Abstract: Provided in the present invention are a double-point incremental forming manufacturing method and apparatus, and an electronic device. The method comprises: acquiring a three-dimensional model of a part to be formed; slicing and layering the three-dimensional model to acquire a plurality of 2D curve paths, and respectively generating a master working path of a master robot according to each 2D curve path; and for each master working path, determining and generating a support path of a slave robot according to the master working path and the shape of the three-dimensional model; and processing and manufacturing said part according to the master working path and the support path and by applying a double-point incremental forming method. The present invention can effectively improve the precision of a formed part in a timely manner, and reduce the experiment cost.

Abstract: The present invention provides a double-point incremental forming manufacturing method and apparatus based on deep reinforcement learning.

Abstract: A micro-molybdenum-type weathering bridge steel plate disclosed by the present invention is characterized in that the steel plate is smelted from the following components by weight: C: 0.05-0.08%, Si: 0.30-0.50%, Mn: 1.25-1.35%, P: 0.010-0.014%, S?0.003%, Nb: 0.020-0.030%, Ti: 0.010-0.020%, V: 0.040-0.050%, Cu: 0.25-0.40%, Ni: 0.25-0.35%, Cr: 0.45-0.55%, Mo: 0.03-0.08%, Alt: 0.020-0.040%, and the balance from Fe and impurities. Less content of molybdenum reduces the production cost of the steel plate, the yield strength of the steel plate is 500-600 MPa, the yield strength ratio is ?0.85, and the maximum thickness of the steel plate can reach 80 mm.

Abstract: A method for generating a path for wire arc additive manufacturing is provided in this disclosure, which relates to the technical field of additive manufacturing, and includes following steps: generating a model in which a three-dimensional model is established according to angle constraint of the wire arc additive manufacturing; layering the model in which the three-dimensional model is layered along a height direction; selecting discrete points in which a plurality of discrete points are selected according to curve curvature for different layers of the model; obtaining coordinates of the discrete points; determining a printing direction; obtaining coordinates of the discrete points and corresponding printing directions; and generating a control program. The method according to the disclosure is simple, has a wide application range, can satisfy printing of complex shapes, and can serve to well form for structures with maximum printing inclination of 60 degrees, thus improving forming effect of printing.

Abstract: Disclosed is 500-MPa low-yield-ratio weather-resistant bridge steel and a manufacturing method therefor; the weather-resistant bridge steel includes the following components in percentage by mass: C: 0.04%-0.09%, Si: 0.15%-0.30%, Mn: 1.40%-1.50%, P: 0.009%-0.015%, S: ?0.002%, Nb: 0.020%-0.050%, Ti: 0.010%-0.020%, V: 0.010%-0.030%, Cu: 0.30%-0.40%, Ni: 0.30%-0.45%, Cr: 0.45%-0.60%, Mo: 0.08%-0.15%, Alt: 0.02%-0.04%, and the balance Fe and inevitable impurities; through scientific component designing and a matched manufacturing method combining controlled rolling and cooling and tempering, the weather-resistant bridge steel has a low yield ratio, high low-temperature toughness and high elongation.

Abstract: The invention disclosures a frame structure optimization method based on 3D printing, comprising following steps: a. inputting the information of force and material property of frame according to design requirement, and building an initial frame model by adopting generative design; b. conducting area reduction optimization for the initial frame model by using an edge contraction algorithm based on quadric error as metric cost, a simplification frame model is obtained; c. arranging point set in cavity of the simplification frame model, connecting each point in the point set, and calculating and retaining the most efficient point of distribution mode and connection mode in the point set based on a multi-objective optimization algorithm, deleting extra points, an optimization frame model is obtained; d. inputting tube radius, transforming the structure in the optimization frame model from the line to the body to obtain 3D printing model of the frame.

Abstract: An integrated electrostatic discharge (ESD) shunting circuit includes a III-V semiconductor layer, and a first drain-less high electron mobility transistor (HEMT) or a metal-semiconductor FET (MESFET) transistor having a first gate and at least a second drain-less HEMT or MESFET having a second gate formed in the substrate. The HEMTs or MESFETs include a donor layer on the semiconductor layer, no drains, and a source including an ohmic contact layer on the donor layer.

Abstract: A method of producing corn starch by enzymatic process involving: soaking the corn; crushing the corn, separating and washing embryo; fine grinding; washing and drying fiber; separating and drying protein; washing, dewatering and drying the starch. An enzyme preparation is added before the step of washing, dewatering and drying the starch; the enzyme preparation is cellulose, or xylanase, or combination of the cellulose and the xylanase; and addition of the enzyme preparation is from 0.001% to 0.08% by weight of the corn. Based on the technology of traditional wet process, the method of the present invention comprises a step of adding enzyme preparation in the process of separating the corn, which improves the effect and the efficiency of mechanical separation, and further improves the purity and yield of the substance separated while also reducing the energy consumption.

Abstract: A method of producing corn starch by enzymatic process involving: soaking the corn; crushing the corn, separating and washing embryo; fine grinding; washing and drying fiber; separating and drying protein; washing, dewatering and drying the starch. An enzyme preparation is added before the step of washing, dewatering and drying the starch; the enzyme preparation is cellulose, or xylanase, or combination of the cellulose and the xylanase; and addition of the enzyme preparation is from 0.001% to 0.08% by weight of the corn. Based on the technology of traditional wet process, the method of the present invention comprises a step of adding enzyme preparation in the process of separating the corn, which improves the effect and the efficiency of mechanical separation, and further improves the purity and yield of the substance separated while also reducing the energy consumption.

Abstract: A method of producing corn starch by enzymatic process involving: soaking the corn; crushing the corn, separating and washing embryo; fine grinding; washing and drying fiber; separating and drying protein; washing, dewatering and drying the starch. An enzyme preparation is added before the step of washing, dewatering and drying the starch; the enzyme preparation is cellulose, or xylanase, or combination of the cellulose and the xylanase; and addition of the enzyme preparation is from 0.001% to 0.08% by weight of the corn. Based on the technology of traditional wet process, the method of the present invention comprises a step of adding enzyme preparation in the process of separating the corn, which improves the effect and the efficiency of mechanical separation, and further improves the purity and yield of the substance separated while also reducing the energy consumption.

Abstract: A method of producing corn starch by enzymatic process involving: soaking the corn; crushing the corn, separating and washing embryo; fine grinding; washing and drying fiber; separating and drying protein; washing, dewatering and drying the starch. An enzyme preparation is added before the step of washing, dewatering and drying the starch; the enzyme preparation is cellulose, or xylanase, or combination of the cellulose and the xylanase; and addition of the enzyme preparation is from 0.001% to 0.08% by weight of the corn. Based on the technology of traditional wet process, the method of the present invention comprises a step of adding enzyme preparation in the process of separating the corn, which improves the effect and the efficiency of mechanical separation, and further improves the purity and yield of the substance separated while also reducing the energy consumption.

Abstract: An integrated electrostatic discharge (ESD) shunting circuit includes a III-V semiconductor layer, and a first drain-less high electron mobility transistor (HEMT) or a metal-semiconductor FET (MESFET) transistor having a first gate and at least a second drain-less HEMT or MESFET having a second gate formed in the substrate. The HEMTs or MESFETs include a donor layer on the semiconductor layer, no drains, and a source including an ohmic contact layer on the donor layer.