The key technologies in the rolling process of high-strength steel are springback prediction and deformation energy analysis.
Traditional high-strength newspapers mostly use national melting, bridge out and grain texture as the main strengthening means. In the process of use, although the specific load of the diffuseness is high, the reduction of elongation has brought great difficulties to the manufacture. However, the strengthening mechanism of advanced high-temperature testing is different from that of traditional high-strength steel. For example, dual-phase is based on phase transformation strengthening. Martensite is distributed in the ferrite matrix in the form of black, and the content is
5%-20 %, with the increase of the content of magnesium alloy, the strength of the dual-phase steel increases, and the forming strength is also greatly enhanced, which solves the problem of difficult forming to a certain extent.
In the process of rolling machine for sheet metal , springback affects the quality and stability of the final product design of the enterprise. All sheet metal forming technologies have springback. Generally speaking, the greater the strength, the greater the amount of rebound , because the working strength of advanced high-strength steel is much greater than that of traditional Chinese steel, so the springback phenomenon can be more obvious and difficult to predict. There are mainly the following main reasons:
Advanced high-strength steel stamping parts have high flow stress, yield force and hardening performance after stamping and forming, so that medium-pressure parts produce large elastic stress.
The rebound mechanism of advanced high-strength steel is different from that of ordinary steel, and the Bauschinger effect occurs when high-strength steel is reversely loaded
Features of Silver Press Roller Forming Machine
The conventional forming process of advanced high-diffusion steel plate is hot stamping. After heating, the peak of anti-opening ability is low, and the fluidity is increased, so that the peak is low. High energy consumption, high usage or high cost. Loading and forming is a processing method in which strip steel is used as the raw material and the final shape is gradually formed through the action of multiple rolls under normal temperature conditions.
Compared with the traditional Chinese technology, the green check molding process has many advantages. The flow forming process also enables many automobile commissioners who use advanced high-strength check panels to achieve high-quality and high-dynamic production, such as door inner panel reinforcement panels, silver panels, etc.
Roll forming lines has the following advantages
Continuous and uninterrupted processing, which is more efficient than traditional stamping and folding inspection process design, and lowers the production management cost of the enterprise.
The same production line of an enterprise can process a variety of workpieces of different lengths, with strong continuity of production and operation and strong versatility
The product has reasonable cross-section, high surface quality, small dimensional tolerance, rich variety and complete specifications, which not only meet the requirements of energy saving and emission reduction, but also meet the requirements of new materials and new technologies for more functions in the new century.
The flexibility and openness of the production form enable the silver bend forming production line to integrate various processes, such as stamping, coal jointing, embossing, etc., so that more spare parts can be produced.
The specific heat is high, the process is more energy-saving and environmentally friendly, the product shape is more flexible and reasonable, and it is more material-saving, quieter, and space-saving than the stamping process.
Research on roll forming process
The key technologies in the manufacturing process of high-strength steel are springback prediction and deformation energy analysis. The main methods of strengthening high-strength steel are solidification, bridge weaving and star weaving. Although its strength is higher than that of high-strength steel in the course of use, the peak value of the electric length has brought great problems to the system. However, the mixing mechanism of advanced high-strength steel is different from that of conventional high-strength steel. For example, I duplex is based on phase transformation strengthening. Maminite is distributed in the ferrite matrix in the shape of an island, and the content is 5% to 20%. With the increase of Maminite content, the strength of the duplex increases. , The forming ability is greatly enhanced, and the problem of shape or shape is solved to a certain extent. All calendar forming techniques have quasi-response questions. Generally speaking, the high-strength and high-strength velvet with high temperature and high strength must be far from the traditional Chinese steel grades, so the springback phenomenon can be more obvious and difficult to pass. Forecast, mainly for the following reasons:
(1) Advanced high-strength steel stamping parts have high flow stress, yield force and hardening properties after stamping and forming, so that stamping parts produce large elastic stress. (2) The springback mechanism of advanced high-strength steel is different from that of ordinary steel, and Bauschinger effect occurs when high-strength steel is reversely loaded
Roll Forming Machine Features
The conventional forming process of advanced high-strength steel plate is hot medium pressing. After heating, the peak of anti-deformation ability is low, and the flow is increased, thereby reducing the form accuracy. However, the equipment required for hot and stamping forming processes is complicated, and the maintenance cost and energy consumption are high. , the use cost is high, Yinyu forming uses strip steel as raw material, under normal temperature conditions, through the action of multiple rolls, a processing method that gradually forms the final plate shape.
Compared with the traditional stamping process, the radiation forming process has many advantages. The roll forming process also enables the high-quality and efficient production of many auto parts using advanced high-strength steel plates, such as the reinforced version of the inner panel of the car door. The tin press forming process has The following advantages
Continuous and uninterrupted processing, which is more efficient than traditional stamping and bending process design, and reduces the cost of production management of enterprises.The same production line of an enterprise can process a variety of workpieces of different lengths, with strong continuity of production and operation and strong versatility.
The product section is reasonable, the surface quality is high, the dimensional tolerance is small, the variety is rich, and the specifications are complete, which not only meets the requirements of energy saving and emission reduction, but also meets the requirements of new materials and new technologies for more functions in the new century.
The flexibility and openness of the production form enable the silver bending production line to integrate various processes, such as stamping, welding, embossing, etc., so that more spare parts can be produced.
It is more energy-saving and environmentally friendly than the thermal process, the product shape is more flexible and reasonable, and it is more material-saving, quieter and space-saving than the stamping process.
