摘要:
According to one embodiment, an electronic apparatus is provided with a case, a module contained in the case and including a first hole portion and a connector, a cable connected electrically to the connector, a fixture which is inserted in the first hole portion and fixes the module in the case, and a cover which covers the connector, includes a second hole portion communicating with the first hole portion, and is fixed in combination with the module by the fixture.
摘要:
According to one embodiment, an electronic apparatus is provided with a semiconductor package, a heat receiving plate, and a gap adjusting member. The semiconductor package includes a substrate and a silicon die mounted on the substrate. The heat receiving plate is opposed to the silicon die and thermally connected to the silicon die. The gap adjusting member is disposed between the heat receiving plate and a region of the substrate apart from the silicon die and serves to reduce a gap which exists between the substrate and the heat receiving plate.
摘要:
A coating layer composed of a solder containing tin as the major component and a metal such as copper or silver which is the same as that contained in a external electrode in an amount greater than the eutectic concentration, is formed on the external electrode. The solder can suppress the solid-phase diffusion without formation of the barrier layer.
摘要:
A high nitrogen flux cored wire contains N and nitrogen compound (total converted value of N): 0.05 to 0.30 wt %, with respect to total weight of the wire, in stainless steel sheath and flux, and TiO.sub.2 : 4.0 to 8.0 wt %; ZrO.sub.2 : 0.5 to 4.0 wt %; SiO.sub.2 : 0.05 to 1.5 wt %; Al.sub.2 O.sub.3 : 0.05 to 1.5 wt %; metal fluoride (converted value of F): 0.02 to 0.7 wt %; and metal carbonate: less than or equal to 1.0 wt %; a content of Al.sub.2 O.sub.3 and SiO.sub.2 in total being restricted to be less than or equal to 2.5 wt %, with respect to total weight of the wire, in the flux. Since an appropriate amount of nitrogen is contained in the wire, superior corrosion resistance of the welded metal can be obtained. Also, since an appropriate amounts of the slag forming agent, alloying component and so forth are contained, it becomes possible to achieve high welding workability in all position welding.
摘要:
Provided is a stainless-steel flux cored wire electrode with excellent arc stability and good workability with less sputter generation, which can attain the overall sputter reduction and arc stability and can further prevent instantaneous arc disorders and sputter generation at a higher level to form a high-quality weld metal. A stainless-steel flux cored wire electrode comprising a flux filled in the stainless-steel housing at 10 to 30% to the total weight of the wire electrode, wherein the wire electrode temperature is measured and recorded on the recording chart of a temperature recorder, which chart is scaled in such a manner that the 100.degree. C. corresponds to 5 cm and the 100 mm wire electrode length corresponds to 1 cm, by passing electricity through appropriate two points, apart 300 mm to 1,000 mm from each other, in the wire electrode in the longitudinal direction, to electrically heat the wire electrode to 500.degree. to 1,000.degree. C., and wherein the ratio (K value=L1/L0) of the length (L1) of a temperature-distribution curve on the recording chart to the base line length (L0) corresponding to the measured wire electrode length is 2.5 or less, preferably 1.5 or less.
摘要:
An auxiliary propelling structure can be attached to an existing propeller system including a propeller having a boss, a propeller shaft and a tightening nut screwed onto the end of the shaft. The auxiliary propelling structure includes an auxiliary boss that is approximately cylindrical to enclose closely the tightening nut of the existing propeller system and having an internal partition with a central through-hole. The partition is pressed against the tightening nut.