Recently, the media’s propaganda and coverage of new energy vehicles are overwhelming, and Shanghai Auto Show also seems to make people feel that all auto companies are now giving full play to the development of new energy vehicles. Many vehicle companies are scrambling to disclose themselves to the outside world. The progress of new energy vehicles, the introduction of the traditional power of the car seems to mean that it is outdated.
However, is this really the case? "These parts are facts, but most of them are illusions. The future of new energy is an important trend, but even after 10 years, real new energy vehicles account for it," said a director of the powertrain division of a major automotive group who did not want to be named. The total amount of cars will not exceed 10%. What will the remaining 90% rely on to compete?"
Yang Jialin, a senior expert in engine technology, once stated that the importance attached to the development of traditional engine technology is even more important. “Actually, as far as I know, the mainstream automotive companies in China are still focusing on the research and development of traditional engine technologies. The carbon emission policy, the lightness of the engine, and the domestic heat of small-displacement cars also lead us to focus on the performance improvement of small-displacement engines.â€
Coincidentally, the "small-displacement engine technology seminar" has attracted the attention of mainstream auto companies and professionals. According to reports, the engine technology seminar was held under the initiative of the two vehicle companies, and it did not want to attract the attention of many mainstream auto companies after the announcement.
“Whether it is the European and American-Japanese international car companies, or the vast majority of domestic domestic car companies that have signed up to participate, the enthusiasm for corporate participation is much higher than we expected. International companies participating in engine technology talks include FPT, Mahle, and BorgWarner. , Georg Fischer, Niemark, Marelli, Ricardo, and other top companies in the engine field rarely see the sights of such heavyweight companies. To meet their requirements, we also organize a large number of engine components. The supplier went to the site to conduct a procurement fair. Nearly 100 suppliers register now. "Experts said," I think, this also shows that in the actual operation, the traditional engine technology will still be taken seriously by the industry. ."
The reporter contacted some of the participating experts. Most of them stated that there is still a lot of potential for excavation of traditional internal combustion engines. For them, the development of traditional engine technologies will also be their focus for a long time.
1. Wear-resisting steel plate is composed of two parts: low carbon steel plate and alloy wear-resisting layer. The alloy wear-resisting layer is generally 1/3~1/2 of the total thickness. When working, the matrix provides comprehensive properties such as strength, toughness and plasticity to resist external forces, and the alloy wear layer provides the wear resistance to meet the requirements of specified working conditions.
2, wear-resisting steel plate alloy wear-resisting layer and substrate is metallurgical combination. Through special equipment, the use of automatic welding process, the high hardness self-protection alloy welding wire evenly welded on the substrate, composite layer number of one layer to two layers or even multilayer, composite process due to the alloy shrinkage ratio is different, uniform transverse crack, which is the remarkable characteristics of wear-resistant steel plate.
3, the gold wear-resistant layer is mainly chromium alloy, but also add manganese, molybdenum, niobium, nickel and other alloy components, metallographic structure in the carbide fiber distribution, fiber direction and surface vertical. The microhardness of carbide can reach HV1700-2000, and the surface hardness can reach HRC58-62. Alloy carbide has strong stability at high temperature, maintain high hardness, but also has good oxidation resistance, under 500℃ completely normal use.
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