33results about How to "Change the temperature distribution" patented technology

Provided is an apparatus for manufacturing a compound semiconductor by use of metal organic chemical vapor deposition including: a reaction container; a holder on which a formed body is to be placed so that a formed surface of the formed body on which layers of a compound semiconductor are to be formed faces upward, the holder being arranged in the reaction container; and a material supply port supplying a material gas of the compound semiconductor into the reaction container from outside, wherein the holder includes a support member supporting the formed body so that an undersurface of the formed body and a top surface of the holder on which the formed body is to be placed keep a predetermined distance.

A press-molding apparatus comprises a conveyance passageway and, disposed thereon, a heating chamber for heating a mold containing a raw material, a molding chamber for press-molding the raw material in a non-oxidizing gas atmosphere, and a cooling chamber for cooling the mold after molding and in which the mold is successively conveyed on the conveyance passageway. In the press-molding apparatus, each of the heating chamber, the molding chamber, and the cooling chamber is blocked from the atmosphere during the press molding. The apparatus has a means for blocking the molding chamber and the cooling chamber and has an opening for introducing the non-oxidizing gas into the press-molding apparatus, the opening being formed in at least either of the heating chamber and the molding chamber.

The present invention discloses a multi-nozzle multi-stage oxygen supplying entrained-flow gasifier. The entrained-flow gasifier comprises a top closed type gasifier body, an ignition nozzle chamber, a gasifier outlet, and at least two process nozzle chambers, wherein process nozzles are arranged inside the process nozzle chambers. The entrained-flow gasifier further comprises at least two secondary oxygen supplying nozzle chambers, wherein secondary oxygen supplying nozzles are arranged inside the secondary oxygen supplying nozzle chambers, the secondary oxygen supplying nozzle chambers are arranged between the process nozzle chambers and the gasifier outlet, and are symmetrically arranged on the circumference of the gasifier body, and the secondary oxygen supplying nozzles are arranged inside the secondary oxygen supplying nozzle chambers. The present invention further discloses a gasification method of the gasifier. According to the gasification method, an oxidizing agent is introduced to the secondary oxygen supplying nozzle during the reaction process to promote the further gasification reaction. With the present invention, a plurality of the nozzles are adopted to carry out multi-stage oxygen supplying on the gasifier, such that the service life of the fire brick structure on the upper space of the gasifier is substantially prolonged so as to substantially improve the operating rate and the performance of the gasifier. In addition, with the present invention, the liquid slag tapping of the gasifier is ensured, and the phenomenon of slag blocking of the outlet is avoided.

The present invention relates to a method of speeding melting of polycrystalline raw material and the bottom heater for pulling monocrystal. The method comprises leading DC current to bottom heater while leading DC current to the main heater, so that the quartz crucible is heated from both lateral side and bottom. The bottom heater comprises one disc heating body and two electrodes. The present invention can short the melting time of polycrystalline material and save electric power, and thus increase the yield of monocrystal silicon or germanium.

Provided are a reaction chamber and plasma processing equipment applying the same. The reaction chamber comprises an outer chamber, an inner chamber and a gas delivery tube, wherein the inner chamber is arranged in the outer chamber, a gas passage is formed between the inner chamber and the outer chamber, the gas passage is communicated with an exhaust passage of the outer chamber, the gas delivery tube is arranged in the inner chamber, a plurality of gas inlets for delivering process gas to the inner chamber is arranged on the gas delivery tube and an exhaust port is arranged on the chamber wall of the inner chamber. An exhaust port adjustment unit is arranged at the position of the exhaust port to adjust the distribution of temperature in the inner chamber and to further improve the adjustability of the plasma processing equipment.

The invention belongs to the field of metal additive manufacturing, and specifically discloses an electromagnetic-assisted arc additive manufacturing forming device and method, which includes a substrate, an arc welding torch, an electromagnetic coil, a line laser scanner, and a magnetic field measuring instrument. The arc welding torch and The electromagnetic coil is located above the substrate, the arc torch is used to weld and form the part to be formed on the substrate, and the electromagnetic coil is used to apply a magnetic field at the weld pool of the part to be formed; the line laser scanner is located on the Above the part to be formed, it is used to detect the surface topography of the weld bead; the magnetic field measuring instrument is located between the electromagnetic coil and the part to be formed, and is connected with the electromagnetic coil, for measuring and controlling the electromagnetic The strength of the magnetic field applied by the coil to the weld pool of the weld bead. The invention supports the molten pool of the weld bead through the electromagnetic induction force during arc additive manufacturing, prevents the flow of the weld bead, reduces the residual stress of the welded joint, and improves the mechanical properties of the formed parts.

The invention discloses a tubular furnace with adjustable heat distribution ratio, which comprises: a furnace base; a heating furnace arranged on the furnace base; The low-level combustion zone and the high-level combustion zone arranged in sequence from bottom to top; and, the zoned combustion device is located at the bottom of the heating furnace; the zoned combustion device includes multiple combustion equipments located at the bottom of the heating furnace, and multiple The combustion equipment has different flame directions to form a low-level flame corresponding to the low-level combustion zone, or to form a high-level flame corresponding to the high-level combustion zone. The tube furnace with adjustable heat distribution ratio provided by the invention aims to solve the technical problems in the traditional technology that the tube furnace is difficult to control the flame size within a safe range and lacks the function of adjusting the heat distribution of different materials.

The invention belongs to hot rolling equipment and a hot rolling method, and particularly relates to a method and a device for controlling the strip shape and the precision of hot rolling steel strips and plates. The invention regulates the deformation capacity of the metal by changing the temperature distribution in the width direction of rolled pieces so as to reach ideal strip shape control, i.e. an aerial fog cooling medium is accurately sprayed on the rolled pieces to change the temperature distribution in the width direction of the rolled pieces; the cooling parameters for spraying along the width of the rolled pieces are regulated according to the set and feedback information to realize the open-loop or closed-loop strip shape control; aerial fog cooling devices are arranged in front of and at the back of a reversing mill; and the aerial fog cooling devices in front of rolling mills and among the standers of the rolling mills in series-type hot steel strip rolled pieces and simultaneously spray the aerial fog on the upper and lower surfaces of the rolled pieces. The invention has simple structure and strong applicability, can be used for the strip shape control of the newly-built hot rolling mill or be used for carrying out improvement of the strip shape control on the rolling mill, is also suitable to roll the hot rolling steel strips and plates of the nonferrous metals and has wide popularization value.

Present invention relates to a width adjustable and temperature controllable transverse direction magnetic flux induction heating apparatus. It contains belt material, fixed coil, mobile loop, yoke iron, guide way, travel mechanism, tank shape structure, fixed structure, and supporting rack, wherein fixed coil parallel to belt material surface, fixed coil long edge perpendicular to belt material direction of motion, removable loop parallel to belt material surface and located fixed coil outside it long edge parallel to belt material direction of motion mobile fixation to supporting rack, interior fixing several groove shape structure, yoke iron inserted in groove and fixed by fixing structure, each traveling loop can sliding in two ends guide way, supporting rack. Present invention is width and temperature controllable, can adapt belt material width variation in larger range and get more uniform temperature distribution, greatly raise production efficiency and save cost.

The invention discloses a water-cooled support rod and a processing method thereof. The connected water-cooled jacket and the support rod respectively have a first water channel and a sixth water channel which are not connected to each other and are arranged between the water-cooled jacket and the surface of the support rod along the axial direction. The water channels are arranged in the water cooling jacket parallel to the second water channel, the third water channel, the fourth water channel and the fifth water channel, and all the water channels are mutually independent structures, which are connected in turn to form a complete water channel structure; Method and 3D printing technology combined processing method to design and process fully water-cooled struts, improve water-cooling efficiency, reduce strut temperature gradient, suppress strut deformation caused by temperature changes in wind tunnel tests, and improve the accuracy of hypersonic wind tunnel force testing .

A polishing pad is provided. The polishing pad, suitable for a polishing procedure using a slurry containing water, includes a polishing track region and a first reactant. The polishing track region includes a central region and a peripheral region surrounding the central region. The first reactant is disposed in the central region of the polishing track region, wherein the first reactant is able to react endothermically with the water in the slurry.