Class / Patent application number | Description | Number of patent applications / Date published |
164710100 | With vibratory treatment of casting material | 7 |
20090025900 | METHOD AND APPARATUS FOR CASTING - A method and apparatus for casting wherein molten metal is treated to create conditions of whole volume solidification in the mold. The treating of the molten metal can include the application of vibration in specified manner under specific frequency and amplitude for causing multiple sites of crystallization throughout the mold, or the treating can be by use of activators which are formed during casting, either directly from the molten metal stream by dispersion or from a mineral which concurrently with casting is milled, to a finely ground powder, dehydrated and fed into the molten metal throughout the metal to speed solidification and crystallization at multiple sites. Solidification speed can be more than doubled while eliminating pouring defects and improving the cast metal structure. The methods are applicable to various methods of casting including continuous casting and the methods of vibrating and use of activators can be combined with improved results. | 01-29-2009 |
20110186260 | Thixotropic Injector with Improved Annular Trap - By blocking an angular extent of an annular skimming trap used for semi-solid injection, a notable reduction in lenticular defects and porosity are observed. The blocking can be performed by a ring having dimensions to completely occlude a prior art annular skimming trap throughout the angular extent, and providing complete and/or partial flow across the ring throughout the rest of the angular extent. Preferably an outlet to the ring trap includes a chamfered edge and/or a deflector for encouraging flow of the contaminated semi-solid material into the trap. | 08-04-2011 |
20120132387 | COMPOSITE METAL FOAM AND METHODS OF PREPARATION THEREOF - The present invention is directed to composite metal foams comprising hollow metallic spheres and a solid metal matrix. The composite metal foams show high strength, particularly in comparison to previous metal foams, while maintaining a favorable strength to density ratio. The composite metal foams can be prepared by various techniques, such as powder metallurgy and casting. | 05-31-2012 |
20130284392 | ALUMINUM ALLOY CASTING AND METHOD FOR PRODUCING THE SAME, AND APPARATUS FOR PRODUCING SLIDE MEMBER - There are provided an aluminum alloy casting free from crack-causing needle-shaped crystallized substances and an apparatus and a method for producing a slide member excellent in mechanical properties such as abrasion resistance. | 10-31-2013 |
20140027082 | Stress Free Steel and Rapid Production of Same - A method of producing steel with reduced internal stress concentrations is disclosed. In an embodiment, hot steel is shaped by a rolling mill. The resultant steel product is bundled as soon as practicable and the bundle is allowed to cool. Vibration energy is applied to the bundle of steel product so that internal stress concentrations within the steel product are relieved. In an embodiment, a plurality of bundles are stored on a rack and the rack is vibrated, the vibrations being transmitted to the plurality of bundles so that undesired internal stress concentrations within the steel products are relieved. Alternatively, magnetics may be used to relieve the undesired internal stress concentrations within the steel products. Thus, improved steel is produced as well as improved steel that can be produced more rapidly than known techniques. | 01-30-2014 |
20150343526 | APPLICATION OF ULTRASONIC VIBRATIONS TO MOLTEN LIQUIDMETAL DURING INJECTION MOLDING OR DIE CASTING OPERATIONS - Described herein is an injection molding or die casting machine having an ultrasonic vibration generator associated therewith that is configured to apply ultrasonic vibrations during melting and/or injection of the molten material (e.g., molten alloy). The ultrasonic vibrations may be applied to molten material via the plunger tip of the plunger in the machine, and/or the mold and/or the vessel, for example. The ultrasonic vibration may be applied during plunger tip movement so that the molten material vibrates ultrasonically during melting and injection. A connector may be connected to the ultrasonic vibration generator and the plunger. Channels may be provided in the plunger tip and/or vessel to accommodate a cooling fluid during melting and injection. | 12-03-2015 |
20160008882 | Method of Producing a Metal Foam by Oscillations | 01-14-2016 |