Is numerical control Q355GNH weathering steel plate cutting good

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45Mn2 steel is a medium-carbon quenched and tempered steel with high strength, wear resistance and hardenability. The critical hardening diameter in oil is 10-25mm, and the critical hardening diameter in water is 22-45. After quenching and tempering, 45Mn2 alloy structural steel has good comprehensive mechanical properties and good machinability; but it has overheating sensitivity and temper brittleness tendency during heat treatment, easy to crack in water quenching, sensitive to white spots, low weldability and cold deformation plasticity and other shortcomings.

Try to use Q355GNH weathering steel plate high-quality alkaline covered electrode as much as possible, and don't use inferior electrode to save money. According to the theory of chromium poor, chromium carbide will be precipitated on the upper edge of the grain boundary of the weld and heat affected zone when the Q355GNH weathering steel plate temperature range is between 450 ℃ and 850 ℃, resulting in chromium poor grain boundary, which is insufficient to resist corrosion.

Thin steel 5mm to 10mm Q355GNH weathering steel plate stock list
5*2550*9200, 5.5*2500*10000, 5*2670*8500, 7*2260*8600, 6*2510*10400, 5*1860*12000, 8*2000*10000, 7*2000*8000, 8*2350*8600, 10*2500*8500, 8*2540*8200, 9*2500*9500, 10*2510*10600, 8*2400*6000, 10*2550*8500, 10*2800*6300, 10*1600*12000, 10*2000*6500, 10*2650*8300, 10*2800*6150, 10*2000*8600, 10*2150*5500.

The company has huge steel Q355GNH weathering steel plate products stock all the year round to meet the urgent needs of customers. For stock products, we can arrange delivery within 3 days. The transportation department and shipping department shall coordinate and follow up to update the progress to customers regularly, i.e. where the goods have arrived, so as to let customers not worry and rest assured. Think about what the customers think and what the customers are anxious about, solve problems for customers efficiently and effectively, is the direction of our unremitting efforts.

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