Abstract: Method for continuously mixing polymer materials by means of a continuous mixing machine having a mixing chamber provided with at least one opening for supplying the polymer and at least one mouth for discharging the mixture and having arranged inside it a pair of rotors parallel with one another, the method includes the stages of:supplying the material and any additives to the mixing chamber through the supply mouth; andmixing and feeding the materials towards the outlet, by pre-mixing performed by axial sections of rotors rotating tangentially with respect to one another, and subsequent mixing performed by axial sections of the rotors rotating in a mutually intermeshing manner.

Abstract: Machine with two generally converging threaded rotors (5) for the extrusion of plastomers, elastomers and the like, comprising a structure (1, 2, 3) supporting a housing (4) containing the rotors (5), a casing (6) containing a pair of reducers (7), a device (11) for generating the movement and devices (10) for synchronized transmission thereof to the two reducers (7), wherein said housing containing the rotors (5) and said casing (6) containing the reducers are rigidly fixed to the support structure (1, 2, 3) and integrally connected together via a housing (8) arranged between the two and containing first means (8a, 8c) for supporting the rotors (5), said rotors being formed in two separate parts (5a, 5b), removably joined to one another, said devices (10) for synchronized transmission of the movement being integral with the bottom part of the said casing (6) and having a high-speed shaft (12) arranged along an axis forming an angle with the axis of the associated rotor (5) and coaxial with the high-speed sha

Abstract: Mixing machine for elastomers, plastomers and the like, comprising a closed mixing chamber (8) having housed inside it the rotors (4) rotating about respective parallel and horizontal axes of rotation (4a), wherein said chamber (8) has semi-cylindrical walls (6) with axes (6a) parallel to the axes (4a) of rotation of the rotors (4) and symmetrically translated with respect to the latter, said translation being effected outwards in a direction lying on the horizontal plane containing said axes of the walls (6) and the rotors (4) and perpendicular to the latter.

Abstract: Machine for the extrusion of polymers and the like, comprising a pair of threaded rotors (5) with axes which are generally converging with respect to each other and means (7) for synchronized transmission of the movement to the said rotors (5), wherein each rotor (5) is made to rotate by means of its own actuating motor (8).

Abstract: A sizing stand (10) for rolling hot-rolled bars (17) comprises at least one pair of rolling rolls (13) carried by chocks (12) mounted on a support frame (11). Said stand also comprises power means (14) able to compression-preload the rolling system with a load greater than the maximum working load.

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: An apparatus for receiving batches of material from a mixer for continuously feeding the material to an extrusion or rolling machine has a vertical hopper which is provided on opposite sides with conical augers. The conical augers are received in respective frames which can be tilted so as to swing the augers from an inclined position wherein the augers converge downwardly in the hopper in a V pattern into substantially horizontal inoperative positions.

Abstract: A rolling stand with tie-rods, having extremely high strength to axial stresses, which includes a stand base supporting at least two rolling rolls supported by carriers which can be vertically moved in order to be approached or moved away from each other by means of four vertical tie-rods having screw-threaded portions. The screw-threaded portions are provided on opposite sides of at least one pair of support feet arranged between the stand base and the carriers which support and contain a central smooth portion of the tie-rods. A contoured portion extends from at least one of the support feet upwards and downwards in a parallel direction to the tie-rods. The contoured portion houses and guides a vertical rib protruding outwards from the carriers. Both contoured portion and the vertical rib engage, on mutually opposite surfaces, freely removable adjustment/sliding elements.

Abstract: An apparatus for actuating the rod of a presser element of a mixing machine of the internal type which has a lower mixing assembly and an upper structure for feeding of the material. At least one pair of guides are arranged opposite each other on the sides of the feed structure parallel to the longitudinal axes of the machine and in a symmetrical position with respect to the latter on the opposite sides of a transverse horizontal axis. At least one pair of cylinders are fixed to the guides and having their rods of their pistons connected to a cross-member travelling via wheels on the guides. The top end of the presser rod is hinged to the cross member. The rod also slides while being guided by a sealing group integral in the axial direction with the cover of the feed hopper and movable with respect to the latter in a horizontal plane so as to allow the oscillating movement of the rod with respect to the longitudinal axis of the machine.

Abstract: A method for rapidly cooling a product rolled in a rolling mill, for example wire rod fed along a roller conveyor, consists of blasting said product with an air stream in which atomized water is dispersed.