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Tempered and tempered stripped round steel is a type of steel that has undergone special processing. The following is a detailed introduction to it:
Definition and characteristics
Definition: Tempered and tempered stripped round steel refers to round steel that has undergone quenching and tempering treatment and stripping treatment. Quenching and tempering treatment is a process of adjusting the metallographic structure inside steel through heating, insulation, quenching, and tempering to achieve the required mechanical properties. Peeling treatment is the process of processing the surface of steel using a peeling machine to remove the oxide layer and impurities on the surface, in order to improve its surface quality and mechanical properties.
Characteristics: Tempered and tempered stripped round steel has high strength, high toughness, good corrosion resistance, and wear resistance. These characteristics make quenched and tempered stripped round steel widely used in multiple fields.
Quenching and tempering process
Quenching and tempering treatment is one of the key processes for quenching and tempering stripped round steel, and its process flow is as follows:
Heating: Place the steel in a heating furnace and heat it to the austenitizing temperature (usually 750 ℃ -900 ℃). During the heating process, overheating should be avoided to avoid affecting the performance of the steel.
Insulation: Maintain the steel at the austenitizing temperature for a certain period of time (usually 30-60 minutes) to fully austenitize the steel. Short or long insulation time can affect the performance of steel.
Quenching: Quickly cool the steel to the martensitic transformation temperature (usually -70 ℃ -50 ℃) to transform austenite into martensite. The commonly used quenching methods include water quenching and oil quenching, and the appropriate quenching method should be selected according to the size and shape of the steel.
Tempering: Heat the quenched steel to the tempering temperature (usually 150 ℃ -650 ℃) and maintain it for a certain period of time to gradually transform martensite into tempered structure. Tempering can improve the toughness and corrosion resistance of steel, and the appropriate tempering temperature and time should be selected according to actual needs.
Cooling: Naturally cool the tempered steel to room temperature to obtain the desired mechanical properties.
Peeling process
Peeling treatment is one of the important processes for surface processing of quenched and tempered peeled round steel, and its process flow is as follows:
Surface cleaning: Clean the surface of steel to remove impurities such as oil stains, rust, and oxide layers. The commonly used cleaning methods include chemical cleaning and mechanical cleaning.
Clamping and positioning: Clamp the steel onto the fixture of the peeling machine to ensure accurate positioning and prevent vibration or displacement during the processing.
Peeling treatment: Start the peeling machine to process the surface of the steel. Select appropriate cutting tools and processing parameters (such as speed, feed rate, etc.) based on the material and thickness of the steel to ensure processing quality and efficiency.
Matters needing attention
Material selection: When choosing quenched and tempered stripped round steel, appropriate materials and specifications should be selected according to the specific usage environment and requirements.
Processing: During the processing, it is necessary to strictly follow the process requirements to ensure processing quality and efficiency.
Inspection: Inspection of quenched and tempered stripped round steel is an important step in ensuring its quality. Regular inspections of the mechanical properties and chemical composition of steel should be conducted to ensure compliance with relevant standards and requirements.
In summary, quenched and tempered stripped round steel is a type of steel with excellent performance and has a wide range of applications in multiple fields. Strict adherence to relevant requirements should be followed in material selection, processing, and inspection to ensure their quality and performance.