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Electroslag casting manufacturing method and device for special-shaped castings with three-dimensional changes

A technology of electroslag casting and manufacturing method, which is applied in the field of electroslag casting to produce special-shaped castings with three-dimensional changes, which can solve the problems of inability to cast complex special-shaped parts, achieve high resistance to crack formation and expansion, reduce pollution, and have high dimensional accuracy Effect

Active Publication Date: 2019-04-26
沈阳市盛华特种铸造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a method and device for electroslag casting manufacturing of special-shaped castings with three-dimensional changes, mainly to solve the problem that the electroslag casting process cannot melt and cast complex special-shaped parts, that is, the casting crystallizer does not have a common cavity casting for the movable supplementary electrode

Method used

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  • Electroslag casting manufacturing method and device for special-shaped castings with three-dimensional changes
  • Electroslag casting manufacturing method and device for special-shaped castings with three-dimensional changes
  • Electroslag casting manufacturing method and device for special-shaped castings with three-dimensional changes

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Embodiment 1

[0048] Such as figure 2 As shown, in this embodiment, the two-lobed crystallizer and the follow-up guide electrode are assembled according to the process requirements. The guide electrode 1 is a split assembly type, and only half of the guide electrode is shown in the guide electrode 1 diagram. The guiding electrode 1 is provided with two guiding channels 6 (the cross sections are respectively circular or rectangular), and two supplementary electrodes 2 (the cross sections are respectively circular or rectangular) are arranged in the guiding channels 6 corresponding to the cross section shapes , the two supplementary electrodes 2 continuously supplement the consumable electrodes in the casting process through the guide channel 6 respectively.

Embodiment 2

[0050] Such as image 3 As shown, in this embodiment, the electroslag casting of the blade blank of the Francis turbine generator uses 8 pipe-type guide electrodes 1 in the crystallizer cavity 3, and the supplementary electrode is a flexible cylinder, and the supplementary electrode passes through the pipe-type guide electrode. 1 inner guide channel 6 lead-in. Before the crystallizer assembly box, fix the guide electrode 1 at the designated position of the mold cavity 3, after the guide electrodes 1 are installed in place, their positions are fixed with each other, and the supplementary electrodes are continuously directed to the casting through the guide channel 6 in the guide electrode 1. process to replenish the consumable electrodes.

Embodiment 3

[0052] Such as Figure 4 As shown, in this embodiment, the electroslag casting manufacturing device includes: supplementary electrode 2, crystallizer cavity 3, fixed guide electrode 4, movable guide electrode 5, etc., and the crystallizer has an upper and lower two-layer structure, respectively responsible for blade flange section Forming and blade part forming. The crystallizer cavity 3 located on the upper layer has a circular cross section, in which a movable guiding electrode 5 is arranged, and a supplementary electrode 2 is arranged in the guiding channel inside the movable guiding electrode 5 . The crystallizer cavity 3 located in the lower layer has a strip-shaped cross-section, and a fixed guiding electrode 4 is arranged therein.

[0053] For the electroslag casting of the blade blank of the axial-flow hydroelectric generator, the fixed guide electrode 4 or the supplementary electrode 2 and the movable guide electrode 5 are respectively assembled in the mold cavity 3,...

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Abstract

The invention relates to the field of manufacturing three-dimensionally changed special-shaped castings through electroslag smelting casting, in particular to a method and device for manufacturing a three-dimensionally changed special-shaped casting through electroslag smelting casting. Electroslag smelting casting is used for completing secondary refining purification and casting near-net formingof consumable electrode materials. The method for manufacturing the three-dimensionally changed special-shaped casting through electroslag smelting casting comprises the specific processes that (1) acasting blank crystallizer adopts a combined structural form or a split type structural form; and (2) consumable electrodes in the smelting casting process are composed of two parts, namely the guiding electrode and the supplementary electrodes; the guiding electrode is followed and fixed relative to the crystallizer and internally provided with guiding channels; the supplementary electrodes aremovable and are arranged in the guiding channels; and the working form of the electrodes in the smelting casting process is as follows: the supplementary electrodes are continuously supplemented to the molten electroslag position through the guiding channels, and thus the smelting casting process is completed. Therefore, the method and device for manufacturing the three-dimensionally changed special-shaped casting through electroslag smelting casting is mainly suitable for casting of the three-dimensionally changed special-shaped casting.

Description

technical field [0001] The invention relates to the field of three-dimensionally changing special-shaped castings produced by electroslag melting, in particular to an electroslag melting manufacturing method and device for three-dimensionally changing special-shaped castings. Background technique [0002] Electroslag casting, as a casting process integrating refining and forming, is currently widely used in fields with high casting quality requirements. Generally, the consumable electrode is used as the casting raw material for its melting and casting, and the consumable electrode is placed in the molten slag layer of the mold to complete the remelting process. This process needs to maintain a safe distance between the electrode and the inner cavity of the mold, which requires During the melting and casting process, the self-consumable electrode moves downwards to replenish along with the melting and casting, and completes the entire melting and casting process. [0003] Fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D23/10
CPCB22D23/10
Inventor 徐超胡浩于川张政纬李广俊彭磊
Owner 沈阳市盛华特种铸造有限公司
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