Titanium alloy parts processing plays an important role in machinery manufacturing

In recent years, with the development of the automobile industry, the world's automobile production and ownership have increased day by day. In 2009, my country's automobile industry advanced by leaps and bounds, with automobile production and sales exceeding 13 million, surpassing the United States and Japan to become the world's largest automobile production and sales country. While automobiles bring convenience to people's travel, they also have three major problems in fuel consumption, environmental protection, and safety. Focusing on sustainable development considerations, it is particularly urgent to reduce fuel consumption and reduce emissions. According to statistics from international authorities, about 60% of the fuel used in automobiles is consumed by the weight of the automobile. For every 10% weight reduction of a car, exhaust emissions can be reduced by 10% and fuel consumption can be reduced by 7%. It can be seen that reducing the weight and weight of automobiles is an effective measure to achieve the above goals.

There are two main ways to realize automobile lightweight: one is to optimize automobile frame structure; the other is to use lightweight materials in automobile manufacturing. At present, the light alloys used in automobiles mainly include metals such as aluminum, magnesium, and titanium alloys.

1. Application and characteristics of titanium alloy in automobiles

Titanium alloy is a new type of structural and functional material. It has excellent comprehensive properties, low density and high specific strength. The density of titanium is 4.51g/cm3, which is between aluminum (2.7g/cm3) and iron (7.6g/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 alloys have good corrosion resistance, better than stainless steel, especially in the marine atmosphere, they resist the corrosion of chloride ions and have good corrosion resistance in a micro-oxidizing atmosphere. The working temperature of titanium alloys is wider, and low temperature titanium alloys are at -253℃. It can also maintain good plasticity, and the working temperature of heat-resistant titanium alloy can reach about 550°C, and its heat resistance is significantly higher than that of aluminum alloy and magnesium alloy. At the same time, it has good processability and welding performance.

The excellent properties of titanium and titanium alloys have attracted the attention of various cutting-edge industries since the industrial production of titanium. With the start of the titanium industry, in the mid-1950s, titanium entered the automobile industry. Entering the 1990s, with the global energy shortage and the strengthening of people’s awareness of environmental protection, especially in the automotive industry, the United States, Japan, and Europe have successively promulgated a series of ecological regulations to regulate fuel efficiency, CO2 emissions, vehicle weight reduction, The safety and reliability of automobiles put forward higher requirements. Many developed countries and well-known automobile manufacturers are actively developing and increasing research investment in titanium for automobiles. Provides powerful power for automotive titanium. In the new century, my country's titanium industry has gradually entered the automotive field.

2. Titanium parts used in automobiles

The uses of titanium in automobiles are mainly divided into two categories. The first category is used 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 second category 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. In the engine system, titanium can be used to make parts such as valves, valve springs, valve spring holders and connecting rods; in the chassis parts are mainly springs, exhaust systems, half shafts and fasteners.

According to the information, in addition to the above mentioned key points, there are also: rocker arms, suspension springs, piston pins, turbocharger rotors, fasteners, lug nuts, car stop brackets, door projection beams, brakes Caliper piston, pin shaft bolt, clutch disc, pressure plate, shift button, etc.

Ways to reduce the cost of titanium alloys. Although titanium and titanium alloys entered the field of automobile manufacturing as early as the 1950s, their development was relatively slow, mainly due to price factors. In order to satisfy the use of titanium in the automobile industry, titanium manufacturers carried out smelting, processing, and manufacturing. A lot of work. To meet the needs of the automotive industry.

3. Reduce processing costs

The processing cost, which accounts for more than 60% of the total cost, is the focus of research on cost reduction in various countries. In the production process of titanium parts, not only the process is complicated, but also a large amount of residual titanium is generated during the production process, and the production cycle is long, which leads to an increase in the production cost of the parts. It hinders its wider promotion and application.
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