389 results about "Bell jar" patented technology

The substrate processing apparatus according to the present invention is aimed to stably and efficiently perform a deposition process on a substrate W. The substrate processing apparatus supports the substrate W in a position facing a heater portion and thus rotates a holding member holding the substrate W. Furthermore, the heating portion houses a SiC heater and a heat reflecting member in an internal portion of a quartz bell jar made of transparent quartz, and depressurizes an internal space of a processing vessel and an internal space of the quartz bell jar at the same time; thereby allowing the thickness of the quartz bell jar to be thinner, and thus improving thermal conductivity of heat from the SiC heater and preventing contamination by the SiC heater.

A thermal processing furnace, comprising:

• a generally bell jar-shaped outer reaction tube having a central axis; and
• an open-ended inner reaction tube for accommodating a wafer boat holding a plurality of substrates, which inner reaction tube is substantially coaxially disposed within the outer reaction tube, thereby defining a gas passage between an outer wall of the inner reaction tube and an inner wall of the outer reaction tube,

wherein at least one of the outer wall of the inner reaction tube and the inner wall of the outer reaction tube is provided with a flow deflector that protrudes radially from the respective wall into the gas passage.

The invention relates to a full-body anti-slip ceramic brick and a production method thereof. According to the full-body anti-slip ceramic brick, a compound layer brick body is composed of a colored spot green body layer, large-particle colored spots mixed into the colored spot green body layer, a pattern decoration layer on the surface of the green body layer and a dry-particle glaze layer attached to the pattern decoration layer; the production method comprises the following steps: (1) pressing a green body, wherein green body powder is composed of conventional powder and large-particle powder; (2) drying under the conditions that the drying temperature is 80 to 100 DEG C and the drying time is 60 to 80 min; (3) decorating a pattern: before decorating the pattern, not applying any glazelayer or other protection layers on the surface of the blank body, so as to directly realize inkjet printing decoration on the surface of the blank body; (4) applying dry-particle glaze: spraying theglaze through a bell jar; (5) firing under the conditions that the temperature is 1150 to 1160 DEG C and the time is 50 to 60 min.

An apparatus, system, and method for the secure attachment and restraint of a pipe end within a fitting is disclosed. The invention includes a mechanical restraint apparatus that is integral and monolithic with the flange of a bell of a spigot-and-bell joint architecture, along with one or more internally disposed grooves within the bell that receive a circumferential gasket, in order to maintain a seal about the pipe end when it is inserted into the bell. The inventive apparatus combines features of mechanical connections and push-on connections.

The invention relates to an energy-saving polysilicon reduction furnace and a manufacturing method for polysilicon. The polysilicon reduction furnace comprises a bell jar type furnace wall, a base plate arranged on the lower side of the furnace wall, electrodes arranged on the base plate, silicon core rods arranged on the electrodes, and a raw material gas inlet and a tail gas outlet which are formed in the base plate. The polysilicon reduction furnace is characterized in that: the base plate is provided with a bell jar type heat screen which is concentric with the furnace wall and covers the silicon core rods; the heat screen consists of a cylinder part and a top part which is connected with the cylinder part and provided with a through hole; the raw material gas inlet is at least partially formed in the base plate between the cylinder part of the heat screen and the furnace wall; and the tail gas outlet is formed in the center of the base plate. In the polysilicon reduction furnace, the polysilicon is covered by the heat screen, so that the heat loss is reduced to a great extent, raw material gas is preheated, and the conversion rate of trichlorosilane can be improved.

The invention discloses a low-frequency error measuring method for a star sensor, and builds a low-frequency error measuring system comprising an auto-collimating collimator, a static multi-optical path star simulator, an adjusting bracket, a measuring system and a laser sight, wherein the star sensor is mounted on a vibration isolation table; a vacuum bell jar is used for providing a vacuum environment for the star sensor; a glass window is arranged on the vacuum bell jar; the transmittivity of the glass window is not less than 95 percent; and the star point imaging positions of the star sensor and the auto-collimating imaging positions of an optical datum mirror are monitored and measured at different temperatures under vacuum conditions, so as to fulfill the measuring of the low-frequency error of the star sensor. The invention further provides a measuring system to analog fixed stars of different spectra independently or simultaneously while measuring the auto-collimating angle of the optical datum mirror, and monitor and measure the star point imaging positions of the star sensor and the auto-collimating imaging positions of the optical datum mirror, so as to improve the measuring accuracy.

The invention discloses a ground coat used for producing a fully-glazed ceramic tile and beneficial to color development of ceramic ink. The ground coat is mainly prepared from, by weight, 20%-30% of potassium feldspar powder, 10%-20% of feldspar powder, 5%-10% of calcined kaolin powder, 8%-13% of quartz powder, 5%-10% of kaolin powder, 16%-21% of calcined alumina powder, 1%-3% of calcined talcum powder, 1%-3% of calcined zinc oxide, 9%-15% of zirconium silicate, 0.3%-0.4% of water reducing agent and 0.15%-0.25% of methyl. The content of single raw material chemical component CaO is smaller than 3%. The raw material chemical components of the ground coat comprise 48.5%-52.0% of SiO2, 30%-34.5% of Al2O3, 0.1%-0.2% of Fe2O3, 0.05%-0.15% of TiO2, 0.1%-0.3% of the CaO, 0.3%-1.0% of MgO, 3.0%-4.0% of K2O, 1.5%-2.5% of Na2O, 0.9%-3.0% of ZnO, 5%-10% of ZrO2 and 0.9%-2.0% of igloss. The technological process of the ground coat includes the steps of blending, ball milling, sieving, deironing and glaze slip staling. The using method of the ground coat includes the step of glazing through a bell jar glaze pouring technology or a linear glaze pouring technology. By the adoption of the ground coat, the colors of the product are enriched, color development of the ceramic ink is facilitated, color development of each color is deeper, the hue is pure, and the rate of qualified products is high.

A plasma chamber is provided having an upper insulating member as a lid of the plasma chamber. The lid of the plasma chamber, usually in the form of a bell jar, has an inside surface which will be exposed to the interior of the plasma chamber. A nucleation layer is affixed to the inside surface of the insulating member. The nucleation layer is selected to be a material which will enhance the growth on itself of the particular material being etched within the process chamber. For example, if the pre-clean chamber is being used to etch oxides, the nucleation layer is selected to be of a type which will create a large number of nucleation sites for the growth of an oxide layer on the interior wall of the bell jar. Each nucleation site becomes the starting point for the adherence of the etched oxide atoms onto the wall of the bell jar. Wafers pre-cleaned in such a chamber have a lower defect density. Further, longer times are permitted between cleaning and replacing components in the pre-clean chamber.

The invention relates to a method for manufacturing a nano enhanced wet copper-based friction plate. The method mainly comprises the following steps of: 1, mixing materials; 2, performing ball-milling on mixed materials; 3, profiling; 4, plating copper on a core plate; 5, performing pressure sintering; and 6, processing an oil groove. The nano enhanced wet copper-based friction plate comprises the following components in percentage by weight: 60 to 75 percent of Cu, 2 to 6 percent of Sn, 3 to 8 percent of Zn, 12 to 25 percent of C, 2 to 5 percent of SiO2, and 0.5 to 1.5 percent of nano SiO2; the materials are mixed; the step of performing ball-milling on the mixed materials comprises the following substep of placing the mixed powdery materials and steel balls in a ball mill, wherein the ratio of the steel balls to the material is 5 to 1 and the time of the ball-milling is 1.5 to 2.5 hours; the step of performing pressure sintering comprises the substeps of stacking profiled powder blank of a frictional layer and a copper-plated steel core plate in a bell jar type pressure sintering furnace and performing pressure sintering, wherein the sintering temperature is 750 to 850 DEG C; preserving heat for 2.5 to 3.5 hours, wherein the atmosphere is ammonia decomposition gas; and the step of plating copper on the core plate is to plate copper on the core plate by an electroplating method and manufacturing the copper-plated core plate and comprises the following substeps of hanging the core plate on a cathode, hanging a copper plate on an anode, adding copper ion-containing electroplate liquid into a plating bath, introducing direct current and adjusting electroplating time according to the thickness of a plating layer. The nano enhanced wet copper-based friction plate manufactured by the method has frictional wear performance and a heat resistance coefficient which are obviously superior to those of the wet copper-based friction plate manufactured by the conventional method.

A plasma processing apparatus includes a gas ring forming a portion of a vacuum processing chamber and having a blowing port for a processing gas, a bell jar to define a vacuum processing chamber, an antenna for supplying an RF electric field into the vacuum processing chamber to form plasmas, a sample table, a Faraday shield, and a deposition preventive plate attached detachably at least to the inner surface of the gas ring excluding the blowing port. An area of the inner surface of the gas ring including the deposition preventive plate that can be viewed from the sample surface is set to about ½ or more of the area of the sample. A susceptor made of a dielectric material covers the outer surface and the outer lateral side of the sample table. A metal film is disposed with respect to the susceptor, and an RF voltage is applied to the metal film.

The invention discloses an experimental facility for the measurement of the hot forming limit of a laser tailor-welded blank. The experimental facility is characterized by comprising an upper mould base and a lower mould base; an accommodating space for accommodating a main body of the experimental facility is defined by the upper mould base and the lower mould base; the main body of the experimental facility comprises a heating and temperature-controlling bell jar placed on a supporting platform of the lower mould base, a spherical punch placed in the heating and temperature-controlling bell jar, a convex mould blank holder and a concave mould blank holder; the experimental facility further comprises a gas protection system communicated with the heating and temperature-controlling bell jar. The experimental facility has the advantages of effectively controlling the flow of the tailor-welded blank, providing a constant-temperature interior experimental environment, and performing on-line high temperature strain measurement and the like; through the test of the experimental facility, the test sample, which is used for establishing a hot forming limit map, of the laser tailor-welded blank can be obtained accurately under different high temperature conditions, so that the hot forming limit map of the laser tailor-welded blank is established.

Disclosed herewith is a diamond film depositing apparatus using microwaves and plasma. The apparatus comprises a rectangular wave guide (125), a mode transition coupler (120), an antenna rod (130), a quartz bell jar (140), a workpiece holder (116), a microwave cavity resonator (112), a source gas inflow ring (160), a mechanical support cylinder (164), a cooling jacket (165), gas inflow and outflow conduits (172 and 174) and a vacuum seal (190). The microwave cavity resonator (112) has a cylindrical shape the diameter of which is decreased in a downward direction. The microwave cavity resonator (112) may have a hemispherical shape, the flat surface of which is oriented upward.

The invention is a high temperature-resistant crystal annealing device, including a bell-jar, arranged on an underframe with vacuum vent, hermetically contacting with the underframe through vacuum seal ring, and provided with water inlet and outlet as well as air pressure meter, there is a heat-preserving screening device containing side screening tube and top and bottom heat baffles, arranged in the bell-jar body, there are air-inlet valve and air-outlet valve arranged on the bell-jar body; a heating body arranged in the innermost layer and on tow sides of the side screening tube is made of Wu bar and fastened on a Mo electrode plate through electrode contact; the Mo electrode plate is supported by corundum insulating ring bracket, where the two ends of the Mo electrode plate are both fastened on a water-cooled electrode plate; a space encircled by the heating body above the Mo electrode plate is provided with a crystal annealing room; there is a heat-insulating plate arranged inside the corundum insulating ring bracket under the Mo electrode plate. The invention can increase the factor of merit (FOM) value of high-doped Ti:sapphire laser crystal by a large margin and improve optical quality of high-temperature oxide crystal.

The invention relates to a high-blast-temperature hot-blast stove burnt in a convection swirling heat storage medium, effectively solving the problems of complicated structure, non-uniform gas mixing, insufficient burning, environmental pollution and energy waste. The stove adopts the structure that a pre-burning chamber of a bell jar on the top of a ball and a taper-section barrel-shaped burning chamber below the pre-burning chamber are connected by using a labyrinth without stress action; the taper-section burning chamber is sufficiently filled with porous heat storage bodies; a coal gas inlet pipe and an air inlet pipe are distributed on the vertical wall of the pre-burning chamber; a barrel-shaped heat storage chamber is arranged below the burning chamber, and checker brick heat storage bodies are stacked on grates in the heat storage chamber; a cold air chamber is arranged below the heat storage chamber, and a smoke exhaust pipe and a cold air inlet pipe are connected to the wall; the grates for holding the heat storage bodies are mutually spaced with expansion gaps, put on a beam and supported by grate supporting posts; the supporting posts are fixed on a rigid base of the hot-blast furnace; and a central vault line of the pre-burning chamber is provided with a hot-blast outlet pipe coaxial with the hot-blast furnace. The invention has the advantages of simple structure, high mixed burning intensity, good air flow heat exchange effect and raised hot-blast temperature.

The invention discloses a short-process high-performance oxygen-free copper strip production method which comprises the following steps: blank withdrawing during horizontal continuous casting; double-sided milling, reversible copper strip roughing and intermediate milling; primary trimming by thick strip slitting shears; primary annealing by a bell-jar bright annealing furnace; surface cleaning by a thick strip degrease cleaning line; finish rolling by a four-roll reversible finishing mill; secondary annealing of the finished product by the bell-jar bright annealing furnace; surface cleaning by a thin strip degrease cleaning line; and post-processing. The method provided by the invention has the advantages that through optimization of the technological process as well as the processing sequence of the rough rolling and finish rolling procedures, the processing flow is simplified, the production efficiency is improved and the process period is shortened; and through optimization of the annealing temperature, the heat preservation period and the shielding gas flow rate, the product performance is improved.

The invention discloses automatic fastener assembling equipment which is used for assembling a buckle body, a buckle head, a torsional spring and a dowel into a fastener, and then, a bell jar is riveted to the tail part of the fastener to finish the assembling technology. The automatic assembling process of the automatic fastener assembling equipment comprises the following steps: at the buckle body feeding stations, controlling the buckle bodies to enter corresponding clamping jigs one by one, and along with rotation of an indexing rotary disc, enabling the clamping jigs carrying the buckle bodies to sequentially pass through the buckle body feeding stations to fix the buckle heads entering the clamping jigs; in a torsional spring feeding and dowel feeding stations, enabling a torsional spring feeding mechanism to automatically insert a spring, enabling a dowel feeding mechanism to insert the dowel through guidance of a guiding needle and rivet the dowel at a dowel riveting station; in a bell jar assembling station, enabling a bell jar feeding mechanism to mount a bell jar, and enabling a bell jar riveting device to rivet the bell jar onto the fastener; and later, finishing collection of a finished fastener at a finished product reclaiming station. The automatic fastener assembling equipment completely realizes automatic operation; and new fastener design is matched with new automatic fastener assembling equipment, so that higher practical value is realized.

The invention provides a copper-based friction plate for a heavy-duty truck clutch and a manufacturing method. The copper-based friction plate is mainly formed by sintering a pressed friction layer powder sheet and a copper-plated core board in a compounded manner. The friction layer powder sheet is composed of, by weight percent, 40% of Cu, 3% of Pb, 5% of C, 12% of zirconium silicate, 15% of Fe, 2% of calcium oxide and 2% of aluminum oxide. The manufacturing method includes the steps that firstly, materials of the friction layer powder sheet are prepared; secondly, the materials of the friction layer powder sheet are mixed; thirdly, the friction layer powder sheet is pressed, the mixed materials mixed through the second working procedure are placed in a mold and pressed by a press machine to form the friction layer powder sheet; fourthly, the core board is plated with copper, wherein the core board is electroplated with copper through an electroplating method; fifthly, compound-sintering is performed, the friction layer powder sheet pressed through the third working procedure and the copper-plated core board manufactured through the fourth working procedure are compounded together and then placed in a bell jar furnace so as to be pressurized and sintered; and sixthly, coining is performed, wherein the copper-based friction plate compound-sintered through the fifth working procedure is pressed through the press machine.

The invention discloses a high-strength bolt production process. The high-strength bolt production process includes the following steps that bar-shaped raw materials are selected and used, the raw materials are medium-carbon alloy steel, base materials are upset through hot upsetting dies, and therefore semi-finished bolt workpieces are acquired; solution treatment is conducted on the semi-finished bolt workpieces; bolt blanks are placed in a bell jar furnace for heat preservation and cooling; quenching is conducted; formed pieces are quenched in a salt bath furnace; tempering is conducted; the semi-finished bolt workpieces are coarsely machined in the aspects of the appearance and the size; the semi-finished bolt workpieces are finely machined in the aspects of the appearance and the size, rods of the semi-finished bolt workpieces are rolled to machine external threads, and therefore finished bolt workpieces are acquired; carbonization is conducted; the surfaces of the blanks are treated. By the adoption of the high-strength bolt production process, the strength of bolts can be improved, the technological process is simple, manufacturing cost is low, the technological process is good in continuity, and production efficiency is high.

The invention discloses a bell jar type coating device capable of coating various glazes simultaneously. The bell shape coating device comprises a large bell jar and a small bell jar, wherein the lower bell jar of the small bell jar is provided with an arc-shaped connecting gap corresponding to the surface radian of the lower bell jar of the large bell jar, and is tightly connected with the outer surface of the lower bell jar of the large bell jar by virtue of the arc-shaped connecting gap. Glazed curtains simultaneously coated by the bell jar type coating device capable of coating various glazes simultaneously provided by the invention are uniform and stable, and glaze materials on coated adobe surfaces are uniform, so that the glazes are rich in color.

The invention discloses an anti-slip glaze, which comprises the following raw materials: potassium feldspar, albite, nepheline, zinc oxide, calcined talc, barium carbonate, calcined kaolin, kaolin, quartz, corundum, and frit. The processing method of the anti-slip glaze comprises: 1, material preparing; 2, material adding, wherein the raw materials are sequentially added to a material mixing machine; 3, material mixing; 4, inspection; and 5, packaging treatment. The method for using the anti-slip glaze in a sintered brick comprises: ratio testing, wherein the raw materials are prepared according to the glossiness, the generated color, the touch and the anti-fouling index; pre-treating, wherein a surface glaze is watered into a brick billet by a bell jar glaze watering device; inkjet, wherein the pre-treated brick surface is sprayed with ink patterns and colors according to the design; glazing, wherein the ink-jetted brick surface is printed with an anti-slip glaze; and firing, whereinthe glazed brick is fed into a kiln and is fired. The anti-slip glaze of the present invention has characteristics of good gloss, no reflection, comfortable hand feeling, high friction coefficient, good antifouling effect and good color generation.

The invention relates to a vacuum evaporation coater with high temperature heating, belonging to the field of electromechanical technique. The invention comprises a bell jar, substrate clips and evaporating chambers which are positioned in a foundation bed. A heating device is arranged in the evaporating chamber. At least two groups of the substrate clips, the evaporating chambers and the heating device are prepared; each substrate clip is installed on the foundation bed of the substrate clip; the invention also comprises a driving device which drives the foundation beds of the substrate clip to relatively lift and rotate. The vacuum evaporation coater of the invention has the advantages that more than two different materials can be simultaneously evaporated and various materials can be successively evaporated by the substrate clips, thus avoiding cross contamination and ensuring the purity of evaporants, meanwhile, the vacuum evaporation coater can improve the utilization of the evaporants, save time, simplify operating procedure and enhance adhesive properties of substrates and evaporation materials.

The invention relates to a glazed brick with fluorescent luster and a preparation method thereof. The glazed brick comprises a blank layer, a makeup soil layer, a decorative layer, a flash layer and aglazed layer. The flash layer contains mica flakes. The flash layer comprises transparent glaze powder, water and the mica flakes, and comprises the following components in parts by weight: 100 partsof the transparent glaze powder, 45-50 parts of the water and 0.3-1 part of the mica flakes. The preparation method comprises the following steps of: (1) pressing and forming a blank body and dryingthe blank body; (2) applying the makeup soil layer; (3) applying the decorative layer, to be more specific, decorating the surface of the brick blank by adopting an ink jet printing process to form the decorative layer; (4) applying the flash layer, to be more specific, using a bell jar glaze sprayer to spray the flash layer; (5) applying the glazed layer, to be more specific, applying a knife type glaze spraying device to spray the glazed layer; (6) firing, to be more specific, firing at the firing temperature of 1165-1210 DEG C, wherein the firing time is 55-80 minutes; and (7) polishing, tobe more specific, controlling the glossiness at 75-85 degrees after polishing.