Casting method of runner

A runner and casting technology, which is applied in casting molding equipment, casting molds, casting mold components, etc., can solve the problems of unstable casting quality of runners, high manufacturing costs, and long cycle times.

Active Publication Date: 2019-03-15
KOCEL STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the deficiencies of the traditional casting method, the present invention provides a casting method for the runner to solve the problems of unstable casting quality, high manufacturing cost and long cycle of the runner, and realize the integral casting and near net forming of the runner

Method used

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Embodiment Construction

[0029] The implementation of the present invention will be described below through specific examples in conjunction with the accompanying drawings, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0030] It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not intended to limit the present invention Therefore, it has no technical substantive meaning, and any modifi...

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Abstract

The invention belongs to the casting field, and mainly relates to a casting method of a runner, for integral casting of the runner. The method takes an upper crown, a lower ring and blades of the runner as a whole to carry out casting processing and molding, and mainly comprises the following steps: casting process design in which a chiller is arranged on the periphery of an upper crown flange, aring riser is arranged at a spiral-shaped strip hot joint position of a connecting part of the upper crown and the blades, and a dark riser neck is arranged at the hot joint position of a connecting part of the lower ring and the blades; dimension control design in which the runner is divided into a non-flow surface and a flow surface for sticking design; molding process design in which runner molding process uses core and buried box combination. The runner sand core is divided into an inner sand core and an outer sand core. The inner sand core and the outer sand core are formed integrally by3D printing. The method of the invention overcomes the shortcomings of the traditional casting method, reduces the manufacturing cost, shortens the production cycle, improves the casting quality, improves the manufacturing accuracy and realizes the near-net shape of the runner casting.

Description

technical field [0001] The invention belongs to the field of casting, and mainly relates to a casting method of a runner, which is used to realize the integral casting of the runner without assembly welding. Background technique [0002] The runner of the water turbine is the core part of the water turbine unit. The runner is mainly composed of the upper crown, the lower ring and several blades. It has the characteristics of narrow and long flow channel and complex spatial structure, especially the blade parts are special-shaped curved surfaces that cannot be expanded in space. The traditional manufacturing method of the turbine runner adopts separate casting of the upper crown, lower ring and blades, and then realizes the integration of the runner through assembly welding. , but assembly welding is required to realize the production of the overall runner, which leads to a substantial increase in the cycle time. At the same time, due to the weld seams on the upper crown, low...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/28B22C9/08B22C9/10B22D15/00B22C9/02
CPCB22C9/02B22C9/088B22C9/103B22C9/28B22D15/00
Inventor 苏志东罗永建唐钟雪冯周荣马文治
Owner KOCEL STEEL
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