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Casting burning-on device and method

A casting and melting pool technology, applied in the field of casting repairing equipment, can solve the problems of inclusions, large size, scrapping of castings, etc., and achieve the effect of avoiding overall scrapping

Inactive Publication Date: 2019-01-15
DONGFANG TURBINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] For some large-scale and super-thick and large-section (≥300mm) ductile iron castings, local shrinkage, shrinkage, inclusions, lack of pouring or other reasons are prone to large-scale defects, and conventional methods such as repair welding cannot be used to achieve defects. repair, resulting in the casting being scrapped as a whole

Method used

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  • Casting burning-on device and method
  • Casting burning-on device and method

Examples

Experimental program
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Effect test

Embodiment 1

[0036] This embodiment provides a casting 100 welding device 001, please refer to figure 1 , this casting 100 welding repair device 001 is used for welding and repairing the defective part 110 of the casting 100. The defective part 110 here should penetrate the opposite sides of the casting 100. If it does not penetrate, it needs to be artificially penetrated by grinding to facilitate the subsequent metal fluid filling.

[0037] Casting 100 welding device 001 includes overflow channel 200 and flushing molten pool 300; overflow channel 200 includes gate end 210 and is used to align the water outlet end 230 of the lower end opening of defective part 110, and water outlet end 230 is provided with for sealing The first sealing member of the connecting part of the water outlet 230 and the casting 100 .

[0038] In this embodiment, the first seal is formed by filling the gap between the water outlet 230 and the casting 100 with resin sand, and the setting of the first seal ensures ...

Embodiment 2

[0046] This embodiment provides a casting 100 weld repair method, please refer to figure 1 In this casting 100 repairing method, the casting 100 repairing device 001 described in the first embodiment is used to repair the defective part 110 of the casting 100 .

[0047] Its specific implementation steps include:

[0048] The morphology of the defect 110 is analyzed, including that the defect 110 is mainly in the casting 100 , the size of the defect 110 , and the composition analysis of the defect 110 . According to the above analysis, the way of repairing the defect, the way of placing the casting 100 and the composition of the poured molten metal are determined.

[0049] The interior of the defective part 110 is polished and smoothed to eliminate sharp corners. If the defective part 110 is a perforation defect, the edges and corners on both sides of the perforation are blunted directly; two sides.

[0050] After the castings 100 are placed, they are spliced ​​with refract...

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Abstract

The invention provides a casting burning-on device and method, and belongs to the technical field of casting of aductile iron castings. The casting burning-on device comprises an overflow passage anda flushing supplementing molten pool; the overflow passage comprises a sprue end and a water outlet end used for aligning at a lower end opening of a defect portion, and the water outlet end is provided with a first sealing member for sealing a connection portion of the water outlet end and a casting; the flushing supplementing molten pool is arranged at an upper end opening of the defect portion;the flushing supplementing molten pool is provided with an opening end and a connecting end which are oppositely arranged, and the connecting end is used for being connected with the defect portion;the connecting end is further provided with a second sealing member for sealing a connecting portion of the flushing supplementing molten pool and the casting; and the height of the horizontal surfaceof the sprue end is higher than the height of the horizontal plane of the upper end opening of the defect portion. Through the casting burning-on device, the entire defect portion can be filled withmolten metal until the molten metal enters the flushing supplementing molten pool, the molten metal in the flushing supplementing molten pool can achieve the feeding effect, and the sufficient moltenmetal in the defect portion is guaranteed.

Description

technical field [0001] The invention relates to the technical field of casting of ductile iron castings, in particular to a casting repairing device and method. Background technique [0002] For some large-scale and super-thick and large-section (≥300mm) ductile iron castings, local shrinkage, shrinkage, inclusions, lack of pouring or other reasons are prone to large-scale defects, and conventional methods such as repair welding cannot be used to achieve defects. repair, resulting in the casting being scrapped as a whole. In order to repair such defects of ductile iron castings, a safe, convenient and low-cost repair method is urgently needed to solve such problems under the premise of meeting relevant technical conditions. Contents of the invention [0003] The present invention provides a casting repairing device and method, aiming to solve the above-mentioned problems existing in the casting repairing device and method in the prior art. [0004] A casting welding repa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D19/10
CPCB22D19/10
Inventor 甄立军刘建勇肖远余刘鹏陈红军徐俊洪方铭郭春林王鹏坤唐小华王章明严杰罗超张昊伟
Owner DONGFANG TURBINE CO LTD
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