Abstract: A load-moving system and a method for controlling the load-moving system for a heat treating furnace are described where the method includes detecting and transmitting signals and positions of the load-moving system as the load-moving system traverses a plurality of positions into, in, and out of the heat treating furnace. The signals being detected include one or more of: current, torque, or power used by the load-moving system at a determined position and/or time.

Abstract: A carrier transport system transports a plurality of carriers by a transport conveyor into a heating furnace, advances a comb-shaped carrier stopper having a plurality of protrusions toward the carriers, moves the carriers by the transport conveyor in a transport direction to engage cutout grooves, provided respectively for the carriers, with the protrusions of the carrier stopper to thereby position the carriers at a time. The carrier transport system advances the carrier stopper toward the carriers to insert distal ends of the protrusions of the carrier stopper into insertion holes, and then determines, on the basis of a moved distance X of the carrier stopper, whether the carriers are properly positioned.

Abstract: A drive system for a roller conveyor is described. The drive system may comprise a motor and a driving loop driven by the motor and having a driving side and a return side. The drive system may further comprise a first reducer configured to drive a rotation of the driving loop in a forward direction, a second reducer configured to drive the rotation of the driving loop in a reverse direction, and at least one sprocket driven by the driving side of the driving loop. The at least one sprocket may be configured to drive a rotation of at least one roller of the roller conveyor in the forward direction when the driving loop is rotating in the forward direction, and in the reverse direction when the driving loop is rotating in the reverse direction.

Abstract: The invention relates to a device for loading and unloading a heat treatment furnace and to a corresponding method. Heat treatment furnaces are normally loaded and unloaded by means of a so-called elevator. During unloading, a removed workpiece is usually lowered by means of the elevator into an oil bath, in which it is then removed from the elevator. Oil is then transferred into the furnace chamber via the oil-covered elevator. Such an application of oil is avoided by means of a device comprising a frame rack having a first and a second level, which are disposed parallel above each other, and are connected to each other by means of a plurality of frame braces, wherein the first and the second levels have a plurality of openings and the frame braces have guide means.

Abstract: The invention concerns a method for cooling or quenching slabs and sheets (2) with water in a cooling pond (1, 14) wherein the slabs and the sheets (2), previously set upright by a tilting device (18), are lowered and temporarily maintained in position on edge. The inventive method is characterized in that the slabs and the sheets are sprayed with the cooling water. Therefor, the cooling pond (1) has, on both sides of the lowered slabs and sheets (2) jet devices (10; 11a, 11b) directed towards the surfaces of the large sides of the slabs or sheets and connected to a cooling water circuit which comprises means for reducing the water filling supply from a maximum upper water level (13b) to a lower water level (13a).

Abstract: A golf shaft includes: a hollow tubular structure; and a gradient structure in which an amount of retained austenite is increased from an approximate center in a thickness direction of the hollow tubular structure to a surface of the hollow tubular structure.

Abstract: Apparatus for the rolling and heat treatment of elongated metal product of relatively small cross section, such as rods and bars, is described in which the elements required for the conduct of a variety of heat treatments are arranged in in-line disposition whereby any of several heat treatment procedures can be performed on the product without need for transferring the product to remotely located heat treatment facilities. The methods of performing various heat treatments through use of the disclosed apparatus are also described.

Abstract: A facility for in-line heat treatment of hot-rolled products, for example, long rods (16) includes: a tank (11) suitable for containing a refrigerating liquid medium (12), a plate (13) with stationary rakes (14) and mobile rakes (15) suitable for receiving the products (16) and transporting them through the tank (11) and outside of it on heat treatment performed, and closure lids (27) arranged above the plate (13).

Abstract: A device for tempering steel tubes comprising an immersion tank (6) for cooling fluid, a chassi (2) for horizontally supporting the tube (5) to be tempered in the tank (6), means for displacing the chassi (2) from a suspended position over the tank to a second position in which the tube is inside the tank, means (3i, 4i) for maintaining the tube on the chassi so that it does not float and a cooling fluid injection nozzle (1) abuttable against an end of the tube (5) for injecting the cooling fluid into the tube. The invention provides an injection nozzle support actuable (9) for coupling the nozzle (1) to the end of the tube (5) in the suspended position and allowing it to accompany the tube to the second position.

Abstract: An apparatus and a process for the zone-annealing of a workpiece (1) consisting of a high-temperature material, in which the workpiece (1) is hung on a suspension device (2) actuated via a roller (3) driven by a drive motor (4) and is provided with a plate-shaped covering screen (10) having an orifice. For the dipping of the workpiece (1), there is underneath the latter a salt bath (5) which is enclosed in an insulating vessel (6) and is provided with a heating system (7) with centrally symmetrical guide plates (8) and which is closed off at the top by means of a floating insulating cover (9). The cooling of the part of the workpiece (1) which is not immersed is guaranteed by a cooling body (11) through which cooling air (14) flows and which has a central passage (12) and, at the lower end of the passage (12), a projecting edge (13) serving as a stop for the covering screen (10).

Abstract: A method of dehydrating metal pieces including immersing the pieces in an oil heated to or above the boiling point of water for a time to boil off the water and then removing the pieces from the oil. An apparatus for the dehydration of metal pieces includes a container for carrying the pieces to be dehydrated, a receptacle for holding oil in which the chips are to be immersed, means for heating the oil to or about the boiling point of water, and means for introducing the container into the receptacle to immerse the pieces in the oil and removing the container and pieces from the oil.

Abstract: Impregnated wood and other impregnated cellulose based materials are dried in high boiling drying media, drying oil, under reduced pressure. During the treatment the material is withdrawn from direct contact with the drying medium at several times. The absorption of oil in the materials can hereby be controlled. Materials of different qualities and origin can be dried with good results and the oil absorption does not have to be made dependent on the penetration depth of the impregnating solution. An autoclave for drying of wood according to this process preferably has a rectangular inner cross section and is provided with means for lifting and lowering the materials. Preferably a lifting table or frame.

Abstract: Concave rails 17, upon which a pipe which is to be treated by at least partial immersion can be placed, are fixed in the bottom of a furnace 1 which contains a treatment bath M. In order to guarantee that the pipe is immersed over the whole of its cross section and in order to eliminate the risk of it becoming oval, the furnace is subjected to alternating rotation about its axis XX, which compels the pipe to turn on itself by rolling on the rails 17. The handling of the pipe is achieved by arms 12 which are assembled in a pivoting manner on the external wall of the furnace and controlled by an actuator 15.

Abstract: Hot pipes are tempered in an oil bath contained in a tapered, covered pan; a flap is temporarily opened for feeding, but closed when oil vapor develops, to be sucked off without contaminating the environment. Pan and cover structure are supplemented to prevent uncontrolled escape of vapor during treatment. Different handling devices for pipes in the interior of the pan are described.

Abstract: A process for effecting an annealing treatment of a spheroidal or lamellar graphite cast iron pipe. While the pipe is driven in rotation about the axis of the pipe, it is suspended substantially horizontally as it issues from the centrifugal casting machine and the pipe is partly immersed in a bath of metal at the desired temperature. An installation for carrying out this process comprises an elongate vessel having a horizontal axis and containing a bath of molten metal at the required temperature. A withdrawable device is provided outside the bath for suspending the pipe in a substantially horizontal position and plunging the pipe partly in the bath while driving the pipe in rotation about the axis of the pipe.

Abstract: A motorized carriage for depositing and removing heated metal articles such as cast or rolled slabs, into and from adjacent compartments of an enlongated cooling basin. The carriage consists of a movable carrier crossbeam which has several vertical downwardly extending rotatable spaced-apart fingers, each having two horizontal perpendicular extensions. Upon a 90.degree. rotation the fingers release a hot slab and grasp a cooled slab.

Abstract: Cooling device for slabs comprising a cooling trough and a locating frame provided with compartments in the cooling trough for the vertical location of the slabs by means of a crane able to travel on a track above or along the cooling trough, which crane engages the slabs in an upright position with suitable gripper devices and places them in the locating frame or lifts them from the latter after cooling. The apparatus further comprises two independent tilting devices in the region of the delivery and discharge roller beds for placing the slabs in an upright position and a flat position. The two independent tilting devices are located in the region of the same end of the slab-cooling trough and staggered with respect to each other such that the center-to-center distance of two slabs placed in an upright position by the latter and located in the range of the travelling crane corresponds to the center-to-center distance between the compartments of the locating frame.

Abstract: An apparatus for heat treating elongate articles including a furnace arranged above a quenching liquid reservoir and guide elements for guiding heated elongate articles from the furnace into the quenching liquid. In a preferred embodiment, the furnace utilizes a plurality of elongate tubes which receive detachably held elongate articles. Upon release, the elongate articles fall while oriented vertically by the guide elements into the quenching liquid. Warping or bending of the elongate articles is thereby prevented during the transfer from the furnace to the quenching liquid.

Abstract: Rows of stakes rising from several parallel beams in a soaking pit form a multiplicity of compartments each designed to receive one or more slabs coming to rest on a pair of such beams. The slabs are carried hot to the pit and cold from the pit by a railborne transporter including a traverse provided with two sets of fixed vertical guide bars hanging down between the rows of stakes, these sets being separated in the direction of travel by twice the stake spacing and flanking an array of vertically reciprocable gripper arms lowerable to the level of the beams between the rows of stakes. The gripper arms, mounted on carriages guided by the bars, define with them two carrying cages, alignable with a pair of adjacent pit compartments, and are provided with retractable feet that can be alternately extended across the bottom of one or the other cage for supporting a hot slab to be deposited in one compartment and then extracting a cooled slab from the adjoining compartment.