What are Q345B steel plate flaw inspection and normalization

Q345B steel plate flaw inspection/detection is to detect cracks or defects inside the steel plate. Commonly used inspection methods are: X-ray inspection, ultrasonic inspection, magnetic particle inspection, penetration inspection, eddy current inspection, γ-ray inspection, fluorescent inspection, and color inspection. Physical inspection is the non-destructive inspection without chemical changes. There does not seem to be the word normalizing, only quenching. Quenching is a metal heat treatment process that heats a metal workpiece to a suitable temperature and maintains it for a period of time, and then immerses it in a quenching medium for rapid cooling. Commonly used quenching media are brine, water, mineral oil, air and so on. Quenching can improve the hardness and wear resistance of metal workpieces, so it is widely used in various tools, molds, measuring tools and parts that require surface wear resistance (such as gears, rolls, carburized parts, etc.). Through the combination of quenching and tempering at different temperatures, the strength, toughness and fatigue strength of metals can be greatly improved, and the coordination between these properties (comprehensive mechanical properties) can be obtained to meet different requirements for use.

Q345B steel plate cutting process

For the Q345B steel plate cutting production and processing, heating must also be carried out early, and some plates are very prone to cracks after entering the cutting step, and sometimes they are caused by too low temperature. The situation must be solved by heating early, so that the temperature of the board will start to rise slowly, and then the cutting can be carried out according to the flame gun. The probability of cracks in the Q345B raw materials for cutting is very low, and the quality of the board is also guaranteed to a certain extent.