Abstract: A cutting apparatus can include a cutting insert having one or more discharge grooves that are generally conical in shape. Each discharge groove can be positioned adjacent a respective back shoulder edge of the cutting insert to help direct metal or other material away from the workpiece as a hole, bore, or other type of aperture is formed in the workpiece. Some embodiments of the cutting insert can include a projection or shank that can be positionable within a hole of a rotatable member for attachment of the cutting insert to the member.

Abstract: Devices made of stainless steel for mixing gases and methods for mixing gases. Where the device includes a main pipe into which a plurality of plates are inserted and arranged parallel to one another and extend from one pipe wall to the opposite pipe wall of the main pipe. A distributor pipe from which a plurality of supply lines branch off outside the main pipe. Where each supply line leads into a separate plate of the plates and is connected in the plates to a plurality of channels that are connected via outlet openings to the main pipe. Where the outlet openings are installed at the end faces of the plates facing away from the gas flow when a gas flows through the main pipe and where the end faces of the plates facing away from the gas flow when a gas flows through the main pipe are flat.

Abstract: Rotary cutting tools are disclosed comprising shanks and replaceable cutting inserts are provided. A head of the cutting insert includes insert centering surfaces that contact the pocket centering walls of the shank, and insert drive surfaces that contact the torque transmitting pocket drive walls of the shank. The configurations and sizes of the shank and cutting insert features are controlled to provide improved torque transmission, rigidity and stability during operation of the rotary cutting tools.

Abstract: A rotary cutting tool has a tool shank and at least one guide pad, which is fastened on the outer circumference of the tool shank and has a radially external fluid groove. The guide pad has an inlet channel, via which the fluid groove is fluidly connected to an internal fluid line in the tool shank.

Abstract: The combination tool (2), in particular a drilling/chamfering tool, comprises a drill (6) extending in the longitudinal direction (4) with a clamping sleeve (8), which is designed to receive the drill (6) and fasten the drill (6) at a variable length and which has a holding seat (38) for a cutting insert (12). The drill (6) comprises a cutting region (22) provided with grooves (14), wherein the grooves (14) extend helically and are formed between two grooves (14) drill backs (18). At least one of the drill backs (18) is partially flattened to form an adjustment surface (16) for the cutting insert (12), wherein the adjustment surface (16) extends helically. As a result, a length adjustment over a large length range is made possible independently of the twist angle (?).

Abstract: Rotary cutting tools are disclosed comprising shanks and replaceable cutting inserts are provided. The shank comprises a pocket which receives an interchangeable cutting insert. The pocket includes a floor with a central pin-receiving hole, opposing pocket centering walls, and torque transmitting pocket drive walls. The cutting insert has a relatively long rear pin receivable in the central hole of the shank. A head of the cutting insert includes insert centering surfaces that contact the pocket centering walls of the shank, and insert drive surfaces that contact the torque transmitting pocket drive walls of the shank. The configurations and sizes of the shank and cutting insert features are controlled to provide improved torque transmission, rigidity and stability during operation of the rotary cutting tools.

Abstract: Operating panel (1) for a welding device (SG) comprising a welding parameter display unit (2) for displaying welding parameters, and comprising at least one operating element (3) which can be actuated manually by a user, wherein the operating panel (1) can be switched between a welding parameter selection mode and a welding parameter editing mode by actuating the operating element (3), wherein in the welding parameter selection mode one of the welding parameters of the welding parameter display unit (2) can be selected by rotating the operating element (3), and wherein in the welding parameter editing mode a parameter value of a selected welding parameter of the welding parameter display unit (2) can be set by rotating the operating element (3).

Abstract: The invention relates to a method for producing polymer powder compositions which are redispersible in water and which are based on polymerisates of one or more ethylenically unsaturated monomers. In a first step, an aqueous polymerisate dispersion is produced by means of a radically initiated polymerization of one or more ethylenically unsaturated monomers in an aqueous medium, said polymerisate dispersion being convened into the polymer powder composition which is redispersible in water by means of a diving process. The invention is characterized in that the polymerization and the drying process are each carried out in a continuous manner, and the polymerization and the diving process are carried out in separate interconnected modules.

Abstract: An apparatus is specified that comprises a rotary tool, wherein the rotary tool extends along a longitudinal axis and in an axial direction, wherein the rotary tool comprises a body, a cutting insert and a clamping rod, wherein the body has a shank on the rear-facing end, for clamping into a bracket, wherein the clamping rod extends through the body in the axial direction, wherein the clamping rod is adapted on the front-facing end to attach the cutting insert, wherein the clamping rod extends rearward towards the shank and can be actuated by means of a tool to attach the cutting insert to, or to detach the latter from, the body, wherein the clamping rod comprises an access hole arranged such that the clamping rod can be actuated while the rotary tool is clamped in the bracket. Further, a method for attaching or detaching a cutting insert on such an apparatus is specified.

Abstract: The present disclosure relates to a process and/or method for producing a polymer dispersion by free-radically initiated emulsion polymerization of radically polymerizable ethylenically unsaturated monomers within a polymerization reactor. The polymer dispersion obtained is transferred to a post-treatment reactor and is post-treated therein. The polymer dispersion within the post-treatment reactor is conveyed, simultaneously to the post-treatment, to a circuit for filtration and analysis and is then subsequently fed back into the post-treatment reactor.

Abstract: The invention relates to a modular tool comprising a body and an insert for machining a workpiece, wherein the insert comprises a tenon for insertion into a receptacle of the body, wherein the body comprises an access hole, through which the tenon is accessible for an assembly tool, wherein the tenon comprises a profile portion, which, upon insertion of the assembly tool into the access hole, engages with a lateral surface of the assembly tool so that, by a rotation of the assembly tool, the insert can be ejected from the receptacle. Furthermore, a method for ejecting an insert of such a modular tool is specified.

Abstract: Methods for preparing vinyl ester-ethylene copolymers and methods for recovering residual monomers when preparing the same. The method includes performing a stage (a) where radically initiated polymerization of vinyl esters, ethylene and optionally further ethylenically unsaturated monomers in an aqueous medium is performed. In a stage (b) a polymerization mixture from stage (a) is depressurized producing an ethylene-containing gas phase and an aqueous phase containing vinyl esters and vinyl ester-ethylene copolymers. Where the ethylene-containing gas phase separated off, then absorbed into vinyl esters and the mixture thus obtained is used in the radically initiated polymerization of vinyl esters, ethylene and optionally further ethylenically unsaturated monomers.

Abstract: The combination tool (2), in particular a drilling/chamfering tool, comprises a drill (6) extending in the longitudinal direction (4) with a clamping sleeve (8), which is designed to receive the drill (6) and fasten the drill (6) at a variable length and which has a holding seat (38) for a cutting insert (12). The drill (6) comprises a cutting region (22) provided with grooves (14), wherein the grooves (14) extend helically and are formed between two grooves (14) drill backs (18). At least one of the drill backs (18) is partially flattened to form an adjustment surface (16) for the cutting insert (12), wherein the adjustment surface (16) extends helically. As a result, a length adjustment over a large length range is made possible independently of the twist angle (?).

Abstract: Operating panel (1) for a welding device (SG) comprising a welding parameter display unit (2) for displaying welding parameters, and comprising at least one operating element (3) which can be actuated manually by a user, wherein the operating panel (1) can be switched between a welding parameter selection mode and a welding parameter editing mode by actuating the operating element (3), wherein in the welding parameter selection mode one of the welding parameters of the welding parameter display unit (2) can be selected by rotating the operating element (3), and wherein in the welding parameter editing mode a parameter value of a selected welding parameter of the welding parameter display unit (2) can be set by rotating the operating element (3).

Abstract: The present disclosure relates to a process and/or method for producing a polymer dispersion by free-radically initiated emulsion polymerization of radically polymerizable ethylenically unsaturated monomers within a polymerization reactor. The polymer dispersion obtained is transferred to a post-treatment reactor and is post-treated therein. The polymer dispersion within the post-treatment reactor is conveyed, simultaneously to the post-treatment, to a circuit for filtration and analysis and is then subsequently fed back into the post-treatment reactor.

Abstract: Higher throughput in aqueous addition polymerization is made possible by use of an external shell and tube heat exchanger operated in reverse mode, with coolant flowing through the tubes and polymerization mixture flowing through the shell around the tubes.

Abstract: Higher throughput in aqueous addition polymerization is made possible by use of an external shell and tube heat exchanger operated in reverse mode, with coolant flowing through the tubes and polymerization mixture flowing through the shell around the tubes.

Abstract: The invention relates to a method for producing polymer powder compositions which are redispersible in water and which are based on polymerisates of one or more ethylenically unsaturated monomers. In a first step, an aqueous polymerisate dispersion is produced by means of a radically initiated polymerization of one or more ethylenically unsaturated monomers in an aqueous medium, said polymerisate dispersion being convened into the polymer powder composition which is redispersible in water by means of a diving process. The invention is characterized in that the polymerization and the drying process are each carried out in a continuous manner, and the polymerization and the diving process are carried out in separate interconnected modules.

Abstract: Subjects of the invention are processes for preparing vinyl acetate-ethylene copolymers in the form of their aqueous dispersions or water-redispersible powders by means of radically initiated emulsion polymerization and optional subsequent drying of the resultant polymer dispersions, characterized in that the emulsion polymerization of vinyl acetate, ethylene and optionally one or more further ethylenically unsaturated monomers is carried out in the presence of one or more protective colloids in one or more Taylor reactors.

Abstract: Subjects of the invention are processes for preparing vinyl acetate-ethylene copolymers in the form of their aqueous dispersions or water-redispersible powders by means of radically initiated emulsion polymerization and optional subsequent drying of the resultant polymer dispersions, characterized in that the emulsion polymerization of vinyl acetate, ethylene and optionally one or more further ethylenically unsaturated monomers is carried out in the presence of one or more protective colloids in one or more Taylor reactors.