The sound wave enters the
stainless steel clad plate material at certain angles, and the multi-layer composite material has a strong anisotropy effect of heterogeneity. There are two test methods for oblique incidence to this composite:
A scattering model, which employs a single probe, the scattering source in the composite is differentiated as a function of fiber orientation angle;
Secondly, when the Lamb wave mode leaks, it uses two probes placed in a closed way, the probes can be placed on the same side of the mirror and Lamb wave component laminate or relative leakage, on the same side of the leak The Lamb wave receiver forms on both sides of the zero-pressure zone. Many discontinuities can be detected by both oblique incidence.
Grade I sides on the surface of the steel plate are not allowed to have a thickness tolerance of more than half the depth of the steel plate, and do not allow the plate to be less than the minimum thickness of general minor pitting, minor scratches and roller printing.
The surface of the surface of the stainless steel clad plate is allowed to have a depth of not more than half the thickness tolerance of the steel plate, and the stainless steel clad plate is not less than the allowable minimum thickness of the following defects. Front: Generally slight pitting, minor scratches, dents and roller printing. WS: General slight pitting, local deep pitting, slight scratches, indentations, or dents. The steel plates on both sides are beyond the range of allowable defects with the grinding wheel to remove, the obvious positive shall not be more than half the thickness of the steel cladding depth, and the reverse shall not be larger than the tolerance of the plate.
The mechanical properties of the cold-rolled stainless steel clad plate should meet the corresponding standards of the basic materials. When the deep-drawing steel wire drawing material is selected at the base layer, the mechanical properties should meet the requirements of Table 4. The outer edge of the specified bending part is allowed to produce cracks, Laminar composite interfaces are not allowed.
The stainless steel clad plate and the standard do not have the stipulation that the bending test can not be done for the bending test; if the demand side, the bending diameter D = 4 alpha. Clad steel plate bending test during cold bending test of symmetrical clad steel plate, asymmetrical.
