Referring to his father-in-law, Ye Guchen looked sad, "The iron ore seems to have been smelted almost, but why does the molten iron splash so much, will there be a problem." He deliberately diverted the topic.

"No, this means that there is gas boiling, it is a good opportunity to remove carbon, you can control the carbon in the molten iron within a certain range, the quality of the molten iron will be close to steel, and the density of the finished product will increase, which will better fool those people in the church."

"Looks like you know a lot". Although Ye Guchen is a high school student, he has not been exposed to any industrial knowledge with this academic degree, but in the half a year of contact with his stepfather, he has learned a little fur, which is too far from Lu Haoyu's mastery of smelting technology.

"Well, or I'll go out and guide you myself." His praise for Ye Guchen was still very useful, and he looked proud.

"Isn't it time for molten iron to be baked?" Ye Guchen was a little impatient.

"Not yet, get some limestone and add it in."

"Limestone? Why. Ye Guchen was puzzled.

"Sulfur removal, don't you smell a bad smell, your pig iron ore purity is too low, it must contain a lot of sulfur and phosphorus, these impurities will have a certain impact on the finished casting."

"What will be the impact?" Ye Guchen humbly asked for advice.

"Sulfur produces hot brittleness, which simply means brittleness at high temperatures and cracks. And create many porosity and porosity in the metal weld. If there is too much sulfur, it will definitely not pass the eyes of the professionals of the church. There is also a lot of sulfur that will affect the electromagnetic properties of the casting, and if you want the divine instrument to work, you can't be careless at all. ”

Ye Guchen nodded hurriedly after hearing this, at this moment Lu Haoyu was no longer a sesame soldier in front of him, his image became very tall, and the star of hope was dazzling and bright again.

"In addition to sulfur, phosphorus is also a harmful substance, which mainly produces low-temperature brittleness and is prone to fracture during subsequent heat treatment processes. If you think about it, the accessories we finally cast have cracked before they have been processed and installed, and it is not in vain. ”

"So what to do? Will limestone solve the problem? "He really has a lot of this stuff at home, after all, limestone is some cheap things, and the imperial army, the government, and the major families will not have any supervision on this ore.

Lime products will have a certain effect, but can not be completely removed, increase the furnace temperature of the electric arc furnace, and then put some special metals into it, which is not only effective for sulfur and phosphorus, but also can improve the degree of alkali.

Lu Haoyu took out several large pieces of special metals specially separated by Hou Xiaoxian from his arms, which were the added alloys he had prepared for smelting a long time ago.

For his arrangement, Ye Guchen complied with them one by one, and was completely convinced.

After another half an hour, the temperature of the molten iron became hotter and hotter, and the degree of splashing was also intensifying, Ye Guchen deliberately moved away, carefully retracted his left hand, and regarded Lu Haoyu as a baby in swaddling clothes, taking care of it meticulously, and Lu Haoyu could only see the smelting process from his fingers.

"It's almost hot, pour it out a little, let me see it first", Lu Haoyu's eyes were full of anticipation, and he even licked his tongue involuntarily. Although he was protected in Ye Guchen's hands, the accumulation of fire energy continued to grow, reaching 80%.

Ye Guchen was not so anxious, put Lu Haoyu on the ground, and took out a piece of metal to cover him, so as to avoid pouring molten iron, he was afraid that he would be splashed by molten iron.

"It's still quite careful, but it looks a little girly", of course Lu Haoyu didn't dare to say it, he was worried that Ye Guchen would throw him back into the house directly, so that all his opportunities would be wasted.

Next, Ye Guchen put on a pair of thick gloves, held the handle of the small electric arc furnace, and poured the electric arc furnace little by little, so that the molten iron gradually flowed out of the pouring ladle and flowed into a thick iron basin prepared in advance.

But at this moment, there was the sound of footsteps outside the courtyard, followed by a series of knocks on the door.

"Boom, Xiaoye, what are you doing at home? On this sweltering day, what kind of fire do you make in your home, and what can you do if you make a fire? Lu Haoyu heard clearly, at least two or three old neighbors came to care about Ye Guchen's "iron smelting".

"Someone is coming, what should I do?" For a behemoth like a human being, it is not yet within the scope of Lu Haoyu's ability to deal with it, he was so frightened that he shrank into a ball and looked at Ye Guchen worriedly.

Ye Guchen didn't panic at all, and he was very useful, although Lu Haoyu is a generalist in science and technology, he is not omnipotent, after all, he is a small soldier, and he still needs to survive under my protection.

He set up the electric arc furnace and put Lu Haoyu in a relatively safe place, and then walked to the door to negotiate with the neighbors.

Seeing that Ye Guchen was finally gone, Lu Haoyu immediately ran out of the safety nest unusually.

"It's a good opportunity to take advantage of the fact that the molten iron that has just been poured out has not yet solidified." The reason why Lu Haoyu pretended to be worried and scared was to divert Ye Guchen's attention, he had already made up his mind about this furnace of molten iron, looking at the menacing posture of the neighbors, it seemed that the chance of being able to make iron in the future would also become slim, and the girl-like master would never let himself take risks.

The small iron basin that was still splashing molten iron outward was like a swimming pool in Lu Haoyu's eyes, only about half smaller than the venue of the original swimming competition.

Lu Haoyu deliberately accumulated a certain amount of wind energy in Ye Guchen's hands, and now he just used it, he quickly ran to the front of the big iron basin, endured the high temperature brought by the molten iron, and climbed up to the iron basin more than ten meters high.

The closer you get to the iron basin, the hotter the temperature inside you feel, and the heat dissipation of the molten iron is not fast, and it cannot be completely solidified for a while. Fortunately, his physique is very strong, and his pro-fire energy has also improved, otherwise ordinary people would not be able to climb the hot iron wall.

Finally standing on the edge of the iron basin, he carefully sensed the impact of the high temperature molten iron on him, and the energy of fire increased rapidly, directly rising to 90%. He knew that the first storage of natural energy was quite crucial, and that an increase in percentage represented an increase in the affinity for fire.

It's almost full, I hope Ye Guchen will rub at the door for a while, it seems that a few old neighbors are very unkind to him for making a fire and smelting in the courtyard, relatively human beings are selfish, not to mention that once this causes a fire house, it will also affect the safety of other courtyards.

It seems that the result of the negotiation is not good, Lu Haoyu is worried, maybe he will not have a chance to smelt in the future.

Faced with a basin of molten iron, Lu Haoyu's scientific and technological essence was calculated to the extreme, and his first thought was not the danger, but how to transfer the molten iron into the casting cavity that the three rows worked hard to build overnight, which was the most difficult part. Due to the difference in body size between humans and creeps, many tools cannot be used.

The iron basin that can be used as a swimming pool, coupled with the hot iron of nearly 1,000 degrees, how to pour it into their carefully built casting box.

The essence of science and technology calculated for a long time without any results, and Lu Haoyu, who was roasted to the point of smoke in his throat, suddenly made a decision that scared everyone.