It has excellent comprehensive properties, low density and high specific strength. The density of titanium is 4.51 g/cm3, which is between aluminum (2.7 g/cm3) and iron (7.6 g/cm3).
The specific strength of titanium alloy is higher than that of aluminum alloy and steel, and the toughness is equivalent to that of steel.
Titanium and titanium alloy have good corrosion resistance, better than stainless steel, especially in the marine atmosphere with chloride ion erosion and micro-oxidizing atmosphere, their corrosion resistance is good.
Titanium alloy have a wide working temperature range. Low-temperature titanium alloy can maintain good plasticity at −253 ℃, while heat-resistant titanium alloy can work at a temperature of about 550 ℃, and their heat resistance is significantly higher than that of aluminum alloys and magnesium-titanium.
And the application of titanium alloy in automobile s1035 alloy, at the same time, it has good workability and welding performance.
With the worldwide energy shortage and the strengthening of people’s awareness of environmental protection, countries such as the United States, Japan, and Europe have successively promulgated a series of ecological regulations, which have put forward proposals for fuel efficiency, CO2 emissions, reduction of car quality, car safety and reliability, etc. higher requirement.
Many countries and well-known automobile manufacturers are actively developing and increasing their research investment in automotive titanium.
The first category is to reduce the mass of internal combustion engine reciprocating parts (for internal combustion engine parts that perform reciprocating motion, even reducing the mass of a few grams is important);
The class is used to reduce the total mass of the car. According to the design and material characteristics, titanium is mainly distributed in engine components and chassis parts in the new generation of automobiles. Titanium can be used to make parts such as engine system valves, valve springs, valve spring sockets and connecting rods, as well as springs, exhaust systems, half shafts and fasteners in chassis parts.
The connecting rod made of titanium alloy can effectively reduce the quality of the engine, improve the fuel utilization rate and reduce the exhaust volume. Compared with steel connecting rods, the weight can be reduced by 15% to 20%.
Using titanium alloys to make automobile engine valves can not only reduce weight and extend service life, but also improve automobile reliability and save fuel. Compared with steel valves, the weight is reduced by 30% to 40%, and the limit speed is increased by 20%.
The titanium valve seat has a simple shape and is easy to machine. At the same time, surface treatment is not necessary, which reduces the cost. Compared with the steel valve seat, the weight is reduced by 10~12 g.
Titanium and titanium alloys have low elastic modulus and a large σs/E ratio, which is suitable for making elastic components. Compared with steel automobile springs, under the premise of the same elastic work, the height of titanium springs is only 40% of that of steel springs, which is convenient for car body design and its weight.
The amount is reduced by 60%~70%. The excellent fatigue performance and corrosion resistance of titanium alloy can increase the service life of titanium spring.
Titanium is used in the exhaust system in a large amount. The exhaust system made of titanium and alloys can not only extend the service life, improve the reliability and improve the appearance, but also improve the fuel efficiency and reduce the weight. Compared with the steel exhaust system , The mass of the titanium exhaust system can be reduced by about 40%. In the Golf series cars, the weight of the titanium exhaust system can be reduced by 7-9 kg.
Titanium muffler is only 5~6 kg, which is smaller in mass than stainless steel and other mufflers. Make cars faster, operate more flexible and save fuel.
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