CN102252888A - Preparation and tissue display method of ultralow carbon ultrathin cold heading steel wire metallographical sample - Google Patents
Preparation and tissue display method of ultralow carbon ultrathin cold heading steel wire metallographical sample Download PDFInfo
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Abstract
The invention relates to a preparation and tissue display method of an ultralow carbon ultrathin cold heading steel wire metallographical sample and belongs to the technical field of metallographical detection. The method comprises the process steps of inlaying, grinding, polishing and corroding test samples. The method has the advantage of solving the problem of difficulty in preparation and tissue detection of the ultralow carbon ultrathin cold heading steel wire metallographical sample, and is easy, effective and convenient to operate. By the method, the metallographical tissue of the ultralow carbon ultrathin cold heading steel wire can be detected and displayed clearly.
Description
Technical field
The invention belongs to metallographic detection technique field, preparation of the ultra-fine cold-heading wire metallographic sample of a kind of Ultra-low carbon and organization display method particularly are provided, be applicable to the metallographic sample preparation and the tissue detection of ultrafine wire after the drawing of Ultra-low carbon cold-forging steel gren rod.
Background technology
The main application of Ultra-low carbon cold-forging steel gren rod is welding wire and the zinc-coated wire goods that become to be used for electronic information and aviation, marine communication field by deep processing after drawing, the copper facing.Its gren rod should have good drawing and extension property, so its gren rod tissue should be based on thin ferrite.At present, the demonstration detection method of the corrosion of ultra-low-carbon steel austenite crystal and metallographic structure is relatively ripe, but the preparation of the metallographic sample of ultrafine wire and tissue show all the time relatively difficulty after the drawing of Ultra-low carbon cold-forging steel gren rod.So far, ripe metallographic sample preparation and the tissue detection method that is used for ultrafine wire after the drawing of Ultra-low carbon cold-forging steel gren rod do not appearred.
Summary of the invention
The object of the present invention is to provide ultra-fine cold-heading wire metallographic sample preparation of a kind of Ultra-low carbon and organization display method, be applicable to the ultra-fine (￠≤0.1mm) preparation of cold-heading wire metallographic sample and tissue demonstration of Ultra-low carbon (C≤0.02%), the clear preparation of energy also shows the ultra-fine cold-heading wire tissue of Ultra-low carbon, and easy to operate, can the ultra-fine cold-heading wire metallographic structure of effective clear demonstration Ultra-low carbon.
The present invention includes and comprise inlaying, grind, polish and corroding of sample; Because the specification ￠≤0.1mm of Ultra-low carbon cold-forging steel filament, the present invention divides horizontal sample and longitudinal test piece in the filament sample preparation, and the mosaic mode of the two is different, and the concrete steps that the preparation of sample and tissue show are:
Inlaying of a sample:
Inlaying of the horizontal sample of I: earlier filament is aligned gently, (10mm～20mm) sticks into a branch ofly with adhesive tape, with scissors filaments bundles one side is had one's hair trimmed, and a side of having one's hair trimmed vertically is put in the edge specimen chamber, inlays to shear the filament section of certain-length;
Inlaying of II longitudinal test piece: earlier filament is aligned gently, (10mm～20mm), one one parallel putting in the edge specimen chamber is inlayed to shear the filament section of certain-length;
Grinding of b sample: grind on carborundum paper inlaying good sample, water is cooked lubricant when grinding, and grinds.Sample is used earlier the 800# grit paper, behind mill 2～5min, cleans the back and then changes 1200# grit paper, 1500# grit paper and the pre-grinding of 2000# grit paper successively.Constantly observe the grinding state of specimen surface when grinding, the cut that guarantees abrasive surface is all in a direction;
The polishing of c sample: the sample after grinding cleans, and then carries out mechanical buffing on the polishing disk that with the silk is polishing cloth, and with emery atomizing brilliant polish, the polishing disk rotating speed is 900～1350 rev/mins during polishing.During polishing earlier with the brilliant polish of granularity 7 μ m, throw 2～5min after, the brilliant polish that then changes granularity 2.5 μ m, 1.5 μ m more successively polishes, till, the no marking bright and clean up to polished surface.
The corrosion of d sample: prepare copper sulphate aqueous hydrochloric acid solution (wherein copper sulphate is solid, is unit with g, and sulfuric acid and water are liquid, with ml unit) with 1: 5: 5 ratio, polished sample is corroded, etching time 5～10s, water flushing then dries up.
The present invention adopts pure manual meticulous grinding, choose suitable corrosive liquid then sample is organized demonstration, not only realized the preparation of the ultra-fine cold-heading wire metallographic sample of Ultra-low carbon, and successfully its tissue has been carried out clear demonstration, thereby can further study the structural state of the ultra-fine cold-heading wire of this Ultra-low carbon, this method is simply effective, has improved the means of metallographic sample preparation and fabric analysis.
Description of drawings
Fig. 1 is the ultra-fine SWRM6 steel wire of a Ultra-low carbon material object.
Fig. 2 is the horizontal metallographic structure of the ultra-fine SWRM6 steel wire of Ultra-low carbon.
Fig. 3 is the vertical metallographic structure of the ultra-fine SWRM6 steel wire of Ultra-low carbon.
Embodiment
Be applied in the metallographic structure analysis of the SWRM6 ultrafine wire of the present invention after drawing, SWRM6 wire rod carbon content is 0.006%, and specification is ￠ 0.08mm after user's drawing.
The concrete steps that SWRM6 ultrafine wire specimen preparation and tissue show are:
Inlaying of a sample:
Inlaying of the horizontal sample of I: earlier filament is aligned gently, sheared the filament section of certain-length, long 15mm sticks into a branch ofly with adhesive tape, with scissors filaments bundles one side is had one's hair trimmed, and a side of having one's hair trimmed vertically is put in inlays in the specimen chamber, inlays;
Inlaying of II longitudinal test piece: earlier filament is aligned gently, sheared the filament section of certain-length, long 15mm, one one parallel putting in the edge specimen chamber is inlayed;
Grinding of b sample: grind on carborundum paper inlaying good sample, water is cooked lubricant when grinding, and carries out craft and grinds.Sample is used earlier the 800# grit paper, behind the manual mill 3min, cleans the back and then changes 1200# grit paper, 1500# grit paper and the pre-grinding of 2000# grit paper successively.Constantly observe the grinding state of specimen surface when grinding, the cut that guarantees abrasive surface is all in a direction;
The polishing of c sample: the sample after grinding cleans, and then carries out mechanical buffing on the polishing disk that with the silk is polishing cloth, and with emery atomizing brilliant polish, the polishing disk rotating speed is 1200 rev/mins during polishing.During polishing earlier with the brilliant polish of granularity 7 μ m, throw 4min after, the brilliant polish that then changes granularity 2.5 μ m, 1.5 μ m more successively polishes, till, the no marking bright and clean up to polished surface.
The corrosion of d sample: prepare the copper sulphate aqueous hydrochloric acid solution with 1: 5: 5 ratio, be specially solid sulphuric acid copper 10g, hydrochloric acid 50ml, distilled water 50ml.Polished sample is corroded, etching time 10s, water flushing then dries up.
Laterally after the specimen preparation corrosion, as Fig. 2, be organized as ferrite, crystallite dimension 2.44 μ m, 14 grades of grain sizes.
After the longitudinal test piece preparation corrosion,, be organized as ferrite as Fig. 3, crystallite dimension 3.38 μ m, grain size is 13 grades.
Claims (1)
1. the ultra-fine cold-heading wire metallographic sample of Ultra-low carbon prepares and organization display method, comprises inlaying, grind, polish and corroding of sample; It is characterized in that:
Inlaying of a sample:
Horizontal inlaying of sample: earlier filament is aligned gently, sheared the filament section of 10mm～20mm length, stick into a branch ofly with adhesive tape, with scissors filaments bundles one side is had one's hair trimmed, a side of having one's hair trimmed vertically is put in the edge specimen chamber, inlays;
Inlaying of longitudinal test piece: earlier filament is aligned gently, sheared the filament section of 10mm～20mm length, one one parallel putting in the edge specimen chamber is inlayed;
Grinding of b sample:
Grind on carborundum paper inlaying good sample, water is cooked lubricant when grinding; Sample is used earlier the 800# grit paper, behind mill 2～5min, cleans the back and then changes 1200# grit paper, 1500# grit paper and the pre-grinding of 2000# grit paper successively; Constantly observe the grinding state of specimen surface when grinding, the cut that guarantees abrasive surface is all in a direction;
The polishing of c sample:
Sample after grinding cleans, and then carries out mechanical buffing on the polishing disk that with the silk is polishing cloth, and with emery atomizing brilliant polish, the polishing disk rotating speed is 900～1350 rev/mins during polishing; During polishing earlier with the brilliant polish of granularity 7 μ m, throw 2～5min after, the brilliant polish that then changes granularity 2.5 μ m, 1.5 μ m more successively polishes, till, the no marking bright and clean up to polished surface;
The corrosion of d sample:
Prepare the copper sulphate aqueous hydrochloric acid solution with 1: 5: 5 ratio, wherein copper sulphate is solid, is unit with g, and sulfuric acid and water are liquid, with ml unit; Polished sample is corroded, etching time 5～10s, water flushing then dries up.
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| CN102721593A (en) * | 2012-06-27 | 2012-10-10 | 北京科技大学 | Method for displaying original austenitic grain boundary of martensitic heat-resistant steel |
| CN102788748A (en) * | 2012-09-05 | 2012-11-21 | 天津钢铁集团有限公司 | Standard sample for analyzing 82B wire rod sorbite content and preparation method thereof |
| CN103398884A (en) * | 2013-07-30 | 2013-11-20 | 江苏法尔胜材料分析测试有限公司 | Hot embedding method for gold-phase sample preparation of thin steel wires |
| CN103743618A (en) * | 2013-09-10 | 2014-04-23 | 内蒙古科技大学 | Method for preparing solution by digesting low-carbon steel powder sample |
| CN103759993A (en) * | 2013-12-31 | 2014-04-30 | 广西玉柴机器股份有限公司 | Metallographic specimen preparation 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 |
| CN107860637A (en) * | 2017-11-09 | 2018-03-30 | 中国航发贵州黎阳航空动力有限公司 | A kind of preparation method of spring-like part metallographic specimen |
| CN109708937A (en) * | 2018-12-28 | 2019-05-03 | 南京钢铁股份有限公司 | A kind of application diameter or thickness are less than the method for embedding of 2mm or less product |
| CN109746771A (en) * | 2019-02-14 | 2019-05-14 | 南京航空航天大学 | A kind of CsPbX3The polishing method of inorganic perovskite crystalline material |
| CN111024469A (en) * | 2019-12-25 | 2020-04-17 | 珠海格力电工有限公司 | Method for testing eccentricity of enameled wire |
| CN112461618A (en) * | 2019-09-09 | 2021-03-09 | 上海梅山钢铁股份有限公司 | Method for displaying metallographic structure of ultralow-carbon cold-rolled annealed interstitial-free steel plate |
| CN113670691A (en) * | 2021-08-18 | 2021-11-19 | 广东韶钢松山股份有限公司 | Ultra-low carbon cold heading steel ferrite grain boundary display method |
| CN115386879A (en) * | 2022-08-15 | 2022-11-25 | 武汉钢铁有限公司 | Corrosive agent and corrosion method for ultra-low carbon silicon steel |
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Cited By (19)
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| CN102721593A (en) * | 2012-06-27 | 2012-10-10 | 北京科技大学 | Method for displaying original austenitic grain boundary of martensitic heat-resistant steel |
| CN102788748A (en) * | 2012-09-05 | 2012-11-21 | 天津钢铁集团有限公司 | Standard sample for analyzing 82B wire rod sorbite content and preparation method thereof |
| CN102788748B (en) * | 2012-09-05 | 2016-02-10 | 天津钢铁集团有限公司 | The preparation method of 82B wire rod sorbite percentage analysis standard model |
| CN103398884A (en) * | 2013-07-30 | 2013-11-20 | 江苏法尔胜材料分析测试有限公司 | Hot embedding method for gold-phase sample preparation of thin steel wires |
| CN103743618A (en) * | 2013-09-10 | 2014-04-23 | 内蒙古科技大学 | Method for preparing solution by digesting low-carbon steel powder sample |
| CN103759993A (en) * | 2013-12-31 | 2014-04-30 | 广西玉柴机器股份有限公司 | Metallographic specimen preparation method |
| CN103759993B (en) * | 2013-12-31 | 2016-01-13 | 广西玉柴机器股份有限公司 | Metallographic specimen preparation method |
| CN105910856B (en) * | 2016-04-06 | 2018-08-24 | 哈尔滨飞机工业集团有限责任公司 | A kind of preparation method of fine wire metallographic specimen |
| 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 |
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| CN109708937B (en) * | 2018-12-28 | 2021-07-13 | 南京钢铁股份有限公司 | Inlaying method suitable for products with diameter or thickness smaller than 2mm |
| CN109746771A (en) * | 2019-02-14 | 2019-05-14 | 南京航空航天大学 | A kind of CsPbX3The polishing method of inorganic perovskite crystalline material |
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| CN111024469A (en) * | 2019-12-25 | 2020-04-17 | 珠海格力电工有限公司 | Method for testing eccentricity of enameled wire |
| CN113670691A (en) * | 2021-08-18 | 2021-11-19 | 广东韶钢松山股份有限公司 | Ultra-low carbon cold heading steel ferrite grain boundary display method |
| CN115386879A (en) * | 2022-08-15 | 2022-11-25 | 武汉钢铁有限公司 | Corrosive agent and corrosion method for ultra-low carbon silicon steel |
| CN115386879B (en) * | 2022-08-15 | 2023-11-28 | 武汉钢铁有限公司 | Corrosive agent for ultra-low carbon silicon steel and corrosion method |
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Address after: 100041 Shijingshan Road, Shijingshan District, Shijingshan District, Beijing Patentee after: Shougang Group Co. Ltd. Address before: 100041 Shijingshan Road, Shijingshan District, Shijingshan District, Beijing Patentee before: Capital Iron & Steel General Company |
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