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Method for observing metallographic structure on titanium/steel explosion welding interface

A technology of explosive welding and metallographic structure, which is applied in the observation field of titanium/steel explosive welding interface metallographic structure, which can solve the problems of difficult to obtain a clear interface structure, non-corrosion resistance, etc., so that the interface metallographic structure is clearly visible , easy-to-operate effect

Inactive Publication Date: 2011-05-25
WESTERN METAL MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Titanium / steel composite material metallographic specimens are difficult to obtain a clear interface structure on the steel side due to the corrosion resistance of steel

Method used

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  • Method for observing metallographic structure on titanium/steel explosion welding interface
  • Method for observing metallographic structure on titanium/steel explosion welding interface
  • Method for observing metallographic structure on titanium/steel explosion welding interface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Machining a metallographic observation plane at the titanium / steel explosive welding interface;

[0020] (2) Use the machined metallographic observation plane to 150 # , 700 # The metallographic water sandpaper is ground step by step, and the sand particles on the metallographic observation plane are washed away after grinding;

[0021] (3) The metallographic observation plane, which has been ground and washed away from sand, is pickled with HF solution with a volume percentage concentration of 10%;

[0022] (4) Put the metallographic observation plane after pickling on the polishing machine, using Cr 2 O 3 Solution and 2.5μm diamond powder for mechanical polishing;

[0023] (5) Use a corrosive solution to etch the part of titanium in the mechanically polished metallographic observation plane until the titanium surface becomes blue-gray, and then wipe the steel in the metallographic observation plane with a 2% volume percent nitric acid alcohol solution Part, make the steel...

Embodiment 2

[0027] (1) Machining a metallographic observation plane at the titanium / steel explosive welding interface;

[0028] (2) Use the machined metallographic observation plane to 150 # , 700 # The metallographic water sandpaper is ground step by step, and the sand particles on the metallographic observation plane are washed away after grinding;

[0029] (3) The metallographic observation plane, which has been ground and washed away from sand, is pickled with HF solution with a volume percentage concentration of 15%;

[0030] (4) Put the metallographic observation plane after pickling on the polishing machine, using Cr 2 O 3 Solution and 2.5μm diamond powder for mechanical polishing;

[0031] (5) Use a corrosive solution to etch the part of the titanium in the mechanically polished metallographic observation plane until the titanium surface becomes blue-gray, and then wipe the steel in the metallographic observation plane with a 3% volume percent nitric acid alcohol solution Part, make the s...

Embodiment 3

[0035] (1) Machining a metallographic observation plane at the titanium / steel explosive welding interface;

[0036] (2) Use the machined metallographic observation plane to 150 # , 700 # The metallographic water sandpaper is ground step by step, and the sand particles on the metallographic observation plane are washed away after grinding;

[0037] (3) The metallographic observation plane, which has been ground and washed away from sand, is pickled with HF solution with a volume percentage concentration of 20%;

[0038] (4) Put the metallographic observation plane after pickling on the polishing machine, using Cr 2 O 3 Solution and 2.5μm diamond powder for mechanical polishing;

[0039] (5) Use a corrosive solution to etch the part of titanium in the mechanically polished metallographic observation plane until the titanium surface becomes blue-gray, and then wipe the steel in the metallographic observation plane with a 4% volume percent nitric acid alcohol solution Part, make the steel...

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Abstract

The present invention discloses a method for observing a metallographic structure on a titanium / steel explosion welding interface, which comprises the following steps: 1, machining a metallographic structure observation plane on the titanium / steel explosion welding interface; 2, grinding the metallographic structure observation plane; 3, carrying out pickling with HF solution; 4, carrying out mechanical polishing; 5, eroding titanium and polishing steel; and 6, carrying out observation. The method is easy to operate, the metallographic structure on the titanium / steel explosion welding interface can be observed clearly by adopting the method, and no special equipment is needed.

Description

Technical field [0001] The invention belongs to the technical field of material surface structure observation, and specifically relates to a method for observing the metallographic structure of a titanium / steel explosive welding interface. Background technique [0002] Titanium / steel clad plate is a kind of titanium plate and steel plate formed by explosive welding. Titanium steel clad plate has the corrosion resistance of titanium, the strength of ordinary steel plate, and the lower cost than titanium plate. It is mainly used in chemical equipment, Pressure vessels and condenser tube sheet equipment in power plants have recently been used in bleaching treatment tanks in paper mills and acid and alkali treatment tanks in sewage treatment plants. In order to study the process performance of the titanium / steel composite explosive plate, it is necessary to observe the interface and interface structure to understand the degree of welding of the material after the explosion, measure t...

Claims

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Application Information

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IPC IPC(8): G01N1/32
Inventor 马红征张雪华武晶晶叶红川李平仓樊可社郑学军曲恒磊陈绍揩
Owner WESTERN METAL MATERIAL
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