Class / Patent application number | Description | Number of patent applications / Date published |
072273000 | Ram or ram element | 9 |
20080209972 | RADIOACTIVE SUBSTANCE CONTAINER, MANUFACTURING APPARATUS THEREOF AND MANUFACTURING METHOD THEREOF - In the metal billet to be used for hot dilation forming, a forward side with respect to the pressing direction has a quadrate section and its diagonal length is not more than an inner diameter of a container. Moreover, a backward side with respect to the pressing direction has a circular section and its diameter is substantially same as the inner diameter of the container. The metal billet is heated to a temperature suitable for press working and is set into a container for press forming. While a center of a workpiece of the metal billet is being bored by a boring punch to be operated by a pressing machine, the metal billet is hot-dilated so that a bottomed container for a cask is formed. | 09-04-2008 |
20100024509 | STEM SLIDE DEVICE - A stem slide apparatus comprises a stem slide base ( | 02-04-2010 |
20130118221 | METHOD OF CONTROLLING HYDRAULIC SYSTEM AND HYDRAULIC SYSTEM - A method of controlling a hydraulic system, the hydraulic system including a ram cylinder unit having a cylinder and a ram, and a hydraulic pump and a reservoir used to supply hydraulic fluid to the cylinder, and hydraulically driving the ram using the hydraulic fluid so as to move against a specific load, the method includes determining what a present state is one of an initial state, a proportional steady state, and a later state, controlling the pumping rate, which is obtained by adding the flow rate corresponding to the volume loss due to the compression of the hydraulic fluid thereto, to control the ram in the initial state, and controlling the pumping rate, which is obtained by subtracting the flow rate corresponding to volume recovery of the hydraulic fluid due to the relief of compression of the hydraulic fluid therefrom, to control the ram in the later state. | 05-16-2013 |
20130192328 | EXTRUSION METHOD - An extrusion method capable of performing extrusion by means of an extrusion die that can improve oxidation resistance while maintaining the excellent performance of titanium sintered body is provided. The present invention is directed to an extrusion method in which an extrusion material F is extruded through an extrusion hole | 08-01-2013 |
20130247640 | EXTRUSION PLATE AND EXTRUSION APPARATUS - The invention relates to a dummy block ( | 09-26-2013 |
20130276501 | Apparatus for Deformation of Solid Sections - An equal channel angular extrusion tool comprising a punch assembly, a die set assembly, a base assembly, and a bottom slider assembly. The punch assembly comprises a punch, a punch nose, and a punch trolley. The die set assembly comprises an inlet channel and a removable core. The base assembly comprises a lifting mechanism which further comprises a die lift cylinder and a hold down ram. The bottom slider assembly comprises an ejection ram. The tool also includes a billet. The billet may be disposed in the bottom slider assembly. Severe plastic deformation is applied to the billet in the bottom slider assembly. | 10-24-2013 |
20140053623 | HOT EXTRUSION METHOD FOR PRODUCING A METAL PART, EXTRUSION TOOL FOR IMPLEMENTATION IT AND LANDING GEAR ROD THUS PRODUCED - A hot extrusion method for producing a metal piece comprising a tubular portion whereof one of the two ends is extended by a complex shape is provided. The method comprises: heating a billet from which the piece is made; and transferring the billet into a press extrusion tool, the tool including a cavity where the billet is placed and the shape of which substantially corresponds to the outer shape of the piece. The metal has, cold, a flow stress equal to or above 200 MPa. The complex shape and tubular portion are made by the following successive steps: at least one direct extrusion step using the first punch to produce the complex shape; a step for replacing the first punch with a second punch on the tool; at least one reverse extrusion step in the same tool to produce the tubular portion; and a step for evacuating the extruded piece. | 02-27-2014 |
20150290690 | EXTRUDER AND TUBE EXTRUDER OR METAL EXTRUSION PRESS - The invention relates to an extruder and tube extruder or metal extrusion press ( | 10-15-2015 |
20150336148 | DUMMY BLOCK FOR EXTRUSION PRESS - A dummy block for a metal extrusion press comprises a base having a first surface; an expandable collar seated against the base; a moveable plunger coupled to the base and accommodated by the collar, the plunger having a second surface configured to abut against the first surface of the base; and an outer connecting ring coupling the collar to the base. The connecting ring comprises at least one feature engaging the base and a plurality of fingers engaging the collar. | 11-26-2015 |