摘要:
The invention relates to a mold (200) comprising a self-contained heating device, said mold including: a) a mold body (210, 220) comprising an induction heating circuit, referred to as an equipment circuit, having a resistance R1 and an inductance L1, said equipment circuit including an inductor (215, 225) extending inside a closed cavity of the mold body; b) connection means (250) for connecting the equipment circuit to a high-frequency current generator; and c) characterized in that it includes a so-called adjustment coil placed between the equipment circuit and the connection means (250), said coil having a resistance R2 and an inductance L2 that does not induce current in the mold body and being connected to the equipment circuit.
摘要:
The invention concerns a device for transforming materials, in particular composites, comprising: two mutually mobile mold casings (10, 20), electrically conductive and including a molding zone (12, 22) designed to be in contact with the material to be transformed, and inductive means (30) for generating a magnetic field, the surfaces of one of the mold casings (10, 30) located opposite the inductive means, except the molding zones (12, 22), being coated with a shielding coat (14, 24) of non-magnetic material preventing the magnetic field from penetrating into the mold casings (10, 20), the mold casings being electrically insulated relative to each other so that their opposite surfaces delimit an air gap wherein flows the magnetic field inducing currents at the surface of the molding zones (12, 22), thereby localizing the heating at the molding zone/material interface.
摘要:
The invention relates to a heater (10) for converting a material (44), comprising a lower mould body (12), or die, made of an electrically conducting material and having a moulding zone (14) intended to be brought into contact with the material to be converted; an upper body (20) having no moulding zone, made of an electrically conductive material; inductor means (30) for generating a magnetic field surrounding the die (12) and the upper body (20); the die (12) and the body (20) being electrically insulated from each other during the induction heating phase, so that the opposing faces of these two bodies define a gap (40) in which the magnetic field circulates, said field inducing currents in the surface of the moulding zone (14) of the die (12), thus making it possible to localize the action of the inductors at the moulding zone/material to be converted interface; and deformable compression means (42, 46) placed between the die (12) and the upper body (20), which are capable of exerting uniform pressure on the material to be converted.
摘要:
The invention relates to a method and a device (350) which are used to heat materials (314) in order to produce objects industrially, e.g. mass production, and which allow a large variety of transformation methods.
摘要:
The invention relates to a method for producing a pipe or tube (10) for fluid flow, in particular a hose tube which comprises sections provided with rings (12, 14, 16) and whose remaining section is devoid thereof. The inventive method consists in using a smooth devoid of rings tube at an ambient temperature, in inserting said tube, also at the ambient temperature, in a mould (20), which comprises shaping surfaces (24) and is provided with inductor means for heating said shaping surfaces, in heating the shaping surfaces (24) to a temperature required for softening the tube areas adjacent to the mould heating surfaces, in blowing a pressurised fluid, such as air, into the tube for applying the soften surfaces to the shaping surfaces (24) in such a way that the rings are formed and in cooling the tube in the ring areas.
摘要:
Enveloppe sécurisée constitué d'une coque (1) formée par une paroi (2) constituée par un matériau composite stratifié, caractérisée en ce que la paroi (2) comprend au moins trois couches (3, 4, 5), à savoir deux couches conductrices (3, 5) constituées par un matériau électriquement conducteur prenant en sandwich une couche intermédiaire isolante (4) constituée d'un matériau électriquement isolant.
摘要:
The invention concerns a mould for transforming plastic and/or composite materials such as thermoplastic and thermosetting polymers and vulcanisable compounds comprising a mould body (3, 3a, 3b) provided with an impression (4, 4a, 4b). The invention is characterised in that it comprises heating means which directly heat the material to be transformed or an intermediate surface impression adjacent to the material without using heat conductivity of the mould body (3a, 3b) and/or of the impression (4, 4a, 4b) to heat the material to be transformed.