CN112255074A - Metallographic specimen embedding method - Google Patents
Metallographic specimen embedding method Download PDFInfo
- Publication number
- CN112255074A CN112255074A CN202010967057.4A CN202010967057A CN112255074A CN 112255074 A CN112255074 A CN 112255074A CN 202010967057 A CN202010967057 A CN 202010967057A CN 112255074 A CN112255074 A CN 112255074A
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- CN
- China
- Prior art keywords
- metallographic
- embedding
- mold
- metallographic specimen
- stainless steel
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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
- G01N1/36—Embedding or analogous mounting of samples
-
- 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
-
- 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
- G01N1/36—Embedding or analogous mounting of samples
- G01N2001/366—Moulds; Demoulding
Abstract
The invention provides a metallographic specimen embedding method, which comprises the steps of preparing a metallographic specimen, self-adhesive stainless steel tin, an embedding material, an embedding mold, a mold top sealing cover and waterproof abrasive paper of 180#, 400#, 800#, 1200# and 2000 #; cutting the self-adhesive stainless steel tin paper into corresponding sizes according to the size of the metallographic specimen, then tearing off an anti-sticking film on the self-adhesive stainless steel tin paper, and sticking a glue layer downwards on the surface of the metallographic specimen; placing the metallographic specimen into the center of an embedding mold, adding a certain amount of embedding material into the embedding mold, and pressing a top sealing cover of the mold on the filled bakelite powder for sealing; heating the metallographic specimen embedded in the mold to 140 ℃, preserving heat for 8-15 minutes, stopping heating, cooling, taking out the metallographic specimen bonded in the mold, polishing the surface of the bonded metallographic specimen by adopting 2000#, 1200#, 800#, 400# and 180# waterproof abrasive paper step by step, polishing the surface of the bonded metallographic specimen, and finally carrying out metallographic observation.
Description
Technical Field
The invention relates to a metallographic specimen embedding method.
Background
Metallographic specimen inlaying generally refers to a process method for inlaying or clamping a specimen to facilitate polishing and grinding of the specimen and improve working efficiency and experimental accuracy due to the difficulty in grinding and polishing caused by undersize or irregular shape of the specimen.
The existing metallographic specimen inlaying method with wider application is to put the observation surface of the metallographic specimen downwards in the center of an inlaying mold, then add a certain amount of inlaying material into the center of the inlaying mold, then press a top sealing cover on a filler, cool the top sealing cover after heating and heat preservation, take out the metallographic specimen adhered with the inlaying material after cooling, then polish the metallographic specimen by using waterproof abrasive paper, finally polish and corrode the metallographic specimen, observe the metallographic specimen after polishing and corroding, but because the texture of the inlaying material is generally soft and the texture of the metallographic specimen is hard, the positions where the metallographic specimen is connected with the inlaying material can generate the phenomena of rounding, relief and the like after polishing and polishing, and the phenomena can influence the observation effect and the observation accuracy of the metallographic specimen.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a metallographic specimen embedding method and a device, so that the adhered metallographic specimen cannot generate rounding, embossment and other phenomena after polishing and grinding, and the observation effect and the observation accuracy of the metallographic specimen are ensured.
In order to achieve the aim, the invention provides a metallographic specimen embedding method which is characterized by comprising the following steps: the method comprises the following steps:
preparing a metallographic specimen, self-adhesive stainless steel tin, an embedding material, an embedding mold, a mold top sealing cover and waterproof sand paper of 180#, 400#, 800#, 1200#, 2000 #;
cutting the self-adhesive stainless steel tin paper into corresponding sizes according to the size of the metallographic specimen, tearing off an anti-sticking film on the self-adhesive stainless steel tin paper, and sticking a glue layer downwards on the surface of the metallographic specimen;
thirdly, placing the metallographic specimen pasted with the self-adhesive stainless steel tinfoil layer into the center of the embedding mold, adding a certain amount of embedding material into the embedding mold, and pressing a top sealing cover of the mold on the filled bakelite powder for sealing;
step four, heating the metallographic sample in the embedded mold to 140 ℃, preserving heat for 8-15 minutes until the metallographic sample pasted with a layer of self-adhesive stainless steel tin paper is completely adhered with the embedding material, stopping heating, cooling, and taking out the metallographic sample adhered in the mold after complete cooling;
and fifthly, grinding the surfaces of the bonded metallographic samples step by using 2000#, 1200#, 800#, 400# and 180# waterproof sand paper respectively, then polishing the surfaces of the bonded metallographic samples, and finally carrying out metallographic observation on the surfaces.
The invention is further set that the hardness of the self-adhesive stainless steel tinfoil is the same as that of the metal sample.
The invention is further configured that the inlay material may be one of polyvinyl chloride, polystyrene and bakelite powder.
The invention is further arranged that the inlay mould is circular.
The beneficial effect who so sets up is: adopt above-mentioned scheme, the surface of metallographic specimen is pasted one deck stainless steel tin paper before the heating, in order to guarantee that metallographic specimen can not with the inlay material direct contact when the heating, after the process heating, keep warm and also cool off, the inlay material can be in the same place with the metallographic specimen bonding, but this moment metallographic specimen and inlay material separate one deck stainless steel tin paper between, and the surface of this stainless steel tin paper and metallographic specimen laminates mutually, and the hardness of this stainless steel tin paper is close with metallographic specimen's hardness mutually, so metallographic specimen's surface can not produce rounding and phenomenons such as relief because of the difference of the material soft or hard texture of laminating when burnishing and polishing, thereby the observation effect and the accuracy of observing of metallographic specimen have been guaranteed.
And this inlaying method inlays the selection kind of material and is more various, can select different inlays the material as required, and when the inlay material is bakelite powder, its advantage is: the color of the adhesive is various, the adhesive is easy to distinguish from a metallographic sample, the texture is hard, and the metallographic sample is not easy to generate chamfers during adhesion. When the embedding material is polyvinyl chloride or polystyrene, the acid and alkali resistant corrosion resistance is good.
Drawings
FIG. 1 is a metallographic observation diagram showing that a conventional metallographic specimen without being pasted with stainless steel tinfoil has relief after being inlaid;
FIG. 2 is a metallographic observation showing that the metallographic specimen to which a layer of stainless tinfoil is attached has no relief and rounding after the inlaying.
Detailed Description
The embodiment of the invention is shown in figures 1-2, and the metallographic sample embedding method is characterized in that: the method comprises the following steps:
preparing a metallographic specimen, self-adhesive stainless steel tin, an embedding material, an embedding mold, a mold top sealing cover and waterproof sand paper of 180#, 400#, 800#, 1200#, 2000 #;
cutting the self-adhesive stainless steel tin paper into corresponding sizes according to the size of the metallographic specimen, tearing off an anti-sticking film on the self-adhesive stainless steel tin paper, and sticking a glue layer downwards on the surface of the metallographic specimen;
thirdly, placing the metallographic specimen pasted with the self-adhesive stainless steel tinfoil layer into the center of the embedding mold, adding a certain amount of embedding material into the embedding mold, and pressing a top sealing cover of the mold on the filled bakelite powder for sealing;
step four, heating the metallographic sample in the embedded mold to 140 ℃, preserving heat for 8-15 minutes until the metallographic sample pasted with a layer of self-adhesive stainless steel tin paper is completely adhered with the embedding material, stopping heating, cooling, and taking out the metallographic sample adhered in the mold after complete cooling;
and fifthly, grinding the surfaces of the bonded metallographic samples step by using 2000#, 1200#, 800#, 400# and 180# waterproof sand paper respectively, then polishing the surfaces of the bonded metallographic samples, and finally carrying out metallographic observation on the surfaces.
The hardness of the self-adhesive stainless steel tinfoil is the same as that of the metal sample.
Before heating, a layer of stainless steel tinfoil is firstly adhered to the surface of the metallographic specimen to ensure that the metallographic specimen cannot be in direct contact with the embedding material when being heated, heating and preserving heat until the embedding material adhered with the stainless steel tinfoil is completely bonded with the metallographic specimen, cooling, taking out the metallographic specimen after cooling, bonding the metallographic specimen with the embedding material at the moment, separating a layer of stainless steel tinfoil between the metallographic specimen and the embedding material, melting the stainless steel tinfoil with the surface of the metallographic specimen after heating, therefore, the surface of the metallographic specimen can not be attached to the mosaic material with softer texture, the hardness of the stainless steel tin paper is close to that of the metallographic specimen, therefore, the phenomena of rounding, embossing and the like caused by the difference of the soft and hard textures of the attached materials on the surface of the metallographic specimen during polishing and grinding can be avoided, and the observation effect and the observation accuracy of the metallographic specimen can be ensured.
The said mosaic material may be one of polyvinyl chloride, polystyrene and bakelite powder.
When the material is inlaid.
When selecting bakelite powder as the panel, it is distinguished with the metallographic specimen easily to the texture is harder, and the metallographic specimen is difficult to produce the chamfer when the bonding, and when selecting polyvinyl chloride or polystyrene as the panel, the corrosion resistance of metallographic specimen acid and alkali resistance after the bonding is better.
The mosaic mould is in a ring shape.
Metallographic specimen is convenient for inlay and be difficult to produce the corner when inlaying, and its shape sets up to the ring shape more, and inlays the mould and sets up to the shape of ring shape with the adaptation metallographic specimen to convenient processing.
The above example is only one of the preferred embodiments of the present invention, and general changes and substitutions by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention.
Claims (4)
1. A metallographic specimen embedding method is characterized by comprising the following steps: the method comprises the following steps:
preparing a metallographic specimen, self-adhesive stainless steel tin, an embedding material, an embedding mold, a mold top sealing cover and waterproof sand paper of 180#, 400#, 800#, 1200#, 2000 #;
cutting the self-adhesive stainless steel tin paper into corresponding sizes according to the size of the metallographic specimen, tearing off an anti-sticking film on the self-adhesive stainless steel tin paper, and sticking a glue layer downwards on the surface of the metallographic specimen;
thirdly, placing the metallographic specimen pasted with the self-adhesive stainless steel tinfoil layer into the center of the embedding mold, adding a certain amount of embedding material into the embedding mold, and pressing a top sealing cover of the mold on the filled bakelite powder for sealing;
step four, heating the metallographic sample in the embedded mold to 140 ℃, preserving heat for 8-15 minutes until the metallographic sample pasted with a layer of self-adhesive stainless steel tin paper is completely adhered with the embedding material, stopping heating, cooling, and taking out the metallographic sample adhered in the mold after complete cooling;
and fifthly, grinding the surfaces of the bonded metallographic samples step by using 2000#, 1200#, 800#, 400# and 180# waterproof sand paper respectively, then polishing the surfaces of the bonded metallographic samples, and finally carrying out metallographic observation on the surfaces.
2. The metallographic specimen embedding method according to claim 1, characterized in that: the hardness of the self-adhesive stainless steel tinfoil is close to that of a metal sample.
3. A metallographic sample embedding method according to claim 1 or 2, characterized in that: the setting material can be one of polyvinyl chloride, polystyrene and bakelite powder.
4. A metallographic sample embedding method according to claim 1 or 2, characterized in that: the embedding mould is in a ring shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010967057.4A CN112255074A (en) | 2020-09-15 | 2020-09-15 | Metallographic specimen embedding method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010967057.4A CN112255074A (en) | 2020-09-15 | 2020-09-15 | Metallographic specimen embedding method |
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| CN112255074A true CN112255074A (en) | 2021-01-22 |
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| CN202010967057.4A Pending CN112255074A (en) | 2020-09-15 | 2020-09-15 | Metallographic specimen embedding method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113155655A (en) * | 2021-03-25 | 2021-07-23 | 金川集团股份有限公司 | Method for measuring hardness value of high-temperature alloy metallurgy powder |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165791A (en) * | 2014-08-21 | 2014-11-26 | 厦门厦顺铝箔有限公司 | Ultrathin aluminum foil metallographic phase microscopic structure inspection method |
| CN105910856A (en) * | 2016-04-06 | 2016-08-31 | 哈尔滨飞机工业集团有限责任公司 | Preparation method for fine wire metallographic sample |
-
2020
- 2020-09-15 CN CN202010967057.4A patent/CN112255074A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165791A (en) * | 2014-08-21 | 2014-11-26 | 厦门厦顺铝箔有限公司 | Ultrathin aluminum foil metallographic phase microscopic structure inspection method |
| CN105910856A (en) * | 2016-04-06 | 2016-08-31 | 哈尔滨飞机工业集团有限责任公司 | Preparation method for fine wire metallographic sample |
Non-Patent Citations (1)
| Title |
|---|
| 苗壮等: "扫描电镜粉末样品的制备方法", 《钛工业进展》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113155655A (en) * | 2021-03-25 | 2021-07-23 | 金川集团股份有限公司 | Method for measuring hardness value of high-temperature alloy metallurgy powder |
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Application publication date: 20210122 |