A Composite Forming Process for Large Titanium Heads

Abstract

The invention discloses a composite molding process of a large-size titanium-made end socket. The composite molding process comprises the following steps of: 1, molding a bulge part of the end socket by machining in a multimode and multi-pass hot stamping manner, to be specific, carrying out hot stamping on a machined blank arranged in a stamping die for a plurality of times to obtain a semifinished product of the end socket by adopting a punching machine from front to rear according to a predesigned structure and size of the bulge part of the large-size titanium-made end socket; 2, carrying out side shearing, to be specific, carrying out side shearing on the semifinished product of the end socket; and 3, molding a straight side part and a corner transition part of the end socket by cold spinning , to be specific, carrying out cold spinning on an upper port of the semifinished product of the end socket which is subjected to side shearing in the step 2 to obtain a molded end socket finished-product by adopting spinning equipment according to predesigned structures and sizes of the straight side part and the corner transition part of the large-size titanium-made end socket. The composite molding process disclosed by the invention is simple in steps, reasonable in design, simple and convenient to operate and good in using effect; and both the mechanical property and the chemical components of the molded end socket can meet relative standard requirements.

Description

technical field [0001] The invention belongs to the technical field of head manufacturing, in particular to a composite molding process for a large titanium head. Background technique [0002] The head is the pressure-bearing part of the pressure vessel. According to the different geometric shapes, it can be divided into spherical, oval, dish, spherical cap, conical shell and flat cover, among which spherical, oval, dish and spherical cap Type heads are also collectively referred to as convex heads. For the convex head (except the spherical cap type head), the middle part is a convex part that protrudes outward, and the open end of the convex part is provided with a circle of straight edges (that is, a straight edge part), and the protruding part is There is a corner transition between the part and the straight edge part. The convex parts of spherical, elliptical, dish-shaped and spherical-cap heads are hemispherical, elliptical, dish-shaped and spherical-cap, respectively...

AI Technical Summary

Problems solved by technology

Compared with the stamping forming process, there are more degrees of freedom in the spinning forming operation process. Due to different types of equipment, different operators and different operating methods, it will lead to more significant thinning phenomenon, and there are greater differences and instability. , so the spin forming method is not suitable for thick-walled or large-pressed heads

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