Traveling through the sword to engage in military industry

"Chief Gao, the dimensions here seem to be off by a little bit. Adjust it again. Our precision needs to be at least millimeter-level."

In Yang Village, Ren Zhong led Gao Kaiming's mechanical processing team in a grueling pattern-making effort.

Casting large castings is no easy task, and pattern-making alone involves a huge amount of work.

Moreover, selecting the right molding sand for the pattern is also challenging. Depending on the casting requirements, the molding sand needs at least four different raw materials: silica, alumina, ferric oxide, and clay. In addition, the molding sand may also contain other auxiliary materials, such as water glass, cement, and resin, to meet different casting needs.

Machine tool bed castings, machine tool worktables, and machine tool castings require dry-type pouring to form better castings, which raises the requirements even higher.

In Yang Village, apart from clay, other materials are not easily available, so Ren Zhong simply brought them over from the main plane.

Fortunately, these things occupy relatively little volume and weight. The largest quantity required is clay, which can be obtained locally. Now, Ren Zhong has a heavy burden of goods to carry, including seeds, copper plates, machine tool parts, and even hydroelectric generator parts.

The machine tool model parameters that Ren Zhong obtained from the main plane are just a bunch of data. Turning them into molds for machine tool castings still requires a lot of effort.

Unable to find enough candles to shape the machine tool's appearance and then melt them away with heat to create a lost-foam casting due to a lack of conditions, Ren Zhong used wood to imitate a one-to-one hard model for the first machine tool. Then, he covered it with molding sand, formed it, separated it into two halves, and then tried to create a seamless joint.

Fortunately, with Gao Kaiming and his group of new tool workers, they had some experience with these operations. Following the graphics and parameters that Ren Zhong provided, after several days of working late into the night, they finally made the models for the first machine tool's bed and worktable.

"Chief Xu, Chief Gao, perhaps today we are about to create a new history." In front of Furnace No. 1, Ren Zhong, waiting for a furnace of new gray cast iron to be smelted, couldn't help but joke when he saw Xu Jiucheng and Gao Kaiming were very nervous.

Of course, if this casting is successful, it will indeed create history, and a history with a very high starting point.

This not only creates a new history for the base area but also means that high-end machine tools can be cast and produced!

For the whole country, this will also be the first high-end machine tool. The 6140 was unremarkable in the 1970s, just like an old workhorse, but in the 1940s, it would be competitive internationally. Moreover, Ren Zhong also asked his two senior brothers to use first-class high-quality tool steel from the main plane.

Once assembled, this new machine tool will undoubtedly be the first advanced mechanical processing master machine in the base area.

At least everyone saw that the first machine tool was cast and assembled in Yang Village, didn't they?

Even though China can't talk about intellectual property protection yet, Ren Zhong can register the patent for this machine tool after driving away the little devils. After all, in this Bright Sword world that Ren Zhong is in, these are undoubtedly innovations with independent intellectual property rights!

"Boss Ren, aren't you nervous?" Gao Kaiming looked at the silent blast furnace. "If we can cast this, it will truly push our mechanical processing to a new height. I just don't know how we'll find a generator to power this precious machine tool."

Gao Kaiming was thinking far ahead.

Ren Zhong smiled slightly, "We can just build another hydroelectric generator ourselves. There's water flow in Yang Village, so we'll use hydroelectric power in the future."

"Boss Ren..." Gao Kaiming was really speechless. What kind of talk was that? As if a hydroelectric generator was a paper airplane? Able to be built just by saying it?

However, thinking that even the machine tool had been brought out by Ren Zhong, Gao Kaiming was powerless to refute.

Xu Jiucheng stared at the blast furnace without saying a word. He was already used to being tormented by Ren Zhong. What Ren Zhong said was what it was. After all, a steel formula would be given in a few days, and a new steel formula, or rather, a high-quality steel variety, would be given in a few days.

Now, relying on the ordinary-looking earthen furnace in the village, Xu Jiucheng was indeed doing a smelting job that was unique in the whole country.

Who would believe it if he told them?

After completing the production of the first batch of steel, Xu Jiucheng took the initiative to write a letter, which was forwarded by someone from headquarters to some of his old colleagues, hoping they would come to the base area together to witness the miracle of the domestic steel industry. He just didn't know if they would believe him or not.

After all, with these achievements, Xu Jiucheng felt that as long as he didn't die, he would definitely be a part of the history of domestic steel. Even if he was just a witness, he was still someone who had stayed by the side of Ren Zhong, this pioneer.

"I'm not kidding with you. The core parts of the hydroelectric generator have already been transported over by the organization. We'll cast the casting parts later and match them with the machine tool," Ren Zhong said solemnly, seeing their disbelieving expressions.

"That would be great. Do you have the drawings for this machine? I'll have everyone make the mold first," Gao Kaiming finally believed that Ren Zhong wasn't joking.

"Of course, I do. Don't worry. Look, the molten iron is coming out. It seems we won't have any problems with the machine tool base today," Ren Zhong said, smiling and changing the subject as he watched the blast furnace begin to flow out with fiery red molten iron.

The molten iron that flows out at the beginning will naturally not be needed. These molten iron impurities are obviously much more numerous. Only when a stable flow is formed after a part has flowed out is it reliable gray cast iron molten iron.

Several smelting workers stood ready with crucibles. With Xu Jiucheng and Gao Kaiming, these ten or so skilled workers, Ren Zhong was finally freed from the hands-on operation.

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Waiting for the molten iron to accumulate to nearly 1 cubic meter, the smelting workers began to quickly use the crucible to fill the model of the 6140 machine tool base. The base, weighing nearly 2 tons, required the smelting workers to fill the model within ten minutes, otherwise, due to the inconsistent temperature of the molten iron before and after pouring, the quality of the casting would be seriously affected.

Ren Zhong had long understood these process control requirements very clearly from the main plane.

However, the cooling time after pouring cannot be as crude as the previous steel test, using cold water to temper after solidification. For large castings, this is simply a destructive test.

After pouring, it is necessary to wait a few days for the entire model casting to cool down naturally.

In order to ensure that the internal and external solidification of the casting is the same, sometimes it is even necessary to appropriately heat the outside of the sand mold to make the internal and external temperature of the casting cool down consistently.

These are all slow, meticulous tasks. After seeing the model poured well, Ren Zhong had no interest in continuing to watch and instead handed over these process flow requirements to Gao Kaiming and his tool workers.

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