Manufacturing technology for toriconical head

Abstract

The invention discloses a manufacturing technology for a toriconical head. The manufacturing technology comprises (a.) a step of refining a material, namely a step of selecting a 6061 aluminium ingot, smelting the aluminium ingot in an electric furnace, forging into negative and positive electrode bars, electrifying the negative and positive electrode bars to perform self-consumption to form a crystalline state, exhausting gas in the furnace to prepare a refined aluminium ingot; (b.) a step of forging and moulding, namely, a step of subjecting the refined aluminium ingot having a piece weight of 1.5 tons to three upsetting and three drawing in a forging moulding machine having a weight of over 2000 tons, and forging a plate-type forging having a thickness needed and with a forging ratio not less than 6; (c.) a step of lofting and blanking the plate-type forging, smoothing the plate-type forging surface on a lathe, rolling a cone, flanging, rounding big rounded corners and forming straight edges, necking down and flatting the ring bottom of the small end, and moulding and closing the sides of the small end to form the toriconical head; and (d.) a step of performing thermal treatment, namely, a step of subjecting the toriconical head to solid solution treatment and aging thermal treatment. The manufacturing technology is advantageous in that: the toriconical head manufactured by the manufacturing technology is light in weight and long in service lifetime, and saves materials.

Description

technical field [0001] The invention relates to a manufacturing process of a conical sealing head with folded edges. Background technique [0002] Such as figure 1 As shown, the folded conical head is widely used in the bottom cover of many chemical equipment (such as evaporators, spray dryers, crystallizers and settlers, etc.), and its advantage is that it is convenient to collect and unload solid materials in these equipment . In addition, the upper and lower parts of some tower equipment have different diameters, and the conical shell is often used to connect the two towers with different diameters. At this time, the conical shell of the head is called the variable diameter section. For corrosive pipelines, aluminum alloy, titanium alloy, and stainless steel are also used to make conical heads. When the pipe is subjected to a certain high pressure, the tapered head with variable diameter needs to be forged as a whole to change the mechanical properties of the head. . ...

AI Technical Summary

Problems solved by technology

Since cast aluminum was used in the past, under the requirements of the existing technology and materials, only three sections (hypotenuse section, arc section and straight line section) can only be formed and then welded, resulting in a hemmed conical head Heavy weight, poor mechanical properties, many processing steps, complicated process

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