Bimetal composite pipe spinning device and spinning pipe expanding method thereof

Abstract

The invention discloses a bimetal composite pipe spinning device. The spinning device comprises a pipeline fixing frame, a rotary connecting rod, a spinning head, a rotary driving device and a linear driving device; the spinning head comprises an inner frustum, a retainer ring, rolling columns, an end cover, a backing ring assembly and an adjustable blocking disc assembly; the inner frustum is fixedly connected to the end of the rotary connecting rod; a plurality of rolling columns are circumferentially and uniformly distributed and arranged in mounting holes of the retainer ring, the retainer ring is arranged on the conical surface of the inner frustum in a sleeving manner, and the rolling columns conduct spinning on the inner wall of a lining pipe of a bimetal composite pipe; the front end face of the retainer ring abuts against the inner end face of the backing ring assembly, and the end cover is in press connection with the outer end face of the backing ring assembly; and the rear end face of the retainer ring abuts against the front end face of the adjustable blocking disc assembly. The invention further discloses a spinning pipe expanding method of the spinning device. According to the bimetal composite pipe spinning device and the spinning pipe expanding method thereof, the expanding size can be conveniently adjusted within a certain size range, and the control precision of the spinning inner diameter is improved.

Description

technical field [0001] The invention relates to the technical field of bimetal composite pipe processing, in particular to a bimetal composite pipe spinning device and a spinning expansion method thereof. Background technique [0002] Bimetallic composite pipes have high carbon content, impact resistance, low thermal expansion rate, pressure resistance, high temperature resistance, mature installation, and complete specifications; bimetallic composite pipes produced by many manufacturers have been widely used in oil fields, chemicals, electric power and other industrial fields , its scope of application is becoming wider and wider, and the economic, environmental and social benefits it brings are more obvious. The basic principle of bimetal composite steel pipe: the outer base pipe is responsible for pressure bearing and rigid support of the pipe, and the inner liner pipe is responsible for corrosion resistance. The outer base pipe can choose carbon steel pipes with differe...

AI Technical Summary

Problems solved by technology

However, the expansion size of the spinning head to the pipe diameter is fixed or difficult to adjust, which cannot meet the control requirements of the spinning inner diameter of bimetallic composite pipes with different specifications.

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