brinell hardness

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1、勃氏硬度試驗　(BRINELLHARDNESSTEST)一、目的：巨觀硬度二、設備：勃氏硬度試驗機圖1勃氏硬度試驗機圖2計測顯微鏡三.原理:1.硬度試驗對試片和壓痕位置的規定:※D=壓痕直徑,T=壓痕深度鋼球2.勃氏硬度試驗原理:※壓痕直徑3.硬度數據求法:　　2P(1)代入公式:HB={pD[D-√(D2－D2)]}　其中:P:已知D:10MM(或5MM)D=?(由計測顯微鏡量出)※荷重(P)選擇依據:D=0.2~0.6D(即D=2~6MM)(2)查表(表1):最常用表１　勃氏硬度表BRINELL硬度數(鋼球直徑10MM)壓痕直徑MMHB壓

2、痕直徑MMHB壓痕直徑MMHB壓痕直徑MMHB壓痕直徑MMHB500KGF3000KGF500KGF3000KGF500KGF3000KGF500KGF3000KGF500KGF3000KGF2.002.052.102.152.202.252.302.352.402.452.502.552.602.652.702.752.802.852.902.9515815014313613012411911410910410096.392.689.085.782.679.676.874.171.594589985681778074571268265362

3、76015785555345144954774614444293.003.053.103.153.203.253.303.353.403.453.503.553.603.653.703.753.803.853.903.9569.166.864.662.560.558.656.855.153.451.850.348.947.546.144.943.642.441.340.239.14154013883753633523413313213113022932852772692622552482412354.004.054.104.154.204.2

4、54.304.354.404.454.504.554.604.654.704.754.804.854.904.9538.137.136.235.334.433.632.832.031.230.529.829.128.427.827.126.525.925.424.824.32292232172122072011971921871831791741701671631591561521491465.005.055.105.155.205.255.305.355.405.455.505.555.605.655.705.755.805.855.905

5、.9523.823.322.822.321.821.420.920.520.119.719.318.918.618.217.817.517.216.816.516.214314013713413112812612312111811611411110910710510310199.297.36.006.056.106.156.206.256.306.356.406.456.506.556.606.656.706.756.806.856.906.9515.915.615.315.114.814.514.214.013.713.513.313.01

6、2.812.612.412.111.911.711.511.395.593.792.090.388.787.185.584.082.581.079.678.276.875.474.172.871.670.469.268.0BRINELL硬度數(鋼球直徑10MM)壓痕直徑MMHB壓痕直徑MMHB壓痕直徑MMHB壓痕直徑MMHB壓痕直徑MMHB1000KGF1500KGF1000KGF1500KGF1000KGF1500KGF1000KGF1500KGF1000KGF1500KGF2.002.052.102.152.202.252.302.352

7、.402.452.502.552.602.652.702.752.802.852.902.953153002852722602482372272182092001931851781711651591541481434734504284083903723563413273133012892782672572482392302222153.003.053.103.153.203.253.303.353.403.453.503.553.603.653.703.753.803.853.903.95138134129125121117114110107

8、10410197.794.992.389.787.284.982.680.478.32072001941881821761701651601561511471421