Abstract: A TIG welded joint in a high-Mn content steel material that can be formed with reduced occurrence of hot cracking during the welding process and has high strength and excellent cryogenic impact toughness. In the TIG welded joint, the high-Mn content steel material has a chemical composition including, by mass %, C: 0.10 to 0.80%, Si: 0.05 to 1.00%, Mn: 18.0 to 30.0%, P: 0.030% or less, S: 0.0070% or less, Al: 0.010 to 0.070%, Cr: 2.5 to 7.0%, N: 0.0050 to 0.0500%, and O: 0.0050% or less, the balance being Fe and incidental impurities, and a weld metal has a chemical composition including C: 0.10 to 0.80%, Si: 0.05 to 1.00%, Mn: 15.0 to 30.0%, P: 0.030% or less, S: 0.030% or less, Al: 0.100% or less, Cr: 6.0 to 14.0%, and N: 0.100% or less, the balance being Fe and incidental impurities.

Abstract: A TIG welding filler metal is provided that has a composition including, by mass %, C: 0.20 to 0.80%, Si: 0.15 to 0.90%, Mn: 15.0 to 30.0%, P: 0.030% or less, S: 0.030% or less, Cr: 6.0 to 15.0%, and N: 0.120% or less, the balance being Fe and incidental impurities. Where necessary, the filler metal may contain one or two selected from Ni and Mo, may further contain one, or two or more selected from V, Ti, and Nb, and may additionally contain one, or two or more selected from Cu, Al, Ca, and REM. This configuration reduces the occurrence of welding cracks during TIG welding, that is, realizes excellent hot crack resistance, and allows for easy production of a weld joint having high strength and excellent cryogenic impact toughness.

Abstract: An outside-insulated electronic element of a chip type has a body including an electronic element and a plate electrode which extends from the body of the element and is bent along a side surface and a bottom surface of the body of the element. The body of the electronic element including the plate electrode has a trapezoidal shape or a bow or arcuate shape. In this way, the gaps between the electronic elements when placed in a disk package can be reduced to a minimum.

Abstract: Respective arc-shaped portions of two cathode lead terminals are arranged in opposition across a capacitor element to surround the side periphery of the capacitor element. These arc-shaped portions have straight portions at respective one open ends, which straight portion extends in axial direction of the capacitor element, namely in a direction along which an anode lead terminal provided on the end face of the capacitor element extends. The straight portions of the cathode lead terminals also arranged in opposition across the capacitor element. Accordingly, two straight portions of the cathode lead terminals are aligned across the anode lead terminal. By this, a three-terminal dip type capacitor which can achieve high reliability of connection between the cathode lead terminals and the capacitor element and reduction of production cost.

Abstract: Disclosed herein are a piezoelectric actuator control apparatus comprising a capacitor connected in series with a piezoelectric actuator that has electrodes, and a control device that controls the voltage applied to the piezoelectric actuator such that the voltage of the capacitor will reach a predetermined value, as well as a piezoelectric actuator control apparatus comprising an integrating circuit connected to one electrode of a piezoelectric actuator that has electrodes, and a control device that controls the voltage of the other electrode of the piezoelectric actuator such that the output of the integration circuit will assume a predetermined magnitude.