A method of wire electric discharge machining (wEDM) a feature in a part includes using wEDM, cutting and detaching a slug from a portion of the part that is to be detached from the part to define the feature, and thereby defining a validation cut-out in the portion, and using wEDM, cutting and detaching the portion having the validation cut-out from the part and thereby defining the feature.

A method of wire electric discharge machining (wEDM) a feature in a part includes using wEDM, cutting and detaching a slug from a portion of the part that is to be detached from the part to define the feature, and thereby defining a validation cut-out in the portion, and using wEDM, cutting and detaching the portion having the validation cut-out from the part and thereby defining the feature.

A method for forming a heat exchanger plate includes: securing a wave form metallic sheet to a heat exchanger plate substrate, the substrate comprising a first face and a second face opposite the first face, the securing of the wave form metallic sheet being to the first face; and removing peaks of the sheet.

A method for forming a heat exchanger plate includes: securing a wave form metallic sheet to a heat exchanger plate substrate, the substrate comprising a first face and a second face opposite the first face, the securing of the wave form metallic sheet being to the first face; and removing peaks of the sheet.

The present disclosure relates to a deburring device and method for a metal workpiece. The deburring device for the metal workpiece includes a power source, an insulating tube, a tank and an electrolyte contained in the tank. A first end of the insulating tube communicates with the electrolyte, and a second end thereof projects into a hole with burrs to be removed in the workpiece. A first pole of the power source is conductive with the workpiece, and a second pole thereof is configured to be conductive with the electrolyte. A gas layer can be formed when the power source is turned on and the electrolyte is introduced into the burr location in the hole through the insulating tube, and the gas layer is broken down under the action of a voltage to remove the burrs.

The present disclosure relates to a deburring device and method for a metal workpiece. The deburring device for the metal workpiece includes a power source, an insulating tube, a tank and an electrolyte contained in the tank. A first end of the insulating tube communicates with the electrolyte, and a second end thereof projects into a hole with burrs to be removed in the workpiece. A first pole of the power source is conductive with the workpiece, and a second pole thereof is configured to be conductive with the electrolyte. A gas layer can be formed when the power source is turned on and the electrolyte is introduced into the burr location in the hole through the insulating tube, and the gas layer is broken down under the action of a voltage to remove the burrs.

Disclosed is an electrode arrangement for the defined rounding or deburring of edges of electrically conductive components, in particular turbine components, by means of electrochemical machining with at least one working electrode (5), which has a tubular electrode carrier, through which an electrolyte inflow line (10) is provided, the electrode carrier having on the front end a closure (13, 18), which is arranged such that the electrolyte inflow line in the axial direction of the electrode carrier is closed, and at least one outlet opening (19) being arranged in the radial direction. Also disclosed is a self-centering electrode arrangement and an installation for the defined rounding or deburring of edges of electrically conductive components by means of electrochemical machining with at least one corresponding electrode arrangement and also a method using the electrode arrangements and the described installation.

Disclosed is an electrode arrangement for the defined rounding or deburring of edges of electrically conductive components, in particular turbine components, by means of electrochemical machining with at least one working electrode (5), which has a tubular electrode carrier, through which an electrolyte inflow line (10) is provided, the electrode carrier having on the front end a closure (13, 18), which is arranged such that the electrolyte inflow line in the axial direction of the electrode carrier is closed, and at least one outlet opening (19) being arranged in the radial direction. Also disclosed is a self-centering electrode arrangement and an installation for the defined rounding or deburring of edges of electrically conductive components by means of electrochemical machining with at least one corresponding electrode arrangement and also a method using the electrode arrangements and the described installation.

This paper describes an invention involving an electrochemical discharge-enabled micro-grinding process for micro-components of silicon-based materials. The specific machining method is described below. A micro-grinding tool and an auxiliary electrode are respectively connected to the negative and positive electrodes of a pulsed DC power supply. When the current flows through the loop, an electrochemical hydrogen evolution reaction (HER) occurs at the micro-grinding tool in the grinding fluid, which generate multiple hydrogen bubbles. The bubbles coalesce into an insulating gas film and separate the micro-grinding tool from the grinding fluid; when the critical voltage is reached, the gas film is broken down and an electrochemical discharge occurs accompanied by discharge spark; under the action of the discharge spark, the surface material of the workpiece in the discharge-affected region is directly ablated to generate a heat-affected layer (HAL), namely, physical modification.

This paper describes an invention involving an electrochemical discharge-enabled micro-grinding process for micro-components of silicon-based materials. The specific machining method is described below. A micro-grinding tool and an auxiliary electrode are respectively connected to the negative and positive electrodes of a pulsed DC power supply. When the current flows through the loop, an electrochemical hydrogen evolution reaction (HER) occurs at the micro-grinding tool in the grinding fluid, which generate multiple hydrogen bubbles. The bubbles coalesce into an insulating gas film and separate the micro-grinding tool from the grinding fluid; when the critical voltage is reached, the gas film is broken down and an electrochemical discharge occurs accompanied by discharge spark; under the action of the discharge spark, the surface material of the workpiece in the discharge-affected region is directly ablated to generate a heat-affected layer (HAL), namely, physical modification.