摘要:
According to one embodiment, a method for fabricating a 3D model of different materials includes positioning a moveable deposition electrode at a distance from a photoconductive electrode, directing light onto the photoconductive electrode in a first pattern while simultaneously applying a voltage differential across the electrodes. Particles from a solution are deposited to form a first layer on the deposition electrode according to the first pattern. The method repeats, for a given number N of layers of the 3D model, the following operations N-1 times: changing or maintaining a composition of the solution, moving the moveable deposition electrode in a z direction in steps about equal to a thickness of each deposited layer, directing light onto the photoconductive electrode in another pattern while simultaneously applying another voltage differential across the electrodes. Particles from the solution are deposited to form another layer above the deposition electrode according to another pattern.
摘要:
A cleaning apparatus for a magnet filter and a method of cleaning a magnetic filter. The magnetic filter is disposed in a circular passage for processing a cleaning fluid. The cleaning apparatus includes sensors for determining when the magnetic filter should be cleaned, which prevents a loss of effectiveness of the cleaning fluid due to detached metal powder falling off of the filter.
摘要:
A process of controlling an ionic electrodeposition coating system is provided for a applying coating solution, which contains a solubilizer and ionic coating particles, to an object. A first flushable, tubular electrode is placed into the tank that is electrically charged and that is accessible by the solution through a correspondingly charged membrane. A second flushable, tubular electrode is also placed into the tank that is electrically charged corresponding to the first electrode and that is accessible by the solution through an oppositely charged membrane. The object to be coated is then supplied with an electrical charge, and the electrodes are supplied with an opposite electrical charge. The application of electrical current causes a portion of the ionic coating particles to be attracted to and deposited upon the object, and also causes a release of excess cations and anions. The ions that have a charge corresponding to the charge of the object are removed at the first electrode by allowing the ions to pass through its charged membrane. Further, the ions that have a charge opposite to the charge of the object are surprisingly attracted to the like-charged second electrode and are removed at the second electrode by allowing the ions to pass through its charged membrane. The excess cations and anions are then removed from the system by circulating an electrolyte solution through the flushable electrodes.
摘要:
Acid is removed from cathodic electrocoating baths by a process in which electroconductive sub-strates are coated with cationic resins present in the form of aqueous dispersions, at least a portion of the coating bath being subjected to an ultrafiltration where the ultrafiltration membrane retains the cationic resin to form an ultrafiltrate which contains water, solvent, low molecular weight substances and ions and at least a portion of the ultrafiltrate is recycled into the coating bath, and at least a portion of the ultrafiltrate is subjected to a special electrodialysis treatment before being returned into the electrocoating bath.
摘要:
This invention provides a means of controlling the composition of electrodepositable photoresists emulsion. The system removes contaminants from the bath which may adversely effect the quality of the deposited coatings and allows for continuous monitoring of the conductivity of the system.
摘要:
An acidic silica sol and coagulating polymer are used to reduce the tackiness of paint solids of electrodeposition paints and to condition such solids so that they can be separated and removed from the drippings and wash water obtained as a result of the application of electrodeposition paints to various types of products.
摘要:
Monomer, prepolymer, or oligomer feed that is polymerizable into a fluent polymer is dispersed with electrolyte in an autoionizable liquid bath, such as an aqueous bath, and percolated through a porous, charged d.c. electrode for promoting its polymerization into synthetic resin.
摘要:
The conformation of the apparatus is broadly that of a shell-and-tube heat exchanger that can be of the single pass or multipass variety, and it can have substantially straight or bent tubes, including tubes with return bends. However, in this apparatus tubes are electrodes, and they are microporous. Electrode means of polarity opposite the tubes are provided; e.g., in the form of one or more charged heads or elements between such head or heads and the tube ends proximate thereto. Preferably the counter electrodes actually extend into the tubes. Appropriate fluid inlets and outlets and electrical terminals are provided.
摘要:
THIS INVENTION RELATES TO THE USE OF A SELECTIVE FILTRATION TECHNIQUE SUCH AS ULTRAFILTRATION TO CONTROL THE COMPOSITION OF AN ELECTRODEPOSITION BATH COMPRISING A SOLUBILIZED SYNTHETIC ORGANIC VEHICLE RESIN.
摘要:
This invention relates to a method of rinsing articles coated by electrodeposition process which comprises using as the rinsing agent the effluent obtained from a selective separation process such as a filtration process, for example, ultrafiltration, utilized to control electrodeposition bath composition.