CN104991039A - 一种合金化镀锌层粉化性能评价方法 - Google Patents
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000011701 zinc Substances 0.000 title claims abstract description 14
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 13
- 238000000227 grinding Methods 0.000 title abstract 4
- 239000011247 coating layer Substances 0.000 title abstract 3
- 239000002245 particle Substances 0.000 claims abstract description 14
- 239000000843 powder Substances 0.000 claims abstract description 12
- 238000006253 efflorescence Methods 0.000 claims description 14
- 206010037844 rash Diseases 0.000 claims description 14
- 239000002390 adhesive tape Substances 0.000 claims description 11
- 238000005275 alloying Methods 0.000 claims description 11
- 238000011156 evaluation Methods 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 5
- 238000002474 experimental method Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 230000011218 segmentation Effects 0.000 claims description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 239000010937 tungsten Substances 0.000 claims description 3
- 238000004506 ultrasonic cleaning Methods 0.000 claims description 3
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- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 208000016261 weight loss Diseases 0.000 description 4
- 230000004580 weight loss Effects 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000003556 assay Methods 0.000 description 2
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- 238000011158 quantitative evaluation Methods 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
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Abstract
一种合金化镀锌层粉化性能的定量评价分析方法,属于镀锌层性能评价技术领域。具体工艺步骤:取样、制样、扫描电镜观察粉化颗粒面积百分比测试。优点在于:将目测方法进行了定量比较,用面积百分比为依据进行粉化性能的定量评价,同时也得到了粉化颗粒脱落情况分布图。
Description
技术领域
本发明属于镀锌层性能评价技术领域,特别涉及一种合金化镀锌层粉化性能评价方法。
背景技术
合金化热镀锌板的镀层结构复杂,从内向外依次是Γ相、Γ1相、δ1p相、δ1k相和ζ相,各相的铁含量依次降低。虽然各相有着相对固定的化学式,但由于铁、锌的扩散程度在各相中不一样,合金化的程度也有差异,因此各相的铁含量都会有所波动,一般存在一个范围。粉化主要是指合金化镀锌层在成形时镀层内部的脆性破坏,主要表现为成型过程中Fe-Zn合金粉末状或小颗粒状从镀层上形成并剥离,其尺寸一般小于镀层厚度。目前国内对镀层粉化性能的评价方法有失重法和透明胶带粘贴比色法。失重法是以镀层脱落的多少(即失重量)来定量或者定性的评价镀层粉化的程度,透明胶带粘贴法是成型过程中变形最严重的区域用透明胶带粘贴下来粉化颗粒后贴到白色纸上,目测粉化带宽度和颜色深浅来比较的。此两种方法只适合粉化量大和粉化差距较大的试样。失重法只能用精密电子秤进行测量,所以试样大小受限制,从而带来粉化量差距不大,无法精确评价分析粉化情况。比色法也只能分辨粉化差距较大的试样,目测误差对评价结果的影响很大。目前还没有获得更准确、科学的量化评价粉化结果的方法。
发明内容
本发明的目的在于提供一种合金化镀锌层粉化性能评价方法,解决了量化评价合金化镀锌层粉化性能的问题。
一种合金化镀锌层粉化性能评价方法,具体工艺步骤及参数如下:
1)取样:V弯曲实验最严重的弯曲内侧面用3M牌子透明胶粘贴下粉化颗粒物;
2)制样:在超声波清洗后的20mm×20mm薄钢片上粘贴一层白色双面胶,不把白色纸撕掉,再贴一层双面胶,把纸撕下,粘上粉化测试胶带,再进行喷碳处理,喷碳处理为较厚喷碳处理;
3)扫描电镜观察:用钨灯丝扫描电镜背散射像观察试样,保证试样与物镜的距离9~11mm,观察倍数为20倍,采集照片时衬度明显并且统一,采集3~5张图片;
4)粉化颗粒面积百分比测试:采用Sisc IAS金相分析软件进行阈值分割和面积百分比的统计。对采集好的图片百分含量平均得到每个试样粉化颗粒面积百分比并进行比较评价。
本发明的优点在于:将目测方法进行了定量比较,用面积百分比为依据进行粉化性能的定量评价,同时也得到了粉化颗粒脱落情况分布图。
附图说明
图1为1#试样图。
图2为2#试样图。
具体实施方式
实施例1
两种工艺下生产的DX54D+Z合金化热镀锌板(编号为1#和2#)用V弯曲实验做粉化性能评价实验。
1)取样:V弯曲实验最严重的弯曲内侧面用3M牌子透明胶粘贴下粉化颗粒物。
2)制样:在超声波清洗干净的20mm×20mm薄钢片上粘贴一层白色双面胶,不把白色纸撕掉,再贴一层双面胶,把纸撕下,粘上粉化测试胶带,再进行较厚喷碳处理。
3)扫描电镜观察:用钨灯丝扫描电镜背散射像观察试样,保证试样与物镜的距离10mm,观察倍数为20倍,采集照片时衬度明显并且统一,采集3张图片。
4)粉化颗粒面积百分比测试:采用Sisc IAS金相分析软件进行阈值分割和面积百分比的统计,再把3张图百分含量平均得到每个试样粉化颗粒面积百分比。
试样1#粉化颗粒物占被测面积的28%。2#试样为34%。数据表明2#试样粉化量比1#试样多,同时从分布图可以观察到1#试样粉化主要集中在变形量较大的小区域,,而2#试样粉化面积更大。这很明确的分析了合金化镀锌层的粉化程度。
Claims (1)
1.一种合金化镀锌层粉化性能评价方法,其特征在于,具体工艺步骤及参数如下:
1)取样:V弯曲实验最严重的弯曲内侧面用3M牌子透明胶粘贴下粉化颗粒物;
2)制样:在超声波清洗后的20mm×20mm薄钢片上粘贴一层白色双面胶,不把白色纸撕掉,再贴一层双面胶,把纸撕下,粘上粉化测试胶带,再进行喷碳处理;
3)扫描电镜观察:用钨灯丝扫描电镜背散射像观察试样,保证试样与物镜的距离9~11mm,观察倍数为20倍,采集照片时衬度明显并且统一,采集3~5张图片;
4)粉化颗粒面积百分比测试:采用Sisc IAS金相分析软件进行阈值分割和面积百分比的统计;对采集好的图片百分含量平均得到每个试样粉化颗粒面积百分比并进行比较评价。
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Cited By (3)
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CN106501120A (zh) * | 2016-10-27 | 2017-03-15 | 马钢(集团)控股有限公司 | 一种热镀锌合金化钢板粉化的快速检测方法 |
CN111965298A (zh) * | 2020-08-17 | 2020-11-20 | 江苏嘉耐高温材料股份有限公司 | 一种棕刚玉抗粉化性能检测方法 |
CN112903680A (zh) * | 2021-01-26 | 2021-06-04 | 广西柳钢华创科技研发有限公司 | 一种定量评价钢筋表面氧化铁皮完整度的方法 |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106501120A (zh) * | 2016-10-27 | 2017-03-15 | 马钢(集团)控股有限公司 | 一种热镀锌合金化钢板粉化的快速检测方法 |
CN106501120B (zh) * | 2016-10-27 | 2019-04-09 | 马钢(集团)控股有限公司 | 一种热镀锌合金化钢板粉化的快速检测方法 |
CN111965298A (zh) * | 2020-08-17 | 2020-11-20 | 江苏嘉耐高温材料股份有限公司 | 一种棕刚玉抗粉化性能检测方法 |
CN111965298B (zh) * | 2020-08-17 | 2022-05-27 | 江苏嘉耐高温材料股份有限公司 | 一种棕刚玉抗粉化性能检测方法 |
CN112903680A (zh) * | 2021-01-26 | 2021-06-04 | 广西柳钢华创科技研发有限公司 | 一种定量评价钢筋表面氧化铁皮完整度的方法 |
CN112903680B (zh) * | 2021-01-26 | 2023-10-03 | 广西柳钢华创科技研发有限公司 | 一种定量评价钢筋表面氧化铁皮完整度的方法 |
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