Surface recombination energy machining method for high-water-head impact type runner bucket

A technology of surface compounding and processing method, which is applied in the field of surface compounding energy processing of high-head impact runner water buckets, and can solve the problems of reducing service life, affecting the operation safety of hydraulic turbine units, fatigue cracks, etc.

Inactive Publication Date: 2020-05-19
CHONGQING WATER TURBINE WORKS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the existing impact runner water bucket is manufactured, it is generally ground and polished manually after rough and finish machining by numerical control; after manual grinding and polishing, its surface roughness can only reach Ra3.2, and other operations cannot be performed. Surface treatment: after several years of opera

Method used

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  • Surface recombination energy machining method for high-water-head impact type runner bucket
  • Surface recombination energy machining method for high-water-head impact type runner bucket
  • Surface recombination energy machining method for high-water-head impact type runner bucket

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Embodiment 1

[0022] Embodiment 1: as figure 1 As shown, a high water head impact type runner bucket surface composite energy processing method is characterized in that the method includes the following laying steps: 1), clamping; clamping the runner 1 to be processed to the seven-axis five Linkage CNC machining center 2; 2) Installation; install the Hawker actuator on the seven-axis five-linkage CNC machining center 2, and connect it to the Hawker equipment system at the same time; 3) Determine the machining benchmark of the runner 1; 4) Use Hawker actuator A3 executes the written processing program to process the water bucket surface of runner 1; 5) Use Hawker actuator B4 to execute the written processing program to process the root of runner 1 bucket; 6 ) After completing the surface compound energy processing of a water bucket through step 4) and step 5), use the CNC rotary table indexing of the seven-axis five-linkage CNC machining center to realize the processing of other water bucket...

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PUM

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Abstract

The invention discloses a surface recombination energy machining method for a high-water-head impact type runner bucket. The surface recombination energy machining method comprises the following stepsthat 1) clamping is conducted; 2) mounting is conducted; 3) the machining reference of a runner is determined; 4) a written machining program is executed by using a Hauck energy actuator A, and the surface of the runner bucket is machined; 5) a written machining program is executed by using a Hauck energy actuator B, and the root of the runner bucket is machined; and (6) after surface recombination energy machining of one bucket is completed through the step 4) and the step 5), indexing is conducted through a numerical control rotary workbench of a machining center, and machining of other water buckets one by one is achieved through the same steps. According to the surface recombination energy machining method for the high-water-head impact type runner bucket, anti-fatigue manufacturing of the root of the bucket is achieved, the anti-fatigue degree of the root of the bucket is improved, generation of fatigue cracks is reduced, mirror finishing of the inner side space molded surface ofthe bucket is achieved, a nano layer is directly machined on the inner side space molded surface of the bucket, residual tensile stress of the root of the bucket and a water cutting blade is eliminated, height-controllable pressure stress is preset, and the service life of the impact type runner is prolonged.

Description

technical field [0001] The invention relates to a method for processing a runner bucket, in particular to a method for processing the surface of a high-head impact type runner bucket with composite energy. Background technique [0002] At present, in the hydraulic turbine industry, the high head impact runner is the core component of the hydroelectric generator set, and is the part most prone to wear and fatigue cracks during the operation of the unit. Among them, the generation and expansion of fatigue cracks will directly affect The operation of the hydroelectric generator set is safe. Therefore, the anti-fatigue performance of the high head impact runner is high, which is the safety guarantee for the operation of the unit. [0003] When the existing impact runner water bucket is manufactured, it is generally ground and polished manually after rough and finish machining by numerical control; after manual grinding and polishing, its surface roughness can only reach Ra3.2, a...

Claims

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Application Information

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IPC IPC(8): B23D79/00
CPCB23D79/00
Inventor 刘声福余江浪
Owner CHONGQING WATER TURBINE WORKS
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