I! Pretending to Be Reborn, Director of Doomsday Hoax

Wo Chengwen and the others were shocked.

What they used was indeed the vanishing casting method!

Moreover, the problem of these defects is indeed inherent in this casting process.

In other words, as long as this process is still being used and the smelting process remains unchanged, it is almost impossible to solve these problems!

This is also the reason that troubles this group of engineers and designers.

At this moment, everyone became serious.

Being able to see the casting method and everyone's crux at a glance, Xu Qiu...is there really a way? !

The calm voice sounded again amidst the sound of wind and the click of gears turning.

Xu Qiu said unhurriedly, "There is only one way to completely eliminate the problem."

"Looking at the global smelting industry, the solution to the above problems is nothing more than burning first and then pouring, standardizing the design of pouring risers, and using vibratory pouring to refine grains. And these measures are related to pouring, so why don't we directly .. ..."

"Design a gating system?!"

There was a look of incomprehension on everyone's face.

Gating system... what is it?

Pouring is a step in the smelting process. How is it possible to design a system alone? !

Xu Qiu ignored the doubts in everyone's eyes and continued:

"For this pouring system, it is necessary to ensure a smooth and uniform pouring process, with low flow rate and large flow rate, which can shorten the filling time, avoid turbulent flow of molten metal and direct impact on the mold wall, and peroxidation of molten metal."

"At the same time, rationally design the position and quantity of vent holes in the pouring system, rationally design the location and method of cold iron placement, rationally design the connection method of the riser, avoid enlarging the hot joint of the riser, and design the exhaust system of the sand core to effectively solve the problem. Porosity defects and rapid cooling of castings..."

Xu Qiu looked at the [-]-degree hot molten steel, and a hypothetical model of the pouring system gradually emerged in his mind...

"During the filling process of molten metal, the thin film in contact with molten metal is cracked, vaporized, evaporated and melted, and penetrates into the sand under the action of vacuum, forming a shell-like scab around the molten metal. The metal itself and the coating are immediately responsible for sealing, and the molten metal flowing in a shell-like crust."

"The film close to the molten metal melts and infiltrates the surface of the coating, and continues to maintain the seal with the coating, while the film far away from the molten metal remains in its original state or melts; the gas in the cavity escapes to accommodate the molten metal filling the mold, the gas in the cavity and combustion Vigorous expulsion of product through the vents will last no more than a few seconds."

"The film on the surface of the cavity is not broken, decomposed, gasified and melted, part of the gas in the cavity passes through the molding sand and enters the vacuum system, and the outside air enters the cavity through the vent hole to supplement the gas loss entering the vacuum system. type continues.”

"After the strong exhaust process at the initial stage of pouring, it is followed by a slow suction process, and the gas continues to be discharged until the pouring is completed, the vent holes are filled, and the gas is exhausted."

"Once the position, number or cross-sectional area of ​​the vent holes are not set properly, there will be a strong exhaust phenomenon near the end of pouring, and the molten steel will be sprayed out through the vent holes..."

At this moment, the way Wo Chengwen, He Yude and others looked at Xu Qiu completely changed!

It was unparalleled astonishment and shock! !

According to Xu Qiu's imaginary model, they changed the pouring procedure and proceeded step by step according to the pouring system...

Only then did I realize that all the previous problems seemed to be solved! !

Any wall displacement, deformation defects, earthworm-like defects, and sand-sticking defects can all be avoided through the precise design of the gating system.

And the steel produced in this way will have more superior characteristics and a higher yield!

Everyone is indulging in such an exquisite design, their expressions are obsessed...

Zou Botao was shocked when he saw this scene!

Although he doesn't know much about steel casting, and he doesn't know much about mechanics, but...

He had seen such an expression on the faces of Xu Fu and Ji Chengping when Xu Qiu took out the blueprint of the difference machine!

At this moment, Xu Qiu's figure became even taller and unfathomable...

A few minutes later, Wo Chengwen first recovered from the shock. He sorted out the hypothetical model of the entire gating system and raised his own doubts.

"Director Xu! I'm curious, how to select and control the parameters of the pouring system, temperature and speed?"

Xu Qiu rubbed his chin.

He thought for a while and said: "According to the characteristics of your vanishing casting method, the temperature of this gating system should not be too high, which can reduce shrinkage defects, hot crack defects, and metal oxidation and carburization." "As for speed"

"The molten steel filling capacity of this system is relatively strong. In the case of ensuring that the vent holes do not choke the fire at the end of pouring, the pouring speed can be increased by about 20%-30% to ensure smooth and fast filling of molten steel!"

All the people present were the top elites in this field, Xu Qiu said a little bit, and the doubts in their hearts were immediately resolved!

Everyone raised a few more questions, and after Xu Qiu answered them one by one, the new pouring system was built, and the selection of bainite steel subspecies officially entered the right track in 09! !Xu Qiu looked at the roaring machines and rising steam in the iron and steel workshop, and at a certain moment, he felt like the ancient steam age was revived.

Extremely cold steel, extremely cold steel rails, the next step is to lay this track across the country.

The construction plan of the nuclear powered train has finally started!

At five o'clock the next morning.

After returning from the Capital Iron and Steel Group yesterday, Xu Qiu was very tired. After sleeping until now, most of the energy consumption of these days has recovered.He opened the domestic information delivered by Lu Guangyuan.

[From 15H, the era of large-scale demolition began across the country, starting from the Yulong Garden Community in Pengcheng, and the southeast region, South China region and other regions began to demolish one after another]

[The demolition plan in Hunan Province is progressing vigorously. At present, one tenth of the idle houses and abandoned houses have been demolished. It is estimated that it will take half a month to complete the next demolition progress. 】

[The Meteorological Bureau reported that the heavy snowfall across the country stopped around [-]:[-] yesterday. The heavy snow came and went suddenly. The specific cause is still under investigation.The Bureau of Meteorology will track the latest global climate change and provide timely warnings of climate disasters across the country. 】

[The Bureau of Agriculture reports that the latest agricultural dispatch shows that the heavy snow has not affected the crops in our country. In most areas, the crops are growing well after the snow, and there is a foundation for a bumper harvest!The Agricultural Bureau will actively respond to the call of the Emergency Bureau, transport and provide a large amount of grain reserves for the whole country, and contribute to the people of the motherland to survive the disaster! ! 】

[National Energy Administration report!Three ore veins and four oil fields have been discovered in our country, which can provide a better foundation for the construction of underground cities!At the same time, the total mileage of my country's natural gas pipelines has reached 110,000 kilometers, and natural gas covers the whole country, and the "one national network" has basically taken shape! 】

[The Ministry of Dungeon Construction reports that the dungeons in more than 600 cities across the country have basically been excavated to 40 meters underground, and it is expected to enter 50 meters underground within this week, starting the second phase of construction! 】

[The Rocket Army reacted quickly in the Northwest desert and successfully launched three new missiles, which accurately targeted multiple protective positions hundreds of kilometers away from the public]

"The domestic construction is in full swing."

A smile appeared on Xu Qiu's face.

He opened another report.

This is foreign intelligence.

[Sakura Country announced yesterday that it will launch a disaster prevention plan nationwide, opening the era of "Cherry Blossoms Will Live Forever", and issued a national decree to build a ring-country train! 】

[Berry Country began to purchase large quantities of construction materials such as steel from overseas. Under the threat of Berry Country, most third countries had to export precious building materials at low prices.On the same day, the Ministry of Foreign Affairs and Education of China made a statement saying: The Dragon Kingdom will never seek hegemony, expand, or use coercive means such as coercion, intimidation, and restraint against other countries that are temporarily backward in development. 】

[The kangaroo country is in chaos!Doomsday survival protests broke out in many places, and demonstrators also set off Molotov cocktails to express their anger at the country's failure to take measures to resist the doomsday. 】

[Prime Minister of the Eagle Kingdom stated that the veracity of the doomsday cannot be determined for the time being. The Great Eagle Empire is watching the global situation to verify whether the prediction of the meteorite falling in the Siberian Plain is true before taking action. 】

[The Orthopedic Country announced the sanction list, as many as more than 900 people, all of whom are Berry citizens.It is reported that this group of people responded to the call of the Berry Country and returned to the Berry Country to fight against the apocalypse, but some of them carried some of the orthopedic country's secrets when they left. 】

[The president of the White Flag country abdicates.The people were furious and denounced him for not being good enough in psychological quality, and he was defeated without fighting.The new president will officially take office in three days. At that time, the president may issue a new national decree, which may be related to the resistance to the end. 】

[The social survey of Xiongguo shows that most people don't care about the meteorite falling in the Siberian plain.The reasons for the top three are: nothing to do with me, the distance from the Siberian Plain, and the fact that most of the Siberian Plain is uninhabited.However, the Meteorite Disaster Bureau specially established by Xiong Country has already started disaster prevention...]

The global situation is quietly changing.

Xu Qiu looked at the world map on the wall directly opposite, and felt a sense of controlling the world in his heart.

Today, the fraud is getting better.

Various countries have split support factions, and have begun to call on the people to organize spontaneously to resist the disaster.

Soon, as the prediction of a meteorite falling in a few days comes true, the supporters will become the mainstream of society!

At that time, perhaps most countries in the world will be forced by the pressure of the people, and the fishing boats of society will have to start planning for survival after the sun goes out!

Next, Xu Qiu only needs to continue to deepen the fear of "the sun goes out" and continue to give evidence of the authenticity of this prophecy,

In the later stage, even if Xu Qiu told everyone that this was a plan to deceive all mankind, they would believe it!

"Guangyuan."

Xu Qiu withdrew his mind and shouted.

Lu Guangyuan pushed open the wooden door and walked over, respectfully said: "Director Xu, are you looking for me?"

"Well, issue a national warning."

"National alert?!"

Lu Guangyuan's eyes froze.

The day before yesterday was a global blizzard, and now a new disaster has come? !

Xu Qiu nodded and said slowly: "Do you still remember what I said about the meteorite falling?"

"Of course I remember, you said that on July 21, that is, four days later, a meteorite with a diameter of 500 meters will fall on the Siberian plain!"

Xu Qiu looked far and said, "A meteorite with a diameter of 800 meters, as long as it reaches the average speed of a meteorite, is enough to destroy the entire Blue Star. Guess what this meteorite with a diameter of 800 meters will bring to Blue Star?" Lu Guangyuan's pupils shrank suddenly.

He finally understood the purpose of Xu Qiu's "National Early Warning"!

Xu Qiu got up and walked to the window.

His office is at the highest level of the Emergency Bureau. From here, one can overlook Qinghua Garden, even Tiandu City, and have a panoramic view of the capital city of Longguo.

Xu Qiu stood with his hands behind his back, and said in a voice full of sympathy and love for the people: "When a meteorite hits the earth, it is like throwing a stone into calm water. As long as the stone is big enough, the ripples it spreads will affect the whole world. A body of water."

"Although the huge peaks and deep valleys on the surface of the blue star can alleviate this shock wave and reduce the damage as much as possible, this 500-meter meteorite will still cause natural disasters such as earthquakes, tsunamis, and storm fires!"

Lu Guangyuan took a breath.

"This disaster...how bad will it be, will our people be harmed?" he asked worriedly.

Xu Qiu nodded, "Injury is inevitable, but we can avoid death!"

"Just a few years ago in November, an asteroid the size of four football fields, or 400 meters, 2017-YU55, passed between the blue star and the moon."

"Just passing through, it will cause large and small earthquakes, tsunamis, and changes in the moon's tides all over the blue star!"

"And if it hits the earth directly, according to my prediction, this 2017-YU55 will form a crater with a diameter of about four kilometers, and cause a local earthquake of magnitude seven!"

"Moreover, a huge tsunami up to 21 meters high can be formed, and the maximum expansion length of this tsunami can reach nine + six kilometers!"

Lu Guangyuan bowed and bowed, "Director Xu, please give an order to warn the whole country!!"

Xu Qiu nodded and said, "The first is the earthquake."

"Longguo is located between two major seismic belts in the world - the first circum-Pacific seismic belt and the Eurasian seismic belt. It is also squeezed by the Pacific plate, the Tianzhu plate and the Feilibin plate, and the seismic fault zone is active."

"Therefore, the cities in the southwest region, northwest region, north China region and southeast coastal regions, all of which are located in the earthquake zone, should warn the whole people! Especially the provinces around Sichuan Province and the Qingzang Plateau!"

"On the 21st, the construction of underground cities, agricultural cultivation, and demolition plans across the country will be completely suspended!"

"All personnel, go to the local earthquake shelter and evacuate in advance!"

Having said that, a smile appeared on the corner of Xu Qiu's mouth, and added: