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布氏硬度试验原理与检测方法 PowerPoint PPT Presentation


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布氏硬度试验原理与检测方法. 1. 硬度基本知识 2. 布氏硬度简介 3. 布氏硬度操作原理 4. 布氏硬度检测方法与技术条件 5. 布氏硬度的应用范围及优缺点。. 1. 硬度的基本知识. 1.1. 关于硬度的定义 : 硬度 , 目前尚无统一的表达方式,有人称 “ 是材料抵抗残余变形和反破坏的能力 ” ,也有人说 “ 是材料抵抗弹性变形,塑性变形或破坏的能力 ” ;总之,它既表明材料的弹性变形,也表明材料的塑性变形。

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布氏硬度试验原理与检测方法

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6918731

1.

2.

3.

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1.

1.1.

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1.2

1.

2.

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1.3


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2.


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3.

  • 3.1

  • 31


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3.2

HBW

HBS

Fkgf

smm

hmm2

Dmm

FN

dmm


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3.3


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32


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KKK


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dd0.24Dd0.6DKd<0.24DKd>0.6DK


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4.1

HBSHBW(1015s)

350HBW57505mm7.355kN(750kd)1015s3501015s

600HBW130201mm2942N(30kd)20 s600

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2~8s10~15s30s3560s

650HBW9.807N 29.42kN32


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XHB-3000,0.5CPULCD17HBWF/D2


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400


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HBX-0.52

HBC


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6.

1

(40m)

2

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b(MPa)3.4HB

b(MPa)1HB b(MPa) 0.6(HB-40)

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20X20X1X18


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1015s

30s3560s

8s15S

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31mm620.01mm3.62mm

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