SMA400AP steel exhaust pipe weldability

The strength indexes of SMA400AP steel exhaust pipe pipeline steel mainly include tensile strength and yield strength. At the same time, the yield strength ratio (yield strength to tensile strength ratio) of pipeline steel is also required, which is generally in the range of 0.85-0.93. Pipeline steel shall have enough high impact toughness (crack initiation and crack arrest toughness). For the base metal, when the toughness of the SMA400AP steel exhaust pipe material meets the requirements of crack arrest, its toughness generally can also meet the requirements of crack prevention.

In the use of wear-resistant plate, SMA400AP steel exhaust pipe, according to the different working environment, the severity of friction and wear is different. Moreover, the wear mechanism is different with different materials and working conditions. The well-known wear mechanisms include adhesive wear, corrosion wear, fatigue wear, erosion wear, fretting wear, impact wear and so on. The corrosive wear of wear-resistant plate refers to the chemical reaction or electrochemical reaction between the workpiece and the environmental medium to form corrosion products.

At present, the cutting thickness limit of laser cutting is 20 mm. However, it should be noted that oxygen will be added into the laser beam to cut 20 mm thick SMA400AP steel exhaust pipe steel plate, which will form a thin oxide film on the cutting surface, which may affect the cutting quality, Therefore, attention should be paid to this point to avoid problems.

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