A method for controlling fiber cross-alignment in a nanofiber membrane, comprising: providing a multiple segment collector in an electrospinning device including a first and second segment electrically isolated from an intermediate segment positioned between the first and second segment, collectively presenting a cylindrical structure, rotating the cylindrical structure around a longitudinal axis proximate to an electrically charged fiber emitter; electrically grounding or charging edge conductors circumferentially resident on the first and second segment, maintaining intermediate collector electrically neutral; dispensing electrospun fiber toward the collector, the fiber attaching to edge conductors and spanning the separation space between edge conductors; attracting electrospun fiber attached to the edge conductors to the surface of the cylindrical structure, forming a first fiber layer; increasing or decreasing rotation speed of the cylindrical structure to alter the angular cross-alignment relationship between aligned nanofibers in adjacent layers, the rotation speed being altered to achieve a target relational angle.

A method for controlling fiber cross-alignment in a nanofiber membrane, comprising: providing a multiple segment collector in an electrospinning device including a first and second segment electrically isolated from an intermediate segment positioned between the first and second segment, collectively presenting a cylindrical structure, rotating the cylindrical structure around a longitudinal axis proximate to an electrically charged fiber emitter; electrically grounding or charging edge conductors circumferentially resident on the first and second segment, maintaining intermediate collector electrically neutral; dispensing electrospun fiber toward the collector, the fiber attaching to edge conductors and spanning the separation space between edge conductors; attracting electrospun fiber attached to the edge conductors to the surface of the cylindrical structure, forming a first fiber layer; increasing or decreasing rotation speed of the cylindrical structure to alter the angular cross-alignment relationship between aligned nanofibers in adjacent layers, the rotation speed being altered to achieve a target relational angle.

A method for controlling fiber cross-alignment in a nanofiber membrane, comprising: providing a multiple segment collector in an electrospinning device including a first and second segment electrically isolated from an intermediate segment positioned between the first and second segment, collectively presenting a cylindrical structure, rotating the cylindrical structure around a longitudinal axis proximate to an electrically charged fiber emitter; electrically grounding or charging edge conductors circumferentially resident on the first and second segment, maintaining intermediate collector electrically neutral; dispensing electrospun fiber toward the collector, the fiber attaching to edge conductors and spanning the separation space between edge conductors; attracting electrospun fiber attached to the edge conductors to the surface of the cylindrical structure, forming a first fiber layer; increasing or decreasing rotation speed of the cylindrical structure to alter the angular cross-alignment relationship between aligned nanofibers in adjacent layers, the rotation speed being altered to achieve a target relational angle.

A method for controlling fiber cross-alignment in a nanofiber membrane, comprising: providing a multiple segment collector in an electrospinning device including a first and second segment electrically isolated from an intermediate segment positioned between the first and second segment, collectively presenting a cylindrical structure, rotating the cylindrical structure around a longitudinal axis proximate to an electrically charged fiber emitter; electrically grounding or charging edge conductors circumferentially resident on the first and second segment, maintaining intermediate collector electrically neutral; dispensing electrospun fiber toward the collector, the fiber attaching to edge conductors and spanning the separation space between edge conductors; attracting electrospun fiber attached to the edge conductors to the surface of the cylindrical structure, forming a first fiber layer; increasing or decreasing rotation speed of the cylindrical structure to alter the angular cross-alignment relationship between aligned nanofibers in adjacent layers, the rotation speed being altered to achieve a target relational angle.

The present invention generally relates to an electrostatic coating system for spraying a stream of particles onto a medium, and in particular to a system comprising one or more apparatuses equipped with a powder coating suspension device. What is also contemplated is the use of a powder management system configured to supply predetermined powdered and air mixtures to the apparatus and a controller configured to adjust parameters of operation of both the apparatus and the powder management system. The present disclosure relates to an in-line industrial device able to coat paint, starch, thermoplastic materials, or any other powder material onto a medium by successively controlling a plurality of parameters.

The present invention generally relates to an electrostatic coating system for spraying a stream of particles onto a medium, and in particular to a system comprising one or more apparatuses equipped with a powder coating suspension device. What is also contemplated is the use of a powder management system configured to supply predetermined powdered and air mixtures to the apparatus and a controller configured to adjust parameters of operation of both the apparatus and the powder management system. The present disclosure relates to an in-line industrial device able to coat paint, starch, thermoplastic materials, or any other powder material onto a medium by successively controlling a plurality of parameters.

An electrostatic oiling system for use with single blanks in batch systems having an open spray chamber without the need for a negative vacuum chamber. Further, the provided electrostatic oiling system may utilize induction beams and a charge wall that allows for utilization of a smaller vacuum system. Further, the provided electrostatic oiling system may provide variable blank coverage without the need for metered pumps.

The present invention relates to the field of surface alloy pipe manufacturing, and provides a process and spraying equipment for arc spraying carbon steel pipes. The process includes the following steps: S1: installing a raw metal wire on a wire feeder, adjusting the wire feeding voltage according to the required thickness of spraying, and adjusting the spraying current according to the material of the raw metal wire; S2: spraying an inner and outer walls of the pipe through an inner wall spray gun and an outer wall spray gun; S3: after the pipe being sprayed, cooling it naturally to room temperature; S4: putting the cooled pipe into a heating furnace, adjusting the heating temperature according to the required surface alloy thickness, and cooling it in the furnace or natural cooling outside the furnace after the insulation is completed; meanwhile, a surface alloy layer is formed on the inner and/or outer wall of the carbon steel pipe; S5: after the pipe being cooled to room temperature, using a medium frequency heat treatment equipment to heat-treat the pipe through the heat treatment process. The present invention solves the problems that the existing arc spray equipment cannot spray the inner wall of the pipe, and the spray coating has poor bonding force with the pipe body and is easy to fall off. It greatly improves the wear resistance, high temperature resistance and anti-corrosion performance of the inner and outer wall surfaces of the pipe, and increases the pipe life.

The present invention relates to the field of surface alloy pipe manufacturing, and provides a process and spraying equipment for arc spraying carbon steel pipes. The process includes the following steps: S1: installing a raw metal wire on a wire feeder, adjusting the wire feeding voltage according to the required thickness of spraying, and adjusting the spraying current according to the material of the raw metal wire; S2: spraying an inner and outer walls of the pipe through an inner wall spray gun and an outer wall spray gun; S3: after the pipe being sprayed, cooling it naturally to room temperature; S4: putting the cooled pipe into a heating furnace, adjusting the heating temperature according to the required surface alloy thickness, and cooling it in the furnace or natural cooling outside the furnace after the insulation is completed; meanwhile, a surface alloy layer is formed on the inner and/or outer wall of the carbon steel pipe; S5: after the pipe being cooled to room temperature, using a medium frequency heat treatment equipment to heat-treat the pipe through the heat treatment process. The present invention solves the problems that the existing arc spray equipment cannot spray the inner wall of the pipe, and the spray coating has poor bonding force with the pipe body and is easy to fall off. It greatly improves the wear resistance, high temperature resistance and anti-corrosion performance of the inner and outer wall surfaces of the pipe, and increases the pipe life.

The present invention generally relates to an electrostatic coating system for spraying a stream of particles onto a medium, and in particular to a system comprising one or more apparatuses equipped with a powder coating suspension device. What is also contemplated is the use of a powder management system configured to supply predetermined powdered and air mixtures to the apparatus and a controller configured to adjust parameters of operation of both the apparatus and the powder management system. The present disclosure relates to an in-line industrial device able to coat paint, starch, thermoplastic materials, or any other powder material onto a medium by successively controlling a plurality of parameters.