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77results about How to "Reduce temperature unevenness" patented technology

Electromagnetically-induced three-dimensional heating system for selective laser melting

The invention discloses an electromagnetically-induced three-dimensional heating system for selective laser melting. The electromagnetically-induced three-dimensional heating system comprises a forming chamber, wherein a laser transmitter is arranged at the top of the forming chamber, a forming working platform is arranged at the bottom of the forming chamber, the forming working platform is cooperated with an inner body of a forming cylinder, a coil is arranged between the inner body of the forming cylinder and an outer body of the forming cylinder, the forming working platform is arranged in the coil, the coil is connected with an electromagnetic induction heating control cabinet, and the electromagnetic induction heating control cabinet is connected with a central controller; a graphite block is arranged between the inner body of the forming cylinder and the coil, a temperature sensor used for monitoring a temperature of the graphite block in real time is installed on the graphite block, and the temperature sensor is connected with the central controller; and an infrared thermometer used for monitoring temperatures of the machined parts in real time is installed in the forming chamber, and the infrared thermometer is connected with the central controller. The electromagnetically-induced three-dimensional heating system disclosed by the invention is used for uniformly heating the machined parts and a machining planar area, thus reducing the interlayer temperature gradients of cooling solidification and machining of an SLM metal molten pool, and reducing residual stresses in the metal parts; and online annealing can be realized.
Owner:XI AN JIAOTONG UNIV

ANSYS simulation platform-based method for calculating movable induction heating of big gear rings

The invention discloses an ANSYS simulation platform-based method for calculating movable induction heating of big gear rings. The method comprises the following steps of: determining a modeling-required parameter according to main equipment and workpieces used in an induction heating process of big gear rings; determining a software-recognizable equivalent parameter according to an induction heating process parameter used in a production process; establishing an initial analysis geometric model according to the determining parameters, adding physical property parameters of used materials, and dividing grids; applying a boundary condition and a corresponding load, and carrying out initial electromagnetic heating coupling calculation; extracting all the node temperatures of the analyzed workpieces; moving an inductor, establishing a movement analysis geometric model according to the determined parameters, adding material attributes, dividing grids, endowing nodes in one-to-one correspondence with the workpieces with the node temperatures extracted in the electromagnetic calculation, applying a boundary condition and a load, and carrying out continuous electromagnetic heating coupling calculation; and controlling the movement speed of the inductor through realizing the distance of each movement of the inductor and a corresponding induction heating time until the whole calculation is completed.
Owner:YANSHAN UNIV

Temperature control method for pulse-type slab heating furnace

The invention relates to a temperature control method for a pulse-type slab heating furnace. A pulse-type slab heating furnace and a heating furnace burner groups thereof are included. The heating furnace burner groups are arranged in pairs on two sides; the burner group on each side is divided into an upper group and a lower group. The method is as below: selecting representative burners in a heat supply segment of the heating furnace burner group; setting the temperature of the representative burners; directly using the temperature set in the heat supply segment of the heating furnace as the set temperature of representative burners; then setting the temperature of other burners in the heat supply segment of the heating furnace burner group; and finally detecting the actual temperature of other burners in the heat supply segment of the heating furnace burner group. The temperature control method of the pulse-type slab heating furnace can improve the temperature control of the head and tail of the temperature control middle segment of the pulse-type slab heating furnace burner group to realize stability and controllability. The method can reduce uneven atmosphere temperature distribution in the furnace, rationally allocate the load of burners, greatly save the energy consumption and increase productivity.
Owner:BAOSHAN IRON & STEEL CO LTD

Accessory system for fast stacking of annealed steel coil and operation method thereof

The invention discloses an accessory system for fast stacking of annealed steel coil and an operation method thereof. The system comprises an embedding sleeve, an image pickup system, an illuminating system, a viewer-sight indicating system, a display, and a position indicating mark, wherein the embedding sleeve is arranged at the center of the lower end face of a guide cone of a steel coil lifting appliance; the image pickup system is arranged at the center of the lower surface of the embedding sleeve in a sunk manner; the illuminating system is arranged at the lower surface of the embedding sleeve and adjacent to the image pickup system; the viewer-sight indicating system is arranged in the embedding sleeve in a sunk manner and adjacent to the image pickup system and the illuminating system; the display is electrically connected with the image pickup system and used for displaying images shot by the image pickup system and the viewing field mark central point; and the position indicating mark is arranged at the center of the upper surface of a starting fan on a steel coil stacking platform; and the center line of the embedding sleeve coincides with the center lien of the guide cone, the viewer-sight indicating system sends out two mutually vertical light rays from the viewing field, so that mutually vertical viewer-sight lines are displayed on the display, the point of the intersection of the viewer-sight lines coincides with the central point of the viewing field. The system and the method of the invention can improve stacking efficiency and quality.
Owner:SHANDONG IRON & STEEL CO LTD

Hot blade type electronic garbage pyrolysis device

The invention relates to the technical field of garbage treatment, in particular to a hot blade type electronic garbage pyrolysis device. The hot blade type electronic garbage pyrolysis device comprises an electronic garbage pyrolysis reactor and an electric heating system, wherein the electronic garbage pyrolysis reactor comprises a material pyrolysis assembly and a reactor shell; the material pyrolysis assembly comprises a spiral casing pipe and a propelling helix; the electric heating system comprises an electric heating wire and a power supply rotating joint; and the two ends of the electric heating wire stretch out along a spiral shaft of the propelling helix to be connected with the power supply rotating joint. The device adopts a spiral blade to heat, the electric heating wire is arranged in the propelling spiral shaft blade, materials perform heat transfer from inside to outside while being propelled by the helix, and the materials are directly heated by the high-temperature blade in the propelling process, so the thickness of a heat-preserving layer is reduced, the utilization rate of heat is increased and the production and manufacturing cost is reduced; meanwhile, the heating spiral blade rotates along with the spiral shaft, so the temperature is more uniform.
Owner:SHENWU TECH GRP CO LTD

Inkjet recording device

In an inkjet recording device using ink, the phase of which changes between a gel state or a solid state and a liquid state depending on temperature, when a recording medium fixing means is applied in which a recording medium is sucked and fixed by air suction via adsorbing holes contacting the recording medium, it is prevented that the pattern of the adsorbing holes appears on an image. The recording medium fixing means (2) for sucking and fixing a recording medium (M) by air suction via adsorbing holes (61) contacting the recording medium has: a recording medium holding layer (6) in which adsorbing holes are formed and a temperature by which ink becomes a gel state or a solid state is maintained; and a supporting layer (7) configured with at least one layer for supporting the recording medium holding layer and having suction holes (71) formed so as to communicate with the adsorbing holes. The opening area at the opening end of the adsorbing holes, which contacts the recording medium, is made smaller than the opening area at the opening end of the suction holes, which contacts the recording medium holding layer. This reduces the difference between the temperature above the adsorbing holes and the temperature above the member around the adsorbing holes and prevents the pattern of the adsorbing holes from appearing on an image.
Owner:KONICA MINOLTA INC
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