46 results about "Thermal deflection" patented technology

Compression molded pigmented door skins fabricated by compression molding a pigmented, curable, unsaturated polyester sheet molding compound containing a co-curable unsaturated monomer, a low profile additive, and a microvoid-reducing thermoplastic polymer, exhibit uniform stainability while maintaining a low linear thermal coefficient of expansion. Such door skins are suitable for preparing wood grain textured exterior insulated doors which exhibit minimal thermal deflection when exposed to interior / exterior temperature differentials, even at eight foot door heights. The doors may be stained without first applying a seal coat.

Compression molded pigmented door skins fabricated by compression molding a pigmented, curable, unsaturated polyester sheet molding compound containing a co-curable unsaturated monomer, a low profile additive, and a microvoid-reducing thermoplastic polymer, exhibit uniform stainability while maintaining a low linear thermal coefficient of expansion. Such door skins are suitable for preparing wood grain textured exterior insulated doors which exhibit minimal thermal deflection when exposed to interior / exterior temperature differentials, even at eight foot door heights. The doors may be stained without first applying a seal coat.

A vane assembly for a gas turbine engine is disclosed having lower thermally induced stresses resulting in improved component durability. The stresses in the vane assembly airfoils are lowered by increasing the flexibility of the vane platform and reducing its resistance to thermal deflection. This is accomplished by placing an opening along the innermost vane assembly rail that reduces the effective stiffness of the platform, thereby lowering the operating stresses in the airfoils of the vane assembly. A removable seal is then placed in the opening in order to prevent undesired leakages, while maintaining the benefit of the increased platform flexibility.

A gas turbine vane to improve vane performance by addressing known failure mechanisms. A cooling circuit to the trailing edge of a vane airfoil is fed from the outer diameter platform, which prevents failure due to an oxidized and eroded airfoil trailing edge. The gas turbine includes an outer diameter platform, a hollow airfoil and an inner diameter platform with a plurality of cooling tubes extending radially through the airfoil. The cooling tubes are open at the outer diameter end and closed with covers at the inner diameter end. The inner diameter platform is also cooled and includes a meterplate for a portion of the cooling passageway and includes an undercut to improve thermal deflections of the inner diameter platform.

A backlight unit adapted to prevent light leakage and damage of its internal components due to a thermal deformation is disclosed.The backlight unit includes: a bottom cover with an opened upper surface; a printed-circuit-board disposed on at least one inner side surface of the bottom cover; a plurality of LEDs loaded on the printed-circuit-board; and a plurality of slits formed on at least one edge of the bottom cover opposite to the printed-circuit-board and configured to reduce thermal deformation of the bottom cover.

A method and assembly for forming a multi-shot panel for a vehicle including the steps of providing a mold and forming therein a main body of the panel from a first rigid material, the step of forming the main body further including forming a multi-sided recess. The rigid material is transferred to a second reconfiguration of the mold for forming thereupon at least one second softer material. The panel is then transferred to a third reconfiguration of the mold for forming the heat deflecting shield. Alternative, a two shot injection molded panel can be removed from the mold and a previously formed heat deflecting shield can be attached along edges of the main body defining the multi-sided recess. In either variant, locking features are designed into the interface geometry between the heat deflecting shield and rigid main body.

The invention relates to a standard sample used for detecting specific thermal deflection property and its preparation method. Selecting thermal bimetals as the materials, the standard sample comprises the following components by weight percent: a high expansion layer composed of 21.5-24.0 of Ni; 2.5-5.0 of Cr; 0.40-0.70 of Mn; 0.20-0.35 of Si; 0.30-0.40 of C; less than or equal to 0.02 of P; less than or equal to 0.02 of S; and a low expansion layer composed of 36.0-38.0 of Ni; less than 0.50 of Mn; less than 0.25 of Si; less than or equal to 0.05 of C; less than or equal to 0.02 of P; and less than or equal to 0.02 of S. The preparation method includes: employing a vacuum induction furnace process to smelt thermal bimetals, then casting them into an ingot, and conducting a homogeneity test; taking the central part of the ingot to perform forging and hot rolling into a bar of certain specification, then carrying out cold drawing on the bar to obtain a finished bar with certain diameter; taking a representative part from the finished bar along the rolling direction; performing finish machining to obtain the standard sample. The standard sample provided in the invention and a thermal bimetal detection device can be used together for determining the specific thermal deflection property of thermal bimetals, can effectively guarantee instrument calibration and data comparison, thus greatly improving the accuracy of evaluation test and measurement precision, and guaranteeing effective supervision of product quality.

The invention discloses a device and a method for detecting bimetallic thermo-sensitive property. The device comprises a torsion measuring device, a temperature control oil tank arranged below the torsion measuring device and an electronic contact indicator connected with the torsion measuring device, wherein the torsion measuring device comprises a bracket platform, a sample holding rod (bracket) arranged on the bracket platform and submerged in the temperature control oil tank and a measuring pen capable of moving on the bracket platform; and the measuring pen comprises a micrometer head and a measuring rod which is connected with the micrometer head by a connecting block and submerged in the temperature control oil tank and contacts a sample. According to the device and the method for detecting the bimetallic thermo-sensitive property, the 'specific thermal deflection value' of a thermal bimetallic sample at the temperature of between 20 and 300 DEG C can be measured, and the maximal measurement deviation does not exceed + / - 1.0 percent, which meets precision requirements of national standard GB / T8364-1987 'Test Method for Specific Thermal Deflection of thermostat Metals'.

The invention relates to an arrangement method of a tower-type boiler high-temperature reheater container system, which can reduce the thermal deflection among the screens of reheater effectively according to the operation characteristic of the tower-type boilers. The arrangement method comprises: arranging a resistance device in a lead-out steam guide pipe, close to the center of the boiler, of the tower-type boiler reheater outlet container, the distribution of inter-screen flow is changed by changing the difference between the lead-out flows on two sides of the reheater system outlet container so as to be matched with the distribution of inter-screen heat release difference on a smoke side to reduce inter-screen thermal deflection.

A thermally-controlled actuator includes a cylindrical anisogrid structure formed from a plurality of circumferentially offset clockwise and counter-clockwise helical members, and a plurality of longitudinally offset cylindrical ring members. A thermal control element is configured to control the temperature of at least some of the members. The cylindrical anisogrid structure has a top interface constraint and a bottom interface constraint, and the thermal control element is configured to control a displacement of the top interface constraint relative to the bottom interface constraint via control of the temperature of at least one of the helical members.