The basic Aluminium Die Casting process consists of injecting molten metal under high pressure into a steel mold called a die.
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â— actual load UHP pneumatic tire overload culprit <br> <br> trailer wheel exceeds the maximum permissible load, the inner pressure of the tire will increase, when the internal pressure of the tire over a tire valve sealing pressure , it will cause tire leakage, if there is a tire leak in the rear double-wheel bearing capacity and the driver failed to find in time, it will lead to another tire in the rear two wheel load is too large and puncture. 
â— tread tire pressure caused by high temperatures cause more temperature rise after puncture <br> <br> prolonged use of the brakes, the brake drum will gradually produce a high temperature, since the truck tire rim close to the tire valve inside the intermediate position, away from the brake drum close The high temperature generated by the brake drum will cause the rubber on the bottom of the valve to expand and deteriorate, and the sealing performance will be poor. Trucks that often travel in mountain areas and hilly areas will often have to use the brakes for a long time, so the tire valve sealing performance is generally poor. The chance of a puncture is even higher.
â— Safety tires should be used with caution without injury 
An internal injury to the tire means that the tire inner chamber was once repaired by a sharp hole or a valve leak. Repaired tires have far less tightness and load capacity than unrepaired tires. The repaired parts of the inner tires of the repaired tires are generally covered with rubber gaskets. The purpose of these gaskets is to repair the tires and to prevent the repaired tires from being “wrapped†at the tire's perforation. However, the gasket that protrudes from the inner surface of the tire has wear-resistance to the repair of the inner tube under load. If the gasket is frequently overloaded or bumpy, it is easy to make the tire puncture.
â— cold water cooling is not desirable hot and cold explosive tire
Most trucks are now equipped with a watering system. It is advisable for card members to turn on the air pressure to open the tires during departure. Do not wait until the tire temperature rises and then turn on the water to cool down. If the tire temperature is too high, use the water to cool down. At this time, the external temperature of the tire caused by rubber shrinkage, and the tire also maintained a higher temperature and pressure, resulting in different tire internal and external forces, it is very easy to cause burst tires and brake pot burst.
â— Damaged tires should be replaced in time to avoid frictional heating and fire
After the Shuangqiao and semi-trailer models have a large number of tires, it is not easy to find out after the tire burst. After the tires continue to run, the damaged tires will rub against each other until the other tire is punctured. After a twin tire bursts, the hub will come in contact with the ground to generate a lot of friction and then ignite the damaged tire.
Reasons for the puncture of a semi-trailer
In the process of driving a trailer, safety issues have always been issues that we must pay attention to. Among the many safety issues is the puncture. Especially in the high temperatures in summer, according to statistics, about 1/3 of traffic accidents on the highway are caused by tire failure. How to avoid these problems, we must first understand the reasons for the puncture under the trailer, according to the station. The following are the main reasons summarized by experience. Everyone can refer to the following:
0. the density of adc12 and aluminium is 2.75g/cm^3
1. Aluminium Die Casting Lower costs compared to other processes.
2. Economical – typically production of any number of components from thousands to millions before requiring replacement is possible.
3. Castings with close dimensional control and good surface finish
4. Castings with thin walls, and therefore are lighter in weight