摘要:
Method for manufacturing a heat exchanger, wherein two neighboring metal tubes (1) are joined to one another in the overlap areas at their open ends by a U-shaped end tube (3), using an adhesive (5), wherein a) the adhesive is applied to the overlap areas of the U-shaped end tube, and wherein the adhesive is selected so that after being applied to the overlap areas of the U-shaped end tube and before being bonded to the metal tubes, the adhesive is solid and not tacky at temperatures below 30° C. and does not cure without an activation step, b) the end tube with the overlap area and the adhesive applied thereto is attached to the metal tubes or inserted into the metal tubes, and c) the adhesive is activated thermally or by bombardment with high-energy radiation either before or after step b), so that it cures after step b) and bonds the metal tube to the U-shaped end tube in the overlap area.
摘要:
The invention relates to a method for connecting a first tube to a second tube, the tubes being interconnected in an overlapping region by means of an adhesive that fills a gap in the overlapping region between the tubes. Said method is characterized in that: a) adhesive is applied to the overlapping region of at least one of the tubes and the adhesive is selected in such a way that it is solid at temperatures of below 30° C. after application to the overlapping region and prior to the connection of the tubes, and cannot be cured without thermal activation; b) the tube having the adhesive in the overlapping region is pushed onto or inside the other tube; c) the tubes are fixed in relation to one another in the overlapping region by a heatable clamp, said clamp being designed in such a way that it can heat the tubes in said region; d) the adhesive is thermally activated by heating the overlapping region with the aid of the heatable clamp, whereby the adhesive cures and connects the two tubes in the overlapping region; and e) the heatable clamp is removed once the adhesive has cured. The invention also relates to a method for producing a refrigerator and to a refrigerator comprising correspondingly joined tube sections.
摘要:
The invention relates to a method for connecting a first tube to a second tube, the tubes being interconnected in an overlapping region by means of an adhesive that fills a gap in the overlapping region between the tubes. Said method is characterized in that: a) adhesive is applied to the overlapping region of at least one of the tubes and the adhesive is selected in such a way that it is solid at temperatures of below 30° C. after application to the overlapping region and prior to the connection of the tubes, and cannot be cured without thermal activation; b) the tube having the adhesive in the overlapping region is pushed onto or inside the other tube; c) the tubes are fixed in relation to one another in the overlapping region by a heatable clamp, said clamp being designed in such a way that it can heat the tubes in said region; d) the adhesive is thermally activated by heating the overlapping region with the aid of the heatable clamp, whereby the adhesive cures and connects the two tubes in the overlapping region; and e) the heatable clamp is removed once the adhesive has cured. The invention also relates to a method for producing a refrigerator and to a refrigerator comprising correspondingly joined tube sections.
摘要:
A device for applying a cosmetic product, such as a make-up product (blush or “fard”, face powder, corrector, base make-up, eye-shadow, etc.) is defined by a cap housing a solid mass of cosmetic product having a contact surface, and by a brush housed removably inside the cap and movable inside the cap to cooperate with the contact surface; the cosmetic product is defined by a particle aggregate having a composition including a lipid phase and a powder phase, and the lipid phase ranges in quantity between no less than approximately 10% and no more than approximately 80% by weight.
摘要:
A kit is described for the application of mascara comprising a bottle containing mascara, an applicator pad with bristles, a rod for supporting the pad and a cleaning and dosing scraper for the pad. The applicator pad is angled with respect to the rod.
摘要:
A system for performing dimension checkings of mechanical pieces includes a contact detecting probe (4) with wireless transmission, for example by means of a single radiofrequency two-way communication link (14), with respect to a base station (10) connected to an interface unit (11). The probe includes a logic unit (36) and a memory unit (38) in which there reside the values of some operation parameters, for example the transmission frequency and/or the activation mode of the probe. The values of the operation parameters can be modified in a programming phase, according to a method that foresees the wireless transmission of control signals from a manually operated control device-carried out, for example, in the interface unit-to the probe, for giving the updating of the values among the selectable values of a sequence residing in the probe, and the acquisition of the current value. The generation of the former control signals is activated by manually operating keys of the interface unit on the basis of information-regarding the parameter under consideration and its associated current value-observable on a display, for example in the interface unit, information visualized on the basis of signals transmitted from the probe.
摘要:
A system for numerical control machine tools comprises contact detecting probes, powered by a battery, that transmit radio-frequency signals to associated interfaces. When the probes are not being utilized for checking cycles, they are in a low-energy consumption state, in other words the circuits of the probes are only partially powered. When the need arises, the circuits of a probe are fully powered by the battery, by a radio-frequency activation signal. The procedure for activating a selected probe includes the sending of a generic activation signal from the associated interface, the transmitting of an identification signal from all the probes that have been activated by the generic signal and the sending of a generic confirmation signal from the interface in reply to the identification signal of the selected probe.
摘要:
The present invention is directed to compositions (“Nanomaterial Polymer Compositions”) comprising a silicone polymer and a nanomaterial, including but not limited to, a single or multi-walled nanotube, a nanowire, a nanodot, a quantum dot, a nanorod, a nanocrystal, a nanotetrapod, a nanotripod, a nanobipod, a nanoparticle, a nanosaw, a nanospring, a nanoribbon, a branched nanomaterial, or any combination thereof. The Nanomaterial Polymer Compositions are useful for optical and sensing devices including but not limited to noise suppression, passive Q-switching, mode-locking, waveform shaping, optical switching, optical signal regeneration, phase conjugation or filter devices, dispersion compensation, wavelength conversion, a soliton stabilization, microcavity applications, interferometers; optical, magneto-optical or electro-optical modulation; and biochemical sensors and photodetectors. The Nanomaterial Polymer Compositions are also useful in soft lithography processes.
摘要:
A system and a method for the transmission of signals representative of an event include a first low frequency clock and a low frequency counter for generating a first delay, and a second high frequency clock and a high frequency counter for generating a second delay. The system further includes a transmitter for transmitting the representative signals after a delay from the event made up by the sum of the first and the second delay. The second delay can be generated also by an analog device including for example a capacitor, and devices for charging the capacitor up to the reaching of a preset voltage at its ends. A wireless transmission system according to the invention is utilized in a checking system with a contact detecting probe, for transmitting a signal representative of contact with the piece to be checked.
摘要:
The present invention provides compositions (“Optical Nanomaterial Compositions”) comprising one or more nanomaterials and an optical coupling gel or an optical adhesive. The invention also provides methods for using the Optical Nanomaterial Compositions as an index-matching gel, an optical adhesive or an optical film, all of which are suitable for optical and sensing devices applications, including but not limited to noise suppression, passive Q-switching, mode-locking, waveform shaping, optical switching, optical signal regeneration, phase conjugation, in filter devices, dispersion compensation, wavelength conversion, soliton stabilization, microcavity applications, in interferometers (such as the Gires-Tournois interferometer), optical, magneto-optical or electro-optical modulation, biochemical sensors and photodetectors.