Preparation process of high-temperature bubble-reducing double-rib double-color reinforced spiral corrugated pipe

Abstract

The invention discloses a preparation process of a high-temperature bubble-reducing double-rib double-color reinforced spiral corrugated pipe, and belongs to the field of corrugated pipes. According to the scheme, a push plate stably extrudes raw materials to the position between an upper extrusion plate and a lower extrusion plate through limiting between a limiting block and a sliding rod, so that the raw materials are formed into the corrugated pipe between the upper extrusion plate and the lower extrusion plate, when raw materials are extruded to the position between the upper extrusion plate and the lower extrusion plate, a heat conduction pipe is inserted into a groove, liquid carbon dioxide is released into a main annular groove, heat is transmitted into the main annular groove through an arc-shaped plate, the corrugated pipe between the upper extrusion plate and the lower extrusion plate is cooled through the liquid carbon dioxide, the shaping efficiency is improved, the liquid carbon dioxide permeates into the inner walls of the upper extrusion plate and the lower extrusion plate through the arc-shaped plate, so that a solid-liquid semi-permeable film is separated from the inner walls of the upper extrusion plate and the lower extrusion plate, and damage to the corrugated pipe due to the fact that the corrugated pipe adheres to the inner walls of the upper extrusion plate and the lower extrusion plate is effectively reduced.

Description

technical field [0001] The invention relates to the field of corrugated pipes, more specifically, to a preparation process of a double-ribbed and double-color reinforced spiral corrugated pipe with high temperature and foam reduction. Background technique [0002] Bellows refers to a tubular elastic sensitive element connected by foldable corrugated sheets along the direction of folding and expansion. Bellows are widely used in instruments and meters. The main purpose is as a measuring element of a pressure measuring instrument to convert pressure into displacement or force. The tube wall is thinner, the sensitivity is higher, and the measuring range is tens of Pa to tens of MPa. Its open end is fixed, and the sealing end is in a free state, and the auxiliary coil spring or reed is used to increase the elasticity. Under the action of pressure, it elongates along the length of the pipe, so that the movable end produces a displacement that has a certain relationship with the p...

AI Technical Summary

Problems solved by technology

[0004] The general bellows production process is not easy to meet the standard, and in the extrusion molding process, most of them are extruded by a shaping die, the defective rate of the formed bellows surface defects is high, and the tolerance accuracy of the finished product is difficult to meet the standard

Images