Factors affecting the quality of NM450 plate material

X-rays or γ-rays are projected on the surface of the steel plate, and rubber can be placed on the other side of the steel plate. Since the radiation propagates through the steel plate and is absorbed, the intensity is different due to the presence or absence of defects, so the film can record the shape and position of the defects. This NM450 plate material method is sensitive to the detection of common steel plate defects such as slag inclusions, porosity and pores. The disadvantage is that it is difficult to find the specific depth of the defect and it is not easy to find cracks.

NM450 plate material, The wear-resistant composite plate is quenched once and tempered at low temperature. The quenching temperature is 820-850℃ or 780-810℃. If the strength of the core is required to be higher, it should be quenched at 820-850℃ with low carbon M at the core. If the surface hardness is required to be high, the grain size can be refined by quenching at 780-810℃. It is suitable for solid carburized carbon steel and low alloy hardfacing wear-resistant composite plate workpieces, and coarse grain steel carburized by gas and liquid.

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Available steel plate types: NM450 plate material, carbon structural steel plate, low alloy high strength steel plate, bridge steel plate, building structural steel plate, shipbuilding and offshore platform steel plate, boiler and pressure vessel steel plate, mold steel plate, alloy structural steel plate, oil and gas transmission pipeline steel plate, high strength and high toughness steel plate, corrosion-resistant steel plate, composite steel plate, wear-resistant steel plate, etc.