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War is a comparison of overall strength, not just the size of the population and the size of the country.

As an agrarian country, China will of course fall behind when it comes to confronting small Japan, which has completed industrialization.

In the Yongcheng base area, Yang Tianfeng hopes to form a highly industrialized development model in the local area. With the continuous expansion of arsenals, the popularization of workshop-type processing and manufacturing, and the support of local ironmaking and coking, the number of industrial population has gradually caught up with the agricultural population.

In order to use the limited land and the dwindling agricultural population to feed the military and civilians in the base areas, it is necessary to popularize the use of soil chemical fertilizers, humic acid, and scientific planting methods. As long as grain production can be increased, Yang Tianfeng will be able to expand the army more and support the training of industrial workers.

And the tall crop grows, and it is also called the green yarn tent. The change in circumstances has brought guerrilla warfare into its prime. The Japanese devil's sweep has just gone down, and it usually doesn't go back in this season.

This gave Yang Tianfeng nearly two months to expand the troops and step up training; On the one hand, under the command of Chief of Staff Liang Moqing and other officers, they targeted the countryside and carried out large-scale guerrilla infiltration. He devoted himself to military production and began to stock up on ammunition in preparation for the big war two months later.

Yang Tianfeng didn't care about the weapons and ammunition that had been finalized and produced, but just asked Ou Hantao to continue to recruit workers and expand production; His energies were mainly focused on the imitation of the 37-mm anti-aircraft gun, the modification of the aircraft, the improvement of the Tu Wei chainsaw, as well as the pressing of copper-clad steel sheets and the in-manufacture of bullet shell mills.

At this time, Yang Tianfeng really couldn't wait to know how to doppelganger techniques. Fortunately, the telephone connection made it easy for him to give instructions, saving him a lot of time and effort.

In the process of mutual exchange and learning, many new processes and new technologies have been adopted by the factories and enterprises in the rear, and at the same time, the technical level and product quality of the factories in the base area have also been improved.

At the beginning of July, the production lines of the two rolling mills were finally completed, and the bullets made of copper-clad steel plate were tested for thousands of rounds to meet the needs of the battle.

Compared with the pure copper bullet shell, the steel shell bullet has greater wear on the rifling, and in order to facilitate the shelling, it should also be made into a large taper shape with a bottom edge as much as possible. Therefore, Yang Tianfeng spent great efforts to develop copper-clad steel shell bombs to minimize the adverse effects. And this is only the first step, when the quality of the steel can continue to improve, he is also ready to produce painted steel shells.

The copper-clad steel shell bullet saves more than 80% of the copper material compared with the pure copper bullet, that is to say, recycling a bullet case, melting it to produce copper-clad steel, and then producing and manufacturing bullets, one can become four to five.

For the three verticals, this means that the ammunition is more abundant. Although the Tu Wei chainsaw (MG42) is not up to the German stamping level, and some parts still need to be processed by lathes, it is not more expensive than the Czech type in terms of current manufacturing cost and time.

The arsenal in the rear can manufacture rifles, Czech-made, Makqin heavy machine guns, and mortars, while the arsenals in the base areas have caught up with and surpassed in terms of technology in addition to scale and manpower. Of course, the technical level of the rear arsenals is also constantly improving, and the work productivity must also be greatly improved under the urgency of wartime needs.

After the establishment of a special production line, the Tu Wei chainsaw can now reach 10 per day, Yang Tianfeng equipped most of it to the Guo detachment (also known as the directly subordinate guard regiment) and the Jiang detachment, and also organized an emergency training class for machine gun shooters, and constantly transferred equipment and materials to Luyi to prepare for the big battle on the Western Front.

Before deciding to equip the troops with the slaughtering chainsaw, Ou Hantao, director of the arsenal, told Yang Tianfeng that if this kind of machine gun was captured and copied by the devils, the consequences would be very serious.

Yang Tianfeng didn't explain much about this layman's concern, but just smiled and asked a question, "Is the design of the gun based on the bullet, or is the original structure of the gun used to match the bullet?" ”

In fact, there is not only one person who has made such a mistake. At the end of World War II, Lao Mei, who hated and feared MG42, had a pragmatic reverse thinking attitude, naively thinking that drawing a gourd and matching it with his own .30-06 bullets could create a machine gun more powerful than MG42, and was tentatively named T24 general-purpose machine gun (the prototype weapon was codenamed T, and was changed to M after it was officially put into service), and was carried out by SaginawsteeringGear.

It must be said that this idea is still a bit naïve, the .30-06 bullet has a charge of 0.34cm &sup3 more than the 7.92mm Mauser bullet; , maybe you don't think it's much, but without changing the original structure and design, this extra star and a half of gunpowder makes the T24 machine gun crazier than the North American Mustang in the case of fully automatic fire. In the end, the U.S. military was sensible and wisely shelved the plan as if it had never happened.

Every industrialized country has established its own military industrial system in accordance with its own concept of war and industrial characteristics, and has formed a standardized weapon, a unified ammunition, and a serialized system, so as to provide effective logistical support.

Therefore, there is no shortage of excellent weapons in various countries. For example, Czech-made light machine guns, MP40 submachine guns, MG42 general-purpose machine guns, Deggalev light machine guns, Bobosha submachine guns, etc., but there is no army that "learns from others' strengths", except for China's use of "made in all countries".

Of course, Yang Tianfeng does not rule out that the slaughter chainsaw was seized by the devils, nor does it rule out that the devils will imitate it, but this possibility is very small, and there is no need to worry about this. In particular, the Japanese army had begun to equip the Type 96 light machine gun with 77 mm ammunition, and believed that the Type 92 heavy machine gun had excellent performance, excellent maintenance, and considerable lethality, so it was even more unlikely that it would produce another bullet and have to be reequipped on a large scale.

The reason why Yang Tianfeng was eager to equip the Slaughter Chainsaw was that the Makqin water-cooled heavy machine gun in the army was too cumbersome, and the machine gun bunker was easy to be found and destroyed, and the Japanese Type 92 heavy machine gun could not be suppressed; Although the Czech-made is good, it has a magazine of only 20 rounds, and compared with the Japanese Type 96 light machine gun, it is also inferior in sustained firepower.

However, the slaughtering chainsaw has a long range, a fast rate of fire, strong lethality, and can be used both lightly and heavily, and will indeed become a reliable suppressive firepower of the three verticals. As for the disadvantage of large ammunition consumption, drawing on historical experience, Yang Tianfeng taught the method of combining three-round burst fire and strafing in the machine gunner's emergency training class, and worked overtime to produce copper-clad cartridge shells.

The production and manufacture of new weapons and ammunition undoubtedly means that the arsenal has made a breakthrough, but an even greater breakthrough has begun the process of self-made machinery and equipment. The successful manufacturing of stamping machines, plate rolling mills, and shell rolling mills has undoubtedly increased the output by several levels.

The purchase of precision lathes, the improvement of production technology, and the successful preparation of fierce gunpowder gave birth to other weapons, to be precise, additional ammunition.

The 12.7mm deflagration warhead, no detonator, only equipped with explosives, the basic structure is composed of warhead shell, lead sleeve, steel sleeve, bullet core, incendiary agent, explosives, and combustibles.

When the warhead penetrates the thin steel plate (equivalent to the skin of an aircraft) at a certain speed, on the one hand, the steel plate is deformed and damaged, and on the other hand, the front end of the warhead is deformed after being squeezed, and the incendiary agent and explosive are squeezed at the same time.

The explosives are ignited by the impact to form hot spots, which detonate the explosives, and the explosion of the explosives is excited from these points and expands until all the explosives explode. If the impact of the warhead causes the incendiary to burn first, the incendiary flame can also turn the explosive from combustion to detonation.

It can be seen that the production and manufacture of piercing and detonation warheads are relatively complicated, and they are not equipped for general military use, but are specially equipped for air defense weapons or fighter aircraft.

The successful development and production of 12.7mm piercing bombs was also the world's leading at that time. Arms experts at the time had calculated that .50 mm bullets, even if they were filled with explosives, would not be powerful enough to destroy the armor, so they believed that only artillery shells over 20 mm were suitable for blasting shells.

The reason is simple, the miniaturization of the letter tube is a problem. The United States has experimented with a variety of 12.7*99 armor-piercing explosive bombs, but none of them are up to par in terms of fuses, so it has not equipped the Browning M2 with armor-piercing explosive bombs. The assertion of the British that only warheads of more than 20 mm are suitable for equipping explosive shells is also associated with this.

The successful preparation of fierce gunpowder easily solved this problem. The most effective way to effectively destroy enemy fighter crews, engines, and fuel tanks hiding behind defensive armor is to use explosive shells or even armor-piercing blasting shells.

The other type of ammunition is mortar incendiary shells, which are divided into 82 and 120 types. Incendiary bombs, naturally, are filled with less explosives, and are additionally filled with incendiary agents. But there is still a gap between this incendiary bomb and the coagulation ****** that has not yet come out.

Although humans have long used fire as a weapon and used it on the battlefield, the liquid combustible agent used (such as the fuel for flamethrowers) has a major problem, this substance is easy to splash and difficult to adhere, and it is difficult to achieve the purpose of concentrated killing. Later, scientists found that switching to colloidal gasoline could improve the range and effectiveness of the flamethrower, but it was difficult to manufacture colloidal gasoline using natural rubber, which is in high demand and expensive.

It was not until the end of World War II that a group of chemists in the United States developed a cheap gasoline viscous and further proposed a formula for mixing the viscous with gasoline, so that the mixture could burn at a specified rate and adhere to the object. Solidification ****** was born and was used extensively in later wars. Little Japan, on the other hand, has become the first to "benefit".

Of course, Yang Tianfeng knew the composition of the gasoline viscosity agent, as well as the formula for the mixing ratio. But based on the actual conditions, he can't make it right away, and he has to wait for the coal chemical plant to make a further breakthrough to produce the chemicals he needs.

Despite this, he did everything possible to make the filled gasoline viscous, or gelled gasoline (napalm-like). They are a mixture of gasoline, kerosene, lye, grease, rosin, soap, paraffin, sugar, and animal blood, and can stick to most flat surfaces and burn strongly, making fires almost impossible to extinguish. (To be continued.) )