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A high-efficiency clean core removal equipment for hollow turbine blades

A turbine blade and core removal technology, which is applied in the field of turbine blade manufacturing, can solve problems such as polluting the environment of the core removal chamber, and achieve the effects of ensuring automatic continuous operation, accelerating shedding, and enhancing convection exchange

Inactive Publication Date: 2019-03-01
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, a small amount of alkali vapor volatilized in the process of alkali boiling and a large amount of alkali vapor volatilized in the process of adding water will also pollute the environment of the coring chamber

Method used

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  • A high-efficiency clean core removal equipment for hollow turbine blades

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Embodiment

[0035]Firstly, a core removal liquid 5 with an appropriate concentration is prepared in the reaction chamber 6 , and the amount of the core removal liquid 5 is preferably enough to submerge the metal blade 3 . Then reaction chamber 6 is sealed, and each pipeline is connected and sealed well, and the clear water container 16 of automatic water addition in the automatic water adding device and the alkali vapor collection in the alkali vapor recovery device are collected with a sufficient amount of clear water in the clear water container 11, and then Begin to heat up and be heated to lye boiling, and open automatic water-adding device, automatically start water pump 17 and add a certain amount of water by timing delay controller 15 at regular intervals. A small amount of alkali vapor volatilized during the core-removing alkali boiling process and a large amount of alkali vapor volatilized during adding water will be collected by the alkali vapor collection device and dissolved in...

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Abstract

The invention discloses high-efficiency cleaning depoling equipment facing hollow turbine blades. The high-efficiency cleaning depoling equipment comprises the several units of a depoling reaction device, an automatic water adding device, an alkali liquid pumping and injecting device, an alkali steam collecting device and the like. The concentration of depoling liquid is maintained in a designated range through the automatic water adding device so that it is ensured that the depoling reaction can be automatically and continuously conducted for a long time; enhanced convection of the alkali liquid in the depths of a cooling flow channel is achieved through the alkali liquid pumping and injecting device so that it is ensured that a depoling product in the depths of the cooling flow channel can be stripped from the surface of a mold core and brought out timely, therefore removing of the mold core in the depths of the cooling flow channel is speeded up; volatilized alkali steams are dissolved in clean water through the alkali steam collecting device so as to ensure the working environment of a depoling chamber to be unpolluted. The high-efficiency cleaning depoling equipment facing the hollow turbine blades is mainly used for solving the problem that mold cores in the depths of a blade cooling flow channel are difficult to be removed in the normal pressure boiling alkali cooking depoling process of alumina based ceramic mold cores, and meanwhile can solve the problems that the concentration of the alkali liquid is uncontrollable and the alkali steams pollute the environment of the depoling chamber which are caused by boiling and evaporation of the alkali liquid.

Description

technical field [0001] The invention belongs to the technical field of turbine blade manufacturing, and in particular relates to a high-efficiency clean core removal device for hollow turbine blades, which is suitable for rapid removal of aluminum oxide-based ceramic cores of hollow turbine blades with complex and small-shaped cooling channels. Background technique [0002] Modern aero-engines and gas turbines all use hollow turbine blades. The working environment of turbine blades is extremely harsh and the temperature is extremely high. Simply improving the temperature resistance of metals can no longer meet the requirements of their use. It is necessary to optimize the internal cooling channels of the blades to meet the working requirements. Therefore, the cooling channel structure inside the hollow turbine blade becomes more and more complicated. In order to meet the manufacturing requirements of the cooling channel with complex structure, it is necessary to manufacture ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D29/00
CPCB22D29/002
Inventor 朱伟军李涤尘田国强鲁阳鲁中良
Owner XI AN JIAOTONG UNIV
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