Analysis on the Causes of NM450 Steel Plate Bending and Cracking
Introduction
NM450 steel plate is a kind of wear-resistant plate with excellent comprehensive mechanical properties. It has wear-resistant, impact-resistant, high strength and other properties, which can increase the service life of mechanical equipment and reduce production costs. In the actual application process of NM450 steel plate, bending and cracking will occur due to various reasons.
Main body
1. Thermal effect
When NM450 steel plate is heated to a certain temperature, its mechanical properties will change, resulting in non-uniform stress on the surface. At this time, if the thickness and temperature change, it will cause deformation and cracking of the NM450 steel plate.
2. Inadequate pre-treatment
If the pre-treatment before welding or riveting of NM450 steel plate is not well done, there will be residual stress, resulting in cracking and bending of NM450 steel plate.
3. Unreasonable welding or riveting parameters
When welding or riveting NM450 steel plate, due to improper parameters, stress concentration will occur on the surface of the steel plate, resulting in deformation or cracking of the steel plate.
4. Stress value
When NM450 steel plate experiences very large external forces, the tensile and compressive strength of the steel plate will be exceeded and bending and cracking will occur.
5. Poor quality
If the quality of NM450 steel plate is poor, it will cause bending and cracking of NM450 steel plate due to natural reasons.
NM450 steel plate is easy to cause bending and cracking due to thermal effect, inadequate pre-treatment, improper welding or riveting parameters, large stress value, and poor quality of NM450 steel plate. In order to ensure the normal use of NM450 steel plate, it is necessary to avoid the above conditions.
(Figure 1: NM450 steel plate bending and cracking under thermal effect))
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