In automobiles, since the muffler is hidden in an invisible place, and its sense of luxury and creativity cannot be emphasized, the exhaust gas temperature is higher than that of a locomotive. Under the problems of high temperature oxidation resistance and high temperature strength , Titanium alloy tubes and titanium rods are limited in special mufflers. Titanium alloys and titanium rods have excellent properties such as light weight, corrosion resistance, and formability, and are high-end and creative, and are used in silencers. In response to a similar situation, some companies have developed Ti-1.5Al to improve high temperature oxidation resistance and high temperature strength in order to avoid significant damage to the formability of titanium alloy tubes and titanium rods. Titanium metal was developed to increase the exhaust temperature from the previous height to 700~750℃ for reasons such as engine and catalytic conversion, so it is used in the muffler of automobiles. In 2009, it registered the ASTM standard, and also obtained the licenses from the United States, the United Kingdom, Germany, Italy and France.
Titanium alloy tubes and rods are considered more promising. Compared with the existing muffler materials and JIS two kinds of pure titanium and Ti-1.5Al, this titanium alloy and titanium rod have better high temperature oxidation resistance. These existing materials cannot be used due to problems such as embrittlement. Possibility of use in high temperature environments. At the same time, the high temperature strength is close to that of Ti-1.5Al. Compared with the two types of JIS pure titanium, at 400 °C, the yield strength is 3~4 times that of pure titanium, and the tensile strength is 2~3 times that of pure titanium. Therefore, this titanium alloy and titanium rod have the same characteristics of suitable high temperature strength as Ti-1.5Al. In addition, this alloy can be expected to have the same level of formability as JIS two types of pure titanium.
As far as the car is concerned, the part after the center pipe has a lower temperature, but even the exhaust temperature of this part can reach 700~800℃ according to the different types of vehicles. When titanium metal is exposed to such high temperature for a long time, the surface edge part will become fragile due to the formation of a hardened layer due to the diffusion of oxygen. At the same time, the proportion of peeling oxidation occurs, and the titanium part of the metal reacts, which will reduce the strength. In addition, reduction in fatigue strength and embrittlement occur due to coarsening of crystal grains. In such a high temperature environment, Ti-1.5Al also has places where it cannot correspond to its oxidation resistance. Therefore, if it is possible to develop a titanium material that retains the high temperature oxidation resistance of Ti-1.5Al or higher, and retains the strength characteristics of Ti-1.5Al for the forming of the composite parts of the muffler system, it will be a good muffler. Material.
Contact us for more information. Thank you
Nicole
Company: Baoji Jimiyun Dynamic Co., Ltd
Cuntry:China
Add:Baoti road,Jintai,Baoji city,Shaanxi,China
Cel:+86 13369210920
Website:www.jm-titanium.com
