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The Kiln District Steel Works now produces two types of cast iron.

The first is ordinary cast iron refined with a reverberatory furnace. This kind of cast iron has a wide range of uses and can be seen in later generations: various cast iron water pipes, railings, bases, manhole covers, gates... In short, anything that is bulky and cheap

Object, just use it.

Ordinary cast iron has always been the most important item in steel plants, once accounting for more than 80% of the total products.

Now, with the successful research on more advanced ductile iron, the output of ordinary cast iron has slowly declined to 60%, and the rest of the share has been given to steel and ductile iron.

Ductile iron is a high-strength cast iron material. Different from ordinary gray and white cast iron, ductile iron needs to be spheroidized and inoculated to obtain spherical graphite during smelting before this product can be made.

Due to its excellent performance, ductile iron, whose comprehensive performance is close to that of steel, can be used to cast parts with complex stresses and high requirements for strength, toughness and wear resistance. The so-called "replacing steel with iron" mainly refers to

Ductile iron.

In fact, in terms of casting and machining, ductile iron is far more useful than steel. You must know that the fluidity of steel is very poor, making castings very difficult; and ductile iron has excellent plasticity and toughness, at least in the

In this dimension, ductile iron is the real star.

For example, in a wood gas engine system, in addition to the thin iron plate for the chassis casing, the interior includes various mechanical crankshafts, camshafts, connecting shafts, connecting rods, gears, clutch plates, cylinder blocks, etc.

The key parts are actually made of ductile iron.

Even in later generations of engines, there are still many parts made of ductile iron. This material can be used for casting, forging, and cutting. Today, it is this sudden rise that occupies the top of the food chain in the field of machining and casting.

new materials.

In the past, steel mills were unable to produce ductile iron. It was not because of how difficult it was to smelt this material...at least it was easier than making steel. The key to the problem was that the spheroidizing agent was not in place.

When ductile iron is incubated in the furnace, it is necessary to add a spheroidizing agent. The main material in the spheroidizing agent is magnesium, or pure magnesium can be used directly.

Therefore, industries are interconnected.

The prerequisite for the spheroidizing agent is a chemical plant. Only with a chemical plant and stable hydrochloric acid can we cooperate with the electrolysis process and the seawater magnesium extraction process to produce enough metallic magnesium to be used as a spheroidizing agent.

This is the reason why ductile iron can only strike later: the prerequisites have not been in place for a long time. Once all the conditions are met, the output of ductile iron will grow very fast. After all, this is just a kind of cast iron, smelting

It will certainly not be more difficult than making steel.

...

When steel mills can mass-produce this versatile cast iron, the demand for steel in the transnational country suddenly becomes much smaller, which also relieves a lot of pressure on the steel mills. After all, no matter from any aspect, the cost of steelmaking

All are the highest.

In this way, the product line can be easily adjusted. A series of steel processing projects that were originally planned to be implemented can now be suspended. The steel mills only need to further improve the steel bar and steel wire production lines: these are the only two materials that cannot be used.

Alternative varieties.

As for the future, the Industrial Party still has no ambitions in terms of steel: tinplate and galvanized iron are the highest technological trees to climb in the next three years.

Tinplate can be used to make cans, and galvanized iron sheet, also called tinplate, is an excellent container material, such as tin buckets and chimneys.

Both materials require the same base material, which is low-carbon thin steel plate. To produce thin steel plates with a thickness of only about 0.2mm, the current steel mills are beyond their capabilities. This will take some time to accumulate.

Yes - the cold-rolled steel production line is huge in size and high in technology, and the kiln area cannot produce it on its own.

Fortunately, a certain force's demand for tinplate will not be urgent for a while.

Cans are mainly used for offense: when soldiers are in the field without logistics, cans are a big killer.

However, if you look at the overall situation, you will find that all the current battles of the crossing forces are carried out in the coastal areas. Whether it is naval battles or land battles, the soldiers under the "guerrilla generals" who have entered the Ming Dynasty system can get sufficient logistical supplies on the battlefield.

, there will not be a scene like a lone army running thousands of miles deep, so we can talk about canned goods slowly first.

...The product structure of steel plants is like this. For a long time in the future, the production share of cast iron, ductile iron and steel will be fixed at: 30:20. Even if the steel plant expands in the future, this

The proportions are also difficult to change.

After inspecting the core steel mill and machinery factory in the entire kiln area, Yao Zhesheng and Zou Guoqing parted ways. Yao Zhesheng continued to work as an inspection officer in the power plant, while Zou Guoqing went back to work - Huang

He has a place in the office of the big boss on the second floor of the city.

...

With a "wow" sound, Yu Sibao emerged from the clear and transparent sea water. Let the sea water flow all over his face, the young man did not bother to wipe it, but screamed and waved his hands on the sea, not far away

A fishing boat swam away.

When he came to the fishing boat, Yu Sibao first threw the things in his hands onto the boat, and then jumped onto the side of the boat along a hanging hemp rope like a civet cat.

Several fishermen on the boat were talking to each other and studying the things that the young man threw up. A tall, red-faced man in his 40s was holding a coarse cloth robe. As soon as the young man jumped on the boat, he hurriedly used it to

The robe wrapped around his son's naked body: "Be careful, don't catch a cold."

This man is Yu Sibao's biological father, named Yu Chengde.

The Yu family is an ordinary fisherman family along the coast of Putian, and Yu Chengde is the owner of the broken fishing boat at his feet. This fishing boat named Qingyu has 200 pieces of material, and the fishermen on the boat are all from the same fishing village.

The location where the Herring was parked at the moment was exactly on the shore of Cormorant Island where the task force fought against Zheng Zhilong's fleet that day.

What Yu Sibao threw onto the boat was a military spur produced by the Yao District Machinery Factory. This military spur was the earliest crude steel military spur produced by the machinery factory. The style was an imitation of the US military M9 military spur, but it was lengthened on the original basis.

The blade also has no back teeth.

The one holding a rusty sword and trying the knife on a salted fish was Yu Sibao's cousin: Yu Chushui. After seeing Sibao boarding the boat, Yu Chushui shouted to him excitedly: "Sibao."

, this is a precious sword!”

While talking, Yu Chushui sharply sliced ​​the salted fish hanging on the rope, and the salted fish with thick calves was broken in response.

"Dad, the ship below must be a merchant ship, and there are rich people on board!" Yu Sibao didn't bother to talk to his cousin at this time, and saw him excitedly stretching out a hand from his coarse robe, the palm of his hand

Inside is a silver ingot weighing about five ounces, which has been oxidized into black by sea water.

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