Vermicular graphite iron (CGI) is no stranger to many people in the industry. As early as 60 years ago, its metallurgical structure and physical properties were discovered and considered to be an ideal material for partial replacement of gray cast iron. However, due to the very difficult control of the production process, the application of vermicular cast iron has not been popularized for a long time.
As a leader in the vermicular cast iron industry and a first-tier supplier of cast iron foundry, Sweden Sinter Cast's control technology is the most mature in the world and has been widely used in Europe, Asia and the Americas. Became the first to become a technology supplier for cars, trucks and engines. A few days ago, the reporter had the opportunity to interview Dr. Steve Dawson, president and chief executive officer of Hintercast Corporation in Beijing.
When it comes to the advantages of vermicular cast iron, we must start with its microstructure. Dawson introduced that in stable solidification, the carbon in cast iron will precipitate out in the form of graphite and exist in the matrix. Vermicular graphite iron is a kind of iron-carbon alloy, which is the worm-like cast iron in the metallographic structure. Compared with gray cast iron, vermicular cast iron has a tensile strength of 1.8 times, an elastic modulus of 1.4 times, a fatigue strength of 1.9 times, and an elongation rate of 15 times that of gray cast iron.
Vermicular graphite cast iron can make the thinnest wall thickness of the engine only 3mm, so that the height and width of the engine can be reduced by 5%, the length can be reduced to 20%, and the weight can be reduced by 10% to 20%. Even if compared with the lightweight aluminum material, due to the reduced size after the use of vermicular graphite iron, the weight of the engine can still be reduced by 3 kg. At the same time as weight and size are reduced, vermicular cast iron can also increase engine performance by 10% to 20%, NVH by 0.5 to 1.5 decibels, and bore deformation by 20% to 30%, thereby reducing emissions, fuel consumption, and friction loss. The purpose of reducing costs and energy consumption.
The reporter learned that for Hintercast, the essence of its technology is precise thermal analysis—that is, a process with high and stable vermicularity (above 80%). Dawson introduced that if customers use the Hintercast technology, their products can be immediately recognized internationally, eliminating many certifications.
The journalist who opened Xintekast’s history found that the company was the first to receive a patent in 1983. Currently, it has filed 13 patents and obtained 62 valid patents in the world, including 5 valid patents in China.
The reporter saw from the list of users of Hintercastle, Chrysler, Ford, GM, Hyundai, PSA, Toyota, Audi, BMW, Renault, Volkswagen and other passenger cars, Duff, Ford, Hyundai, Navistar, Mann , Scania, Volvo and other commercial vehicles, Caterpillar, Cummins, Honeywell, BorgWarner, SKF and other parts manufacturers, have used Xantkast's technology and equipment to form mass production.
Dawson said that some Chinese manufacturers, especially commercial vehicle manufacturers such as FAW, Weichai, etc., are doing experiments on vermicular cast iron, and Hintercaste is willing to make a difference in the Chinese market.
Deutz Diesel Generator Set,Deutz Diesel Genset,Deutz Diesel Power Generator
Bison Machinery Co., Ltd. , http://www.tzengine.com