What are the effects of heat treatment processes on steel structures?

The steel structure device formed in the steel structure workshop is an environmentally friendly and energy-saving structure. In the initial forming process of the steel structure, heat treatment is required. The heat treatment method of the present invention can effectively improve the practicability and quality of metal products, and can consolidate the basic framework and composition of the main body of the building. How many steps are there in the heat treatment process? What are the effects of heat treatment processes on steel structures?

A significant advancement was the use of rotary drum furnaces for gas leakage in industrial production from 1901 to 1925; the development of metal physics in the 1930s and the transplantation and application of other new technologies led to the further development of metal heat treatment processes. . A dew point potentiometer appears to make the carbon potential of the furnace atmosphere controllable. Later, the use of carbon dioxide infrared meters was developed. Oxygen probe, etc., to further control the carbon potential of the atmosphere in the furnace; in the 1960s, heat treatment technology used the effect of plasma field to develop ion nitriding and carburizing processes; the application of laser and electron beam technology gave metal a new Surface heat treatment and chemical heat treatment methods.

1 Tempering: Heat the quenched workpiece to an appropriate temperature below the critical point AC1 for a certain period of time, and then use a method that meets the requirements to cool it, and gradually heat the structure and performance required by the process.

2 Carbonitriding of steel: Carbonitriding is a process in which carbon and nitrogen are simultaneously infiltrated into the steel surface. Traditionally, carbonitriding, also known as cyanidation, widely separates medium temperature gas carbonitriding and low temperature gas carbonitriding (that is, gas nitrocarburizing). The main purpose of medium temperature gas carbonitriding is to improve the hardness, wear resistance and fatigue strength of steel. Low temperature gas carbonitriding is mainly nitriding, and its main purpose is to improve the wear resistance and seizure resistance of steel.

3 Quenching and tempering treatment: generally the heat treatment that combines quenching and tempering with high temperature tempering is called quenching and tempering treatment. Quench and temper a wide variety of important structural parts, especially coils, bolts, gears and shafts that work under alternating twists. After quenching and tempering, a tempered sorbite structure is obtained, and its mechanical properties are almost the same hardness as a normalized sorbite structure. Its hardness is constant and high temperature tempering temperature, and the tempering stability of steel and the cross section of the workpiece. The size is related, generally between HB200-350.

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