摘要:
There is provided an apparatus and method for consolidation joining a thermoplastic preform to form a duct. The apparatus includes first and second longitudinally extending support structures. The first support structure at least partially defines a cavity for supporting the preform in a desired configuration of the duct. The second support structure extends in the cavity such that the preform can be supported between the first and second support structures. The second support structures can include an elastomeric device that is configured to adjust radially and urge the interface of the preform against the first support structure. A heater is configured to heat an interface of the preform to above a glass transition temperature. The resulting duct is has a longitudinal consolidation joint and defines a passage.
摘要:
A method and apparatus for heating pressure vessels used in the tire retreading and tire repairing industry which includes a plurality of heat exchangers in the form of plate coils associated with the pressure vessel with steam being circulated through the plate coils for heating the pressure vessel to a temperature required for vulcanizing rubber. Steam is supplied from a boiler and returned to a condensate return tank through valves and traps in order to provide a closed loop system with the steam being produced by the boiler passing through steam lines into the upper end portions of the plate coils which are attached to the pressure vessel, either interiorly or exteriorly, in a manner to radiate heat into the insulated pressure vessel in order to raise the temperature interiorly of the vessel to that required for vulcanizing rubber. As heat is radiated from the plate coils into the pressure vessel, the steam in the plate coils will be cooled and condensed and forced into a float operated trap and when the water level in the trap builds up, the float valve therein is opened and the condensate water is forced through a condensate return line into a condensate return tank with this circulation of the steam through the plate coils maintaining substantially constant temperature in the pressure vessel. The condensate return tank is provided with a feed water line to maintain a desired water level by the use of a float valve with a water pump being activated to pump the water back into the boiler where it is heated for passage into the plate coils thereby providing a closed loop system with the feed water line, of course, maintaining proper water levels in the system.
摘要:
An autoclave comprises a long upwardly open channel-shaped vessel, a gas and pressure resistant lid closing the vessel, means for actuating the lid for simultaneously closing and opening the autoclave along its entire length, the structure of the vessel being unitary and supported at a plurality of locations along its length for permitting heat promoted variations in length of the autoclave.
摘要:
The present invention provides a fixing pressure roller exhibiting excellent compression set and having low hardness and low heat capacity, as well as a fixing device including the fixing pressure roller. A pressure roller employed in a fixing unit of a fixing device includes a core, and an elastic layer provided around the core, wherein the elastic layer is formed of a silicone rubber product produced by mixing a silicone rubber raw material with resin microballoons and water, and then curing the silicone rubber raw material; and the silicone rubber product includes therein voids provided by breakage of the resin microballoons through application of pressure, and voids provided through evaporation of the water.