Showing papers on "Hydroforming published in 1969"

Method and assembly for the production by hydroforming of parts of large size, especially in length

Abstract: A method of forming blanks of stamped metal sheets, into a finished part by a combination of mechanical and hydraulic actions. The hydraulic action is strictly connected in synchronism and magnitude, according to a univocal relationship, with the mechanical action. This univocal relationship is defined by the variation of the internal volume of the part as a function of its shortening, enabling the surface of the part to be maintained constant from the blank up to the finished part. An assembly for performing this method with any press of normal power is actuated by the press by a double-acting oleohydraulic transmission having a master cylinder and regulator. The assembly includes a frame of parallel plate and U-shaped binders for clamping the opening parts of the mold. Actuation of the assembly can be electrical, hydraulic or mechanical. The regulator is a rotary cam upon which the univocal relationship is registered and which is calibrated. The cam is phase-locked by levers, cogs or a hydraulic multiplier to the shortening jack, Several concentric jacks interconnected by cushions of oil constitute the bending ram for multidiameter shapes.

Process for catalytic reforming with high propane yield

Abstract: An improved hydroforming process wherein the n-paraffins in the hydroformer feed are converted to normally gaseous hydrocarbons, particularly propane. The improvement is accomplished by placing a selective hydrocracking catalyst comprising hydrogen-erionite in the bottom of the lead reactor of a multiple-stage, fixed-bed hydroforming process. The normally gaseous hydrocarbons are separated from the lead reactor effluent. The propane yield can be maximized, and the octane rating of the hydroformer product is improved.