"-40 degrees Celsius...... minus 60 degrees Celsius......" Ding Baoguo's eyes were straight, muttering to himself as if he was stupid, as an expert in the domestic rubber industry, he knew too well what these two numbers meant.

After a long time, Ding Baoguo said to Lin Hongfei with a wry smile, "Brother, I won't hide it from you, if you really spend the capital to do it, it's not that you can't do it, but have you calculated, how much money do you have to invest in research and development alone?" At this stage, the lowest temperature of a small-scale industrial cold storage is only minus 20 degrees Celsius, but the construction cost of such a small-scale cold storage will be at least one million, and there is basically no ability to build an ultra-low temperature laboratory of minus 60 degrees Celsius at this stage in China. ”

"Although I didn't calculate carefully, but based on my brother's experience, it is estimated that if you want to make a rubber track that can ensure performance at an extreme low temperature of minus 60 degrees Celsius, you need at least 40 million to 60 million scientific research investment. In addition, we still have to put a question mark if there is such a big market......" Speaking of this, Ding Baoguo smiled bitterly and shook his head, "Brother, you listen to my brother's advice, don't do this project, there is really such a big market, brother, I will help you with anything, but do you think, how big can this market be?" ”

Lin Hongfei smiled bitterly, and did not answer Ding Baoguo's words for a while. After being silent for a while, Lin Hongfei said, "I also know that this is a bit difficult, Brother Ding, then how difficult do you think it is to make a rubber track that can adapt to a low temperature of about minus 30 degrees, and the steel rubber track used on tanks and armored vehicles?" ”

"This ...... I really can't say," faced with Lin Hongfei's question. Ding Baoguo also smiled bitterly, spread his hands, and said, "This is considered a national defense field, and the difference between it and our civilian field is a bit big, but I estimate that without tens of millions of investments, there is no time for seven or eight or even ten years, and there is not much hope." ”

"Brother Ding, tell me, what is the difficulty of this rubber track?"

"So, I'll tell you about this rubber track first. It is the difficulty of the steel track glue used on tanks and armored vehicles. "Ding Bao National Road.

"Okay." Lin Hongfei did not hesitate and nodded, he also needs to have a detailed understanding of the difficulty of this project, so that he can have an accurate judgment.

"Let's just say that this kind of rubber track is actually quite simple. It is to glue a rubber plate to the steel track, and the steel track has this rubber plate. It's like a bicycle with tires attached to the rim. It not only absorbs vibration and noise, but also extends the life of the tracks...... Brother, you should know that the tracks of tanks and armored vehicles have a service life, and they are not long, but after hanging the rubber plate, it is the rubber plate that is in direct contact with the ground, not the steel track. In this way, I estimate that the life of a track can be at least three or four times longer than the original. ”

It's simple, but it's hard to turn it from truth to fact. First of all, the requirements for the track itself are very high, and the rubber can not be too thin, too thin to play the role of buffering; The rubber should not be too thick, too thick will affect the movement of the tank, and at the same time, there must be a suitable glue to be able to stick the rubber plate and the steel track tightly together to ensure that it will not fall off during driving; ”

"This is only the first level of the problem, the next step is to choose the right rubber material and develop the right rubber formula, any kind of rubber track, to meet the requirements of all-terrain use. Let me give you an example, if a tank is to drive on the Gobi Desert full of pebbles and sharp angular stones, then the rubber on the track must have enough puncture resistance to avoid damage to the track; For example, in the cold three northeastern provinces, the moving tank will face a low temperature of more than ten degrees below zero, and if the rubber is not resistant to low temperature, it will cause deformation and fall off; In the wet south, the rubber track should also have a strong grip to facilitate driving on muddy mountain roads; ”

"In addition, the rubber track also requires the rubber to have the characteristics of 'low heat generation', for example, when we drive, the road surface in summer due to the high temperature, sometimes there will be a puncture, so our rubber track must have the characteristics of low heat generation, speaking of which is very good in Russia, where the perennial low temperature, their rubber track only needs to be cold resistant, and there is no need to take into account the need to take into account the 'hot and cold' of the rubber track like our country;"

"This is the second step, the third step is more difficult, is to develop the precise processing of rubber materials, a certain amount of rubber raw materials to add less ingredients, must be accurate, to what extent? To be accurate to a ton of raw materials to be added to the ingredients must be accurate to the gram, add one more gram or one gram less to the ingredients, this batch of materials will be wasted, the production of things can not meet the requirements at all, and must ensure that the mixing is uniform, and the uneven mixing performance can not be guaranteed,"

"This is still just a rubber material, in addition to this, there should also be a lining material in the middle, just like a cord in the middle of the tire, and a steel wire embedded in a heavy-duty tire for trucks, this lining material should also be studied."

"This is still just a rubber track, if it is a rubber track, like the one in front of you," said, Ding Baoguo kicked the rubber track on the DT-10PM in front of him, "It's more difficult!" At this stage, our country does not talk about this special rubber track, even the rubber tracks used in tanks and armored vehicles are not good, and can only be used on hard paved roads such as asphalt and cement. ”

"The rubber plates used by our country on tanks and armored vehicles at military parades and some other occasions cannot be regarded as real rubber tracks, at best, they can only be regarded as temporary emergencies and do not destroy the ground, and they don't need to run the Gobi Desert. At most, I ran dozens of kilometers, and the rubber plate was all gone. This is true even for steel rubber tracks, not to mention rubber tracks. ”

Speaking of this, Ding Baoguo persuaded bitterly, "Brother Hongfei, when my brother persuades you, if you want to engage in this thing, there is no seven or eight years or even more than ten years of hard work, no tens of millions or even hundreds of millions of investment, you don't have to think about it at all, the country is okay to play, let's do business, forget it." ”

Hearing Ding Baoguo say this, Lin Hongfei nodded continuously.

Lin Hongfei is also engaged in research and technology, although his major is not in the rubber industry, but the intersection of the automobile industry and the rubber industry is very deep, it is not too much to say that he is half a theoretical expert in rubber disciplines, and it is natural to know that Ding Baoguo is not wrong at all, not only is it right, but it is even underestimated to a considerable extent.

"I don't know a little about the lining material added to this rubber track and the rubber track, I don't know a little bit about the situation in Russia, but in the United States, whether it is a steel rubber track or a rubber track, it is a para-aramid material, which is commonly known as Kevlar material, and the Kevlar body armor made by the Americans has this para-aramid material. Reagan is all about this. Lin Hongfei said, obviously, what he meant by this was to tell Ding Baoguo that he had no intention of giving up.

"Kevlar material?" Ding Baoguo was stunned for a moment, "As far as I know, our country has not started to study Kevlar materials at all," Speaking of this, Ding Baoguo shook his head and said bitterly, "Of course, maybe the research has begun, but it has not been announced out of the need for secrecy, but for us, is this different?" And there is no kind! ”

"Hongfei, you listen to your brother's advice, this thing is a bottomless pit at all, and no amount of money is enough for you to fill it...... Of course, if you plan to throw all the money you earn every year, you will definitely be able to pile up the right rubber material with money, but is it worth it? This kind of thing is simply a project that can only be played by the state and is qualified to play, so let's not mix it privately, we can't afford it. ”

Lin Hongfei smiled and didn't answer immediately, but asked Ding Baoguo rhetorically, "Brother Ding, how much do you know about the material para-aramid?" ”

"Ah......" Ding Baoguo really didn't expect Lin Hongfei to ask this question, he was stunned for a moment, he touched his head embarrassedly, and said, "There are really not many people who know the Tao, except for the body armor you said, it seems that the helmets used by the American and European armies now are made of Kevlar material, right?" ”

At the same time, Ding Baoguo wondered in his heart, he was a rubber worker, and he just had to make his own tires, what did he do with so much?

"Well, not only body armor and bulletproof helmets, but also in the aircraft also have a lot of applications, in the Gulf War in the limelight Apache helicopter gunship on the application of a large number of Kevlar, well, that is, para-aramid material, this kind of thing has several times higher than the specific strength and specific modulus of steel wire, as well as very good thermal stability, flame retardancy, electrical insulation, corrosion resistance and radiation resistance, very widely used, in military protection, aerospace, high-speed railway, communications, construction, Automobiles and other fields of the national economy can be used, not only one of the best high-performance fiber materials in the world, but also one of the strategic-level national defense materials, I can assert that in the next 10 years, Kevlar materials will be able to become the world's largest production, the most widely used high-performance fiber, national defense construction demand. ”

Speaking of this, Lin Hongfei suddenly turned his head and stared at Ding Baoguo with blazing eyes, "Brother Ding, you say, if I don't know the prospect of this thing, now that I know the Dao, can I give up?" No matter how much I invest, I'm going to get this thing out! ”

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PS: Today is still four more, in addition to the three more, there is one more 2/27, that is, the second of the 27 more owed (to be continued......)