Lin Gao Qiming

Chapter 1006 Grenade Test
In terms of manufacturing quality, the quality of fuzes made by naturalized migrant workers is no worse than those made by veterans, and the difference in firing rate is so small that it can be ignored.It seems that Lin Shenhe's well-simplified fuze structure has ensured that the naturalized migrant workers with low technical level can produce qualified products.

As for safety, it has been tested that falling from a height of 12 meters and hitting the ground without pulling out the safety pin can ensure that it will not accidentally catch fire.

However, the ordnance engineering team is not simply satisfied with this-in addition to meeting the functional requirements of any industrial product, it also needs to control material costs and organize mass production.As a consumable, the fuze should be as cheap as possible and easy to produce.Although the phosphor bronze spring can be produced by itself, it is a kind of "advanced precision parts" in Lingao's industrial system, which belongs to the "secondary control materials" of the planning institute.

At present, phosphor bronze springs are mainly used in more sophisticated industrial equipment, such as the timers and meters that Dr. Chung has been developing with all his heart-it is very expensive to produce.

It is best to replace it with relatively inferior and easily available materials.Lin Shenhe thought twice, found Zhan Wuya, and asked him if he could heat-treat the wrought iron wire?

"Of course, but what do you heat-treat the wrought iron wire for?" Zhan Wuya was very surprised.

"For springs—for shell fuzes."

Zhan Wuya glanced at him in disbelief: the spring used in the fuze of the cannonball is an old-fashioned obstacle, but now Lin Shenhe actually came and told him to use heat-treated wrought iron wire to make it!
The Industrial and Energy Commission produces different numbers of wrought iron wires in accordance with the standards of the old time and space, and the more advanced ones are also galvanized—wrought iron wires are widely used in the industrial and agricultural production of the Senate, and the telegraphs of Lingao Telecom are also laid with wrought iron wires .

Lin Shenhe took out the structural model of the fuze—this is an isometric section model made by the people in the machinery factory he commissioned, and explained the specific working conditions and principles in detail. Zhan Wuya studied it for a long time, and finally agreed to use iron wire try it.

They chose 20 gauge galvanized wrought iron wire.The cooked iron wire is rolled into a spring by a special spring rolling machine, and then heat-treated.

Then Lin Shenhe used testing equipment to conduct a comparative test on the wrought iron wire spring and the phosphor bronze spring. He also knew that it was impossible for the two springs to have the same performance.The result certainly did not surprise him.

"It seems irreplaceable." Zhan Wuya said.

"Try to launch it on a cannon." Lin Shenhe didn't give up.

The fuze projectile installed with wrought iron wire spring has been successfully fired with a strong charge on the mortar, and it is no worse than the phosphor bronze spring in terms of safety and firing rate.However, the shooting effect on the 70mm cannon was not good, and the spring failed many times-the test of the fuze for a high-pressure rifled gun such as the cannon was much harsher.

Lin Shenhe was satisfied with all the test results and decided to carry out a formal charge live ammunition shooting test.

The black powder columns sent to dry have all dried naturally.The last process is to coat the surface of the powder column with alcohol shellac paint with a concentration of *% ~ *%.It can prevent moisture and prevent cracking and deformation.

Imported from India and Vietnam, shellac is the secretion of the lac insect.It has a wide range of uses in the industrial field. For industrial systems such as Lingao that lack chemical products, the importance of shellac as a natural resin is even more significant.

The weapon enthusiasts in the mechanical department began to load the shells.The high-compression black powder column can no longer simply be detonated with a detonator, and an igniter-a detonator must be used.

Making detonators is a rather dangerous business.Technically, there is no difficulty.The process is to roll kraft paper into a tube, then press the priming charge into the tube, and finally seal it.In the past, in order to reduce the danger, the military industry department seldom manufactured detonators. Explosive weapons based on black powder generally did not need detonators, and only a small amount of detonators were manufactured when Dynamite and ammonium nitrate explosives were used.

There are a small number of detonator casings and safety caps in the warehouse of the First Research Center of the Specialty Chemicals Consortium.The shell of the detonator is made of kraft paper roll.Both inside and outside are painted with [-]% alcohol shellac to resist moisture.Lin Shenhe personally selected twenty detonators as experimental shells.

The commonly used detonators are divided into single type and double type. The single type is only filled with thunderbolt, and the upper part of the double type is filled with thunderbolt, and the lower part is filled with booster-generally TNT or RDX.

Because the chemical industry department can’t make TNT, all the detonators produced by the military industry department in the past are single-type detonators-this time, in order to ensure the effectiveness of the explosion, Bai Yu suggested to make double-type detonators, but Lin Shenhe objected-no matter how powerful they are Can't change TNT either,
"You can use the ammonium nitrate explosives in stock. Besides, don't we have the explosives that Lando brought?"

"It doesn't make sense—we don't have the capacity to mass-produce any of them yet. It should be tested in accordance with the conditions that can be mass-produced in industry."

It was eventually decided to continue with the manufacture of single detonators.In the detonator workshop, Lin Shenhe carefully put the thunder mercury into the shell several times, and then gently compacted it with a press—to ensure safety, he operated behind a thick steel plate. Wearing a blast helmet.Thunderbolt is extremely sensitive and can easily cause an explosion during the pressing process.

After the thunderbolt was pressed, he picked up a hard hat made of galvanized iron—with a thin piece of silk inside it, which was mounted on the tube shell.Turn the handle of the press.

According to the technical requirements, the press presses the safety cap into the shell according to the force of *~*kg per square centimeter.Lin Shenhe checked whether the combination was complete, and then used a brush to brush off the powder scattered on the tube shell bit by bit, and carefully collected the scattered thunder mercury into the waste tank.Finally, dot the bottom of the shellac with alcohol shellac, and a detonator is made.

Then, another detonator test was done at the test site.The new detonators used in the shells were fuzed, and firing tests were carried out in accordance with actual combat requirements to ensure that the firing pin of the fuze could effectively fire the detonators.

The first firing was unsuccessful - the position of the firing needle was not accurate, Jiang Ye adjusted it on the spot, and the second time it succeeded immediately. After several consecutive tests, the detonator was fired accurately every time.

Lin Shenhe nodded: "It can be assembled now." He signed the assembly task list and officially ordered the assembly of the grenade with the new fuze.

It was finally time for the new fuze to be officially unveiled. The 70mm rifled gun borrowed last time was still on the shooting range. Lin Shenhe borrowed another 24-pound smoothbore howitzer—there was no mortar, and the mortar was not very useful. Use it instead for now.

"Can cone-shaped projectiles also be fired with smoothbore guns?" Zhan Wuya asked.

"Of course." Lin Shenhe said, "There is no need for mortars to fire spherical shells."

Simple tracks have been laid on the shooting range, and 40 rounds of newly produced grenades for two types of artillery have been transported by rail cars: half of the phosphor bronze spring and half of the No. 20 wrought iron spring.

"A shell of the 24-pound howitzer is loaded in one shot!" Lin Shenhe directed from the bunker with a big iron horn.A gun crew of the army teaching team responsible for artillery firing quickly opened the rattan shell box, took out the shell, and installed the fuze.A gunner loads a silk charge from the muzzle, and the loader then loads the shell from the muzzle.

The gunner stuffed the ignition tube into the ignition port at the tail, and hung the pull rope-in ​​order to ensure safety, the pull match was very long and extended to the bunker 20 meters away.

With a whistle, all the gunners ran to the bunker and jumped into it.Then, the siren of warning that live ammunition was about to be fired echoed in the sky.

"Launch!" Lin Shenhe roared, then quickly retracted himself into the bunker, and put his eyes on the newly made binocular periscope in the optical workshop.

The gunner yanked the matchlock sharply. The 24-pound howitzer let out a roar, and the heavy gun body retreated backwards, emitting thick white smoke.From the periscope, I can see the trajectory drawn by the shells in the air-the muzzle velocity of the muzzle is still a bit low due to the combination of smoothbore guns and maroon powder.

The shell accurately landed on the intended landing area, the flame flashed, and it exploded!
The power of the explosion was much stronger than the original spherical black gunpowder grenade even by visual inspection—the explosion after the shell hit the ground only raised a burst of black smoke.There is also less dirt kicked up.

"Let's go and have a look." Lin Shenhe hurriedly climbed out of the bunker, climbed into the agricultural vehicle with Jiang Ye, Wang Ruixiang and several apprentices from the military industry department, and stumbled along the dirt road to the landing area.

The 24-pound grenade left a half-person-deep crater in the impact area.There was still curling smoke, and the air was filled with the pungent smell of black powder.Lin Shenhe squatted down and fiddled with the soil beside the bomb crater. Several students who were interns at the No. [-] Research Institute also quickly dispersed, searching the surrounding area for shell fragments and marking them on the map.

"Look, the charge is more powerful, and the shells are more broken than before." He pointed to the shrapnel he picked up.

Not only did the fragments fly farther than in the past, but the degree of fragmentation was also greater than that of spherical bullets.The spherical grenade in the past had more than 20 large fragments after the explosion, and some even burst into seven or eight fragments, which could not form dense fragments to kill.Even the highest-charged mortar shells failed to produce more fragments.

Now, just a simple search has found more than 70 shrapnel of various sizes within five meters around the crater.Lin Shenhe pointed out that if the projectile material can be further improved and the measures of prefabricating fragments can be adopted, the fragmentation effect after the shell explodes will be much better.

All twenty shots of the A-fuze shell fitted with a phosphor bronze spring were successful on both guns, and the tests of firing the B-fuze shell were all successful on the 24-pound smoothbore gun. On the third fire of the 70mm rifled cannon , Everyone in the bunker felt a flash of fire, and there was a loud muffled sound on the ground, and the ground shook slightly—the shell exploded in the barrel.

　The technical details of the fuze come from Lin Shenhe's own tests.Because of the sensitive content involved, some details will not be written.Just take a look at it.

　　
　
(End of this chapter)