Tom qab qhov induction hardened qhov chaw tau ua tiav cov txheej txheem quenching, cov khoom twg feem ntau raug tshuaj xyuas?

(1) Cov tsos zoo

Qhov zoo ntawm qhov quenched nto ntawm qhov chaw yuav tsum tsis txhob muaj qhov tsis xws luag xws li fusion, tawg, thiab lwm yam. Qhov feem ntau quenched nto yog tawm-dawb nrog dub (oxidized). Greyish dawb feem ntau qhia tias quenching kub siab dhau lawm; tag nrho cov xim dub lossis xiav ntawm qhov chaw feem ntau qhia tias qhov kub thiab txias tsis txaus. Lub zos melting thiab pom tseeb cov kab nrib pleb, avalanches, thiab fab tuaj yeem pom thaum kuaj pom. Cov tsos mob soj ntsuam tus nqi ntawm cov khoom tsim nyob rau hauv me me batch thiab batch yog 100%.

(2) Hardness

Rockwell hardness tester tuaj yeem siv rau kev soj ntsuam random. Tus nqi piv txwv yog txiav txim siab raws li qhov tseem ceeb ntawm cov khoom thiab cov txheej txheem kev ruaj ntseg, feem ntau 3% mus rau 10%, ntxiv los ntawm kev tshuaj xyuas cov ntaub ntawv lossis 100% cov ntaub ntawv tshuaj xyuas. Thaum lub sij hawm soj ntsuam cov ntaub ntawv, nws yog qhov zoo tshaj plaws rau cov neeg soj ntsuam los npaj cov txheej txheem hardness blocks sib txawv hardness rau kev sib piv, thiaj li los txhim kho qhov tseeb ntawm cov ntaub ntawv soj ntsuam. Nyob rau hauv cov txheej txheem automated ntau lawm, txoj kev soj ntsuam hardness ntau dua tau txais cov eddy tam sim no tester thiab lwm cov kab sib dhos los tshuaj xyuas ib daim.

(3) Hardened cheeb tsam

Rau ib nrab quenched qhov chaw, nws yog ib qhov tsim nyog los xyuas qhov loj thiab txoj hauj lwm ntawm qhov chaw quenched. Kev tsim cov khoom me me feem ntau siv tus pas ntsuas lossis ntsuas ntsuas, thiab cov kua qaub muaj zog kuj tuaj yeem siv los ua kom cov quenched nto kom nws tshwm dawb hardened cheeb tsam rau kev soj ntsuam. Txoj kev etching feem ntau yog siv rau kev hloov kho. Hauv kev tsim khoom loj, yog tias lub inductor lossis lub quenching tswj mechanism yog txhim khu kev qha, feem ntau tsuas yog random tshuaj xyuas, thiab tus nqi piv txwv yog 1% mus rau 3%.

(4) Qhov tob ntawm hardened txheej

Qhov tob ntawm txheej hardened yog tam sim no feem ntau soj ntsuam los ntawm kev txiav hardened qhov chaw los ntsuas qhov tob ntawm hardened txheej. Txog tam sim no, cov txheej txheem metallographic tau siv yav dhau los los ntsuas qhov tob ntawm txheej txheej hardened yav dhau los, thiab GB 5617-85 yuav raug coj los siv yav tom ntej los txiav txim siab nws qhov tob los ntawm kev ntsuas cov seem hardness ntawm txheej hardened. Kev tshuaj xyuas qhov tob ntawm txheej txheej hardened yuav tsum muaj kev puas tsuaj rau cov khoom. Yog li ntawd, ntxiv rau qhov tshwj xeeb thiab cov kev cai tshwj xeeb, tsuas yog kev soj ntsuam random feem ntau yog siv. Kev tsim khoom loj ntawm cov khoom me me tuaj yeem raug kuaj xyuas rau ib qho ntawm ib qho kev ua haujlwm lossis ib qho rau txhua qhov me me ntawm cov khoom ua haujlwm, thiab ib daim rau cov khoom loj tuaj yeem kuaj xyuas txhua lub hlis. Thaum siv cov cuab yeej ntsuas tsis zoo, cov qauv ntsuas tuaj yeem nce ntxiv, thiab txawm tias 100% tuaj yeem siv tau. Piv txwv li, yog tias qhov chaw ntawm lub workpiece tso cai rau Leeb hardness tester rau indent, ces nws tuaj yeem raug kuaj xyuas ib thooj nrog Leeb hardness tester.

(5) Deformation thiab deflection

Deformation thiab deflection feem ntau yog siv los xyuas cov ncej. Feem ntau, lub hauv paus ncej thiab lub ntsuas dial yog siv los ntsuas qhov sib txawv ntawm lub viav vias lossis deflection ntawm cov khoom tom qab quenching. Qhov sib txawv pendulum sib txawv raws qhov ntev thiab nam piv ntawm ib feem. Lub induction hardened ib feem yuav ncaj, thiab nws deflection yuav loj me ntsis. Feem ntau, qhov tso cai pendulum sib txawv yog cuam tshuam nrog kev sib tsoo tom qab quenching. Qhov me me ntawm qhov sib tsoo, qhov me dua qhov tso cai pendulum sib txawv. Txoj kab uas hla sib tsoo ntawm cov ncej dav dav feem ntau yog 0.4 ~ 1mm. Qhov sib txawv ntawm lub pendulum tom qab cov khoom raug tso cai kom ncaj yog 0.15 ~ 0.3 hli.

(6) Kev tawg

Qhov tseem ceeb tshaj qhov yuav tsum tau kuaj xyuas los ntawm kev soj ntsuam cov khoom sib nqus tom qab quenching, thiab cov chaw tsim khoom nrog cov cuab yeej zoo dua tau siv phosphors los qhia cov kab nrib pleb. Cov khoom uas tau raug tshuaj xyuas magnetically yuav tsum tau demagnetized ua ntej xa mus rau cov txheej txheem tom ntej.