Cui Hongchun really had no choice, so he regarded the rotary tiller blade as a life-saving straw. The best way to let his superiors see the results in the shortest possible time was to show up at such an international exhibition.
With China's agricultural machinery technology level at that time, it was undoubtedly very difficult to win a prize in such a competition. However, the Qingfeng Factory's rotary tiller blades gave Cui Hongchun a glimmer of hope. After all, this kind of blade can enter the Japanese market. Although
Its service life has only reached the average level of similar products in Japan, but with such a foundation, if we work harder, can we create a miracle?
Cui Hongchun doesn't have much confidence in this, so he needs to ask Chen Heqian and Qin Hai to make an assessment. He has already thought about it. As long as these two think it is possible, he will try his best to satisfy whatever conditions are required. To put it bluntly,
, what he wants to do is a political performance project. This is what happens in China. As long as this political performance project is completed, the follow-up work will go smoothly.
"This... I'm afraid it's a bit difficult." Chen Heqian frowned and poured a ladle of cold water on Cui Hongchun's pocket.
"What's the difficulty? Professor Chen, please tell me." The muscles on Cui Hongchun's face twitched slightly, but he still asked Chen Heqian extremely calmly.
Chen Heqiandao: "I have not personally observed the rotary tiller blades of Qingfeng Factory, but Xiao Qin introduced me to the entire process. Qingfeng Factory was able to increase the service life of the rotary tiller blades by nearly 500 acres.
There are two main improvements. First, they resmelted the purchased steel to improve the strength of the steel; second, they introduced a high-frequency surfacing process and covered the cutter head with a layer of highly wear-resistant metal.
.”
"Yes. Xiao Qin also introduced this situation to me." Cui Hongchun nodded.
Chen Heqian continued: "To further improve the durability of the blade, we still need to start from these two aspects. One is to further improve the steel formula, and the other is to improve the solder composition of the surfacing. As far as I know, Qingfeng Factory is working on these two aspects.
Some attempts have been made in all aspects, and what they can achieve now is their ultimate. Of course there may be some improvements in the future, but it may be difficult to make a substantial improvement."
"Xiao Qin, is that true?" Cui Hongchun turned to Qin Hai and asked.
Qin Haidao: "I gave it a rough thought. Without significantly increasing the cost, there is little room for improvement in the blade steel. The surfacing solder can be further optimized, but this requires experimentation. If everything goes well, we will
It is possible to increase the service life of the blade from the current 1,200 acres to about 1,500 acres, reaching a higher level of similar products in the Japanese market. But..."
"1,500 acres... This level cannot be compared with the international advanced level at all." Secretary Li Yang added coldly from the side. Cui Hongchun has been thinking about this matter these days. As a secretary, Li Yang naturally has to be right.
Conduct in-depth research on this issue. According to the information he saw, some agricultural machinery manufacturers in Japan and France have been able to increase the service life of rotary tiller blades to more than 2,000 acres. If Qin Hai only provided 1,500 acres, it would be completely useless.
Competing strength.
When Qin Hai said "but", he was actually thinking about this issue. He knew that the service life of the better rotary tiller blades on the Japanese market is about 1,500 acres, but these are only products sold on the market. The highest-end ones owned by manufacturers
The technology definitely doesn't stop there. He has nothing to do about this gap, because the higher you go, the more precise technical details are needed, which cannot be solved by relying on the memory fragments he brought from later generations.
As far as cladding technology is concerned, he knows how to use this technology, but as for the specific formula of solder, he can only continue to explore. Foreign manufacturers have been exploring this aspect for many years. Compared with others, Qingfeng Factory
The difference is really too big.
"Secretary Li, according to your understanding, what is the service life of a rotary tiller blade before it is possible to obtain a better ranking in international competitions?" Qin Hai asked Li Yang.
"No less than 2,000 acres." Li Yang said. After that, he added: "I am also limited to the information that can be obtained through public channels. I think that if we participate in the competition, some manufacturers may be able to obtain it."
Produce products with a life span of 2,500 acres or more.”
"This means that we have to double the current level. This... is almost impossible." Chen Heqian said. He also deliberately made the difficulty higher to prevent Cui Hongchun from putting too much pressure on Qin Hai.
.
"Doubling it again..." Qin Hai pondered.
"The ministry can provide you with all the necessary conditions." Cui Hongchun reminded, and he began to want to back down. However, since Qin Hai had not clearly backed down, he still wanted to try harder. In his heart, he felt vaguely
Qin Hai may be a person who can create miracles.
"If we want to double the quality, we can't rely on the surfacing process." Qin Hai said softly.
Hearing this, Cui Hongchun was a little disappointed, but Chen Heqian's eyes lit up: "Xiao Qin, are you saying that you are considering using other techniques?"
Surfacing is only one of the ways to improve the wear resistance of tools. Since Qin Hai said that relying on the surfacing process is not possible, it means that other processes are still possible. Only people like Chen Heqian who have enough tacit understanding with Qin Hai can
You can hear the subtext in Qin Hai's words.
Qin Hai smiled and said, "I have some ideas, but they are still very immature."
In fact, Qin Hai had already thought of an excellent solution at that moment, but it was just not convenient to say it in public. Because this solution involves a new material process that is still very immature: thermal spray technology.
Rotary tillage blades are used for plowing. Although the material of the blade is steel, it will still wear out due to long-term friction in the soil until it is scrapped. In order to improve the wear resistance of the blade, it is necessary to attach some highly wear-resistant materials to the tip of the blade.
Material. This kind of material is not difficult to find. The difficulty is how to bond this material with the knife body.
The overlay welding technology that Qin Hai used before is a method of bonding materials. The principle of this method is to mix wear-resistant materials and iron powder to form solder, then apply the solder on the cutter head, and heat the solder to melt it.
Thereby integrating with the blade body.
The wear-resistant materials used in cladding technology have higher wear resistance than ordinary steel, but they are far from reaching the ideal level. In the field of materials, the material with the best wear resistance is ceramics. If it can be used
If ceramic is used as the blade material, the wear resistance of the blade will be doubled.
The problem is that although people know that ceramics can improve wear resistance, they cannot find a way to combine ceramics with steel. The melting point of ceramics is much higher than that of metals, and it cannot be processed by the cladding process. At that time,
, the United States, Britain and other countries have developed ceramic cutter heads, but they can only use high-strength resin to stick them on the cutter. The wear resistance of this glued cutter head is sufficient, but it can be imagined that its
The impact resistance is extremely weak. After all, the strength of resin bonding is not the same as that of welding.
Thermal spraying technology is a new material coating technology. Its principle is very simple, that is, heating spray materials such as ceramic particles to a plastic or molten state, and then spraying them onto the pretreated substrate surface.
On the premise that the substrate remains in an unmelted state, the spray material is allowed to adhere to the substrate to form a coating with special properties.
To put it simply, it is equivalent to loading the material that needs to be attached into a gun and firing it towards the substrate, so that the material is shot into the substrate like a bullet to form a coating.
The origin of spraying technology can be traced back to 1909, when a Swiss young man invented the spraying technology of zinc metal. In the following seventy or eighty years, spraying technology has been developing and was the first to be widely used in the aviation and aerospace fields.
Application. However, at this stage, the spraying process is still very complicated, especially the technical requirements for forming ceramic coatings are still very high, and are limited to use in high-end equipment manufacturing.
In 1982, SKS Company of the United States developed the technology of thermal spraying using high-speed flame spray guns, which lowered the threshold for thermal spraying. In the following ten years, high-speed flame spray gun spraying technology has made great progress, thus making thermal spraying technology
Step down from the altar and start to enter the production field of ordinary products.
Qin Hai is very familiar with this period of technological development history. He knows that currently, countries around the world are still in the exploratory stage in terms of thermal spraying technology, and it is impossible to talk about using this high-end technology on low-end products such as agricultural machinery. If
If he can be the first to apply this technology, he can rely on the generation difference in technology to leave his competitors far behind.
If he can really stand out in the basic parts competition, for Cui Hongchun, he can earn a great honor, and for Qin Hai, he can build his own technology brand and take the lead in thermal spraying technology.
Machinery. The agricultural machinery market is actually only a very small market. Once the thermal spraying process is widely used, its market value will be immeasurable.
Of course, Qin Hai would not disclose such an idea to Cui Hongchun in advance. He also did not want to explain it to Chen Heqian in advance. Who knows if this old gentleman would get excited and recruit a group of people to start it? Qin Hai
With countless technical essentials of thermal spraying in his belly, he didn't want to give such a big piece of fat to Chen Heqian for no reason.
Cui Hongchun guessed what Qin Hai was thinking, and he was a little helpless for this young man who was obsessed with making money. If Qin Hai had any political demands, he could exchange political benefits with Qin Hai.
But now it seems that Qin Hai has no intention of doing this and there is nothing he can do.
"Xiao Qin, are you really sure that you can produce a knife that can participate in the competition within three months?" Cui Hongchun asked.
"I'm 80% sure." Qin Hai said in a low-key tone. When he thought about the thermal spraying process, he knew that he was at least 99% sure that he could get a place in the competition. Unless the world changed, foreigners
We also solved some core problems in this process in advance to produce the same product.
PS: Some of the content on materials and technology is definitely not what Du Niang said. It was summarized by Cheng Zi while reading the book. I hope I am not wrong. Let’s forget about the too detailed technical details. It’s a novel, so long as there are no big mistakes.