自我国《GB/T230.1-2018金属材料 洛氏硬度试验 第1部分：试验方法》 颁布以来陆续接到钢铁生产企业、第三方检测机构咨询对镀锡板产品的硬度检测问题。针对此类问题小编会陆续推出一些相关的标准和文章供广大技术人员相互交流学习。为尊重原创及知识产权我们在文章*后做了相关参考文献的描述，内容涉及的**及知识产权本平台不负责。今天给大家大家推送的是《ASTM A623M镀锡薄板产品技术规范和一般要求附录A.1》的翻译稿件，不足之处请指正为盼。
A1. ROCKWELL HARDNESS TESTING OF TIN MILL PRODUCTS ［1］
镀锡薄板产品洛氏硬度测试
(Mandatory Information)
(规范性附录)
A1.1 Scope范围
A1.1.1 This annex covers the application to tin mill prod-ucts of Rockwell superficial hardness tests using the 15TS and 30TS scales. Tests shall be made in accordance with themethods outlined in Test Methods E18 and Test Methods and Definitions A370 with the exceptions given in the following sections.
本附件涵盖了使用15TS和30TS标准进行洛氏表面硬度测试的镀锡薄板产品的应用。测试应按照ASTM E18测试方法和ASTM A370中描述的方法进行，以下章节给出了例外情况。
A1.2 Anvil 测砧及压头
A1.2.1 All tests shall be made using the diamond spot anvil and a 1.588 mm hardened steel ball indenter.
所有测试应使用金刚石点砧和ø1.588 mm淬火钢球压头。
A1.3 Specimens 试样
A1.3.1 Thickness—The recommendations given in Table 12 of Test Methods E18 shall not apply to tests on tin mill products. The Rockwell superficial scale to be used shall be determined from the nominal thickness of the material as given in the following table:
试样厚度-试验方法E18表12中给出的建议不适用于镀锡薄板产品的测试。使用的表面洛氏标尺应根据材料的公称厚度确定，如下表所示:
|
Nominal sheet Thickness mm
薄板公称厚度
|
Rockwell superficial Scale
表面洛氏标尺
|
Major Load,kgf
*大试验力
|
|
0.212 和更薄的
|
15TS
|
15
|
|
0.547-0.213
|
30TS
|
30
|
A1.3.2 Surface Finish—The surface of the specimen in contact with the diamond spot anvil shall be flat, smooth, and free from dirt or surface irregularities. When necessary, both specimen surfaces shall be sanded smooth to remove surface irregularities that may affect the test results. Sanding debris shall be removed from the sample before testing. Unless otherwise agreed upon, the tin coating shall not be removed from the surface on which the indentation is made.
表面粗糙度-试样与金刚石点砧接触的表面应平整、光滑、无污垢或表面不平整。必要时，两个试样表面都应打磨光滑，以去除可能影响试验结果的表面不平整。在测试前，应将砂屑从样品中除去。除非另有约定，否则不得从压痕处的表面除去镀锡层。
A1.4 Reports 试验报告
A1.4.1 Number of Tests—The Rockwell scale value to be reported shall be the average of at least three impressions.
测试次数-洛氏硬度值应为至少三次试验的平均值。
A1.4.2 Conversion—Hardness tests made on the 15TS scale may be converted to the 30TS scale by the use of Table A1.1. It is recognized that such conversions are for convenience in reporting and that conversion, particularly from tests on thin and soft materials, is not an accurate process.
硬度值换算-在15TS标尺上进行的转换硬度测试可通过表A1.1转换为30TS标尺。人们认识到，这种转换仅是为了方便报告，而且这种转换，特别是从薄和软材料的测试中进行的转换，这种转换过程不是很准确，仅供参考。
图1. 时代全自动洛氏硬度计TIMEH1110在轴承行业典型应用
TABLE A1.1 Conversion Table (Approximation) Rockwell Hardness Testing
表A1.1 换算表(近似)洛氏硬度试验
|
HR30TS
|
HR15TS
|
HR30TS
|
HR15TS
|
|
82.0
|
93.0
|
65.0
|
84.0
|
|
81.5
|
92.5
|
64.0
|
...
|
|
81.0
|
...
|
63.5
|
83.5
|
|
80.5
|
92.0
|
62.5
|
83.0
|
|
80.0
|
...
|
62.0
|
...
|
|
79.0
|
91.5
|
61.5
|
82.5
|
|
78.5
|
...
|
60.5
|
82.0
|
|
78.0
|
91.0
|
60.0
|
...
|
|
77.5
|
90.5
|
59.5
|
81.5
|
|
77.0
|
...
|
58.5
|
81.0
|
|
76.0
|
90.0
|
58.0
|
...
|
|
75.5
|
89.5
|
57.0
|
80.5
|
|
75.0
|
...
|
56.5
|
...
|
|
74.5
|
89.0
|
56.0
|
80.0
|
|
74.0
|
88.5
|
55.0
|
79.5
|
|
73.5
|
...
|
54.5
|
...
|
|
73.0
|
88.0
|
54.0
|
79.0
|
|
72.0
|
87.5
|
530.0
|
78.5
|
|
71.5
|
...
|
52.5
|
...
|
|
71.0
|
87.0
|
51.5
|
78.0
|
|
70.0
|
86.5
|
51.0
|
77.5
|
|
69.5
|
...
|
50.5
|
...
|
|
69.0
|
86.0
|
49.5
|
77.0
|
|
68.0
|
85.5
|
49.0
|
76.5
|
|
67.5
|
...
|
48.5
|
...
|
|
67.0
|
85.0
|
47.5
|
76.0
|
|
66.0
|
...
|
47.0
|
75.5
|
|
65.5
|
84.5
|
46.0
|
...
|
［1］ Standard Specification for Tin Mill Products, General Requirements [Metric]. ASTM A623, 2016.A.1
