Disclosed is a closed stock ground including a stock ground. The stock ground comprises a storing shelf area (4) enclosed by lateral retaining walls (2) and longitudinal retaining walls (1) at four sides. A reclaimer (6) capable of moving along the longitudinal retaining walls (1) is disposed above the storing shelf area (4); a reclaiming mechanism used for pushing the material in the storing shelf area is disposed on the reclaimer (6); a storing shelf material input machine (45) and a storing shelf material stacking machine (44) are disposed above the reclaimer (6). A storing shelf material feeding machine (42) and a storing shelf output machine (43) are disposed at the bottom of the storing shelf area (4). Retaining walls are arranged at four sides of the stock ground, thereby improving the space utilization of the stock ground, and improving the stress properties of the retaining wall structure by forming a stable structure with the lateral retaining walls coordinating with the longitudinal retaining walls.
The present invention belongs to the technical field of metallurgy, and discloses a horizontal continuous feeding preheating device and an enhanced preheating method therefor. The scheme comprises that two dust removal ports are arranged at the front and rear parts of a horizontal continuous feeding preheating duct, and the horizontal continuous feeding preheating duct is divided into an enhanced preheating area and a flue gas preheating area by the two dust removal ports arranged at the front and rear parts of the horizontal continuous feeding preheating duct; burners are installed in the enhanced preheating area, and the two dust removal ports are connected with a flue gas adjusting distributor respectively by a flue gas pipeline the steel scrap preheating efficiency of the burners and electric arc furnace flue gas is increased by controlling the flow rate and temperature of mixed flue gas.
F27B 3/08 - Hearth-type furnaces, e.g. of reverberatory typeElectric arc furnaces heated electrically, e.g. electric arc furnaces, with or without any other source of heat
F27D 13/00 - Apparatus for preheating chargesArrangements for preheating charges
A coordinate system calibration method, used for coordinate system calibration between a multiocular vision system and a robot. A point light source is provided at a tail end of the robot, and the point light source is within the field of view range of the multiocular vision system. The calibration method comprises the following steps: performing calibration on the multiocular vision system (S1); identifying and positioning the point light source (S2); recording a coordinate group of the point light source at different positions, the coordinate group comprising coordinates of the point light source in a visual coordinate system and coordinates in a robot coordinate system (S3); and solving a transformation matrix between the visual coordinate system and the robot coordinate system according to the coordinate group of the point light source at different positions (S4). According to the method, coordinate system calibration between a multiocular vision system and a robot can be simply and quickly realized, expensive devices are not needed, and the calibration efficiency is greatly improved.
Provided is a heat transfer-based width adjustment method for a continuous casting mold. A boundary condition of a horizontal acceleration velocity α used in heat transfer-based width adjustment of a continuous casting mold is set to a minimum value subject to constraints of a maximum air gap and shell strength. The method can limit a maximum air gap between a copper plate of a narrow mold wall and a casting billet in a heat transfer-based width adjustment process for a continuous casting mold, thereby ensuring sufficient contact between the copper plate of the narrow mold wall and the casting billet. Moreover, a strain of the shell is controlled to be less than a critical strain, thereby preventing collapse of the casting billet, and preventing the casting billet from being scrapped as a result of an uneven narrow wall. Furthermore, since parameter settings of a width adjustment model dynamically change with a casting speed change, width adjustment can be performed within a full casting speed range without having to increase or decrease the casting speed.
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