"Really? That's great. Qin Feng said: "So you came here this time, are you planning to order another batch?" ”

"Mr. Qin, we are planning to order another batch of gas canisters and those pipes, but only those are not enough, we found in use that the large fence made of these gas canisters is inconvenient to carry, and it is also complicated to use, is there a suitable way to make it easier for us to use?"

"Of course there is a way." Qin Feng said: "Let's go, let's go to see the Great Wall again, and when we come to the east, then we have to go to the Great Wall, if you don't go to the Great Wall, you are not a hero." ”

"Okay." Ammar certainly knew that going to the Great Wall would definitely see something he wanted to see.

Moreover, this time it was more direct, when Santana drove to the bottom of the wild Great Wall, there was no need to climb up at all, and at the foot of the Great Wall, a vehicle with a special shape appeared.

The front wheels are small, the rear wheels are large, the open-air convertible cab looks like a tractor, next to the red brand new front cover, the handwriting of Dongfanghong-150 is dancing with dragons and phoenixes, two small characters in the front China, two small characters in the back, and a plastic belt wrapped around the steering wheel. However, there are more shelves and hydraulic cylinders on both sides of this tractor, and through these structures, it extends to the front, and there is an iron pipe in front, which is thick and long.

When he saw the combination, Amar felt his heart beat faster.

This, this is really a brain-opening idea!

Tractors, all over the world! With a simple modification, plus hydraulic cylinders and brackets, it can be turned into a self-propelled device that fires gas canisters!

Usually do not install these accessories, just use them as an ordinary tractor, and when needed, you can become a self-propelled gun, drive it out and fire, and run away after firing! Out of nowhere, the enemy can't find it at all!

Ammar's heart was pounding.

"We realized that it was a lot of work to move gas tanks, so we made some improvements on the tractor and made this automatic gas tank truck, and now, I'm going to show you how."

Qin Feng said, walked to the tractor, and pulled out the start key from under the steering wheel: crank handle.

Shaking a tractor requires skill, if you don't know how to do it, it's easy to slap your face and arms and front teeth, and if you know, it will be very simple.

Press the decompression with the left hand, turn the rocker with the right hand, the speed is getting faster and faster, and when the speed is enough, and the rocker is shaken to the bottom, release the decompression handle, and the right hand is easily lifted up, and the sound of sudden bursts will sound, and the tractor will start successfully.

What if it doesn't start?

At this time, the shaker will be reversed, don't compete with the shaker, the arm can't resist the thigh, the arm can't resist the single-cylinder diesel engine, don't look at the current tractor only 15 horsepower, on torque, the old liberation of the 90 horsepower gasoline engine can not compare.

So what to do? Of course, it is pumped outward, as long as it is pumped, it can be separated from the shaft of the diesel engine, and it will naturally not be rebounded.

Qin Feng skillfully and chicly decompressed with his left hand, turned the rocker with his right hand, and did not move! No matter how hard I tried, I haven't moved!

"Here, I'll help." Amar is a down-to-earth expert, and naturally he has also shaken the engine, he gave him a hand, and the crank was finally able to turn, whirl...

Wait, something is wrong, why is this tractor moving? Oh no, damn it, who drove the tractor over? Why don't you pick up the gap?

Tractor parking does not pick up the neutral gear, that is an old tradition, veterans will be in the gear after the ignition, downhill to hang the reverse gear, uphill to hang a gear, so as to prevent the slope slippery, after all, the tractor this thing does not have a handbrake, if there is often not work.

Qin Feng didn't know, he hurriedly loosened the rocker, loosened the decompression, where did he think that the speed was enough, after letting go of his hand, black smoke suddenly came out of the exhaust pipe of the tractor, and it actually started!

Oops, watching a show turn into an accident! If the tractor falls into the ditch, you can buy it again, don't bump into your precious Santana!

At this moment, the assistant brought by Amar made a leap, skillfully jumped on the tractor, stepped on the clutch, stepped on the brakes, picked the steering wheel, picked up the neutral gear, and after a fierce operation, the tractor stopped.

Qin Feng wiped the sweat on his forehead with his cuffs: "That, it was a wrong operation just now, don't learn from me, next, let's show the process of transporting gas canisters by this tractor." Under the steering wheel, you can see that there are several operating handles. ”

When there is no electronic control technology, a hydraulic cylinder corresponds to an operating lever, which can only be installed in the front, on the control console under the steering wheel, so that it is easy to operate.

The assistant Ammar brought came down and replaced Qin Feng up.

"The first operating handle controls the big arm, and the second operating handle controls the small arm, and the two handles are combined to operate the thick steel pipe in front of it to move up and down." Qin Feng said, and began to operate the handle, the technique was stiff, and he was unfamiliar with it at first glance.

"The third handle is to operate this thick steel pipe for pitching operation, and when it is flat, it is easy to put the gas tank in and then turn it to the right angle, whether it is transporting or doing other things."

"Can we try?" Amar asked.

"Of course."

Ammar's assistant went up, and after some operation, the big arm and small arm were retracted, and the steel pipe was rotated, almost in one go, and a set of processes was completed in a blink of an eye.

"It seems that you are very familiar with its operation, so I am relieved." Qin Feng said, "What do you think of this device? ”

"It's a good device!" Amar nodded: "Mr. Qin, you are so creative, I don't know how much this device sells?" ”

"A set of $50,000, twenty sets of sales, if you buy forty sets at once, you can come with a design drawing for the modification." Qin Feng said.

It's not very technical, it's like a fence, you just need to look at it a few times and make it, so it's almost a one-time sale, selling forty sets, and making two million dollars.

Dongfanghong-150, that is, a 15-horsepower tractor, the price will not exceed 10,000 yuan, and the full set of modifications will definitely only be 20,000 yuan.

These tractors are definitely too expensive if bought separately, but what if they come with a modified blueprint?

It's far better to explore it yourself than to bring a design drawing! Two million to buy forty sets of self-contained gas canister handling artifacts, plus the modification design drawings, worth!

"Okay, let's buy it!" Amar said: "Mr. Qin, however, the range of this gas canister is still a little close, if only it could be farther away." ”

"Far? Naturally, there are also far schemes. Qin Feng said: "I still have a batch of fire trucks on hand, a total of 50 units, 100,000 US dollars each, all of them will be sold to you!" ”

The fire-fighting equipment factory still has fifty old liberation chassis fire trucks, take this opportunity to sell all these fire trucks to Ammar!

Fire engine? Amar was a little puzzled, Mr. Qin, we set the fire, but we don't care about extinguishing the fire, you sell us the fire truck used to extinguish the fire, what's going on?

Qin Feng's face showed a meaningful smile: "Ammar, fire trucks are divided into many types, in addition to the common water spray, foam spray, dry powder spray, and carbon dioxide fire trucks, some fire trucks will even make carbon dioxide into hollow bombs and use rockets to shoot out." Stop the tractor, it's too noisy, let's go back to the car and talk slowly. ”

The most common fire truck is the one that sprays water, with a large water tank and a high-pressure water pump on the car to spray the water out, after all, using water to extinguish the fire is the most common way.

However, this is not the case for all cases, for example, if a power station or transformer catches fire, do you dare to spray it with water?

The answer is dare, at this time you have to have an experienced firefighter, with a spray gun in your hand, whoosh, whoosh, whoosh, one by one, and when the first strand reaches the flame, it has to be separated from the back, so that the current will not be transmitted.

However, this is still too dangerous after all, so there is also a spray of foam and dry powder to extinguish the fire, which is safer, but there is also a problem, this has something to do with God, what if the place to extinguish the fire happens to be a headwind? What is squirted out may be blown over.

Why don't you stand in a downwind place? It depends on the local environment, what if the fire platform is not in a downwind place? I can't help it.

At this time, firefighting rockets are needed.

Although a firefighting rocket is also a rocket, it belongs to civilian equipment, and the warhead of its rocket is a fire extinguishing agent, such as carbon dioxide. The biggest feature of fire rockets is that the fire is fierce, swishing, a dozen is a large area, these rockets fly over, instantly can cover the entire fire field, a huge area of forest fire quickly extinguished.

Long range, means it can be far away from the fire, relatively safe, even if the range is only two kilometers, it is much safer than ordinary fire trucks, the rate of fire is fierce, representing a large area to extinguish the flames, at the same time, after the launch, it is also simple to reload, so it can be said that this fire rocket is the most efficient way to extinguish fire.

If you want to use this device in a dense city, can you use this device?

Of course! In later generations, this kind of fire extinguishing bomb can also have a precision guidance device on it, pointing where to hit it, is it awesome or not?

The tractor was thrown in place, as if no one cared about it, Qin Feng was in the car and introduced this device to Ammar, and Ammar's eyes widened when he heard it.

"Mr. Qin, can we move these gas canister fences up?"

Amar subconsciously thought that if this was modified, it would be a self-propelled rocket launcher, which could fit a ten-tube or twenty-tube one, and after it was hit, the entire neighborhood would be finished.

Qin Feng shook his head: "You just said that you dislike the distance of this gas tank fence is too close, and you want a remote device, although this fire truck is called the way to launch rockets, in fact, it is generally not used for rocket propulsion, but with compressed air propulsion, the biggest advantage of this method is that it can be launched all at once, extinguishing fires, and the emphasis is on efficiency." ”

Fire-fighting rocket artillery does use rockets, when it is launched, there is smoke behind it, and flames will be sprayed behind the launch tube, and it is better to say in the field, if it is in the city, will this rocket artillery dare to launch? Is it a green belt behind your butt, or is it random parking on the side of the road?

Therefore, the use scenarios of fire extinguishing rocket artillery were greatly limited, however, human wisdom is endless, and soon a new way was come up: compressed air launcher!

In later generations, there is the famous MP20 fire extinguishing bomb launch fire truck, which is a new generation of fire fighting and rescue equipment with independent intellectual property rights in China. Some people always want to slander the industrial level of the East, saying that the East has no ability to make fire extinguishing equipment, and all the imports are cloudy, which is clearly talking nonsense with open eyes, whether it is the chassis or the bodywork, we can handle it ourselves.

The chassis of this car adopts a 6*4 long wheelbase SITRAK chassis, equipped with 40 groups of 80-liter carbon fiber cylinders, and the rear bucket is equipped with 20 barrels with a caliber of 175 mm and a length of 5500 mm, which can rotate 360 degrees and the maximum elevation angle can reach 90 degrees.

Compared with rocket launchers that fly out on their own power, its biggest advantage is that it has dense firepower!

If you watch TV, you will know that the rockets are all swishing, firing at intervals one by one, and they are not fired together, and conventional artillery is because of recoil, and it is unbearable to fire together, what about this rocket artillery? Of course, because the back can't be smoked, if you launch together, the flame will be very fierce, and the back is afraid that there will be a fire, and it will be safer to launch one after another.

What if you switch to compressed air?

There are no flames in the back, so you can use them casually in the city, and you can also launch them together!

For Ammar, it was important for them to launch together!

Their enemy reaction is very fast, if the rockets are fired one after another, even if it is only a few tens of seconds, they may be locked by the enemy, and then the helicopter will fly over.

Shoot together, bang at once, shoot them all, and run away! The other party can't find it at all!

Thinking of this scene, Amar was excited: "Mr. Qin, coming to the East can always make us gain something, this kind of fire rocket launcher, we all want it!" ”

Forty tractors, one fifty thousand, that's two million, fifty fire trucks, one hundred thousand, a total of five million, so that's a big business of seven million dollars! It was not easy for the organization behind Ammar to raise such a large sum of money, but when he thought of the scene after the device was used, Amar knew that he had to buy it! Tighten your belt and buy it too! When you get back, you'll find a way to raise money!

"Okay, we'll deliver the product with a blueprint for converting carbon dioxide to thermite, but of course, we strictly prohibit this modification."

Thermit!

Amar took a deep breath, his eyes shining with gold.

Carbon dioxide is used to extinguish fires, after hitting out and falling into the fire, carbon dioxide will be released, blocking the fire and the air, so that the flame will naturally be extinguished, for some high-value places, such as libraries, using carbon dioxide to extinguish the fire is the best choice, if you use water or foam, the fire is extinguished, and the books are destroyed.

What about thermite? This is for setting fires!

Thermite is a mixture of aluminum powder and refractory metal oxides. The common thermite is aluminum powder and ferric oxide powder, after the two powders are mixed, they present a bright pink color, it doesn't matter if the two are put together, they need to be ignited with magnesium strips or other ignition agents, so that the thermite will be ignited, which is an exothermic reaction, aluminum powder and ferric oxide will react violently to obtain alumina and elemental iron and release a lot of heat.

The laboratory can do this experiment, and you can see the thermite emitting a dazzling light, and the temperature is as high as 2,500 degrees!

Thermite has many uses, for example, the track of the high-speed rail is integrated, and there are no seams, but in the factory, the track is a section, otherwise it cannot be transported, to the site, it needs to be welded, the electric welding machine and the like need power supply, and the rail is so thick that it is not easy to burn through, so it will be carried out with thermite, the quality and efficiency of welding are very high, and there is no need to bring your own generator.

If this thing were to burn in the block, the effect... Ammar's heart was filled with excitement.

"Especially for ignitions, it is strictly forbidden to use barium peroxide." Qin Feng continued to add: "This thing is highly poisonous, if it burns, the smoke will be too big. ”

Thermite needs high temperature to ignite, the common is magnesium bars, and it can also be mixed with some potassium chlorate, but the most difficult to use is definitely barium peroxide, this thing burns, the smoke thief is big, and it is poisonous.

Zhao Jiao, who was driving, suddenly shook her hands, she took a deep breath and continued driving.

Behind, the tractor is already getting farther and farther away.

Zhang Jianli stood up from the grass on the side, patted the dirt on his buttocks, and said to the people around him: "Let's go, it's over, let's drive the tractor back!" ”

Zhao Yuanshan nodded: "Okay, did you hear what they said just now?" Has this tractor been sold? How much? ”

"How do I know, the grunting bird language, alas, no culture is not good, look at Mr. Qin, it is so smooth to communicate with foreigners, let..."

"Let's just work honestly, follow Mr. Qin in the future, have a future, have you heard? A new motorcycle factory was opened in Fangshan, and Mr. Qin invested tens of millions of dollars into it! ”

In fact, up to now, Qin Feng has spent 2 million to fill the holes in the factory, and the batch of fire trucks can be sold for 5 million US dollars, and the follow-up commitment of 20 million yuan will be there.

And the outside world is spreading more and more evil, and rumors that Mr. Qin has invested tens of millions are floating around.

"Of course, let's follow Mr. Qin in the future, he runs a motorcycle factory over there, and he definitely needs a large amount of steel, so our factory can supply Mr. Qin."

The two chatted, walked to the tractor, started it with the big key, and then one opened, and the other sat on the driving wheel housing next to it, and drove away abruptly.

The two of them didn't know that after they left, two more young men with sharp-beaked monkey cheeks stood up from the grass.

"Brother Pan, these people are sneaky, there must be a problem!"

"That's right, I'm worried that my mother-in-law has no money, so if I get this tractor away and sell it, they will definitely not dare to make a noise..."