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Determination method for sodium hydroxide in alkaline chemical milling solution for aluminum alloy

A technology of sodium hydroxide and determination method, which is applied in the field of chemical cutting to achieve the effect of ensuring quality and stabilizing the quality of chemical milling process

Inactive Publication Date: 2013-07-10
HARBIN
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The purpose of the present invention is to propose a method for measuring sodium hydroxide in an aluminum alloy alkaline chemical milling solution, to solve the problem of chemical milling process control that has plagued aviation companies for many years, to stabilize the quality of the chemical milling process, and to ensure chemical milling in the aviation industry. quality of parts

Method used

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  • Determination method for sodium hydroxide in alkaline chemical milling solution for aluminum alloy
  • Determination method for sodium hydroxide in alkaline chemical milling solution for aluminum alloy
  • Determination method for sodium hydroxide in alkaline chemical milling solution for aluminum alloy

Examples

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Embodiment 1

[0047] According to the test method determined in the present invention, respectively prepare the aluminum alloy chemical milling groove liquid of standard sodium hydroxide content 220.0g / L, 180.0g / L, 200.0g / L and carry out implementation test, test data see table 1, table 2 and Table 3.

[0048] The mensuration test method embodiment verification test data 1 of table 1 sodium hydroxide content

[0049]

[0050] The determination test method embodiment verification test data 2 of table 2 sodium hydroxide content

[0051]

[0052] The determination test method embodiment verification test data 3 of table 3 sodium hydroxide content

[0053]

[0054] Seen from the above examples, the assay result of total sodium hydroxide is basically consistent with the addition amount, fully satisfying the test requirements.

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Abstract

The invention relates to a determination method for sodium hydroxide in an alkaline chemical milling solution for aluminum alloy, belonging to the field of chemical cutting technology. The determination method is characterized by comprising the following steps: preparation of reagents; preparation of an instrument; sampling; testing; and calculation of the content of sodium hydroxide. The determination method provided by the invention is beneficial for overcoming the problem of process control of chemical milling troubled aviation enterprises for years and enables quality of a chemical milling process to be stabilized and quality of chemically milled parts used in the aviation industry to be guaranteed.

Description

technical field [0001] The invention belongs to the chemical cutting technology and relates to a method for measuring sodium hydroxide in an aluminum alloy alkaline chemical milling solution. Background technique [0002] Chemical milling is an important aluminum alloy processing method widely used in aviation and aerospace industries, and it is now used by many OEMs. The chemical milling process can replace some mechanical processing and corrode excess metal from the surface of the part to change its size and reduce its weight. In addition, when mechanical processing cannot be achieved and chemical milling can meet the design requirements of the part, this method can also be used. Process processing, such as hyperboloids, large-area thin plate parts, and other complex parts can all use chemical milling. At present, chemical milling is an important processing method in aviation main engine factories. The quality of chemical milling of parts depends on the quality of chemic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/42
Inventor 王振林杨红何芳张新蓉孙浩董杰涛文颖慧
Owner HARBIN
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