Hollow cast iron tubular product and vertical continuous casting method and special equipment thereof

Abstract

Provided are a hollow cast iron tubular product and a vertical continuous casting method and special equipment thereof. An L-shaped continuous casting holding furnace, a rotating magnetic field generator and a crystallizer are connected in series to form a U-shaped channel for molten iron to flow. The rotating magnetic field generator is utilized for enabling the molten iron to rotate in the crystallizer. The produced hollow cast iron tubular product is smooth in appearance. The wall surface of the inner hole is free of hoop rings and is smooth, the internal texture is fine, the size accuracy is greatly improved, the radial growth of a primary dendritic crystal is disturbed, the proportion of an isometric crystal area is increased, the mechanical property of a hollow cast tube is improved, and the practical value is high.

Description

technical field

[0001] The invention belongs to the technical field of thermal processing of metal materials, and in particular relates to a hollow cast iron pipe, its vertical continuous casting method and special equipment. Background technique

[0002] Up to now, the relevant patented technologies for drawing cast iron hollow cast pipes have been disclosed, and their technical features are divided into two categories: the first category is the horizontal continuous casting scheme: one is the device and its production process for producing cast iron pipes by horizontal continuous casting method, publication number : CN1410188; the second is hollow cast iron profiles and horizontal continuous casting device, publication number: CN2589125; the third is a continuous casting production device for hollow cast iron profiles, publication number: CN102228963A. The common feature of the above technical solutions is that on the basis of horizontal continuous casting, an inner core m...

Images