Tech Islander

Chapter 6 An Unexpected Miracle

Ning'an Special Steel Branch.

The first test run of bearing steel production is still in full swing.

After undergoing key processes such as electric furnace remelting, primary and secondary refining, the pure and uniform molten steel soon reaches the last process link - continuous casting.

In the main control room, the two senior ministers gradually put away their thoughts of relying on their elders and selling their elders, and they dared not show off in front of Wu Tao.

After all, Wu Tao's professional skills and technical strength can be successfully completed in the first few steps of process control and debugging.Such talents, no matter where they are placed, are talents worthy of attention.What's more, at a young age, the future development is even more promising?

By this time, youth is no longer a disadvantage or shortcoming, but a real advantage.

Suddenly, the continuous casting workshop reported an emergency.

"Report, the section of the slab exceeds the expected area, reaching 280×250mm by visual inspection, and it is still increasing!"

Minister Liao and Minister Chen stood up at once, chattering tremblingly.

"I've known for a long time that things won't go so smoothly, so something went wrong now?"

"That's it. If the cross-section of the slab is not well controlled, the quality is difficult to control. The problem of segregation, the control of the porosity of the center, the uniformity of carbides, etc., if any of the indicators are not well controlled, this batch of bearing steel is not good. It's useless!"

Wu Tao knew that the two veterans were right. It was a bit surprising that the pressure in the continuous casting process was not well controlled.It is too late to modify the parameters right now, and we can only wait for this batch of continuous casting to be completed, and then modify it before the next batch.

Breathing out a foul breath, Wu Tao felt a sudden increase in pressure.

However, no matter how much pressure he was under, the two veterans continued to babble endlessly.In short, in their eyes, Wu Tao is no longer a mature and prudent young talent, but a daredevil who does not know the heights of the sky and the earth.

Wu Tao finally couldn't bear it anymore: "Second ministers, the matter has come to this point, and it's useless to say it. Why don't you save your energy and grasp the rest of the process, and maybe you can recover the loss."

Minister Liao was obviously dissatisfied and said: "Recover the loss? Don't even think about it, these large-section billets must be scrapped."

"I think so too." Minister Chen echoed.

Wu Tao opened the control screen of the continuous casting workshop expressionlessly, thought for a while, and modified several control parameters in succession.This batch of parameters is a temporary adjustment, and it will be changed back when the second batch of continuous casting.

Time passed by every minute and every second. When the first batch of bearing steel entered the final inspection process, Wu Tao felt as if it had gone through 1 years.

Since the cross-section of the first batch of bearing steel is larger than the expected design area, the probability of problems increases sharply, which leads to more detailed and complicated inspection procedures and workload.

In the main control room, the two old ministers began to breathe anxiously and sigh repeatedly.

Wu Tao still sat in front of the console, and after issuing strict and on-site inspection standards to the inspection workshop, he began to pay close attention to the continuous casting process of the second batch of bearing steel.

Something went awry with the first batch, which meant it probably wouldn't pass inspection.Then this second batch must never go wrong again!Otherwise it would mean that the first production trial run was a complete failure.

Of course, Wu Tao couldn't accept such a result, and neither could the employees of the whole factory!

The process of waiting for the test results was long and tormented. During this period, the continuous casting of the second batch of bearing steel was progressing smoothly.This time there was no mistake like last time, the workers in the continuous casting workshop breathed a sigh of relief, everything looked perfect.

Finally, a female voice from the inspection workshop came from the intercom.

"General control room, the inspection workshop requests a report."

Wu Tao immediately grabbed the walkie-talkie, and the two old smoker ministers also stubbed out their cigarette butts, and they all came together.

"I am the master control room, please speak."

"The first batch of bearing steel, with a cross-sectional size of 300*280mm, has undergone systematic testing and is of high quality..."

"What, say it again!" Minister Liao yelled at the intercom with his smoke-smelling mouth.

"Repeat, the first batch of bearing steel, with a cross-sectional size of 300*280mm, has passed systematic testing, and the quality has not only passed the standard, but also reached the international first-class level..."

"That's impossible!" Minister Chen stared as big as a bull's eye, and met Minister Liao's eyes. Without saying a word, he rushed out of the main control room and went straight to the inspection workshop.

Wu Tao said to the walkie-talkie: "Reserve the inspection site, we will go there."

More than ten minutes later, Wu Tao followed the footsteps of the two ministers and walked into the testing workshop.

The huge cast slab is eye-catching.

Then Director Xu's hearty voice from the inspection workshop came: "What's the matter, Lao Liao, Lao Chen, Wu Tao, you still don't trust me? Have you come to inspect the work yourself?"

Director Xu's name is Xu Yan, he is a middle-aged man, wearing a pair of old-fashioned square-frame glasses, his whole person is full of old-fashioned meaning.Coincidentally, in the group company, he is also known for his staidness.Any quality flaws are unacceptable to him.

In the face of the old-fashioned, Minister Liao and Minister Chen did not dare to take it too seriously, and continued to explain: "We just haven't seen high-quality large-section bearing steel, and we just came here to see the world."

Through the two old ministers, Xu Yan directly greeted Wu Tao and said, "Minister Wu, you let us witness a miracle! In two days, we thoroughly understood the technical parameters of Nippon Steel's bearing steel process. Using a second-rate production line, we can make first-class steel. product. It’s amazing, it’s amazing.”

Wu Tao humbly refused to take it seriously, and changed the subject: "Director Xu, let's look at the specific test results."

"You are not arrogant or impetuous with your achievements, very good, young man." Xu Yan turned to greet Minister Liao and Minister Chen together: "Then come all over, let's take a look at each item."

"First of all, this is the detection of oxide content. Of course, the less oxide content in bearing steel, the better. At present, the best one in the world is RB's Shanyang Iron and Steel. Their oxide content can reach 4-6ppm. It is on the order of one part per million! This is amazing. But you see, the oxide content of our batch of bearing steel has reached a new low, reaching 0.1-0.2ppm, which is on the order of one part in ten million !"

"This is not an improvement at 01:30, but a historic improvement!"

Minister Liao and Minister Chen were both stunned.

Director Xu continued: "Let's look at the segregation problem..."

After some elated narration, Xu Yan proudly watched the two ministers, Liao and Chen, fall into a sluggish state again.

Wu Tao stepped forward and said, "Director Xu, in your opinion, will the second batch of bearing steel fail to meet the standards?"

Xu Yan picked up his air of old pedantry and said: "According to my years of experience in bearing steel testing, this possibility is extremely small. Because even the products with large cross-sections are of high quality; this second batch of products with small cross-sections, The quality will only get better. If you don’t believe it, you’ll know when the test results come out later.”

(End of this chapter)