The boiling roasting technology also has an obvious shortcoming, that is, it pollutes a lot, especially with a lot of dust. However, Hu Weidong cleverly recycled and reused it all, which not only reduced the pollution, but also increased the output. Therefore, the concept of recycling has been widely used. China Enlightenment. With the help of this new technology, and the fact that Hu Weidong did not blindly pursue the profit margin of products from the perspective of war preparation, he mainly invested in the construction of small and medium-sized sulfuric acid plants that have high production costs but can quickly build production capacity, making the Soviet Area in Western Henan The output of sulfuric acid increased rapidly, to more than 30,000 tons in 1936 (the highest annual output during the Republic of China was 180,000 tons, and before Fan Xudong's Yongli Ning Factory was put into operation in 1937, it was only a few tens of thousands of tons). By 37 When the Anti-Japanese War broke out in 2006, the annual production capacity exceeded 150,000 tons, and it was all underground...

But sulfuric acid is easy to handle, but synthetic ammonia is much more troublesome. The main reason is that the required pressure vessels and thermocouples for measuring high temperatures have to be imported. Without synthetic ammonia as a raw material, independent production of nitric acid is impossible, not to mention the required equipment for nitric acid production. Catalyst platinum-rhodium alloy is also difficult to buy in China.

But what is more troublesome is the steel and electric power industry. Alloy steel is easier to solve. The Red Army has collected some rare metals such as tungsten in the past few months. Even if the production of alloy steel is not enough after the increase in alloy steel production, it can also be used to collect it from the aircraft. Jiangxi has been continuously transported to Jiangxi, and the amount is not much anyway, and the metal antimony, which is basically not produced in the north, can also be easily dealt with. In addition to the collection before the 15th Red Army, the Guizhou warlord once issued a large number of antimony coins, and sent people to buy them in large quantities. That's it. In comparison, ordinary steel is more troublesome, because the demand is much larger, which cannot be met by robbing alone, and it is unlikely that the underground organizations in the white area will import so much.

In view of this, Hu Weidong also took into account that there happened to be iron ore with large reserves in western Henan (later proven reserves were more than 100 million tons, and the grade was considered to be rich in iron ore in China), so he decided to build a large steel plant in the Soviet area. Although because of the After all, the underground space cannot be compared with the ground, and these steel plants cannot be built too big. However, because of the adoption of the coking and blast furnace gas recycling technology and the oxygen top-blown converter steelmaking method that are ahead of the times, coking-making is realized. Iron - a one-stop process for steelmaking, the production efficiency has doubled. By 1937, the steel output in the Soviet area in western Henan had exceeded 50,000 tons, accounting for more than half of the total steel output in China. However, due to the lack of cryogenic methods in the Soviet area Industrial oxygen generators that produce large amounts of oxygen often have to replace oxygen with high-pressure air, which seriously affects the quality of steel, but there is nothing we can do about it...

Electricity is not as important as steel, but it is even more difficult to significantly increase power generation, because there are no generators produced in China at all, and most of the generators sold to China from foreign countries are very small power models, and during the Republic of China The industry in Henan Province is extremely backward. It is estimated that the combined power generation capacity of other areas in Henan is not as good as that of the Gongxian Arsenal. Even if you go out to grab it, you won't be able to grab many generators, so you can only buy them abroad. But you have been forced to follow the Red Fifteenth Five-Year Plan Wang Guosong, dean of the Department of Electrical Engineering of National Zhejiang University, who was traveling all the way, learned that Hu Weidong was going to build a power plant. His eyes suddenly lit up and he declared on the spot that as long as Hu Weidong could provide necessary materials such as copper wires and magnets, he and his students could build it. When a usable generator came out, Hu Weidong immediately agreed. But a month later when he saw the "generator" with an installed capacity of less than 50 kilowatts, Hu Weidong was speechless for a while, but he also knew that this was not because Wang Guosong was incompetent, but actually This is due to the extreme shortage of equipment and materials, as well as the serious lack of skilled workers in this area. It seems that the introduction-copycat-self-research approach is more feasible.

It is also worth mentioning that the permanent magnet generator used by Wang Guosong suddenly reminded Hu Weidong of the rare earth permanent magnet materials of later generations, especially the "King of Permanent Magnets" neodymium iron boron magnetic materials. If this ultra-era permanent magnet

When the material is used in generators, even permanent magnet generators, which are difficult to increase in power, can exceed 3,000 kilowatts. At this time, the advantages of permanent magnet generators in small size, low cost, and rapid production are highlighted, and they can be greatly

Accelerate China's electrification process, but considering that no one in China has even developed rare earth mines, Hu Weidong feels that the matter should be postponed. "It is not easy to build a complete industrial system from scratch!"...

In addition, Hu Weidong actually wanted to start up the oil chemical industry, coal chemical industry and other industrial sectors, but considering the current conditions, he had no choice but to put it aside for the time being. Instead, he used local resources to develop phosphate fertilizers, potassium fertilizers, etc., which greatly benefited people's livelihood.

As for the civilian industry, as for the military industry, we must first realize the complete localization of the production of guns and ammunition.

As early as the first day after occupying the Gongxian Arsenal, Hu Weidong discovered that the product structure of the factory was very unreasonable. Not to mention anything else, it only produced more than 40,000 steel shells (mortar shells) per month for mountain guns, field guns and other types of howitzers.

(The cartridge case is cast iron), how much labor is required, how much metal and explosives are consumed? However, the Gongxian Arsenal cannot produce barrel artillery (three calibers of 75mm, 105mm and 150mm.) for firing these shells. Isn’t this a waste?

?

Of course, Chiang Kai-shek may have made this arrangement out of consideration for a national chess game, but once war breaks out with Japan, the production model of multiple arsenals scattered across the country, each responsible for a part of the product, will expose huge shortcomings, even if only one is taken over by the Japanese.

If they are occupied or destroyed by people, there will be a huge gap in the supply of weapons and ammunition, and it will be impossible to find replacements in a short time (so Chiang Kai-shek concentrated all the arsenals in Chongqing before and after the war, but the transportation costs and losses on the road are not

A small number, for example, half of the one in Guangxi was destroyed.). For the Eighth Red Army Corps, which has only one arsenal, this product structure is even more fucked up. Take the 105mm grenade as an example, the Eighth Red Army Army now has

There are no 105mm cannons, and the monthly production capacity of 14,000 rounds of artillery shells is of no use at all...

In addition, many of the products of Gongxian Arsenal also have problems. For example, Hu Weidong actually saw the names of several poisonous gases such as phosgene in the production plan of the "new factory". Well, just think that Chiang Kai-shek was just preparing for a rainy day, and these poisonous gases were prepared for use.

It was used to deal with the Japanese army rather than our compatriots, but how effective would these World War I-era poison gases be against the Japanese soldiers equipped with gas masks? Besides, with the equipment level and ammunition supply of the national army, instead of wasting production capacity to produce poison gas

, it’s really better to go all out to produce conventional guns and ammunition...

..

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