Molding die and molding process of thick-wall spherical seal head for hydrogenation reactor

Abstract

The invention relates to a molding die and an advanced molding and punching process method of a thick-wall spherical seal head product for a big hydrogenation reactor. The molding die comprises an upper die and a lower die, wherein the upper die is in a shape of a downwards convex spherical circular arc face; the lower die is in a shape of a downwards concave spherical circular arc face; and the upper die and the lower die have the same axle center and are placed in the same direction. The molding process method comprises the following steps that: the upper die is fixedly connected to a press machine; a supporting leg of the lower die is placed on a lower worktable of the press machine; the upper die and the lower die are aligned to have the same center when arranged; and a heated workpiece is punched into the thick-wall spherical seal head. By the molding process method, the surface quality of the spherical seal head is highly improved; a surface microcrack caused by uneven molding cannot be generated; the thickness of punched wall is uniform; and the outline dimension and the circular degree are better. By the process method, additionally feeding and discharging allowance is not required for the thick-wall spherical seal head product for the big hydrogenation reactor. The process method is simple in operation, high in molding reliability, good in outline dimension and short in process period.

Description

technical field [0001] The invention relates to an advanced forming tooling die, and to an advanced forming stamping process, in particular to a forming die for a thick-walled spherical head product for a large hydrogenation reactor and an advanced forming stamping process. Background technique [0002] Hydrogenation equipment needs to use large-scale pressure vessel equipment. This pressure vessel equipment is a closed pressure vessel formed by combining two spherical heads with a cylinder and welded by circular seams. Therefore, this thick-walled spherical head is a key component in the hydrogenation reactor equipment. [0003] As the volume of the pressure vessel equipment industry increases, the diameter of the spherical head increases accordingly, and the diameter of the blank used to process this spherical head becomes larger. It is currently known that the diameter of the blank head in production is about 7000mm. [0004] At present, the processing method of the sphe...

AI Technical Summary

Problems solved by technology

Using this method to produce thick-walled spherical parts, there are many shortcomings such as large machining allowance, heavy blank weight, high manufacturing cost, and poor product quality.

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