Titanium alloy chemical milling engraving process

Abstract

The invention relates to a titanium alloy chemical milling engraving process. According to the invention, laser and digital technologies are combined; laser energy and protective film thickness are controlled, and programming is carried out according to chemical milling process characteristic values, such that chemical milling and engraving can be accomplished in one step. Aiming at different film thicknesses, laser engraving is carried out. Through film penetrating tests, laser energy is determined, and a relationship between laser energy and film thickness is established. Through determining chemical milling axial and radial erosion ratio, laser engraving size allowance is determined, and a laser engraving size allowance problems is solved. The process provided by the invention has the advantages that: laser and digital technologies are combined; laser energy and protective film thickness are controlled, and programming is carried out according to chemical milling process characteristic values, such that chemical milling and engraving can be accomplished in one step; a traditional engraving technology is replaced, production period is shortened, and size precision is improved. Also, a template is not needed, such that large amounts of materials used for manufacturing templates can be saved, and cost is reduced. Also, operator labor intensity can be greatly reduced.

Description

technical field [0001] The invention relates to the field of titanium alloy chemical milling, and in particular provides a titanium alloy chemical milling process. Background technique [0002] Before chemical milling of titanium alloys, all surfaces of parts are coated with a protective layer. During chemical milling, the protective layer of the part that needs to be milled is removed, so that the part to be chemically milled is exposed to a specific chemical solution. Under certain conditions , to selectively etch the material to obtain the desired shape and size of the part. This process of removing the protective layer of the part to be milled before the chemical milling of all workpieces coated with a protective layer is the engraving process. The traditional engraving process is to use a pre-designed and manufactured template, use a scoring knife to clearly draw all the contour lines on the protective layer along the limited corrosion parts, and then remove the protec...

AI Technical Summary

Problems solved by technology

[0006] Determine the laser engraving size margin by determining the chemical milling axial and radial etching ratio, and solve the problem of laser engraving size margin;