摘要:
The present invention relates to ferritic-austenitic stainless steel oriented to have low Ni which is excellent in corrosion resistance, particularly in corrosion resistance in a neutral chloride environment, and has high “uniform elongation”—a factor governing workability—and a method of production for the same.There are independently provided ferritic-austenitic stainless steels and methods of production for the same particularly having a corrosion resistance in a neutral chloride environment satisfying PI value(=Cr+3Mo+10N−Mn)≧18% and having a uniform elongation satisfying −10≦Md≦110 (where Md=551−462({C}+[N])−9.2[Si]−8.1[Mn]−13.7[Cr]−29[Ni]−29[Cu]−18.5[Mo], where [ ] is composition (mass %) in the austenite phase, and { } is average composition (mass %))
摘要:
This ferrite-austenite stainless steel sheet includes: in terms of mass %, C: 0.1% or less; Cr: 17 to 25%; Si: 1% or less; Mn: 3.7% or less; Ni: 0.6 to 3%; Cu: 0.1 to 3%; and N: 0.06% or more and less than 0.15%, with the remainder being Fe and inevitable impurities, wherein the steel sheet has a two-phase structure consisting of a ferrite phase and an austenite phase, a volume fraction of the austenite phase is in a range of 15 to 70%, and in a sheet plane (ND) of a center of a sheet thickness, grains of the ferrite phase having a crystal orientation satisfying ND//{111}±10° and grains of the ferrite phase having a crystal orientation satisfying ND//{101}±10° are present in a total content of 10% by area or more.
摘要:
The invention provides structural component for an automobile, two-wheeled vehicle or railcar excellent in impact-absorption property, shape fixability and flange cuttability, and method for producing the same, which structural component has a hat-like shape including vertical walls and flanges, wherein distal ends of the flanges contain 20 vol % or greater of austenite phase and have a cross-section hardness expressed as Vickers harness of 150˜350, and a center regions of the vertical walls have, in a common cross-section with the flanges, a content of deformation-induced martensite phase exceeding that of the distal ends of the flanges by 10 vol % or greater and a cross-section hardness expressed as Vickers hardness that exceeds that of the distal ends of the flanges by 50 or greater.
摘要:
A workpiece holding jig for holding a workpiece having a plurality of first dividing lines extending in a predetermined direction and a plurality of second dividing lines formed in a direction intersecting the plurality of first dividing lines on the workpiece holding table of a processing machine for cutting the workpiece along the plurality of first dividing lines and the plurality of second dividing lines, wherein the workpiece holding jig has a plurality of through-grooves corresponding to the plurality of first dividing lines and the plurality of second dividing lines formed on the workpiece, a plurality of suction-holes which are open at the top and formed at positions corresponding to a plurality of areas sectioned by the plurality of first dividing lines and the plurality of second dividing lines of the workpiece and suction-passages that are formed at positions where they do not intersect the plurality of through-grooves and connected to the plurality of suction-holes.
摘要:
A high-strength hot-rolled steel sheet excellent in shape fixability having ferrite or bainite as the phase of the largest volume percentage, satisfying all of the following at least at ½ sheet thickness: a mean value of X-ray random intensity ratio in the orientation component group of {100} to {223} to X-ray random diffraction intensity ratio of at least 2.5; a mean value of X-ray random intensity ratio in the three crystal orientation components of {554} , {111} , and {111} to X-ray random diffraction intensity ratio of 3.5 or less; an X-ray intensity ratio to X-ray random diffraction intensity ratio at {100} of at least the X-ray random intensity to X-ray random diffraction intensity ratio at {211} ; and an X-ray random intensity ratio to X-ray random intensity ratio diffraction intensity ratio at {100} of at least 2.5, having at least one of an r-value of the rolling direction and an r-value of a direction perpendicular to the rolling direction of not more than 0.7, having an anisotropy ΔuE1 of uniform elongation of not more than 4%, having an anisotropy ΔLE1 of local elongation of at least 2%, and having an ΔuE1 of not more than the ΔLE1.
摘要:
A workpiece holding jig for holding a workpiece having a plurality of first dividing lines extending in a predetermined direction and a plurality of second dividing lines formed in a direction intersecting the plurality of first dividing lines on the workpiece holding table of a processing machine for cutting the workpiece along the plurality of first dividing lines and the plurality of second dividing lines, wherein the workpiece holding jig has a plurality of through-grooves corresponding to the plurality of first dividing lines and the plurality of second dividing lines formed on the workpiece, a plurality of suction-holes which are open at the top and formed at positions corresponding to a plurality of areas sectioned by the plurality of first dividing lines and the plurality of second dividing lines of the workpiece and suction-passages that are formed at positions where they do not intersect the plurality of through-grooves and connected to the plurality of suction-holes.
摘要:
This hot-rolled ferritic stainless steel sheet has a steel composition containing, in terms of % by mass: 0.02% or less of C; 0.02% or less of N; 0.1% to 1.5% of Si; 1.5% or less of Mn; 0.035% or less of P; 0.010% or less of S; 1.5% or less of Ni; 10% to 20% of Cr; 1.0% to 3.0% of Cu; 0.08% to 0.30% of Ti; and 0.3% or less of Al, with the balance being Fe and unavoidable impurities, and the hot-rolled ferritic stainless steel sheet has a Vickers hardness of less than 235 Hv.
摘要:
A non-crystalline amorphism of oxidized glutathione is produced by drying a crystal of oxidized glutathione hexahydrate at a temperature of 40 to 90° C.
摘要:
The present invention focuses on Sn and has as its problem to not only improve the corrosion resistance and rust resistance of Cr-containing ferritic stainless steel but also improve the ridging resistance.The present invention derives the relationship between Ap, which shows the γ-phase rate at 1100° C. due to a predetermined ingredient, and Sn in ferritic stainless steel which becomes a dual phase structure of α+γ in the hot rolling temperature region, applies and adds Sn, and hot rolls the steel to give a total rolling rate of 15% or more in 1100° C. or higher hot rolling to thereby obtain ferritic stainless steel sheet which has good ridging resistance, which also has excellent corrosion resistance and rust resistance, and which can be applied to general durable consumer goods: 0.060≦Sn≦0.634−0.0082Ap 10≦Ap≦70
摘要:
A contact according to the present invention comprises a plate-shaped first plunger contacting one member, a plate-shaped second plunger contacting the other member in a state of being overlapped with the first plunger and conducting electricity between the one member and the other member in cooperation with the first plunger, and a compression coil spring which is a member coupling the first plunger with the second plunger in a state where contact pieces thereof are in opposite directions from each other, covering outer circumferences of coupling portions of the first plunger and the second plunger, abutting on spring receiving portions of the respective plungers, and supporting the respective plungers to be relatively slidable. In an electrical connecting apparatus, the contacts are incorporated.