In recent years, hot-rolled pickling coil, as a cost-effective material, has been widely used in various fields, especially in the automobile, home appliances, machinery and light industry hardware industries. Its application in these industries is mainly due to its excellent performance and multiple advantages. This article will delve into the production process of hot rolled pickling coil, its main applications in the automotive industry, and the application advantages of EPS (Advanced High strength steel).
Production Technology of Hot Rolling Pickling Coil
In order to better understand the application advantages of hot-rolled pickling coils, it is first necessary to understand the production process. Hot-rolled pickling coils are usually prepared by the following steps:
Hot rolling process
First, the raw billet is heated to high temperatures, usually above 1100°C. At high temperatures, the billet becomes prone to plastic deformation. Then, through a series of rolling machinery, the billet is pressed into the desired shape and size. This stage aims to adjust the shape of the steel and improve its mechanical properties.
Pickling process
The pickling process is one of the key steps in the preparation of hot rolled pickling coils. In this process, the hot-rolled coil is soaked in an acidic solution, usually dilute hydrochloric acid. The main purpose of pickling is to remove oxidation layers, rust spots and other contaminants from the surface of steel. This step not only improves the surface quality, but also fine-tuning the chemical composition of the steel to meet the performance requirements of the specific application.
The Main Application of Hot Rolled Pickling Coil in the Automotive Industry
Hot rolled pickling coil has a wide range of applications in automobile manufacturing, which is reflected in the following aspects:
Instead of cold rolled coil
Hot-rolled pickling coil can often replace cold-rolled coil in automobile manufacturing, thus saving cost for downstream steel enterprises. Its high strength and excellent performance make it ideal for the manufacture of body structures, safety components and mechanical parts. By using hot-rolled pickling coils, automakers are able to produce vehicles more economically without compromising quality.
Surface quality enhancement
Compared with the ordinary hot-rolled plate, the hot-rolled pickling coil removes the surface oxide sheet and improves the surface quality of the steel. This not only facilitates the subsequent processing processes such as welding, oiling and painting, but also improves the corrosion resistance of the body structure and prolongs the service life of the car.
Dimensional accuracy improvement
The hot rolled pickling coil with flat treatment can make the shape of the plate change to a certain extent, thus reducing the deviation of the roughness, improving the surface finish and enhancing the appearance. This is important for manufacturing high-precision automotive parts and ensuring consistency of appearance.
Application Advantages of EPS
In the automotive industry, EPS (Expanded Polystyrene) has some application advantages in combination with steel plates, which mainly involve lightweight, sound insulation, crash safety and production efficiency. The following are some application advantages of EPS when used in combination with steel plate:
Lightweight
The combination of EPS and steel plate can reduce the overall weight of the car. This is very helpful for increasing fuel efficiency, reducing emissions and improving the performance of the suspension system. Due to the lightweight nature of EPS, it can replace some heavy materials and reduce body weight without sacrificing strength and safety.
Sound and Thermal Insulation
EPS has excellent sound and thermal insulation properties that reduce noise levels inside the vehicle and provide a quieter, more comfortable driving experience. It can be used as a sound insulation material to reduce the effect of noise from the engine, wheels and external environment to the interior.
Collision Energy Absorption
EPS has good energy absorption performance and can absorb energy during a collision, reducing the damage to the vehicle and occupants. It is often used to manufacture the front and rear bumpers of vehicles to improve crash safety.
Easy to Form and Process
EPS is easy to cut and form and can be made into a variety of shapes to suit the needs of different automotive parts. This helps reduce waste and increase productivity in the manufacturing process.
Reduce Vibration and Vibration Transmission
EPS can be used to reduce vibration and vibration transmission on vehicle components such as chassis and seats, improving driving comfort.
Environmental Protection
EPS is a recyclable material that helps reduce waste and waste of resources. At the same time, it does not contain harmful substances such as CFCs and HCFCs.
Cost Effective
EPS is a relatively cheap material compared to other materials and helps control the cost of automotive manufacturing.
Combined with the above advantages, the use of EPS in combination with steel plates can achieve lightweight, improve crash safety, reduce noise levels, improve production efficiency and reduce costs in automotive manufacturing. These features help meet the safety, environmental and sustainability requirements of the modern automotive industry.
Typical Hot Rolling Pickling Production Line
In order to better understand the production process of hot rolled pickling coil, we can take a look at the main steps of a typical hot rolled pickling production line:
Hot rolling process
In a typical hot-rolling pickling line, the raw billet is first heated to high temperatures, usually above 1100°C. This high temperature treatment helps the billet become more prone to plastic deformation. Then, through a series of rolling machinery, the billet is pressed into the desired shape and size to meet the requirements of different applications.
Pickling process
The pickling process usually follows the hot rolling process. In this step, the hot-rolled coil is soaked in an acidic solution, usually dilute hydrochloric acid. The purpose of pickling is to remove surface oxidation layers, rust spots and other contaminants, thereby improving the surface quality of the steel and purifying the chemical composition.
Surface treatment
In some production lines, hot-rolled pickling coils may require additional surface treatment steps, such as mechanical removal of surface impurities and descaling. These steps help to further improve the appearance quality of the steel and improve its finish and flatness.
Application of EPS in Descaling of Hot Rolled Surface
In addition to its application in automotive manufacturing, EPS also plays a key role in the production of hot rolled pickling coils, especially in the application of descaling on hot rolled surfaces. Descaling refers to the process of removing oxidizing layers, rust spots and other unclean substances from the surface of hot rolled pickling coils. This step is essential to ensure the surface quality of the steel, especially in automotive manufacturing, where surface quality is strictly required for the perfection of the car's appearance and finish.
The high strength and formability of EPS make it ideal for descaling hot rolled surfaces. EPS can be surface-treated either mechanically or by rubber rollers in the pickling process to remove oxide layers and other unclean substances. This not only improves the flatness of the surface, but also helps to reduce surface defects such as scratches and potholes, improving the appearance quality of the steel.
Hot-rolled pickling coil has become one of the key materials in the automobile manufacturing industry because of its excellent performance and multi-functional characteristics. Its main applications in the automotive industry, as well as the application advantages of EPS (Advanced high strength steel), make it play a vital role in the future of automotive manufacturing. Through rational production process, surface treatment and EPS application, hot rolled pickling coil can meet the increasing automotive manufacturing needs, providing safer, lighter and more environmentally friendly vehicles. The automotive industry is constantly exploring innovations to use these materials and technologies to advance the industry and meet the challenges of the future. The combination of hot-rolled pickling coils and EPS has injected new impetus into the automotive industry and led the development of future automobiles.