Composite ejector ball for sizing of seamless steel pipe

Abstract

The invention discloses a composite ejector ball for sizing of a seamless steel pipe. The composite ejector ball for sizing of the seamless steel pipe comprises a frame, wherein the top side wall of acavity inside the frame is fixedly connected with a first inner plate; the bottom side wall of a first top ball body is attached with a first compression roller; the bottom side wall of the first compression roller is attached with a steel pipe; the outer side wall of a first rotating rod is symmetrically sleeved with first sleeve blocks; the top side wall of each sleeve block is fixedly connected with a first branch rod; the top side wall of each first branch rod is fixedly connected with the side wall of the bottom portion of the first inner plate; the outer sidewall of a first groove blockis fixedly connected with first sliding blocks symmetrically; the outside walls of the two first sliding blocks are in clearance fit with the first branch rods; the right side wall of the first rotating rod is fixedly connected with a driven gear; the wall of the bottom of the driven gear is engaged with a driving gear; and the right sidewall of the driving gear is fixedly connected with a motormain body. According to the composite ejector ball for sizing of the seamless steel pipe, the first compression roller and the first groove blocks are arranged to support the first compression roller,so that when in sizing, influence of offset of the first compression roller on the effect of sizing is avoided.

Description

technical field [0001] The invention relates to the field of manufacturing seamless steel pipes, in particular to a composite header used for sizing seamless steel pipes. Background technique [0002] The deformation of the sizing is small, and the springback of the steel pipe after rolling is relatively large. Compared with the reducing process with a large reduction, the flow and stress distribution of the metal in the steel pipe have a large impact on parameters such as roll shape and reduction. The changes are more sensitive, which makes it more difficult to calculate the rolling pressure and reduction amount with the classical analytical method. When sizing, a sizing device is required to work, but when sizing, it is easy to appear internal pressure rollers. Offset affects the sizing effect, so we propose a composite header for seamless steel pipe sizing. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the object of the present inventi...

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Problems solved by technology

[0002] The deformation of the sizing is small, and the springback of the steel pipe after rolling is relatively large. Compared with the reducing process with a large reduction, the flow and stress distribution of the metal in the steel pipe have a great influence on parameters such as roll shape and reduction. The changes are more sensitive, which makes it more difficult to calculate the rolling pressure and reduction amount with the classical analytical method. When sizing, a sizing device is required to work, but when sizing, it is easy to appear internal pressure rollers Offset, affecting the sizing effect, so we propose a composite header for seamless steel pipe sizing

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