自我國《GB/T230.1-2018金屬材料 洛氏硬度試驗 第1部分：試驗方法》 頒布以來陸續(xù)接到鋼鐵生產(chǎn)企業(yè)、第三方檢測機構咨詢對鍍錫板產(chǎn)品的硬度檢測問題。針對此類問題小編會陸續(xù)推出一些相關的標準和文章供廣大技術人員相互交流學習。為尊重原創(chuàng)及知識產(chǎn)權我們在文章*后做了相關參考文獻的描述，內(nèi)容涉及的**及知識產(chǎn)權本平臺不負責。今天給大家大家推送的是《ASTM A623M鍍錫薄板產(chǎn)品技術規(guī)范和一般要求附錄A.1》的翻譯稿件，不足之處請指正為盼。
A1. ROCKWELL HARDNESS TESTING OF TIN MILL PRODUCTS ［1］
鍍錫薄板產(chǎn)品洛氏硬度測試
(Mandatory Information)
(規(guī)范性附錄)
A1.1 Scope范圍
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.
本附件涵蓋了使用15TS和30TS標準進行洛氏表面硬度測試的鍍錫薄板產(chǎn)品的應用。測試應按照ASTM E18測試方法和ASTM A370中描述的方法進行，以下章節(jié)給出了例外情況。
A1.2 Anvil 測砧及壓頭
A1.2.1 All tests shall be made using the diamond spot anvil and a 1.588 mm hardened steel ball indenter.
所有測試應使用金剛石點砧和?1.588 mm淬火鋼球壓頭。
A1.3 Specimens 試樣
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:
試樣厚度-試驗方法E18表12中給出的建議不適用于鍍錫薄板產(chǎn)品的測試。使用的表面洛氏標尺應根據(jù)材料的公稱厚度確定，如下表所示:
|
Nominal sheet Thickness mm
薄板公稱厚度
|
Rockwell superficial Scale
表面洛氏標尺
|
Major Load,kgf
*大試驗力
|
|
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-試樣與金剛石點砧接觸的表面應平整、光滑、無污垢或表面不平整。必要時，兩個試樣表面都應打磨光滑，以去除可能影響試驗結果的表面不平整。在測試前，應將砂屑從樣品中除去。除非另有約定，否則不得從壓痕處的表面除去鍍錫層。
A1.4 Reports 試驗報告
A1.4.1 Number of Tests—The Rockwell scale value to be reported shall be the average of at least three impressions.
測試次數(shù)-洛氏硬度值應為至少三次試驗的平均值。
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.
硬度值換算-在15TS標尺上進行的轉換硬度測試可通過表A1.1轉換為30TS標尺。人們認識到，這種轉換僅是為了方便報告，而且這種轉換，特別是從薄和軟材料的測試中進行的轉換，這種轉換過程不是很準確，僅供參考。
圖1. 時代全自動洛氏硬度計TIMEH1110在軸承行業(yè)典型應用
TABLE A1.1 Conversion Table (Approximation) Rockwell Hardness Testing
表A1.1 換算表(近似)洛氏硬度試驗
|
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
