Yuav ua li cas xaiv lub hardness tester rau kev kuaj tubular kuaj?

1) Puas tuaj yeem siv Rockwell hardness tester los ntsuas qhov tawv ntawm cov yeeb nkab phab ntsa?

Cov khoom siv xeem yog SA-213M T22 steel yeeb nkab nrog ib txoj kab uas hla ntawm 16 hli thiab phab ntsa tuab ntawm 1.65 hli. Qhov kev ntsuam xyuas ntawm Rockwell hardness test yog raws li hauv qab no: Tom qab tshem tawm cov oxide nplai thiab decarburization txheej ntawm cov qauv nrog lub grinder, cov qauv muab tso rau ntawm V-shaped workbench, thiab HRS-150S digital Rockwell hardness tester yog siv los kuaj ncaj qha rau Rockwell hardness ntawm nws sab nrauv nrog lub nra ntawm 980.7N. Tom qab qhov kev sim, nws tuaj yeem pom tias cov yeeb nkab steel phab ntsa muaj qhov deformation me ntsis, thiab qhov tshwm sim yog tias Rockwell hardness tus nqi ntsuas qis dhau, ua rau qhov kev xeem tsis raug.

Raws li GB / T 230.1-2018 «Cov Khoom Siv Hlau Rockwell Hardness Test Part 1: Test Method», Rockwell hardness yog 80HRBW thiab qhov tsawg kawg nkaus qauv thickness yog 1.5mm. Lub thickness ntawm tus qauv No. Thaum lub sij hawm xeem, vim tias tsis muaj kev txhawb nqa hauv nruab nrab ntawm cov qauv, nws yuav ua rau me ntsis deformation (uas yuav tsis pom los ntawm qhov muag liab qab), yog li qhov tseeb Rockwell hardness tus nqi qis.

2) Yuav ua li cas xaiv tus nto hardness tester rau steel kav:

Tom qab ntau qhov kev ntsuam xyuas ntawm qhov nyuaj ntawm cov kav dej steel, peb lub tuam txhab tau tuaj rau cov lus xaus hauv qab no:

1. Thaum ua cov txheej txheem Rockwell hardness test los yog Rockwell hardness test rau saum npoo ntawm nyias-walled steel kav, kev txhawb nqa tsis txaus ntawm cov yeeb nkab phab ntsa yuav ua rau deformation ntawm cov qauv thiab ua rau cov txiaj ntsig qis;

2. Yog tias qhov kev txhawb nqa cylindrical ntxiv rau hauv nruab nrab ntawm cov yeeb nkab nyias nyias, cov txiaj ntsig kev ntsuas yuav qis vim tias lub axis ntawm lub taub hau siab thiab cov kev taw qhia ntawm kev thauj khoom tsis tuaj yeem ua kom ntseeg tau tias yog perpendicular mus rau saum npoo ntawm cov yeeb nkab steel, thiab muaj qhov sib txawv ntawm sab nrauv ntawm cov yeeb nkab steel thiab cov cylindrical txhawb nqa.

3. Cov txheej txheem ntawm kev hloov cov ntsuas Vickers hardness rau Rockwell hardness tom qab inlaying thiab polishing cov qauv steel yeeb nkab yog qhov tseeb.

4. Tom qab tshem tawm cov nplais oxide thiab decarburization txheej ntawm cov yeeb nkab steel thiab machining qhov kev sim dav hlau nyob rau sab nrauv thiab muab tso rau hauv nws, qhov chaw Rockwell hardness hloov mus rau Rockwell hardness, uas yog qhov tseeb.