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硬度測量的圓形修正值表
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發(fā)布日期：[2012-02-14] 共閱[7747]次 |
不同硬度制加到測試結果的不同直徑部件的修正值 加到洛氏C，A及D的修正值 | 硬度 | | 凸柱表面直徑 | | | | 讀值 | 1/4 in | 3/8 in | 1/2 in | 5/8 in | 3/4 in | 7/8 in | 1 in | 1-1/4 in | 1-1/2 in | | | 6.4 mm | 10 mm | 13 mm | 16 mm | 19 mm | 22 mm | 25 mm | 32 mm | 38 mm | | 20 | 6.0 | 4.5 | 3.5 | 2.5 | 2.0 | 1.5 | 1.5 | 1.0 | 1.0 | | 25 | 5.5 | 4.0 | 3.0 | 2.5 | 2.0 | 1.5 | 1.0 | 1.0 | 1.0 | | 30 | 5.0 | 3.5 | 2.5 | 2.0 | 1.5 | 1.0 | 1.0 | 1.0 | 0.5 | | 35 | 4.0 | 3.0 | 2.0 | 1.5 | 1.5 | 1.0 | 1.0 | 0.5 | 0.5 | | 40 | 3.5 | 2.5 | 2.0 | 1.5 | 1.0 | 1.0 | 1.0 | 0.5 | 0.5 | | 45 | 3.0 | 2.0 | 1.5 | 1.0 | 1.0 | 1.0 | 0.5 | 0.5 | 0.5 | | 50 | 2.5 | 2.0 | 1.5 | 1.0 | 1.0 | 0.5 | 0.5 | 0.5 | 0.5 | | 55 | 2.0 | 1.5 | 1.0 | 1.0 | 0.5 | 0.5 | 0.5 | 0.5 | 0 | | 60 | 1.5 | 1.0 | 1.0 | 0.5 | 0.5 | 0.5 | 0.5 | 0 | 0 | | 65 | 1.5 | 1.0 | 1.0 | 0.5 | 0.5 | 0.5 | 0.5 | 0 | 0 | | 70 | 1.0 | 1.0 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0 | 0 | | 75 | 1.0 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0 | 0 | 0 | | 80 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0 | 0 | 0 | 0 | | 85 | 0.5 | 0.5 | 0.5 | 0 | 0 | 0 | 0 | 0 | 0 | | 90 | 0.5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | | 加到洛氏B，F(xiàn)及G的洛氏修正值 | | 硬度 | | 凸柱表面直徑 | | | | 讀值 | 1/4 in | 3/8 in | 1/2 in | 5/8 in | 3/4 in | 7/8 in | 1 in | | | | | 6.4 mm | 10mm | 13mm | 16 mm | 19 mm | 22 mm | 25 mm | | | | | | | | | | | | | | | 0 | 12.5 | 8.5 | 6.5 | 5.5 | 4.5 | 3.5 | 3.0 | | | | 10 | 12.0 | 8.0 | 6.0 | 5.0 | 4.0 | 3.5 | 3.0 | | | | 20 | 11.0 | 7.5 | 5.5 | 4.5 | 4.0 | 3.5 | 3.0 | | | | 30 | 10.0 | 6.5 | 5.0 | 4.5 | 3.5 | 3.0 | 2.5 | | | | 40 | 9.0 | 6.0 | 4.5 | 4.0 | 3.0 | 2.5 | 2.5 | | | | 50 | 8.0 | 5.5 | 4.0 | 3.5 | 3.0 | 2.5 | 2.0 | | | | 60 | 7.0 | 5.0 | 3.5 | 3.0 | 2.5 | 2.0 | 2.0 | | | | 70 | 6.0 | 4.0 | 3.0 | 2.5 | 2.0 | 2.0 | 1.5 | | | | 80 | 5.0 | 3.5 | 2.5 | 2.0 | 1.5 | 1.5 | 1.5 | | | | 90 | 4.0 | 3.0 | 2.0 | 1.5 | 1.5 | 1.5 | 1.0 | | | | 100 | 3.5 | 2.5 | 1.5 | 1.5 | 1.0 | 1.0 | 0.5 | | | 當測試圓柱型樣本時,測試的準確性將受升降螺絲的對準線，V型樣品臺，壓頭，表面拋光度及圓柱的直線度的嚴重影響。這些修正值是大概的數(shù)值并代表的是平均值，小到0.5。洛氏和表面洛氏值，還需要大量的實踐觀察。 北京時代新天科貿(mào)有限公司 ： |
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