摘要:
At least two exhaust holes are formed in an atomizing nozzle of an apparatus for spraying an air-water mist for cooling which is used in continuous metal casting. The respective spraying mist streams from the exhaust holes cross each other before they reach the surface of a cast strand and are diffused forwardly due to the influence of the kinetic energy which is directed in the spraying direction after they crossed, so that they sufficiently enter the region between the surfaces of guide rollers and cast strand, thereby directly spraying the air-water mist over almost the entire region of the surface of the cast strand. In addition, a header is disposed in parallel to the guide rollers and a plurality of water branching pipes are attached in line to the header in the longitudinal direction thereof. The inner diameter of these water branching pipes are set to be sequentially smaller toward the lower stage. The back pressures of the atomizing nozzles are reduced by causing pressure losses in the water branching pipes coupled to the atomizing nozzles, thereby spraying a uniform flow rate of the water from each water branching pipe.
摘要:
An exhaust hole is formed in an exhaust side wall of a mist atomizing nozzle of an apparatus for spraying the mist for cooling for and is used in continuous metal casting. An introduction inlet is provided in an introducing side wall on the side opposite the exhaust side wall at the height position different from that of the exhaust hole. An air-water mixture supply pipe is attached to the introduction inlet to communicate therewith. The air-water mixture of relatively large water droplets is formed and is introduced into the mist atomizing nozzle by that air-water mixture supply pipe. After the air-water mixture repeatedly collides in the mist atomizing nozzle, the large water droplets are made fine and are sequentially exhausted from the exhaust hole by being pressed by the supply pressure from the rear side.
摘要:
A probe unit comprising a base in the form of a rectangular plate and a plurality of ultrathin metal wires which are partially secured to the base at a given pitch. Each of the wires comprises a straight portion firmly secured to the base, a bent portion located on an extension of the straight portion, and an inclined portion inclined from the bent portion outwardly of the base toward an inspected surface of an object to be inspected, and an R-shaped portion extending from the front end of the inclined portion outwardly of the base. The bent portion protrudes outwardly from the base and is bent toward the inspected surface. The R-shaped portion forms each probe pin bearing against the inspected surface.