Thermal treatment and deformation prevention tool for thin-wall cylinder body casting and thermal treatment charging method thereof

Abstract

The invention relates to a thermal treatment and deformation prevention tool for a thin-wall cylinder body casting and a thermal treatment charging method thereof. The thermal treatment and deformation prevention tool for the thin-wall cylinder body casting comprises a plurality of supporting components arranged on the axial inner side of the cylinder body casting in a spacing manner, wherein the supporting components comprise arc-shaped supporting bodies for supporting the inner wall of a cylinder body; the radian of each arc-shaped supporting body is 60 to 90 degrees; the radius of the outer arc surface of each of the arc-shaped supporting bodies is the same as that of the arc surface of the inner wall of the cylinder body; a plurality of supporting rods are perpendicularly arranged on the arc-shaped inner sides of the arc-shaped supporting bodies; the lower ends of the supporting rods are fixedly supported on horizontally arranged supporting plates; the lengths of the supporting plates are less than the inner diameter of the cylinder body casting by 20 to 30 mm; the lower surfaces of the supporting plates and the flange end surfaces of the cylinder body casting to be supported are located on the same horizontal plane. The thermal treatment and deformation prevention tool disclosed by the invention can effectively prevent inwards sunken deformation of the cylinder body casting during high-temperature thermal treatment to prevent two flange ends of the cylinder body casting from being outwards opened.

Description

technical field [0001] The invention relates to the technical field of heat treatment process devices, in particular to a heat treatment anti-deformation tooling for thin-walled cylinder castings and a furnace charging method for heat treatment thereof. Background technique [0002] In the steam turbine system, the high-pressure outer cylinder or the medium-pressure outer cylinder is an important component of the steam turbine system. Under the existing technical conditions, the outer cylinder of the steam turbine is basically produced by casting, and can be divided into two categories: steel castings and iron castings according to the material. Since the cast iron material has good fluidity in a liquid state, the wall thickness of the outer cylinder of the cast iron part is relatively thin, and the wall thickness is generally less than 60mm, and no heat treatment is required. However, cast steel materials have poor fluidity in the liquid state, so the wall thickness of the...

AI Technical Summary

Problems solved by technology

[0003] The invention aims at the problem that the cylinder body is prone to concave deformation during the heat treatment process of large thin-walled cylinder castings in the prior art, and provides a heat treatment anti-deformation tooling for thin-walled cylinder castings to prevent deformation of the cylinder casting during heat treatment

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