Seamless steel pipe cold diameter expanding equipment and process

Abstract

The invention provides seamless steel pipe cold diameter expanding equipment and process, and belongs to the technical field of steel pipe diameter expansion. The seamless steel pipe cold diameter expanding equipment includes a worktable, a first hydraulic cylinder is fixedly installed on the upper surface of the worktable, a first installation plate is fixedly installed at the output end of the first hydraulic cylinder, and a threaded rod is fixedly installed on the side, far away from the output end of the first hydraulic cylinder, of the first installation plate; a pipe expanding die is connected to the end, far away from the first installation plate, of the threaded rod in a threaded mode, and a diameter variable head is fixedly connected to the end, far away from the threaded rod, ofthe pipe expanding die; and a fixing frame is fixedly installed on the upper surface of the worktable and on the side, away from the first hydraulic cylinder, of the work table. Compared with existinglarge-scale equipment, the seamless steel pipe cold diameter expanding equipment is simple in structure, low in equipment cost, and suitable for various small and medium-sized enterprises, the enterprises can carry out large-scale operation conveniently, the equipment is convenient in use process, workers can carry out operation simply, and much more labor is not needed.

Description

technical field [0001] The invention relates to the technical field of diameter expansion of steel pipes, in particular to a cold expansion equipment and technology for seamless steel pipes. Background technique [0002] Steel pipes are divided into seamless steel pipes and welded steel pipes. The production process of seamless steel pipes is to pierce solid billets or steel ingots into hollow capillaries, and then roll them into steel pipes of the required size. The methods of piercing and rolling are different. It constitutes different methods of producing seamless steel pipes. The production process of welded steel pipes is to bend the tube blank (steel plate or strip steel) into a tubular shape, and then weld the gaps to become steel pipes. [0003] Seamless steel pipe is a long strip of steel with a hollow section and no seams around it. The seamless steel pipe has a hollow section and can be used as a pipeline for transporting fluids, such as pipelines for transporting...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a seamless steel pipe cold expansion equipment and its process, which solves the problem that some existing seamless steel pipe cold expansion equipment have complex structures and high equipment costs, and cannot be applied to various For small and medium-sized enterprises, at the same time, the simple seamless steel pipe cold expansion equipment in the existing technology is less stable, and the effect of seamless steel pipe expansion is not ideal

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