Abstract: A high temperature iron-chromium-aluminium (FeCrAl) alloy tube extending along a longitudinal axis, wherein the tube is formed from a continuous strip of a high temperature FeCrAl alloy and comprises a helical welded seam. The high temperature FeCrAl alloy tube is manufactured by feeding a continuous strip of the high temperature FeCrAl alloy toward a tube shaping station, helically winding the strip such that long edges of the strip abut each other and a rotating tube moving forward in a direction parallel to its longitudinal axis is formed, and continuously joining said abutting long edges together in a welding process directly when the tube is formed, whereby a welded tube comprising a helical welded seam is obtained.

Abstract: A cutting apparatus suitable for creating tunnels and subterranean roadways includes independently pivoting supports that each carry a respective independently pivoting arm and a rotatable cutting head. Each cutting head via the supports and arms, is configured to slew laterally outward in a sideways direction and to pivot in a vertical upward and downward direction. The supports and arms are mounted on a linear moving sled carried by a main frame.

Abstract: An arrangement and method of utilizing rock drilling information in a mine whereby drill holes are drilled in a surrounding rock material by a first mining vehicle. During drilling measuring data is produced and is inputted to a monitoring device for analyzing procedures. The monitoring device produces rock condition data of the rock material being drilled. The produced rock condition data is then implemented in a second mining vehicle.

Abstract: The present invention relates to a rotary cutting apparatus for cutting a web of material, including a cutting unit rotatably mounted on a support, a rotary cutter rotatably disposed in the cutting unit, the rotary cutter having a longitudinal axis, and at least one cutting edge disposed on the rotary cutter, wherein the at least one cutting edge is orientated at an angle to the longitudinal axis of the cutter. The cutting unit being counter orientated to the feed direction of the web by an adjustable angle equal to the cutting edge angle, less than the cutting edge angle or greater than the cutting edge angle.

Abstract: The present disclosure relates to a wear part having high wear resistance and strength and a method of making the same. The wear part is composed of a compound body of cemented carbide particles cast with a low-carbon steel alloy. The low-carbon steel alloy has a carbon content corresponding to a carbon equivalent Ceq=wt % C+0.3(wt % Si+wt % P) of about 0.1 to about 1.5 weight %. The wear part could include a body with a plurality of inserts of cemented carbide particles cast into a low-carbon steel alloy disposed in the body. Each of the plurality of cemented carbide inserts are coated with at least one layer of oxidation protection/chemical resistant material. The plurality of inserts are directly fixed onto a mold corresponding to the shape of the wear part. The cemented carbide inserts are then encapsulated with the molten low-carbon steel alloy to cast the cemented carbide inserts with the low-carbon steel alloy.

Abstract: In the production of thermoplastic granulate material, after mixing the starting materials, it is common in the state of the art for these materials to be kneaded and compressed in extruders, with subsequent granulation. According to the invention, no extruder is used, rather the starting materials for the thermoplastic granulate material are supplied directly to a double belt press after the mixing. Subsequently, the generated web-type to sheet-type body is processed into a granulate material by means of grinding, or is used as a web-type, sheet-type, strip-type or film-type intermediate product for the production of a further intermediate product or end products.

Abstract: A gyratory crusher frame part and a gyratory crusher include a topshell and spider assembly configured to minimize stress concentrations. An annular flange is formed at the junction between a lower region of each spider arm and an upper region of the topshell. Optimization of loading force transfer and a reduction in stress concentration is achieved by positioning the spider arms radially inward relative to an outer circumferential perimeter of the flange.

Abstract: A drill string and a threaded coupling region for a drill string include threaded male and female ends that are optimized to maximize energy transmission efficiency for percussion drilling. The coupling includes a male spigot to be received within a female sleeve, such that an axial length of the overlap of the spigot within the sleeve is less than an outside diameter of the sleeve.

Abstract: Automated fixture layout is approached in two distinct stages. First, the spatial locations of clamping points on the work piece are determined to ensure immobility of the fixtured part under any infinitesimal perturbation. Second, spatial locations are matched against a user-specified library of reconfigurable clamps to synthesize a valid fixture layout or configuration that includes clamps that are accessible and collision free. The spatial locations matching during the second stage can be the same spatial locations chosen in the first stage to ensure immobility, or a different set of spatial locations.

Abstract: A process of producing an austenitic stainless steel tube comprises the steps of: a) producing an ingot or a continuous casted billet of the austenitic stainless steel, b) hot extruding the ingot or the billet obtained from step a) into a tube, c) cold rolling the tube obtained from step b) to a final dimension thereof. The outer diameter D of the cold rolled tube is 70-250 mm and the thickness t thereof is 6-25 mm, and the cold rolling step is performed such that the following formula is satisfied: (2.5×Rc+1.85×Rh?17.7×Q)=(Rp0.2target+49.3?1073×C?21Cr?7.17×Mo?833.3×N)±Z ??(1) wherein Rp0.2target is targeted yield strength and is 750?Rp0.2target?1000 MPa, 30?Rc?75%, 50%?Rh?90%, 1?Q?3.6, and Z is 65.

Abstract: A crusher wear resistant liner for positioning at a crusher bottom shell includes a plurality of modular wear resistant plates mountable at an inside surface of the bottom shell and positioned side-by-side to surround and protect the bottom shell interior. To prevent independent dislodgement of each plate and liner, respective inter-engaging formations are provided at each plate to contact at least one adjacent plate of the assembly to arrest any unintentional downward movement in the event that the primary fixings become ineffective.

Abstract: A process of producing a duplex stainless steel tube comprises the steps of: a) producing an ingot or a continuous casted billet of said duplex stainless steel; b) hot extruding the ingot or the billet obtained from step a) into a tube; and c) cold rolling the tube obtained from step b) to a final dimension thereof. The outer diameter D and the wall thickness t of the cold rolled tube is 50-250 mm respectively is 5-25 mm, and, for the cold rolling step, R and Q are set such that the following formula is satisfied: Rp0.2target=416.53+113.26·log Q+4.0479·R+2694.9·C %?82.750·(log Q)2?0.04279·R2?2.2601·log Q·R+16.9·Cr %+26.1·Mo %+83.6·N %+Z??(1) wherein Rp0.2target is targeted yield strength and is 800-1100 MPa and 0<Q<3.6.

Abstract: A process for producing L-menthol in solid form, including the following steps: providing a menthol melt, feeding the melt to a drop former having a rotating, perforated outer drum and a fixed nozzle strip adjacent to the inside of the outer drum, depositing the menthol melt produced by the drop former onto a continuous cooling belt, solidifying the menthol melt during transport on the cooling belt to form L-menthol pellets and taking the pellets off in the region of a deflection drum for the cooling belt.

Abstract: A method and mine vehicle includes at least one scanning device for scanning surroundings of the mine vehicle and producing operational point cloud data. The mine vehicle has a control unit provided with reference point cloud data of the mine. The control unit is configured to match the operational point cloud data to the reference point cloud data in order to determine position of the mine vehicle. The control unit further includes a mine work plan, which is connected to the detected position of the mine vehicle.

Abstract: A tool and a cutting insert for chip removing machining includes a tool body with an insert seat, a cutting insert mounted in the insert seat, and a fastening member. The cutting insert includes a first locking member extending in an area located outside of a central axis of the cutting insert. A second locking member configured to engage with the first locking member is provided in the insert seat. The fastening member extends through a through-hole and bears on a lower contact region of the cutting insert to press the cutting insert against a top support member provided rotationally ahead of the insert seat so that the second and first locking members lock with each other and form a radial support for the cutting insert, and on the other hand it presses an axial support region in the side surface of the cutting insert against an axial contact surface provided in the insert seat.

Abstract: A toolholder includes a bottom abutment surface, a projection extending upwardly from the bottom abutment surface, the projection including an internally threaded opening, having a central axis that is offset from a central axis of the projection in a first direction, and a clamping screw having external threads for mating with threads of the internally threaded opening and a head having a bottom clamping surface shaped as a truncated cone for contacting an insert clamping surface and urging an insert substantially in a first direction when the clamping screw is tightened relative to the toolholder and the insert. The toolholder also includes at least one abutment member extending from a side wall of the projection in a radial direction, each abutment member having an abutment point, at least which is closer to the central axis of the projection than to the central axis of the internally threaded opening.

Abstract: A gyratory crusher crushing head, removably mounted a crushing shell, includes a circumferential groove is formed in an outer facing surface of the crushing head. The groove is positioned towards a second lower end at the outward facing surface relative to an axial length of the crushing head. The groove and its relative axial positioning minimizes the stress concentrations at the crushing head resulting from forces tangential to the outward facing surface.

Abstract: The present disclosure relates to a molybdenum silicide based composition comprising aluminum oxide (Al2O3) and to the use thereof in high temperature applications.

Abstract: A method and apparatus for disconnecting an end rod from a drill string coupled together by a threaded connection is provided. A rod handling apparatus includes a gripper unit having a floating sled with a sensor unit configured to monitor relative axial position of the sled relative to a frame of the gripper unit to determine a decoupling of the threaded connection and a separation of an end rod from the drill string.

Abstract: An austenitic alloy for high temperature use, particularly for use in resistance heating elements. The alloy includes primarily the elements Fe, Ni, and Cr, and it has the following main composition, given in weight %, Ni 38-48, Cr 18-24, Si 1.0-1.9, C <0.1, and the balance Fe. The alloy provides good hot form stability, good oxidation resistance, and a relatively high electrical resistance coupled with a low change in resistance as a function of temperature.