Yuav ua li cas xaiv lub tshuab ntsuas qhov nyuaj rau kev sim cov qauv duab tubular

1) Puas siv tau Rockwell hardness tester los ntsuas qhov nyuaj ntawm phab ntsa yeeb nkab hlau?

Cov khoom siv kuaj yog SA-213M T22 steel yeeb nkab nrog lub cheeb sab nraud ntawm 16 hli thiab phab ntsa tuab ntawm 1.65 hli. Cov txiaj ntsig ntawm kev kuaj ntawm Rockwell hardness tester yog raws li nram no: Tom qab tshem tawm cov oxide thiab decarburized txheej ntawm qhov chaw kuaj nrog lub grinder, cov qauv tau muab tso rau ntawm lub rooj ua haujlwm V-puab thiab kev xeem Rockwell hardness tau ua ncaj qha rau ntawm nws qhov chaw sab nraud, siv HRS-150S digital zaub Rockwell hardness tester ntawm qhov thauj khoom: 980.7N.

Tom qab qhov kev sim, nws tuaj yeem pom tias cov yeeb nkab hlau ntawm phab ntsa muaj qhov deformation me ntsis, thiab qhov tshwm sim yog: tus nqi qis ntsuas ntawm Rockwell hardness ua rau qhov kev sim tsis raug.

Raws li GB/T 230.1-2018 « Rockwell Hardness test for metallic materials Part 1: Test methods », Rockwell hardness yog 80HRBW thiab qhov tsawg kawg nkaus tuab ntawm cov qauv yog 1.5 hli. Qhov tuab ntawm cov qauv No.1 yog 1.65 hli, qhov tuab ntawm cov txheej decarburized yog 0.15 ~ 0.20 hli, thiab qhov tuab ntawm cov qauv tom qab tshem cov txheej decarburized yog 1.4 ~ 1.45 hli, uas ze rau qhov tsawg kawg nkaus tuab ntawm cov qauv teev tseg hauv GB/T 230.1-2018.

Thaum lub sijhawm kuaj, vim tias qhov chaw kuaj tsis txhawb nqa, nws yuav ua rau muaj qhov tsis pom tseeb (tej zaum yuav tsis pom qhov muag liab qab), yog li qhov ntsuas Rockwell hardness qis heev.

2) Yuav ua li cas xaiv cov khoom sab nraudRockwellhardness tester rau kev sim cov kav hlau：

Peb lub tuam txhab tau sim ntau zaus qhov nyuaj ntawm cov yeeb nkab hlau thiab tau mus txog cov lus xaus hauv qab no：

Kev sim qhov nyuaj ntawm Rockwell saum npoo lossis kev sim qhov nyuaj ntawm Rockwell rau ntawm qhov chaw ntawm cov yeeb nkab hlau nyias nyias. Kev txhawb nqa phab ntsa tsis txaus yuav ua rau cov qauv deformation thiab ua rau cov txiaj ntsig xeem qis;

Yog tias muab lub cylindrical support tso rau hauv nruab nrab ntawm lub raj hlau nyias nyias, vim nws tsis tuaj yeem ua kom ntseeg tau tias lub indenter axis thiab load loading direction thiab qhov chaw ntawm cov yeeb nkab hlau perpendicular rau qhov chaw, thiab qhov chaw sab nraud ntawm cov yeeb nkab hlau thiab qhov ntawd yuav ua rau muaj qhov sib txawv ntawm qhov sib txawv ntawm qhov chaw voj voog ntawm cov yeeb nkab hlau thiab qhov chaw cylindrical support, kuj yuav ua rau qhov tshwm sim ntawm kev sim qis heev.

Tom qab txhuam cov yeeb nkab steel sampling inset, hloov Vickers hardness testing mus rau Rockwell hardness testing, yuav tau txais tus nqi Rockwell hardness raug heev.

2. Tom qab tshem tawm cov oxide thiab decarburization txheej ntawm qhov chaw ntawm cov yeeb nkab hlau thiab machining lub dav hlau xeem ntawm qhov chaw sab nraud thiab inlaying nws, Tus nqi yog qhov tseeb dua piv rau Superficial Rockwell hardness tester nrog Rockwell hardness tester.