摘要:
A heat resistant material and a pressure vessel by use thereof, having an excellent high temperature strength so as to be applicable to steam condition of 600.degree. C. or more, are provided. Said material consists of C, Si, Cr, Ni, V, Nb, N, Mo and W in the respective weight percent, and inevitable impurities and Fe, and is further added with Cu, B and Ca and/or Mn, Mn and Cu, B and Ca, in the respective weight percent. Also, a pressure vessel is formed of said materials.
摘要:
A heat resistant material and a pressure vessel by use thereof, having an excellent high temperature strength so as to be applicable to steam condition of 600.degree. C. or more, are provided. Said material consists of C, Si, Cr, Ni, V, Nb, N, Mo and W in the respective weight percent, and inevitable impurities and Fe, and is further added with Cu, B and Ca and/or Mn, Mn and Cu, B and Ca, in the respective weight percent. Also, a pressure vessel is formed of said materials.
摘要:
The video camera recording and/or play-back device according to this invention is constructed with plastic chassis and further provided with many mechanisms for assembling with case. This device is provided with two ring gears for guiding the tape to the revolving head cylinder, and a spaced portion penetrating the chassis in the vicinity of the location that the head cylinder is installed, the two ring gears are easily assembled by inserting the lower ring gear through the spaced portion and then placing the upper ring gear on the lower ring gear. In this device, at least one ring gear is made of plastic and provided with a mechanism preventing excess load to the ring gears.