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How to correctly set the annealing furnace temperature
1. Annealing furnace temperature setting method
A. Select temperature according to material type
Different materials have different annealing temperatures. Generally, it is necessary to select the appropriate temperature according to the material type and requirements. For example, carbon steel generally has an annealing temperature between 700-800℃, while high-speed steel requires a higher temperature between 1100-1200℃. Therefore, it is necessary to first understand the material type and annealing requirements, and then determine the temperature range based on relevant information or experience.
B. Consider the heat treatment effect
In addition to the material type, it is also necessary to consider the effect of the annealing furnace temperature on the heat treatment effect. Generally speaking, too high or too low temperature will have an adverse effect on the heat treatment effect. For example, too high a temperature can easily lead to grain growth and reduced hardness, while too low a temperature may cause insufficient annealing. When setting the furnace temperature, it is necessary to select a temperature range that meets the heat treatment requirements based on the specific materials and requirements.
2. Annealing furnace temperature adjustment and control
A. Adjust the furnace temperature
Generally speaking, it takes multiple tests to adjust the annealing furnace temperature. First, heat the furnace to the set temperature, and then put the sample into the furnace for testing after the furnace temperature stabilizes, observe the sample state and record the temperature. By continuously testing and fine-tuning the temperature, the appropriate temperature range is finally determined.
B. Control the furnace temperature
In addition to adjusting the temperature, it is also necessary to control the temperature fluctuation range. Common temperature control methods for annealing furnaces include PID control and PLC control. Among them, PID control is a method of calculating and outputting the control amount based on the error between the feedback value of the actual measured temperature and the set value to achieve temperature control. PLC control is to achieve automatic control of the furnace temperature by processing and controlling the furnace temperature sensor signal.
In short, when selecting and setting the annealing furnace temperature, it is necessary to consider the material type, requirements and heat treatment effect, and conduct multiple tests and adjustments to finally determine the appropriate temperature range. And during the heat treatment process, it is necessary to pay attention to controlling the furnace temperature fluctuation range to avoid poor heat treatment effect due to excessively high or low furnace temperature.
Strong Metal’s customized continuous stainless steel strip bright annealing line
Usage: Used for continuous bright annealing of stainless steel strips, plain steel, alloy steel, spring steel, copper, etc.
Thickness: 0.1~3MM
Width: 250~1450MM
Natural gas (LNG), liquefied petroleum gas (LPG), and diesel can be selected as the main heating methods of the furnace.
The unit of the stainless steel strip bright annealing line consists of an inlet section, an inlet looper, a degreasing section, a process section, an outlet looper, and an outlet section.
It adopts automated control to form an ultra-highly integrated and precision-controlled production line, realizing technological integration and innovation of stainless steel cold-rolled strip continuous lines.
Features: fast heating speed, low energy consumption, low cost, safe and reliable, high degree of automation and customizable.
Scope of application: widely used in metallurgy, special steel, and precision strip industries.