How to manufacture car radiators

Product Description

The car radiator is an essential component of the internal combustion engine. The radiator cools the heat generated by the engine during operation, maintaining the engine’s long-term stability.

This radiator’s structure usually comprises a plastic tank and an aluminum core. The radiator must cool the oil in the gearbox for cars with automatic gear shifting. Therefore, an oil cooler is installed at the water tank position of the radiator to cool the gearbox oil.

This article mainly discusses how modern factories manufacture aluminum radiators.

Types of car radiators

Brazing type

It assembles aluminum parts according to the design and combines them through high-temperature brazing under nitrogen protection. This type of radiator currently has the highest market share.

This type of radiator is installed in the new car market because it is lightweight and has a good heat dissipation effect. People generally use this product.

Mechanical type

Its manufacturing process involves inserting a round tube into the middle of the fin, then expanding the tube and tightly combining it with the fin. Its manufacturing process is relatively simple, and the production speed is fast, so its price is very advantageous,

While some small-displacement engines may use this type of radiator, it is rarely used in large-displacement engines.

Copper material radiator

A few years ago, almost all radiators were made of copper material, which had good cooling capacity and easy maintenance,

Due to the high cost of copper materials, the impact of copper brazing on environmental protection, and many other reasons, copper radiators have lost their competitiveness,

At present, almost no factories produce copper radiators in China. However, with the continuous development of industry, copper radiators may disappear in the future.

Production process of car radiator

Brazing-type radiator Production process

The production process of brazed radiators usually requires stamping workshops, injection molding workshops, assembly workshops, brazing workshops, etc., each of which completes its production tasks.

Next, a video will introduce the entire production process, allowing you to understand it intuitively.

Mechanical type radiator Production process

Although the production process of this type of radiator is relatively simple, it requires many machines to complete.

Below, we will use a video to introduce its entire production process.

Brazing technology for car radiators

The production of brazed radiators requires mastery of brazing technology, one of the most important techniques throughout the production process.

The correct steps are to spray the brazing agent on the surface of the aluminum core, dry it to evaporate the moisture, preheat and braze it, and then cool the radiator core.

During the brazing process, engineers cannot perceive the temperature changes and chemical reactions of the aluminum core in the furnace, which makes it difficult to control the brazing quality accurately,

That’s why experienced engineers are very important. Our highest brazing qualification rate is 99.7%, which means that out of 1000 aluminum cores produced, 3 have leaks.

If you need support for this technology, you can let us know.

Car radiator making machine list

Car radiator part list

• Plastic Tank: The material is PA66-GF30, which requires injection production
• Aluminum tube: The material is 4343/3003/7072, which requires high-frequency welding machines for production
• Aluminum fins: The material is 3003, and it requires a roller fin machine for production
• Oil cooler: The material is copper or stainless steel, and it requires multiple machines for production
• Sealing gasket: The material is EPDM rubber, which requires a lot of machine production,
• Head plate: The material is aluminum, and multiple punching presses are required for production.
• Side panel: The material is aluminum, and multiple presses from a punch press are required for production.

Ideas for producing car radiators

1. Producing radiators requires a lot of mold. If you can purchase parts, please purchase them directly instead of making molds and producing them yourself. A light asset factory is helpful for future development.

2. As there are many types of cars, choosing the most profitable model and manufacturing its radiator can maximize your profits.

3. The factory that produces car aluminum radiators has a huge investment, so it is necessary first to examine the market, development prospects, and technological reserves,

4. An excellent factory has the ability to recover funds quickly, so you must have some good sales channels,

5. An excellent management team is indispensable in the production process of car radiators.

6. Due to the special nature of aluminum, it is not allowed to accumulate a lot of dust on the floor of your workshop, as it will affect the quality of brazing and the appearance of the aluminum core surface.