Hino Fuso Universal Tsheb Bolt

1, Spheroidizing annealing ntawm high-strength bolts

Thaum lub hexagon socket lub taub hau bolts yog tsim los ntawm cov txheej txheem txias taub hau, cov qauv qub ntawm cov hlau yuav ncaj qha cuam tshuam rau kev tsim muaj peev xwm thaum lub caij txias ua haujlwm. Yog li ntawd, cov hlau yuav tsum muaj plasticity zoo. Thaum cov tshuaj muaj pes tsawg leeg ntawm cov hlau tsis tu ncua, cov qauv metallographic yog qhov tseem ceeb ntawm kev txiav txim siab plasticity. Nws feem ntau ntseeg hais tias cov ntxhib flaky pearlite tsis haum rau kev sib sau txias, thaum lub ntsej muag zoo nkauj pearlite tuaj yeem txhim kho lub peev xwm ntawm cov yas deformation ntawm cov hlau.
Rau nruab nrab carbon steel thiab nruab nrab carbon alloy steel nrog ib tug loj npaum li cas ntawm cov high-strength fasteners, spheroidizing annealing yog ua ua ntej txias taub hau, thiaj li yuav tau uniform thiab nplua spheroidized pearlite kom zoo dua raws li qhov tseeb ntau lawm.

2 、 Shelling thiab descaling ntawm lub zog muaj zog bolts

Cov txheej txheem ntawm kev tshem cov hlau oxide phaj los ntawm lub taub hau txias steel hlau qws yog stripping thiab descaling. Muaj ob txoj hauv kev: mechanical descaling thiab chemical pickling. Hloov cov txheej txheem chemical pickling ntawm hlau pas nrig nrog txhua yam descaling txhim kho cov khoom tsim tau thiab txo cov pa phem ib puag ncig. Cov txheej txheem descaling no suav nrog txoj kev khoov, txoj kev txau, thiab lwm yam. Cov nyhuv descaling yog qhov zoo, tab sis cov hlau seem tsis tuaj yeem raug tshem tawm. Tshwj xeeb tshaj yog thaum cov nplai ntawm cov hlau oxide nplai muaj zog heev, yog li cov neeg kho tshuab descaling cuam tshuam los ntawm cov tuab ntawm cov hlau nplai, cov qauv thiab lub xeev kev ntxhov siab, thiab siv rau hauv cov pa roj carbon steel hlau rods rau qis zog fasteners. Tom qab txhua yam descaling, cov hlau pas nrig rau lub zog siab fasteners undergoes cov tshuaj pickling txheej txheem kom tshem tawm tag nrho cov hlau oxide nplai, uas yog, compound descaling. Rau qis carbon steel hlau rods, cov ntawv hlau sab laug los ntawm cov neeg kho tshuab descaling yog yuav ua rau tsis sib xws ntawm grain drafting. Thaum cov nplej pob zeb ua raws li cov ntawv hlau vim muaj kev sib txhuam ntawm cov hlau pas nrig thiab qhov kub ntawm sab nraud, qhov saum npoo ntawm cov hlau pas nrig ua rau cov kab ntev ntev.