摘要:
PROBLEM TO BE SOLVED: To provide a surface treatment plating material which suppresses generation of a whisker, maintains excellent solderability and low contact resistance even after exposed under a high temperature environment, and achieves low insertion force of a terminal and a connector.SOLUTION: A whisker-free surface treatment plating material is a plating material where a lower layer made of Ni or a Ni alloy and an upper layer made of Sn or a Sn alloy are sequentially formed on a metal substrate. P exists on the surface of the upper layer.
摘要:
PROBLEM TO BE SOLVED: To provide a surface-treated steel plate for a battery container capable of suppressing elution of iron or nickel into a nonaqueous electrolyte when being used as a battery container for a battery using the nonaqueous electrolyte, and preventing effectively generation of pitting-corrosion or liquid leak, or decline in a battery characteristic.SOLUTION: A surface-treated steel plate for a battery container for forming a battery container for a battery using a nonaqueous electrolyte as an electrolyte, has an iron-nickel diffusion layer formed by performing thermal diffusion treatment after forming a nickel plating layer at least on a surface on the inner surface side of the battery container of the steel plate. In the surface-treated steel plate for the battery container, the ratio of Ni to Fe in the outermost layer of the iron-nickel diffusion layer is 7.5 or less in terms of the molar ratio of Ni/Fe, and the thickness of the iron-nickel diffusion layer is 0.6 μm or more.
摘要:
A method for manufacturing a coated part having very high mechanical properties using hot forming techniques. The method includes:-providing an annealed steel strip or blank or pre-shaped part that was coated with a metal or metal alloy before the annealing-if a strip is provided, cutting a blank from the strip before or after the annealing-optionally forming a pre-shaped part from the blank-heating the blank or preshaped part to a temperature of 500° C. at an average heating rate of 16° C./s or more-further heating the blank or pre-shaped part to a temperature between 700 and 1000° C.-hot forming the blank or preshaped part into a hot formed part-hardening the hot formed part. A method for manufacturing a coated steel strip, blank or pre-shaped part, and a coated steel strip, blank or part and a hot formed part.