In two minutes, understand the four fires in industry (Annealing, Normalizing, Quenching, Tempering)
The four fires in industry can be summarized in simpler terms as follows: Annealing: giving metal a "full body massage" by heating it and then slowly cooling it down. Normalizing: allowing the metal to "strengthen and condition" by heating it and then cooling it in the air. Quenching: making the metal "harden rapidly" by heating it and then suddenly placing it in water or oil for quick cooling. Tempering: "reducing the fire" of the quenched metal by reheating it and then cooling it again.
10
2022
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01
The application of titanium in steel and its impact
Titanium has a strong affinity for elements such as nitrogen, oxygen, and carbon, making it an excellent deoxidizer and an effective element for fixing nitrogen and carbon. In steel, the compounds formed by titanium and carbon (TiC) have a very strong bonding force and high stability, and they only slowly dissolve into the iron solid solution at high temperatures (above 1000°C).
12
2021
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11
The material and manufacturing process of springs
Springs are widely used in power tools, such as compression springs for key rebound, tension springs for the reset of the electric saw guard, torsion springs for the pressing rebound of the switch panel, spiral springs for carbon brush compression, disc springs used for clutch disengagement, and wave springs for axial elastic compression.
12
2021
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11
In the field of materials science and engineering, surface treatment is a crucial technology that not only improves the appearance of materials but also enhances their physical and chemical properties. Polishing, shot blasting, sandblasting, shot peening, and powder coating are five common surface treatment techniques. Although their purpose is to improve the material surface, their principles and applications vary significantly. This article will provide an in-depth comparison and discussion of these five techniques from the aspects of definition, principle, application, and advantages and disadvantages.
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2021
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