Centrifugal casting composite pump pipe and machining process thereof

Abstract

The invention discloses a centrifugal casting composite pump pipe comprising an outer pipe and an inner pipe located in the outer pipe, the end portions of the outer pipe are connected with the end portions of the inner pipe through flanges, a filling layer is arranged between the outer pipe and the inner pipe, and the filling layer is filled with cement paste. The outer pipe is made of Q345B carbon alloy steel, and the inner pipe is made of Cr26 high-chromium cast iron. A wear-resistant coating is arranged on the inner wall of the inner pipe, and a machining process of the centrifugal casting composite pump pipe comprises the following steps that S1, the outer pipe and the inner pipe are cut off according to the designed length, then the inner pipe is pressed into the outer pipe through a horizontal press machine, and the filling layer is formed between the outer pipe and the inner pipe. The centrifugal casting inner pipe is pressed into the outer pipe through the horizontal press machine, then cement paste is injected into the double-layer pipe filling layer, the cement paste plays a role of a transition protection layer after being naturally solidified, the double-layer composite pipe achieves the super wear-resisting and impact-resisting effects of the inner pipe, and the service life is greatly prolonged compared with that of common carbon steel.

Description

technical field [0001] The invention relates to the technical field of pump tubes, in particular to a centrifugal casting composite pump tube and its processing technology. Background technique [0002] Concrete delivery pumps are often referred to as concrete pump pipes because concrete is referred to as concrete. It is easy to understand that the pump pipe is a new type of construction engineering accessory product that appeared simultaneously with the appearance of the concrete delivery pump. Its appearance has greatly improved the efficiency of construction construction. The operation mode of the bucket is changed to quickly transport the concrete to the place where it needs to be poured, which improves the construction efficiency by nearly a hundred times; the existing pump pipe is generally a single-layer tank, which has poor wear resistance and impact resistance, resulting in its Shorter lifespan. Contents of the invention [0003] The object of the present invent...

AI Technical Summary

Problems solved by technology

It is easy to understand that the pump pipe is a new type of construction engineering accessory product that appeared simultaneously with the appearance of the concrete delivery pump. Its appearance has greatly improved the efficiency of construction construction. The operation mode of the bucket is changed to quickly transport the concrete to the place where it needs to be poured, which improves the construction efficiency by nearly a hundred times; the existing pump pipe is generally a single-layer tank, which has poor wear resistance and impact resistance, resulting in its shorter lifespan

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