冲击装置技术参览
异型冲击装置 | DC(D)/DL | D+15 | C | G | E(需进口) | |||||
冲击能量 | 11mJ | 11mJ | 2.7mJ | 90mJ | 11mJ | |||||
球头硬度: | 1600HV | 1600HV | 1600HV | 1600HV | 5000HV | |||||
冲击装置直径: | 20mm | 20mm | 20mm | 30mm | 20mm | |||||
试件最大硬度 | 940HV | 940HV | 1000HV | 650HB | 1200HV | |||||
试件表面平均粗糙度Ra: | 1.6μm | 1.6μm | 0.4μm | 6.3μm | 1.6μm | |||||
试件最小重量: | 大于5kg | 大于5kg | 大于1.5kg | 大于15kg | 大于5kg | |||||
试件最小厚度 | 5mm | 5mm | 1mm | 10mm | 5mm | |||||
球头压痕尺寸 | ||||||||||
硬度300HV时 | 压痕直径 | 0.54mm | 0.54mm | 0.38mm | 1.03mm | 0.54mm | ||||
硬度600HV时 | 压痕直径 | 0.54mm | 0.54mm | 0.32mm | 0.90mm | 0.54mm | ||||
硬度800HV时 | 压痕直径 | 0.35mm | 0.35mm | 0.35mm | -- | 0.35mm | ||||
冲击装置适用范围 | DC型测量孔或园柱筒内;DL型测量细长窄槽或孔 | D+15型测量沟槽或凹入的表面 | C型测量小轻薄部件及表面硬化层 | G型测量大厚重及表面较粗糙的铸锻件 | E型测量硬度极高材料 |
冲击装置测试范围表
材料 | 硬度制 | 冲击装置 | |||||
D/DC | D+15 | C | G | E | DL | ||
Steel and cast steel 钢和铸钢 | HRC | 17.9~68.5 | 19.3~67.9 | 20.0~69.5 | 22.4~70.7 | 20.6~68.2 | |
HRB | 59.6~99.6 | 47.7~99.9 | 37.0~99.9 | ||||
HRA | 59.1~85.8 | 61.7~88.0 | |||||
HB | 127~651 | 80~638 | 80~683 | 90~646 | 83~663 | 81~646 | |
HV | 83~976 | 80~937 | 80~996 | 84~1042 | 80~950 | ||
HS | 32.2~99.5 | 33.3~99.3 | 31.8~102.1 | 35.8~102.6 | 30.6~96.8 | ||
Steel锻钢 | HS | 32.2~99.5 | |||||
CWT、ST 合金工具钢 | HRC | 20.4~67.1 | 19.8~68.2 | 20.7~68.2 | 22.6~70.2 | ||
HV | 80~898 | 80~935 | 100~941 | 82~1009 | |||
Stainless steel 不锈钢 | HRB | 46.5~101.7 | |||||
HB | 85~655 | ||||||
HV | 85~802 | ||||||
GC. IRON 灰铸铁 | HRC | ||||||
HB | 93~334 | 92~326 | |||||
HV | |||||||
NC、IRON 球墨铸铁 | HRC | ||||||
HB | 131~387 | 127~364 | |||||
HV | |||||||
C.ALUM 铸铝合金 | HB | 19~164 | 23~210 | 32~168 | |||
HRB | 23.8~84.6 | 22.7~85.0 | 23.8~85.5 | ||||
BRASS 铜锌合金 | HB | 40~173 | |||||
HRB | 13.5~95.3 | ||||||
BRONZE铜锡(铝)合金 | HB | 60~290 | |||||
COPPER纯铜 | HB | 45~315 |
示值误差和示值重复性表
序号 | 冲击装置类型 | 标准里氏硬度块硬度值 | 示值误差 | 示值重复性 |
1 | D | 760±30HLD 530±40HLD | ±6 HLD ±10 HLD | 6 HLD 10 HLD |
2 | DC | 760±30HLDC 530±40HLDC | ±6 HLDC ±10 HLDC | 6 HLD 10 HLD |
3 | DL | 878±30HLDL 736±40HLDL | ±12 HLDL | 12 HLDL |
4 | D+15 | 766±30HLD+15 544±40HLD+15 | ±12 HLD+15 | 12 HLD+15 |
5 | G | 590±40HLG 500±40HLG | ±12 HLG | 12 HLG |
6 | E | 725±30HLE 508±40HLE | ±12 HLE | 12 HLE |
7 | C | 822±30HLC 590±40HLC | ±12 HLC | 12 HLC |
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