test report, I guess he is almost there. Xue Daoming also knows that in terms of purity. They are able to control zhì. Just a small part.

Pure tungsten powder. They are all obtained through the chemical reduction reaction, and they can only be purified in a small range in the physical and chemical analysis room, which is important. It is still the sieving powder of the first process, if the particles with relatively large particles cannot be selected, it is impossible to achieve too high density.

"Mr. Yun, Mr. Xue went to the fifth branch factory, why don't you sit in the reception room for a while, and I will call Mr. Xue?" As soon as Yun Fei appeared at the door of the 754 Factory, Chen Xiaoqiong, who was waiting for him in the guard room, rushed out and said to Yun Fei, who had not yet stopped the car at the door.

"It's okay, I'll just go to the fifth branch factory, the purpose of my visit is to go to the fifth branch factory to see our products......" Yun Fei said with a smile to this middle-aged woman who wanted to introduce herself to someone.

"......" Chen Xiaoqiong was stunned, but Xue Daoming told her that she must invite Yun Fei to the office first, and wait for him to come back from the fifth branch......

But now that Yun Fei wants to go directly to the fifth branch, where does she have any good reason to stop Yun Fei?

Could it be that Xue Daoming has no confidence in the products produced by the Fifth Branch? Do you have to check before you can come back and take Yun Fei to see it?

If that were the case, Xue Daoming would definitely kill her!

"Mr. Yun, why did you come to the workshop directly?" Seeing Yun Fei entering Zhang Defu's office company of the fifth branch with two sturdy middle-aged men, didn't he let Chen Xiaoqiong stop Yun Fei at the door?

"If I don't see the finished product, I can't put it down, Mr. Xue, my chief engineer Deng Lanqing, you haven't seen it, it's very tough, who can stand it if you come to my office every day to make trouble?" Yun Feipi said with a smile.

Deng Lanqing's spicy man is known throughout Rongcheng.

When she was conducting the experiment, Xie Heping brought some customers with investment intentions to visit the Jiuyi Research Institute, and wanted Deng Lanqing to stop the experiment and introduce it to the customers, but Deng Lanqing, who had not made progress for a long time, was kicked out of the real room, which made the whole Rongcheng know.

Even the Sichuan girl, who is known for her pungency, is weak in front of Deng Lanqing, a northern girl.

Mr. Yun laughed. There will never be such a thing in the future......" Hearing Yun Fei's words, Xue Daoming suddenly felt that the weather in the morning became hot in an instant.

If Deng Lanqing is asked to come to the door, it will not be as easy to talk as Yun Fei when he comes to the door.

Deng Lanqing is a madman in the eyes of many people!

A shrew!

If this woman comes to the door, can she still live this life?

"Where is the product of the first furnace? Let's take a look. I can't see the finished product, I really can't put it down! "Yun Fei is telling the truth.

This thing is too critical to the study of NdFeB.

A lot of projects are waiting for the materials to be cooked.

In the past two years, with the rapid development of China's electronic information industry, automotive industry and other industries that need NdFeB rare earth permanent magnet materials, China has more and more requirements for these high-performance rare earth permanent magnet materials.

There are not many such materials in the stock of the Jiuyi Research Institute.

Sensors for production equipment, sensors for research machines, and computer hardware research are also needed, and with the acceleration of research progress, the demand is increasing......

"These molybdenum crucibles are wet?" The small molybdenum crucible of the first furnace is not large, with a diameter of only 140mm, which is not very big. Yun Fei frowned as soon as he took the product in his hand.

It must be that these guys started to take the furnace before the temperature in the furnace was completely cooled to normal temperature, and the sweat of the workers dripped onto it, otherwise, no matter how hot the weather was, the sintered small molybdenum crucible would not be oxidized so quickly......

"No, after we take it out, it's all cleaned with alcohol, how can it be wet?" Seeing a few finger-thick gray spots at the bottom of the crucible in Yun Fei's hand, fine beads of sweat began to appear on his forehead.

The purity and density of this product are not enough, and the problem of oxidation alone is a troublesome thing.

Sweat is salty!

Moreover, the small molybdenum crucible used to sinter the rare earth permanent magnet cannot be washed with lye or acid water, otherwise, the acid or alkali remaining inside the crucible will cause damage to the rare earth permanent magnet in the crucible......

"Sweat!" Yun Fei said coldly.

At high temperatures, the brine reacts quickly with molybdenum atoms......

"This, this ......" Xue Daoming suddenly became anxious. For the production process of this small molybdenum crucible, more than a ton of materials are wasted, plus labor, energy and others, and the cost is hundreds of thousands!

If Yunfei cancels the order because of this, there is no follow-up order, what is the problem?

Domestic companies that can use small molybdenum crucibles do not look down on companies like them that have just entered the industry.

If you can't create zào benefits in a short period of time, it is very likely that it will be sold or closed down by the entire Chengdu city government!

In recent years, there have been too many bankrupt companies in China.

"Let's not talk about this problem for a while, Mr. Xue, what are the technical conditions of these small molybdenum crucibles?" Seeing those spots that oxidized rapidly because of the sweat of the workers, Yun Fei was secretly refreshed, and he was worried that he couldn't find how to sell the technology and process of deionized water anti-oxidation to the 754 factory.

It's like drowsiness meets a pillow.

As long as these products meet their technical standards, then selling them this anti-oxidation technology process is an absolute certainty.

Many semi-finished products such as wooden yuan plates, tungsten target blanks, and molybdenum yuan blanks produced by the fifth branch of 754 have been returned by Jiuyi materials because the anti-oxidation technology is not up to standard, and these materials used in electronic products cannot be cleaned with acid and alkali at all......

This technology is not sold too much, let the 754 factory give 350,000 yuan, and it will be about the same.

There are many enterprises in China that need such technology, and even if they sell ten, they can still have an income of three to five million.

That's much higher than investing!

Hundreds of percent of the profits.

"Mr. Yun, this, due to the immaturity of the process, the purity is still a little bit unable to meet your requirements......" Zhang Defu on the side said to Yun Fei with an embarrassed face.

Yun Fei was stunned.

Nima, it's been a few months, and the production process is not yet mature? At the beginning, I provided a complete production process, although three or two more, I was able to grasp the range of parameters!

"Sue sù I count jù specifically, how much is the difference? A hundredth difference is a little bit, and a zero hundredth of a percent is also a little bit! Yun Fei's face began to turn cold.

Just say the number jù, and you can understand how much difference it is at once!

I actually said a little bit in generality!

"The purity is only 99.91%-99.96%, this ......"

"All?" Yun Fei frowned.

Whether it is a tungsten crucible or a molybdenum crucible, a purity of 99.95 is the minimum standard. The higher the purity of the crucible, the longer the service life.

Even at a density of 99.95%, the service life of these crucibles is generally three months away!

The cost of a small molybdenum crucible of about five kilograms is about 3,000 yuan, and in the cost of producing NdFeB rare earth permanent magnets, it costs about 30 yuan per kilogram!

The service life is shorter by one day, and this cost has to be increased......

"Yes, Mr. Yun, we will definitely improve in the future, but this, you see......" Wu Daoming now strangles the hearts of those people in the production department and the marketing department, if it weren't for them, where would such a problem occur?

"You mean to give in to receive?" (To be continued......)