CN108645678A - A kind of silver-plated layer thickness metallographic test method of fastener - Google Patents
A kind of silver-plated layer thickness metallographic test method of fastener Download PDFInfo
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- CN108645678A CN108645678A CN201810703794.6A CN201810703794A CN108645678A CN 108645678 A CN108645678 A CN 108645678A CN 201810703794 A CN201810703794 A CN 201810703794A CN 108645678 A CN108645678 A CN 108645678A
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- rotating speed
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- waterproof abrasive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/32—Polishing; Etching
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
- G01N2001/2866—Grinding or homogeneising
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
- G01N2001/2873—Cutting or cleaving
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Abstract
The invention discloses a kind of silver-plated layer thickness metallographic test methods of fastener, include the following steps：The method for the part wire cutting plated is by sample well cutting；It is inlayed on mounting press, parameter is：180 DEG C of temperature, time 5 divide 30 seconds, pressure 25MPa；120# waterproof abrasive papers are roughly ground, diameter 230mm, rotating speed 500r/min, stock removal 0.3mm；400# waterproof abrasive paper fine grindings, diameter 230mm, rotating speed 500r/min eliminate the cut that 120# sand paper leaves；1200# waterproof abrasive papers refine, diameter 230mm, rotating speed 500r/min, eliminate the cut that 400# sand paper leaves；It is polished on polishing machine with the diamond of 2.5um, rotating speed 1350r/min is polished 30 60 seconds；Continue to polish on woollen polishing cloth, rotating speed 1350r/min.To the minute surface of bright and clean no marking；Then it is measured under microscope.It is accurate that the present invention measures, silver layer distinct, and silver-plated layer surface is clean.
Description
Technical field
The invention belongs to detection technique fields, relate in particular to a kind of silver-plated layer thickness metallographic test method of fastener.
Background technology
High-temperature alloy material production bolt, nut product because have higher anti-oxidant, corrosion-resistant, preferable high temperature make
With performance, and it is widely used on aircraft engine, it may also be used for the industries such as ship, oil exploration.High-temperature alloy bolt, nut
When use at high temperature, it is bonded in order to prevent, it is necessary to it is silver-plated outside part, to increase its greasy property, it is convenient for
Dismounting, use during assembly and subsequent maintenance.Provide there is certain requirement to silver-plated layer thickness according to standard.
Plate one layer of silver outside part according to conventional surface treatment method, this when metallographic specimen is inlayed, because inlay with
The silver layer combination of piece surface is not fine and close, and there are gaps, influence the accuracy of measurement result.In the preparation process of metallographic specimen
In, such as add originally water cooling according to conventional in polishing, due to having impurity in tap water, can cause silver layer surface it is unintelligible,
It is unclean.In order to avoid this problem, must be polished with absolute ethyl alcohol in polishing.
Invention content
It is an object of the invention to a kind of measurement for overcoming disadvantages mentioned above and providing is accurate, silver layer distinct, silver coating
The silver-plated layer thickness metallographic test method of the clean fastener in surface.
The object of the invention and its technical problem underlying is solved using following technical scheme to realize：
A kind of silver-plated layer thickness metallographic test method of fastener of the present invention, includes the following steps：
（1）The method for the part wire cutting plated is by sample well cutting；
（1）It is inlayed on mounting press, parameter is：180 DEG C of temperature, time 5 divide 30 seconds, pressure 25MPa；
（2）120# waterproof abrasive papers are roughly ground, diameter 230mm, rotating speed 500r/min, stock removal 0.3mm；
（3）400# waterproof abrasive paper fine grindings, diameter 230mm, rotating speed 500r/min eliminate the cut that 120# sand paper leaves；
（4）1200# waterproof abrasive papers refine, diameter 230mm, rotating speed 500r/min, eliminate the cut that 400# sand paper leaves；
（5）It is polished, rotating speed 1350r/min, is polished 30-60 seconds on polishing machine with the diamond of 2.5um；
（6）Continue to polish on woollen polishing cloth, rotating speed 1350r/min.To the minute surface of bright and clean no marking；
（7）Then it is measured under microscope.
A kind of silver-plated layer thickness metallographic test method of above-mentioned fastener, wherein：Step（6）It is thrown with woollen polishing cloth
Light is cooled down with absolute ethyl alcohol.
Compared with prior art, the present invention there is apparent advantageous effect, as can be known from the above technical solutions：The present invention eliminates
The gap of silver layer and inlay；Silver layer distinct measures convenient for accurate；Polishing is carried out cold with absolute ethyl alcohol on polishing cloth
But, the impurity in tap water is avoided, keeps silver layer surface clear, clean.
Specific implementation mode
A kind of silver-plated layer thickness metallographic test method of fastener, includes the following steps：
（1）The method for the part wire cutting plated is by sample well cutting；
（1）It is inlayed on Si Teer Citopress-30 mounting press, parameter is：180 DEG C of temperature, the time 5 divides 30 seconds, pressure
25MPa（250bar）；
（2）120# waterproof abrasive papers are roughly ground, diameter 230mm, rotating speed 500r/min, stock removal 0.3mm；
（3）400# waterproof abrasive paper fine grindings, diameter 230mm, rotating speed 500r/min eliminate the cut that 120# sand paper leaves；
（4）1200# waterproof abrasive papers refine, diameter 230mm, rotating speed 500r/min, eliminate the cut that 400# sand paper leaves；
（5）It is polished, rotating speed 1350r/min, is polished 30-60 seconds on metallographic test polishing machine with the diamond of 2.5um；
（6）Continue to polish on woollen polishing cloth, rotating speed 1350r/min.To bright and clean no marking minute surface, with absolute ethyl alcohol into
Row cooling；
（7）Then it is measured under Lycra DMI 3000M type microscopes.
The above described is only a preferred embodiment of the present invention, being not intended to limit the present invention in any form, Ren Hewei
Be detached from technical solution of the present invention content, according to the technical essence of the invention to made by above example it is any it is simple modification, etc.
With variation and modification, in the range of still falling within technical solution of the present invention.
Claims (2)
1. a kind of silver-plated layer thickness metallographic test method of fastener, includes the following steps：
（1）The method for the part wire cutting plated is by sample well cutting；
（1）It is inlayed on mounting press, parameter is：180 DEG C of temperature, time 5 divide 30 seconds, pressure 25MPa；
（2）120# waterproof abrasive papers are roughly ground, diameter 230mm, rotating speed 500r/min, stock removal 0.3mm；
（3）400# waterproof abrasive paper fine grindings, diameter 230mm, rotating speed 500r/min eliminate the cut that 120# sand paper leaves；
（4）1200# waterproof abrasive papers refine, diameter 230mm, rotating speed 500r/min, eliminate the cut that 400# sand paper leaves；
（5）It is polished, rotating speed 1350r/min, is polished 30-60 seconds on polishing machine with the diamond of 2.5um；
（6）Continue to polish on woollen polishing cloth, rotating speed 1350r/min, until the minute surface of bright and clean no marking；
（7）Then it is measured under microscope.
2. a kind of silver-plated layer thickness metallographic test method of fastener as described in claim 1, wherein：Step（6）It is thrown with woollen cloth
Light cloth is polished, and is cooled down with absolute ethyl alcohol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810703794.6A CN108645678A (en) | 2018-06-30 | 2018-06-30 | A kind of silver-plated layer thickness metallographic test method of fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810703794.6A CN108645678A (en) | 2018-06-30 | 2018-06-30 | A kind of silver-plated layer thickness metallographic test method of fastener |
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| CN108645678A true CN108645678A (en) | 2018-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810703794.6A Pending CN108645678A (en) | 2018-06-30 | 2018-06-30 | A kind of silver-plated layer thickness metallographic test method of fastener |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111751445A (en) * | 2019-03-26 | 2020-10-09 | 中国科学院金属研究所 | Analysis and statistical method for sizes of inclusion defects in titanium alloy component |
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| CN104483246A (en) * | 2014-12-01 | 2015-04-01 | 上海交通大学 | Method for displaying austenitic grain size of high-Cr heat resistant steel |
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2018
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Patent Citations (6)
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| CN103063492A (en) * | 2012-12-28 | 2013-04-24 | 河北农业大学 | Method for battery grid Pb-Ca alloy metallographic sample preparation and structure demonstration |
| CN103759999A (en) * | 2014-01-26 | 2014-04-30 | 国家电网公司 | Metallographic sample preparation method for brittle and hard oxide layer on inner wall of heating surface tube |
| CN104458511A (en) * | 2014-12-01 | 2015-03-25 | 上海交通大学 | Method for testing autstenitic grain size of steel bainite structure for nuclear pressure vessel |
| CN104483246A (en) * | 2014-12-01 | 2015-04-01 | 上海交通大学 | Method for displaying austenitic grain size of high-Cr heat resistant steel |
| CN104878389A (en) * | 2015-06-01 | 2015-09-02 | 金川集团股份有限公司 | Pure-nickel metallographic etchant and corroding method using same |
| CN105177579A (en) * | 2015-09-30 | 2015-12-23 | 金川集团股份有限公司 | Method for corrosion of Ni-Mn-Si-Cr alloy |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111751445A (en) * | 2019-03-26 | 2020-10-09 | 中国科学院金属研究所 | Analysis and statistical method for sizes of inclusion defects in titanium alloy component |
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Application publication date: 20181012 |