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Alloy Steel Pipes Hardness Test Methods Thiab Cov Cuab Yeej
- Kev ntsuas tensile yog ua kom cov kav hlau alloy rau hauv cov qauv, rub cov qauv kom tawg ntawm lub tshuab ntsuas tensile, thiab tom qab ntawd ntsuas ib lossis ntau lub zog. Feem ntau tsuas yog lub zog tensile, lub zog tawm los, elongation tom qab tawg thiab tawg cheeb tsam raug ntsuas. Lub shrinkage. Tensile xeem yog cov cuab yeej cuab tam sim cov txheej txheem rau cov kav hlau alloy. Yuav luag txhua cov yeeb nkab steel hlau yuav tsum muaj kev ntsuas tensile ntev npaum li lawv muaj kev xav tau rau cov khoom siv kho tshuab. Tshwj xeeb tshaj yog rau cov yeeb nkab steel hlau uas nws cov duab tsis yooj yim rau kev sim hardness, kev ntsuas tensile tau dhau los ua tib txoj kev ntsuas cov khoom siv tshuab.
- Cov hlau yeeb nkab hardness test yog maj mam nias ib qho nyuaj indenter rau saum npoo ntawm cov qauv raws li cov xwm txheej tau teev tseg, thiab tom qab ntawd sim ntsuas qhov tob lossis qhov loj los txiav txim siab qhov nyuaj ntawm cov yeeb nkab steel hlau. Hardness test yog ib qho yooj yim, ceev thiab yooj yim-rau-ua txoj hauv kev kuaj cov cuab yeej cuab tam ntawm alloy steel kav. Qhov kev sim hardness yog tsis muaj kev puas tsuaj, thiab muaj kev sib raug zoo ntawm kev sib raug zoo ntawm tus nqi hardness thiab lub zog tensile tus nqi ntawm cov yeeb nkab steel hlau. Tus nqi hardness ntawm alloy steel yeeb nkab tuaj yeem hloov mus rau lub zog tensile tus nqi, uas yog qhov tseem ceeb tshaj plaws.
- Txij li thaum qhov kev sim tensile tsis yooj yim rau kev sim thiab nws yooj yim los hloov hardness rau lub zog, tib neeg tab tom nce kev sim tsuas yog hardness ntawm alloy steel kav thiab tsawg dua lawv lub zog. Tshwj xeeb tshaj yog vim qhov kev nce qib tas mus li thiab kev tsim kho tshiab ntawm hardness tester manufacturing technology, tam sim no tau ncaj qha mus kuaj qhov hardness ntawm qee cov hlau alloy steel kav uas yav tas los tsis tuaj yeem kuaj ncaj qha rau hardness. Yog li ntawd, muaj qhov sib txawv uas qhov kev sim hardness maj mam hloov qhov kev sim tensile.
- Feem ntau ntawm cov qauv hauv teb chaws rau cov kav hlau alloy tau teev tseg ob qho kev sim tensile thiab hardness test. Rau cov yeeb nkab steel hlau uas tsis yooj yim rau kev sim hardness, xws li alloy steel kav, tsuas yog ntsuas tensile yog teev.
- Rau annealed 16mn seamless steel kav nrog ib txoj kab uas hla ntawm saum toj no 6. Qhov kev ntsuam xyuas yog ceev heev thiab yooj yim, thiab yog haum rau kev soj ntsuam ceev thiab tsis muaj kev puas tsuaj ntawm alloy steel kav. Seamless steel kav nrog ib txoj kab uas hla ntawm alloy steel kav ntau dua 30mm thiab phab ntsa thickness ntau dua 1.2 hli yog kuaj rau HRB thiab HRC hardness siv lub Rockwell hardness tester. Seamless steel kav nrog ib txoj kab uas hla ntawm alloy steel kav ntau dua 30 hli thiab phab ntsa thickness tsawg dua 1.2 hli yog kuaj rau HRT los yog HRN hardness siv ib tug nto Rockwell hardness tester. Rau seamless steel kav nrog ib txoj kab uas hla sab hauv tsawg dua 0mm thiab ntau dua 4.8mm, siv lub Rockwell hardness tester tshwj xeeb rau cov kav dej los kuaj HR15T hardness. Thaum lub puab txoj kab uas hla ntawm cov hlau alloy steel yeeb nkab yog ntau tshaj 26 hli, lub hardness ntawm lub puab phab ntsa ntawm lub alloy steel yeeb nkab kuj yuav raug kuaj nrog ib tug Rockwell los yog nto Rockwell hardness tester.
