Steel radiators occupy an important place in modern heating systems due to their high efficiency, durability and aesthetics. Among them, steel two-column radiators have become one of the most widely used radiator types in the market due to their stable structure, excellent heat dissipation performance and moderate cost.
First, the production process.
Preparation of raw materials.
The manufacture of steel two-column radiators first requires the preparation of qualified raw materials. It mainly includes steel, welding materials, coating materials, etc. The steel should be made of high-quality low-carbon steel to ensure the strength and stability of the product; The welding material needs to choose the appropriate electrode or wire according to the type and thickness of the steel; The coating material needs to have anti-rust, anti-corrosion, aesthetic and other properties.
Steel cutting and forming.
Once the raw materials are ready, the steel will be cut and shaped according to the design drawings. This step is usually done with a CNC machine or laser cutting machine to ensure that each piece of steel is dimensionally accurate. After forming, the steel plate will enter the pre-treatment process to remove rust and dirt for subsequent welding and painting.
Welding assembly. The pretreated steel plate will be assembled into a complete steel two-column radiator by welding technology according to the different product designs. During the welding process, it is necessary to ensure the quality of the weld and prevent defects such as slag inclusion and porosity. After the welding is completed, a comprehensive quality inspection of the product will be carried out, including the appearance and strength of the weld, etc.
Paint treatment. Qualified steel two-column radiators will be coated to enhance their anti-rust and anti-corrosion properties as well as their aesthetic appearance. The coating generally adopts an automatic spraying line, and the primer is sprayed first, and then the topcoat is sprayed. The primer mainly plays a role in preventing rust, while the topcoat can enhance the appearance of the product. Once the coating is complete, the product will enter the curing process, where the paint will dry and harden sufficiently.
Quality inspection and packaging.
The coated steel two-column radiators will undergo strict quality inspection to ensure that the products meet the relevant standards and customer requirements. The test content mainly includes appearance, size, coating thickness and compressive performance. Only products that pass the test can enter the packaging process. When packing, we will choose the appropriate packaging method according to the different needs of customers to protect the product from damage during transportation and storage.
Second, the main process links.
Welding process. Welding is one of the key links in the manufacture of steel two-column radiators, and its quality directly affects the stability and service life of the product. Therefore, the welding process requirements are very strict, and suitable welding methods and welding parameters need to be used to ensure that the weld is smooth, smooth and free of slag inclusions. In addition, the welding process also needs to carry out weld quality inspection, such as the use of X-ray non-destructive testing or ultrasonic testing and other technical means to ensure that there are no defects inside the weld.
Painting process. Coating is an important part of determining the appearance and quality of steel two-column radiators. In the process of coating, it is necessary to select appropriate coating materials and spraying equipment to control environmental factors such as coating temperature and humidity to ensure strong coating adhesion, uniform color and high smoothness. In addition, pre- and post-treatment before and after painting is also an important factor affecting the quality of coating, and operations such as rust removal, cleaning and drying need to be strictly controlled.
3. Quality inspection and control.
In order to ensure that the quality and performance of the steel two-column radiator meet the standard requirements and customer needs, strict quality inspection and control are required in the production process. Quality inspection mainly includes the following aspects:
Appearance inspection: check whether the appearance of the steel two-column radiator is smooth, smooth, and free of obvious scratches and color differences; Whether the weld is uniform, flat, free of slag inclusion and porosity; Whether the coating has strong adhesion and consistent color, etc.
Size inspection: measure whether the dimensions of the steel two-column radiator meet the requirements of the design drawings, such as height, width, thickness and other parameters are accurate and consistent.
Fourth, the principle. The manufacturing principle of the steel two-column radiator is mainly based on the principle of heat transfer, specifically, when the steel two-column radiator receives the heat medium (hot water or steam), the heat will be transferred from the heat medium to the steel pipe and heat sink of the radiator through heat conduction. The heat is then transferred through the heat sink into the surrounding air. In this process, the air convection, the heat is evenly distributed to all parts of the room, so as to achieve the purpose of increasing the indoor temperature. The working principle of steel two-column radiators is mainly based on the second law of thermodynamics, that is, the direction of spontaneous transfer of heat is from high-temperature objects to low-temperature objects. In this case, the hot water inside the radiator flows through the pipes, transferring its heat to the metal material of the radiator. Due to the high thermal conductivity of metals, they quickly transfer heat to the surface of the radiator, thus warming the indoor air.
The heat dissipation effect of the steel two-column radiator is also affected by a variety of factors, such as the design, specification, material, heat medium temperature, external air temperature, area in contact with the air and air flow rate. Therefore, when selecting and using steel two-column radiators, these factors need to be considered comprehensively to obtain the best heat dissipation effect.