CN103014710A - Metallographic corrosive agent for invar welded joint welded by using M93 welding wires and preparation method for metallographic corrosive agent - Google Patents
Metallographic corrosive agent for invar welded joint welded by using M93 welding wires and preparation method for metallographic corrosive agent Download PDFInfo
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- CN103014710A CN103014710A CN2013100213107A CN201310021310A CN103014710A CN 103014710 A CN103014710 A CN 103014710A CN 2013100213107 A CN2013100213107 A CN 2013100213107A CN 201310021310 A CN201310021310 A CN 201310021310A CN 103014710 A CN103014710 A CN 103014710A
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Abstract
The invention relates to metallographic chemical corrosive agents and preparation methods thereof, in particular to a metallographic corrosive agent for an invar welded joint welded by using M93 welding wires and a preparation method for the metallographic corrosive agent. The metallographic corrosive agent and the preparation method thereof aim at solving the metallographic problem of the invar welded joint welded by using the M93 welding wires. The metallographic corrosive agent is prepared by mixing HCl solution with the mass concentration of 36-38%, FeCl3 and water. The preparation method includes: A, accurately weighing HCl solution, FeCl3 and water; B, adding the weighed FeCl3 into the water, and stirring until completely dissolving to form a uniform mixture; and C, slowly adding the HCl into the mixture to form the metallographic corrosive agent, namely, preparation of the metallographic corrosive agent for the invar welded joint welded by using the M93 welding wires is finished.
Description
Technical field
The present invention relates to metallographic chemistry etching reagent and preparation method thereof, particularly relate to invar steel welded joint metallographic etching agent of a kind of M93 of use welding wire welding and preparation method thereof.
Background technology
The invar steel belongs to the Precise Alloy of low expansion alloy classification, and its number of applications is large, and value of the product is also higher.It uses very extensive in electron trade, electron tube, transistor integrated circuit and electric capacity etc. all need to use it, in recent years, the invar steel has had new application development as old material, it is applied to the welding manufacturing of composite material mould, and the welding of invar steel adopts the M93 welding wire can guarantee consistence (low thermal coefficient of expansion) and material integrity and the welding melting zone non-cracking (particularly multi-pass welding) of physicals.
In invar steel welding process, the difference of weldprocedure difference and processing and heat treatment technique tends to obtain dissimilar metallographic structures, thereby property of welded joint is difference to some extent also, cause invar steel welded joint quality after the sample corrosion in metallographicobservation low, the microstructure image is unintelligible, untrue, for the metallographic structure that the invar steel welded joint that obtains desired properties must Welded Joints is observed, and the bonding properties test data, in time adjust weldprocedure, complete processing or thermal treatment process.
Summary of the invention
The present invention is that will to solve invar steel welded joint quality after the sample corrosion in metallographicobservation low, unintelligible, the false problem of microstructure image, and invar steel welded joint metallographic etching agent of a kind of M93 of use welding wire welding and preparation method thereof is provided.
The invar steel welded joint metallographic etching agent of a kind of M93 of use welding wire welding is to be 36%～38% HCl solution, 5～10g FeCl by 50～100mL mass concentration
3Be mixed with 50～100mL water.
A kind of invar steel welded joint metallographic etching agent preparation method of the M93 of use welding wire welding realizes according to the following steps:
One, accurately taking by weighing 50～100mL mass concentration is 36%～38% HCl solution, 5～10g FeCl
3With 50～100mL water;
Two, then with the FeCl that takes by weighing
3Be added to the water, be stirred to it and dissolve fully, form uniform mixing solutions;
Three, be that 36%～38% HCl solution adds in the mixing solutions of step 2 preparation slowly with mass concentration, and stir, namely finished the preparation of the invar steel welded joint metallographic etching agent that uses the welding of M93 welding wire.
The invention effect:
The invar steel welded joint metallographic etching agent formulating of recipe of a kind of M93 of use welding wire welding of the present invention rationally, have that corrosion speed is fast, corrosive effect good, the sample microtexture display effect after the corrosion is good, use the invar steel welded joint metallographic etching agent of M93 welding wire welding, can adapt to the needs of quick metallographic examination in enterprise's production.
Embodiment
Embodiment one: the invar steel welded joint metallographic etching agent of a kind of M93 of the use welding wire welding of present embodiment is to be 36%～38% HCl solution, 5～10g FeCl by 50～100mL mass concentration
3Be mixed with 50～100mL water.
Embodiment two: what present embodiment and embodiment one were different is: a kind of invar steel welded joint metallographic etching agent of the M93 of use welding wire welding is to be 36%～38% HCl solution, 6g FeCl by the 60mL mass concentration
3Be mixed with 70mL water.Other step and parameter are identical with embodiment one.
Embodiment three: the invar steel welded joint metallographic etching agent preparation method of a kind of M93 of use welding wire welding of present embodiment realizes according to the following steps:
One, accurately taking by weighing 50～100mL mass concentration is 36%～38% HCl solution, 5～10g FeCl
3With 50～100mL water;
Two, then with the FeCl that takes by weighing
3Be added to the water, be stirred to it and dissolve fully, form uniform mixing solutions;
Three, be that 36%～38% HCl solution adds in the mixing solutions of step 2 preparation slowly with mass concentration, and stir, namely finished the preparation of the invar steel welded joint metallographic etching agent that uses the welding of M93 welding wire.
Use above embodiment when needs corrode, only need polished metallographic specimen check face immersed in this chemical mordant or with this chemical mordant wiping test check face, become gloomy getting final product to test check face gloss, the time is about 1～5 minute, 20 ℃ of corrosion temperatures.
The present embodiment effect:
The invar steel welded joint metallographic etching agent formulating of recipe of a kind of M93 of the use welding wire welding of present embodiment rationally, have that corrosion speed is fast, corrosive effect good, the sample microtexture display effect after the corrosion is good, use the invar steel welded joint metallographic etching agent of M93 welding wire welding, can adapt to the needs of quick metallographic examination in enterprise's production.
By following verification experimental verification beneficial effect of the present invention:
Test 1:
The invar steel welded joint metallographic etching agent of a kind of M93 of use welding wire welding of this test is by the HCl solution, the 5g FeCl that are 36.5% by the 50mL mass concentration
3Be mixed with 50mL water.
Preparation process is:
One, accurately taking by weighing the 50mL mass concentration is 36.5% HCl solution, 5g FeCl
3With 50mL water;
Two, then with the FeCl that takes by weighing
3Be added to the water, be stirred to it and dissolve fully, form uniform mixing solutions;
Three, be that 36.5% HCl solution adds above-mentioned mixing solutions slowly with mass concentration, and stir, form metallographic etching agent, namely finished the preparation of the invar steel welded joint metallographic etching agent that uses the welding of M93 welding wire.
The etching pit test:
One, metallographic specimen is roughly ground, fine grinding, polishing, is cleaned, dries up according to ordinary method;
Two, polished metallographic specimen check face is immersed in this chemical mordant or with this chemical mordant wiping metallographic specimen check face, become gloomy getting final product to metallographic specimen check face gloss, the time is 4 minutes, 20 ℃ of corrosion temperatures;
The sample that three, will corrode washes under water tap, dries up with 95% alcohol wash again.
This test-results is as follows:
Welded sample after corrosion can show the welding joint microstructure clearly, for example: the boundary line in the welded bonds between weld seam and the mother metal, the weld seam between the different welding beads and the distribution of dendritic situation of weld seam.
Through using proof, the chemical mordant of the invar steel welded joint metallographic structure for using the welding of M93 welding wire of the present invention have good corrosive effect and corrosion speed fast, stable, metallographic examination for the invar steel welded joint that uses the welding of M93 welding wire has high application value, can adapt to the needs of quick metallographic examination in enterprise's production.
Test 2:
The invar steel welded joint metallographic etching agent of a kind of M93 of use welding wire welding of this test is to be 36.5%HCl solution, 6g FeCl by the 60mL mass concentration
3Be mixed with 70mL water.
Preparation process is:
One, accurately taking by weighing the 60mL mass concentration is 36.5% HCl solution, 6g FeCl
3With 70mL water;
Two, then with the FeCl that takes by weighing
3Be added to the water, be stirred to it and dissolve fully, form uniform mixing solutions;
Three, be that 36.5% HCl solution adds above-mentioned mixing solutions slowly with mass concentration, and stir, form metallographic etching agent, namely finished the preparation of the invar steel welded joint metallographic etching agent that uses the welding of M93 welding wire.
The etching pit test:
One, metallographic specimen is roughly ground, fine grinding, polishing, is cleaned, dries up according to ordinary method;
Two, polished metallographic specimen check face is immersed in this chemical mordant or with this chemical mordant wiping metallographic specimen check face, become gloomy getting final product to metallographic specimen check face gloss, the time is 3 minutes, 20 ℃ of corrosion temperatures;
The sample that three, will corrode washes under water tap, dries up with 95% alcohol wash again.
This test-results is as follows:
Welded sample after corrosion can show the welding joint microstructure clearly, for example: the boundary line in the welded bonds between weld seam and the mother metal, the weld seam between the different welding beads and the distribution of dendritic situation of weld seam.
Through using proof, the chemical mordant of the invar steel welded joint metallographic structure for using the welding of M93 welding wire of the present invention have good corrosive effect and corrosion speed fast, stable, metallographic examination for the invar steel welded joint that uses the welding of M93 welding wire has high application value, can adapt to the needs of quick metallographic examination in enterprise's production.
Test 3:
The invar steel welded joint metallographic etching agent of a kind of M93 of use welding wire welding of this test is by the HCl solution, the 9g FeCl that are 36.5% by the 90mL mass concentration
3Be mixed with 100mL water.
Preparation process is:
One, accurately taking by weighing the 90mL mass concentration is 36.5% HCl solution, 9g FeCl
3With 100mL water;
Two, then with the FeCl that takes by weighing
3Be added to the water, be stirred to it and dissolve fully, form uniform mixing solutions;
Three, be that 36.5% HCl solution adds above-mentioned mixing solutions slowly with mass concentration, and stir, form metallographic etching agent, namely finished the preparation of the invar steel welded joint metallographic etching agent that uses the welding of M93 welding wire.
The etching pit test:
One, metallographic specimen is roughly ground, fine grinding, polishing, is cleaned, dries up according to ordinary method;
Two, polished metallographic specimen check face is immersed in this chemical mordant or with this chemical mordant wiping metallographic specimen check face, become gloomy getting final product to metallographic specimen check face gloss, the time is 3 minutes, 20 ℃ of corrosion temperatures;
The sample that three, will corrode washes under water tap, dries up with 95% alcohol wash again.
This test-results is as follows:
Welded sample after corrosion can show the welding joint microstructure clearly, for example: the boundary line in the welded bonds between weld seam and the mother metal, the weld seam between the different welding beads and the distribution of dendritic situation of weld seam.
Through using proof, the chemical mordant of the invar steel welded joint metallographic structure for using the welding of M93 welding wire of the present invention have good corrosive effect and corrosion speed fast, stable, metallographic examination for the invar steel welded joint that uses the welding of M93 welding wire has high application value, can adapt to the needs of quick metallographic examination in enterprise's production.
Claims (3)
1. invar steel welded joint metallographic etching agent that uses M93 welding wire welding, the invar steel welded joint metallographic etching agent that it is characterized in that using the welding of M93 welding wire are to be 36%～38% HCl solution, 5～10g FeCl by 50～100mL mass concentration
3Be mixed with 50～100mL water.
2. a kind of invar steel welded joint metallographic etching agent that uses M93 welding wire welding according to claim 1, the invar steel welded joint metallographic etching agent that it is characterized in that using the welding of M93 welding wire are to be 36%～38% HCl solution, 6g FeCl by the 60mL mass concentration
3Be mixed with 70mL water.
3. a kind of invar steel welded joint metallographic etching agent preparation method who uses M93 welding wire welding as claimed in claim 1 or 2 is characterized in that using the invar steel welded joint metallographic etching agent preparation method of M93 welding wire welding to realize according to the following steps:
One, accurately taking by weighing 50～100mL mass concentration is 36%～38% HCl solution, 5～10g FeCl
3With 50～100mL water;
Two, then with the FeCl that takes by weighing
3Be added to the water, be stirred to it and dissolve fully, form uniform mixing solutions;
Three, be that 36%～38% HCl solution adds in the mixing solutions of step 2 preparation slowly with mass concentration, and stir, namely finished the preparation of the invar steel welded joint metallographic etching agent that uses the welding of M93 welding wire.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104359743A (en) * | 2014-11-18 | 2015-02-18 | 天津理工大学 | Special solution for corrosion of metallographic phase of high-Cr ferritic heat-resistant steel, as well as preparation method of solution |
| CN105486567A (en) * | 2015-11-24 | 2016-04-13 | 太原理工大学 | Chemical erosion agent for displaying macrostructure of expansion alloy, and erosion method thereof |
| CN107747095A (en) * | 2017-10-17 | 2018-03-02 | 中国华能集团公司 | A kind of ni-fe-based alloy weld joint samples metallographic etching agent and application method |
| CN107904599A (en) * | 2017-10-25 | 2018-04-13 | 江苏省沙钢钢铁研究院有限公司 | IF steel metallographic corrosive agent |
| CN108004548A (en) * | 2017-12-06 | 2018-05-08 | 国网山东省电力公司电力科学研究院 | HR3C steel microscopic structures corrosion liquid making method and application after being on active service 50,000 hours |
| CN108004546A (en) * | 2017-12-18 | 2018-05-08 | 金川集团股份有限公司 | A kind of expansion alloy metallographic etchant |
| CN109307654A (en) * | 2018-11-05 | 2019-02-05 | 中国航发航空科技股份有限公司 | A kind of method of quick detection welding heat affected zone |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104359743A (en) * | 2014-11-18 | 2015-02-18 | 天津理工大学 | Special solution for corrosion of metallographic phase of high-Cr ferritic heat-resistant steel, as well as preparation method of solution |
| CN105486567A (en) * | 2015-11-24 | 2016-04-13 | 太原理工大学 | Chemical erosion agent for displaying macrostructure of expansion alloy, and erosion method thereof |
| CN107747095A (en) * | 2017-10-17 | 2018-03-02 | 中国华能集团公司 | A kind of ni-fe-based alloy weld joint samples metallographic etching agent and application method |
| CN107747095B (en) * | 2017-10-17 | 2019-11-22 | 中国华能集团公司 | A kind of ni-fe-based alloy weld joint samples metallographic etching agent and application method |
| CN107904599A (en) * | 2017-10-25 | 2018-04-13 | 江苏省沙钢钢铁研究院有限公司 | IF steel metallographic corrosive agent |
| CN108004548A (en) * | 2017-12-06 | 2018-05-08 | 国网山东省电力公司电力科学研究院 | HR3C steel microscopic structures corrosion liquid making method and application after being on active service 50,000 hours |
| CN108004548B (en) * | 2017-12-06 | 2020-02-21 | 国网山东省电力公司电力科学研究院 | Preparation method and application of HR3C steel microstructure corrosive liquid after being in service for 5 ten thousand hours |
| CN108004546A (en) * | 2017-12-18 | 2018-05-08 | 金川集团股份有限公司 | A kind of expansion alloy metallographic etchant |
| CN109307654A (en) * | 2018-11-05 | 2019-02-05 | 中国航发航空科技股份有限公司 | A kind of method of quick detection welding heat affected zone |
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Application publication date: 20130403 |