不銹鋼合せ鈑の研究 (II) : 合鈑の諸性質に及ぼす加熱の影響

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On the view point of the manufacture and the practical use of the stainless clad plate, the authors studied the effect of heating on the various properties of clad plate. The results of experiments and considerations, were stated as follows : - When the stainless clad plate was heated, various alloy elements in the contact face of both metals were diffused, and their diffusion increased as the temperature rises and the holding time increased. In case the clad plate was beated at temperature above 800℃, the alloy layer was made at the contact face by diffusion of elements. Once the alloy layer was presented, the binding strength of both metals was decreased. Therefore, the heating at high temperature must be avoided. Moreover, by travelling of the carbon in the mild steel to the stainless steel by diffusion, the corrosion resistant property of the stainless clad was presumed to be inferrior. Then, the heating at high temperature must be avoided and the lower carbon content in the base metal was found of advantage. The deflection produced in the clad plate by heating increases as the temperature rose and as the clad thickness increased. Specially, the deflection increased suddenly at about 800℃, because of the transformation contraction in the mild steel. When the clad plate was utilized at parts where the deflection by temperature change was remarkable such three layer clad plate must be selected which had same clad thickness at surface and bottom.
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不銹鋼合せ鈑の研究 (II) : 合鈑の諸性質に及ぼす加熱の影響

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