摘要:
Steel materials having an excellent hydrogen induced cracking resistance when used under atmosphere containing H.sub.2 S, which contain 0.05 to 0.20% of C, 0.01 to 0.50% of Si, 0.60 to 2.00% of Mn, 0.01 to 0.10% of Al, less than 0.0020% of S, Ca of 0.0020% to less than 0.0050%. These steel materials are increased in the tensile strength by additionally containing at least one of Cu, Ni, Cr, B, Mo, Nb, V, Zr and Ti. Furthermore the effect of addition of Ca is stabilized by adding rare-earth elements.
摘要:
A plasma processing apparatus according to the present invention includes a microwave guide for introducing a microwave, an air-tight chamber for internally setting an object to be processed, for generating a plasma by introducing the microwave introduced by the microwave guide and by supplying a reaction gas, and for processing the object by an active species generated by the plasma, a dielectric window provided between the microwave guide and the air-tight chamber, for enclosing the air-tight chamber, a top plate provided with a microwave guide port arranged with a gap maintained from the dielectric window, and cooling means provided for the top plate, for cooling heat caused by generation of the plasma, e.g., a cooling means for causing a cooling gas to flow in the gap between the dielectric window and the top plate.
摘要:
A plastic lamp housing is molded in one piece with two cantilevers extending forwardly from its rear wall for supporting a metal made reflector and a light bulb out of direct contact with all the inside surfaces of the lamp housing. The reflector thermally covers at least the top and bottom and rear sides of the light source for the reduction of heat transmission to the lamp housing. Depending from the lamp housing, a lamp standard has a hollow extending therethrough in communication with the interior of the lamp housing through a heat release opening formed in the bottom of the lamp housing. The lamp standard is for use in mounting the lamp on a hollow structural part of a motor vehicle in the vicinity of its rear window. Therefore, by creasing an opening in the hollow vehicle part, the heated air within the lamp housing can be vented into the hollow lamp standard and thence into the hollow vehicle part, instead of into the interior of the vehicle body.