Qhov cuam tshuam ntawm Tempering Kub ntawm Kev Tswj Toughness hauv Fishplate Kub Kho
Vim li cas cov ntses yuav tsum tau tempered tom qab quenching thiab tsis siv ncaj qha?
Tom qab quenching, sab hauv cov qauv ntawm cov ntses daim hlau yog mas martensite, uas muaj siab hardness tab sis heev brittleness thiab tsis zoo cuam tshuam. Nyob rau lub sijhawm no, daim phiaj ntses yuav tawg me ntsis thiab tsis tuaj yeem hloov mus rau qhov siab -frequency loads thaum tsheb ciav hlau hla cov pob qij txha. Tempering decomposes martensite rau hauv tempered sorbite, txo ib nrab hardness thaum txhim kho toughness thiab plasticity. Tsis muaj tempering, ntses daim hlau muaj lub neej ua haujlwm luv luv thiab ua rau muaj kev nyab xeeb loj hauv thaj chaw sib koom.
Dab tsi cuam tshuam rau qhov kub thiab txias ntau dhau ntawm cov ntses phaj?
Qhov kub thiab txias dhau heev ua rau tsis txaus martensite decomposition, tawm hauv cov ntses phaj nrog siab brittleness thiab substandard cuam tshuam toughness, ua rau nws nkig tawg nyob rau hauv qis - kub ib puag ncig. Qhov kub thiab txias ntau dhau ua rau qhov poob qis hauv qhov tawv thiab lub zog ntawm cov ntses phaj, tsis tuaj yeem tiv taus lub tensile thiab shear loads ntawm hnyav- tsheb ciav hlau, ua rau cov yas deformation thiab lub qhov bolt qhov elongation thaum siv. Tsuas yog nyob rau hauv qhov ntsuas kub zoo tshaj plaws tuaj yeem ua tiav qhov sib npaug zoo tshaj plaws ntawm lub zog thiab lub zog kom ua tau raws li cov kev pabcuam kab.
Qhov kev xaiv ntawm tempering kub txawv li cas ntawm cov ntses daim hlau rau hnyav -haul thiab zoo tib yam - kab ceev?
Cov phaj ntses rau hnyav- cov kab tsheb thauj khoom hnyav dua thiab muaj kev cuam tshuam loj dua, yuav tsum muaj zog dua los tiv thaiv kev puas tsuaj. Yog li ntawd, qhov kub thiab txias yog me ntsis siab dua li qhov zoo tib yam - cov kab nrawm, ua rau cov qauv ruaj khov thiab txhim khu kev cuam tshuam zoo. Ntses daim hlau rau qhov zoo tib yam - cov kab nrawm muaj qhov yuav tsum tau muaj zog qis dua, thiab qhov kub thiab txias tuaj yeem txo kom tsim nyog kom khaws cov tawv tawv dua thiab txhim kho hnav tsis kam. Qhov kub ntawm qhov sib txawv ntawm ob hom kab feem ntau yog 50℃-80 degree, uas yuav tsum tau hloov kho raws li cov khoom siv qib.
Dab tsi yog qhov tsis zoo ua rau qhov tsis zoo ntawm qhov kub thiab txias tsis sib xws ua rau hauv cov phaj ntses?
Tsis zoo tempering kub uniformity ua rau tsis sib xws metallographic qauv nyob rau hauv ntau qhov chaw ntawm cov ntses phaj, uas ua rau ib tug "lub zos nkig thiab hauv zos mos" phenomenon. Cov khoom tawv tawv muaj qhov brittleness siab thiab ua rau tawg pib; softer qhov chaw yog nquag hnav thiab deformation. Qhov kev ua haujlwm tsis sib xws no ua rau muaj kev ntxhov siab rau qhov tsis muaj zog thaum lub phaj ntses yog kev ntxhov siab, ua rau kom qaug zog tawg. Tsis tas li ntawd, qhov kub tsis sib xws kuj ua rau warpage deformation ntawm cov ntses phaj, cuam tshuam rau qhov haum nrog cov tsheb ciav hlau thiab ntxiv cov kab mob sib koom ua ke.
Yuav ua li cas txiav txim ncaj qha seb cov ntses phaj tempering yog qhov tsim nyog los ntawm kev sim hardness ntawm -site?
Lub hardness ntawm ntses daim hlau yog tsis zoo correlated nrog tempering kub - qhov siab dua lub tempering kub, qhov qis hardness. Ntawm -site, Leeb hardness tester tuaj yeem siv los ntsuas qhov nyuaj ntawm cov haujlwm tseem ceeb xws li qhov chaw ua haujlwm thiab lub qhov ntsia hlau qhov npoo ntawm cov ntses phaj. Sib piv cov nqi ntsuas nrog cov qauv tsim, yog tias qhov hardness siab dhau lawm, nws qhia tau tias qhov kub thiab txias yog qhov tsawg dhau thiab qhov toughness tsis txaus; Yog tias qhov hardness tsawg dhau, nws qhia tau tias qhov kub thiab txias siab dhau lawm thiab lub zog tsis txaus . 3-5 cov ntsiab lus yuav tsum tau ntsuas rau txhua lub phaj ntses kom ntseeg tau tias qhov sib txawv hardness, uas tsis tsuas yog ua tau raws li tus qauv, tab sis kuj tsis muaj qhov pom tseeb dispersion, yog li qhov kub thiab txias tuaj yeem raug txiav txim ncaj qha kom tsim nyog.