1. HRA

* Kev sim thiab txoj cai:

-HRA hardness test siv lub pob zeb diamond cone indenter, nias rau hauv cov khoom nto hauv qab 60 kg load. Tus nqi hardness yog txiav txim los ntawm kev ntsuas qhov tob ntawm indentation.

* Yam khoom siv tau:

-Mainly haum rau cov ntaub ntawv nyuaj heev, xws li cemented carbides, nyias hlau, thiab tawv coatings.

* Cov Ntawv Thov Kev Sib Tham:

-Kev tswj xyuas kom zoo thiab kev sim hardness ntawm cov cuab yeej cemented carbide, suav nrogkhoom carbide twist xyaum.

- Kev sim hardness ntawm cov txheej tawv tawv thiab kev kho saum npoo.

-Cov ntawv thov kev lag luam uas muaj cov ntaub ntawv nyuaj heev.

* Nta thiab qhov zoo:

-Suitable for Very Hard Materials: HRA scale yog tshwj xeeb tshaj yog haum rau kev ntsuas qhov hardness ntawm cov ntaub ntawv nyuaj heev, muab cov qhabnias xeem.

-High Precision: Lub pob zeb diamond cone indenter muab kev ntsuas meej thiab zoo ib yam.

-High Repeatability: Txoj kev kuaj xyuas kom ruaj khov thiab rov ua tau.

* Kev txiav txim siab lossis kev txwv:

-Sample Preparation: Cov qauv saum npoo yuav tsum du thiab huv si kom ntseeg tau tias cov txiaj ntsig raug.

-Txoj Kev Kho Cov Khoom Siv: Kev ntsuas tsis tu ncua thiab kev saib xyuas cov cuab yeej ntsuas yog tsim nyog los xyuas kom meej qhov tseeb thiab kev ntseeg tau.

2. HRB

* Kev sim thiab txoj cai:

HRB hardness test siv 1/16 nti steel pob indenter, nias rau hauv cov khoom nto hauv qab 100 kg load. Tus nqi hardness yog txiav txim los ntawm kev ntsuas qhov tob ntawm indentation.

* Yam khoom siv tau:

-Mainly haum rau softer hlau, xws li txhuas, tooj liab, thiab softer steels.

* Cov Ntawv Thov Kev Sib Tham:

-Kev tswj xyuas zoo thiab kev sim hardness ntawm cov hlau tsis muaj hlau thiab cov khoom muag muag muag.

- Kev sim hardness ntawm cov khoom yas.

- Cov khoom siv kuaj hauv ntau cov txheej txheem tsim khoom.

* Nta thiab qhov zoo:

-Suitable rau Soft Metals: HRB scale yog tshwj xeeb tshaj yog haum rau ntsuas qhov hardness ntawm softer hlau, muab cov kev ntsuam xyuas raug.

-Moderate Load: Siv lub nra nruab nrab (100 kg) kom tsis txhob muaj ntau dhau ntawm cov khoom muag.

-High Repeatability: Lub pob steel indenter muab cov txiaj ntsig kev xeem ruaj khov thiab rov ua dua.

* Kev txiav txim siab lossis kev txwv:

-Sample Preparation: Cov qauv saum npoo yuav tsum du thiab huv si kom ntseeg tau tias cov txiaj ntsig raug.

-Material Limitation: Tsis haum rau cov ntaub ntawv nyuaj heev, xws likhoom carbide twist xyaum, raws li lub pob steel indenter tuaj yeem raug puas los yog tsim cov txiaj ntsig tsis raug.

-Txoj Kev Kho Cov Khoom Siv: Kev ntsuas tsis tu ncua thiab kev saib xyuas cov cuab yeej ntsuas yog tsim nyog los xyuas kom meej qhov tseeb thiab kev ntseeg tau.

1. 3.HRC

* Kev sim thiab txoj cai:

-HRC hardness test siv lub pob zeb diamond cone indenter, nias rau hauv cov khoom nto hauv qab 150 kg load. Tus nqi hardness yog txiav txim los ntawm kev ntsuas qhov tob ntawm indentation.

* Yam khoom siv tau:

-Mainly haum rau harder steels thiab hard alloys.

* Cov Ntawv Thov Kev Sib Tham:

-Quality tswj thiab hardness kuaj ntawm hardened steels, xws likhoom carbide twist xyaumthiab cov cuab yeej steel.

- Kev sim hardness ntawm hardness castings thiab forgings.

-Cov ntawv thov kev lag luam nrog cov ntaub ntawv nyuaj.

* Nta thiab qhov zoo:

-Suitable rau Hard Materials: HRC nplai yog tshwj xeeb tshaj yog haum rau kev ntsuas lub hardness ntawm hard steels thiab alloys, muab cov kev ntsuam xyuas raug.

-High Load: Siv lub nra hnyav dua (150 kg), haum rau cov khoom siv tawv dua.

-High Repeatability: Lub pob zeb diamond cone indenter muab cov qhab nia ruaj khov thiab rov ua dua.

* Kev txiav txim siab lossis kev txwv:

-Sample Preparation: Cov qauv saum npoo yuav tsum du thiab huv si kom ntseeg tau tias cov txiaj ntsig raug.

-Material Limitation: Tsis haum rau cov ntaub ntawv mos heev vim tias cov load ntau dua tuaj yeem ua rau muaj kev cuam tshuam ntau dhau.

-Txoj Kev Kho Cov Khoom Siv: Kev ntsuas tsis tu ncua thiab kev saib xyuas cov cuab yeej ntsuas yog tsim nyog los xyuas kom meej qhov tseeb thiab kev ntseeg tau.

4. HRD

* Kev sim thiab txoj cai:

-HRD hardness test siv lub pob zeb diamond cone indenter, nias rau hauv cov khoom nto hauv qab 100 kg load. Tus nqi hardness yog txiav txim los ntawm kev ntsuas qhov tob ntawm indentation.

* Yam khoom siv tau:

-Mainly haum rau cov hlau tawv thiab tawv alloys.

* Cov Ntawv Thov Kev Sib Tham:

- Kev tswj kom zoo thiab kev sim hardness ntawm cov hlau tawv thiab alloys.

- Kev sim hardness ntawm cov cuab yeej thiab cov khoom siv tshuab.

-Cov ntawv thov kev lag luam nrog cov ntaub ntawv nyuaj.

* Nta thiab qhov zoo:

-Suitable rau Hard Materials: HRD nplai yog tshwj xeeb tshaj yog haum rau ntsuas qhov hardness ntawm cov hlau tawv thiab alloys, muab cov txiaj ntsig zoo.

-High Precision: Lub pob zeb diamond cone indenter muab kev ntsuas meej thiab zoo ib yam.

-High Repeatability: Txoj kev kuaj xyuas kom ruaj khov thiab rov ua tau.

* Kev txiav txim siab lossis kev txwv:

-Sample Preparation: Cov qauv saum npoo yuav tsum du thiab huv si kom ntseeg tau tias cov txiaj ntsig raug.

-Material Limitation: Tsis haum rau cov ntaub ntawv mos heev vim tias cov load ntau dua tuaj yeem ua rau muaj kev cuam tshuam ntau dhau.

-Txoj Kev Kho Cov Khoom Siv: Kev ntsuas tsis tu ncua thiab kev saib xyuas cov cuab yeej ntsuas yog tsim nyog los xyuas kom meej qhov tseeb thiab kev ntseeg tau.

5. HHH

* Kev sim thiab txoj cai:

HRH hardness test siv 1/8 nti steel pob indenter, nias rau hauv cov khoom nto hauv qab 60 kg load. Tus nqi hardness yog txiav txim los ntawm kev ntsuas qhov tob ntawm indentation.

* Yam khoom siv tau:

-Mainly haum rau softer hlau cov ntaub ntawv, xws li txhuas, tooj liab, txhuas alloys, thiab tej yam uas tsis yog-ferrous hlau.

* Cov Ntawv Thov Kev Sib Tham:

- Kev tswj kom zoo thiab kev sim hardness ntawm lub teeb hlau thiab alloys.

-Hardness kuaj ntawm cam khwb cia txhuas thiab tuag-cast qhov chaw.

- Cov khoom siv hauv kev lag luam hluav taws xob thiab hluav taws xob.

* Nta thiab qhov zoo:

-Suitable rau Soft Materials: HRH scale yog tshwj xeeb tshaj yog haum rau ntsuas qhov hardness ntawm softer hlau cov ntaub ntawv, muab cov kev ntsuam xyuas raug.

-Lower Load: Siv lub load qis (60 kg) kom tsis txhob muaj ntau dhau ntawm cov khoom muag.

-High Repeatability: Lub pob steel indenter muab cov txiaj ntsig kev xeem ruaj khov thiab rov ua dua.

* Kev txiav txim siab lossis kev txwv:

-Sample Preparation: Cov qauv saum npoo yuav tsum du thiab huv si kom ntseeg tau tias cov txiaj ntsig raug.

-Material Limitation: Tsis haum rau cov ntaub ntawv nyuaj heev, xws likhoom carbide twist xyaum, raws li lub pob steel indenter tuaj yeem raug puas los yog tsim cov txiaj ntsig tsis raug.

-Txoj Kev Kho Cov Khoom Siv: Kev ntsuas tsis tu ncua thiab kev saib xyuas cov cuab yeej ntsuas yog tsim nyog los xyuas kom meej qhov tseeb thiab kev ntseeg tau.

6. HRK

* Kev sim thiab txoj cai:

HRK hardness test siv 1/8 nti steel pob indenter, nias rau hauv cov khoom nto hauv qab 150 kg load. Tus nqi hardness yog txiav txim los ntawm kev ntsuas qhov tob ntawm indentation.

* Yam khoom siv tau:

-Mainly haum rau nruab nrab-nyuaj mus rau harder hlau cov ntaub ntawv, xws li tej yam steels, cam khwb cia hlau, thiab nyuaj alloys.

* Cov Ntawv Thov Kev Sib Tham:

- Kev tswj kom zoo thiab kev sim hardness ntawm steel thiab cam khwb cia hlau.

- Kev sim hardness ntawm cov cuab yeej thiab cov khoom siv tshuab.

-Industrial daim ntawv thov rau nruab nrab mus rau siab hardness cov ntaub ntawv.

* Nta thiab qhov zoo:

-Wide Applicability: HRK scale yog haum rau nruab nrab-nyuaj mus rau harder cov ntaub ntawv hlau, muab cov kev ntsuam xyuas raug.

-High Load: Siv lub nra hnyav dua (150 kg), haum rau cov khoom siv tawv dua.

-High Repeatability: Lub pob steel indenter muab cov txiaj ntsig kev xeem ruaj khov thiab rov ua dua.

* Kev txiav txim siab lossis kev txwv:

-Sample Preparation: Cov qauv saum npoo yuav tsum du thiab huv si kom ntseeg tau tias cov txiaj ntsig raug.

-Material Limitation: Tsis haum rau cov ntaub ntawv mos heev vim tias cov load ntau dua tuaj yeem ua rau muaj kev cuam tshuam ntau dhau.

-Txoj Kev Kho Cov Khoom Siv: Kev ntsuas tsis tu ncua thiab kev saib xyuas cov cuab yeej ntsuas yog tsim nyog los xyuas kom meej qhov tseeb thiab kev ntseeg tau.

7. HRL

* Kev sim thiab txoj cai:

-HRL hardness test siv 1/4 nti steel pob indenter, nias rau hauv cov khoom nto hauv qab 60 kg load. Tus nqi hardness yog txiav txim los ntawm kev ntsuas qhov tob ntawm indentation.

* Yam khoom siv tau:

-Mainly haum rau softer hlau cov ntaub ntawv thiab tej yam yas, xws li txhuas, tooj liab, txhuas alloys, thiab tej yam tsawg hardness yas ntaub ntawv.

* Cov Ntawv Thov Kev Sib Tham:

- Kev tswj kom zoo thiab kev sim hardness ntawm lub teeb hlau thiab alloys.

-Hardness kuaj cov khoom yas thiab qhov chaw.

- Cov khoom siv hauv kev lag luam hluav taws xob thiab hluav taws xob.

* Nta thiab qhov zoo:

-Suitable rau Soft Materials: HRL scale yog tshwj xeeb tshaj yog haum rau ntsuas qhov hardness ntawm softer hlau thiab yas cov ntaub ntawv, muab cov kev ntsuam xyuas raug.

-Low Load: Siv lub load qis (60 kg) kom tsis txhob muaj ntau dhau ntawm cov khoom muag.

-High Repeatability: Lub pob steel indenter muab cov txiaj ntsig kev xeem ruaj khov thiab rov ua dua.

* Kev txiav txim siab lossis kev txwv:

-Sample Preparation: Cov qauv saum npoo yuav tsum du thiab huv si kom ntseeg tau tias cov txiaj ntsig raug.

-Material Limitation: Tsis haum rau cov ntaub ntawv nyuaj heev, xws likhoom carbide twist xyaum, raws li lub pob steel indenter tuaj yeem raug puas los yog tsim cov txiaj ntsig tsis raug.

-Txoj Kev Kho Cov Khoom Siv: Kev ntsuas tsis tu ncua thiab kev saib xyuas cov cuab yeej ntsuas yog tsim nyog los xyuas kom meej qhov tseeb thiab kev ntseeg tau.

8. HWM

* Kev sim thiab txoj cai:

-HRM hardness test siv 1/4 nti steel pob indenter, nias rau hauv cov khoom nto hauv qab 100 kg load. Tus nqi hardness yog txiav txim los ntawm kev ntsuas qhov tob ntawm indentation.

* Yam khoom siv tau:

-Mainly haum rau nruab nrab-nyuaj hlau cov ntaub ntawv thiab tej yam yas, xws li txhuas, tooj liab, txhuas alloys, thiab nruab nrab hardness yas ntaub ntawv.

* Cov Ntawv Thov Kev Sib Tham:

-Kev tswj kom zoo thiab kev sim hardness ntawm lub teeb rau nruab nrab hardness hlau thiab alloys.

-Hardness kuaj cov khoom yas thiab qhov chaw.

- Cov khoom siv hauv kev lag luam hluav taws xob thiab hluav taws xob.

* Nta thiab qhov zoo:

-Suitable rau Medium-Hard Materials: HRM scale yog tshwj xeeb tshaj yog haum rau ntsuas qhov hardness ntawm medium-hard hlau thiab cov ntaub ntawv yas, muab cov kev xeem raug.

-Moderate Load: Siv lub nra nruab nrab (100 kg) kom tsis txhob muaj ntau dhau ntawm cov khoom nruab nrab.

-High Repeatability: Lub pob steel indenter muab cov txiaj ntsig kev xeem ruaj khov thiab rov ua dua.

* Kev txiav txim siab lossis kev txwv:

-Sample Preparation: Cov qauv saum npoo yuav tsum du thiab huv si kom ntseeg tau tias cov txiaj ntsig raug.

-Material Limitation: Tsis haum rau cov ntaub ntawv nyuaj heev, xws likhoom carbide twist xyaum, raws li lub pob steel indenter tuaj yeem raug puas los yog tsim cov txiaj ntsig tsis raug.

-Txoj Kev Kho Cov Khoom Siv: Kev ntsuas tsis tu ncua thiab kev saib xyuas cov cuab yeej ntsuas yog tsim nyog los xyuas kom meej qhov tseeb thiab kev ntseeg tau.

9. HRR

* Kev sim thiab txoj cai:

-HRR hardness test siv 1/2 nti steel pob indenter, nias rau hauv cov khoom nto hauv qab 60 kg load. Tus nqi hardness yog txiav txim los ntawm kev ntsuas qhov tob ntawm indentation.

* Yam khoom siv tau:

-Mainly haum rau softer hlau cov ntaub ntawv thiab tej yam yas, xws li txhuas, tooj liab, txhuas alloys, thiab qis hardness cov ntaub ntawv yas.

* Cov Ntawv Thov Kev Sib Tham:

- Kev tswj kom zoo thiab kev sim hardness ntawm lub teeb hlau thiab alloys.

-Hardness kuaj cov khoom yas thiab qhov chaw.

- Cov khoom siv hauv kev lag luam hluav taws xob thiab hluav taws xob.

* Nta thiab qhov zoo:

-Suitable rau Soft Materials: HRR scale yog tshwj xeeb tshaj yog haum rau ntsuas qhov hardness ntawm softer hlau thiab yas cov ntaub ntawv, muab cov kev ntsuam xyuas raug.

-Lower Load: Siv lub load qis (60 kg) kom tsis txhob muaj ntau dhau ntawm cov khoom muag.

-High Repeatability: Lub pob steel indenter muab cov txiaj ntsig kev xeem ruaj khov thiab rov ua dua.

* Kev txiav txim siab lossis kev txwv:

-Sample Preparation: Cov qauv saum npoo yuav tsum du thiab huv si kom ntseeg tau tias cov txiaj ntsig raug.

-Material Limitation: Tsis haum rau cov ntaub ntawv nyuaj heev, xws likhoom carbide twist xyaum, raws li lub pob steel indenter tuaj yeem raug puas los yog tsim cov txiaj ntsig tsis raug.

-Txoj Kev Kho Cov Khoom Siv: Kev ntsuas tsis tu ncua thiab kev saib xyuas cov cuab yeej ntsuas yog tsim nyog los xyuas kom meej qhov tseeb thiab kev ntseeg tau.

10. HRG

* Kev sim thiab txoj cai:

HRG hardness test siv 1/2 nti steel pob indenter, nias rau hauv cov khoom nto hauv qab 150 kg load. Tus nqi hardness yog txiav txim los ntawm kev ntsuas qhov tob ntawm indentation.

* Yam khoom siv tau:

-Mainly haum rau cov ntaub ntawv nyuaj hlau, xws li tej yam steels, cam khwb cia hlau, thiab nyuaj alloys.

* Cov Ntawv Thov Kev Sib Tham:

- Kev tswj kom zoo thiab kev sim hardness ntawm steel thiab cam khwb cia hlau.

-Hardness kuaj cov cuab yeej thiab cov khoom siv tshuab, suav nrogkhoom carbide twist xyaum.

-Industrial daim ntawv thov rau cov ntaub ntawv hardness siab dua.

* Nta thiab qhov zoo:

-Wide Applicability: HRG nplai yog tsim rau cov khoom siv hlau nyuaj, muab cov txiaj ntsig zoo.

-High Load: Siv lub nra hnyav dua (150 kg), haum rau cov khoom siv tawv dua.

-High Repeatability: Lub pob steel indenter muab cov txiaj ntsig kev xeem ruaj khov thiab rov ua dua.

* Kev txiav txim siab lossis kev txwv:

-Sample Preparation: Cov qauv saum npoo yuav tsum du thiab huv si kom ntseeg tau tias cov txiaj ntsig raug.

-Material Limitation: Tsis haum rau cov ntaub ntawv mos heev vim tias cov load ntau dua tuaj yeem ua rau muaj kev cuam tshuam ntau dhau.

-Txoj Kev Kho Cov Khoom Siv: Kev ntsuas tsis tu ncua thiab kev saib xyuas cov cuab yeej ntsuas yog tsim nyog los xyuas kom meej qhov tseeb thiab kev ntseeg tau.

Xaus

Rockwell hardness scales encompass ntau txoj hauv kev rau kev sim qhov hardness ntawm cov khoom sib txawv, los ntawm mos heev mus rau nyuaj heev. Txhua qhov ntsuas siv sib txawv indenters thiab loads los ntsuas qhov tob ntawm qhov indentation, muab cov txiaj ntsig raug thiab rov ua tau zoo tsim nyog rau kev tswj xyuas zoo, kev tsim khoom, thiab kev sim khoom thoob plaws ntau yam kev lag luam. Kev tu cov cuab yeej siv tsis tu ncua thiab kev npaj cov qauv tsim nyog yog qhov tseem ceeb rau kev ua kom ntseeg tau tias kev ntsuas hardness. Piv txwv li,khoom carbide twist xyaum, uas feem ntau nyuaj heev, yog qhov zoo tshaj plaws kev sim siv HRA los yog HRC nplai kom paub meej meej thiab zoo ib yam kev ntsuas hardness.

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