Machining method of Y-shaped pipe with lug boss

Abstract

The invention provides a machining method of a Y-shaped pipe with a lug boss. The machining method comprises the following steps: arranging a flat storage cabin on an opposite side of the lug boss of a mold, and communicating the storage cabin with an inner cavity of the mold, wherein the thickness of the storage cabin is smaller than that of a pipe fitting; arranging a pipe blank into the mold, and sealing two ends of the pipe blank by utilizing hard end enclosures after closing the mold; injecting high pressure liquid into the pipe blank, then pressurizing, and enabling the pipe blank to be attached to the inner cavity of the mold; pushing inwards the hard end enclosures on the two ends so as to compensate the material, enabling the material on one side of the lug boss to enter the lug boss, and enabling the material on the opposite side of the lug boss into the storage cabin; discharging the high pressure liquid after the thickness of the pipe fitting on the lug boss is identical to that of other parts of the pipe fitting, and taking out the Y-shaped pipe; cutting off surplus material formed on the opposite side of the lug boss due to the storage cabin and grinding, so as to complete the machining of the Y-shaped pipe with the lug boss. By adopting the method, the thickness of the wall of the entire Y-shaped pipe is uniform, and the qualification rate is high.

Description

technical field [0001] The invention relates to a processing method for a pipe, in particular to a processing method for a Y-shaped pipe with a boss. Background technique [0002] The Y-shaped tube with a boss can expose another hole after cutting the boss in practical applications, thus forming a Y-shaped tube with three nozzles. Generally, this Y-shaped tube with a boss is processed When using the internal high pressure process, the pipe fittings to be processed are put into the mold, and then high-pressure liquid is injected into the pipe fittings, and the pipe fittings are extruded into a shape with a boss by high pressure. Although this processing method can process Y-shaped pipes with bosses, it still has the following disadvantages. Since the material required for the bosses of the pipe fittings is obviously larger than that of other parts of the pipe fittings, if the material is not replenished here, then The thickness of the pipe fitting at the boss will be signifi...

AI Technical Summary

Problems solved by technology

Although this processing method can process Y-shaped pipes with bosses, it still has the following disadvantages. Since the material required for the bosses of the pipe fittings is obviously larger than that of other parts of the pipe fittings, if the material is not replenished here, then The thickness of the pipe fitting at the boss will be significantly thinner, or even have defects, resulting in a serious reduction in the wall thickness of the other nozzle after processing

[0003] At present, in order to solve this problem, the push heads on both sides are generally used to push inward and extrude the product for feeding. However, this kind of Y-shaped tube with only one boss is asymmetrical. When feeding, it is located on the convex The material on one side of the platform flows to the boss, and the material on the opposite side of the boss will accumulate due to insufficient flow, and even cause wrinkles due to the compression of the material, and the pass rate is low

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