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General Knowledge of Material Selection for Heavy Truck Radiators

As far as the heavy truck radiator is concerned, it is also a vehicle radiator, which only acts on the heavy trucks. Because heavy trucks are mostly used for long-distance transportation, the requirements for heavy truck radiators are relatively high. We often see on the TV that the drivers will pour water into the car at the high-speed rest stop. Are you confused? Indeed, they are adding something similar to coolant to the heavy truck radiator. So today let's take a look at what kind of material in the vehicle radiator is more suitable for the heavy truck radiator.


1. Material selection of heavy truck radiator


We should be aware that material of different vehicle radiators has a different thermal conductivity and is ranked from highest to lowest, namely silver, copper, aluminum, and steel. However, if silver is used as vehicle radiators, it is too expensive, so the solution is to use copper. Although aluminum is cheap, it is obviously not as thermally conductive as copper (about 50% of copper).


Commonly used materials in heavy truck radiator are copper and aluminum alloys, both of which have their advantages and disadvantages. Aluminum radiators have obvious advantages in terms of material lightweight. While gradually replacing copper radiators in the field of automobiles and light vehicles, the manufacturing technology and technology of copper radiators have developed rapidly. Copper radiators can be used in passenger cars and have obvious advantages in engine radiators (such as construction machinery, heavy trucks, and heavy truck radiators). Most of the radiators of foreign cars are aluminum radiators, mainly for the sake of environmental protection (especially in European and American countries). Aluminum radiators account for an average of 64% of new European cars. Judging from the development of China's vehicle radiator production, the number of aluminum radiators produced by brazing has gradually increased. Copper radiators produced by brazing are also used in buses, trucks and other engineering equipment. Vehicle radiators play an important role in automobile manufacturing and application. In addition to active cooling, the evaluation of heavy truck radiators largely depends on the heat-absorbing and heat-transfer capabilities of heavy truck radiators.


2. The important role of vehicle radiator


The vehicle radiator belongs to the automobile cooling system. The radiator in the water cooling system of the engine consists of three parts: the water inlet chamber, the water outlet chamber, the main chip and the radiator core. The radiator cools the coolant that has already reached a high temperature. The coolant in the radiator cools down when the tubes and fins of the radiator are exposed to the air flow created by the cooling fan and by the movement of the vehicle.


In order to ensure the cooling effect, the automobile cooling system is generally composed of a radiator, a thermostat, a cylinder head water channel, a cylinder body water channel, a water pump, and a fan. The radiator is responsible for the cooling of circulating water. Its water pipes and heat sinks are mostly made of aluminum. The aluminum water pipes are made into a flat shape, and the heat sinks are corrugated, focusing on the heat dissipation performance. The vehicle radiator has both water storage and heat dissipation function. An air vapor valve is arranged on the cover of the vehicle radiator and there is a public air hole communicating with the atmosphere.


The radiator should have sufficient heat dissipation performance and high service life in a limited space, so the assembly of the entire radiator must reduce the consumption of raw materials, improve the production process and structure and reduce the production cost, thus achieving thin-walled, light-weight and high-efficiency. In the welding part, the method of expanding the welding area should be adopted to reduce the stress. For example, the main plate and the water chamber should be in the form of narrow grooves welded on both sides, and the wall thickness should be reduced as much as possible. It is not allowed to increase the wall thickness to improve the intensity of the assembly.

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