Thaum tuag casting ntau lawm, feem ntau hom kev pwm puas yog tawg thiab tawg. Kev nyuab siab yog qhov tseem ceeb ntawm pwm kev puas tsuaj. Thermal, mechanical, tshuaj lom neeg, thiab ua hauj lwm kev tshee hnyav yog qhov chaw ntawm kev nyuab siab, nrog rau kev ua haujlwm thiab kev thermal, uas yog tsim los ntawm:
Hauv txheej txheem pwm tsim
1) Cov teeb meem zoo ntawm kev sib ntxub kev poob siab
Qee cov pwm tuaj yeem tsim cov kab nrawm thaum lawv raug tsim tawm hauv ob peb nplooj, thiab cov kab nrawm nrawm tsim. Nws yog qhov ua tau tsuas yog cov txheej txheem tsuas yog lub sij hawm forging, thiab cov xoob xws li dendrites, inclusions, shrinkage kab noj hniav, thiab npuas nyob hauv cov hlau muaj ncav thiab elongated raws txoj kev ua tus qauv kom tsim tau, thiab qhov kev hloov no rau lub yav tom ntej. Kev sib deev zaum kawg, rhuav tshem, txhav qhov puas siab thaum siv, thiab kev tsis ua haujlwm tsis zoo.
2) Txiav kev nyuaj siab thaum lub sij hawm ua tiav kawg xws li tig, milling, planing, thiab lwm yam., Uas yuav raug tshem tawm ntawm cov lus sib cais.
3) Kev sib tsoo kev ntxhov siab tshwm sim thaum lub sij hawm hardening ntawm steel, txhuam cua kub yog tsim thaum lub sij hawm sib tsoo, softening txheej thiab decarburization txheej yog generated, thermal qaug zog lub zog txo, thiab thermal cracking thiab thaum ntxov cracking yog yooj yim tshwm sim. Tom qab txoj kev sib tsoo ntawm h13 hlau, nws muaj peev xwm ua kom kub mus rau 510-570 ° C, thiab cov thickness yog tswj txhua 25 hli rau ib teev rau kev nyuab siab kev pab tiv thaiv.
4) EDM ua rau kev ntxhov siab. Qhov saum npoo ntawm pwm tsim tawm ib txheej dawb nplua nuj nyob hauv electrode ntsiab thiab dielectric ntsiab, uas yog nyuaj thiab nkig. Cov txheej txheem no nws muaj kab nrib pleb thiab kev nyuab siab. EDM yuav tsum siv lub sijhawm kom txo cov txheej dawb. Nws yuav tsum tau muab tshem tawm los ntawm kev txhuam thiab tempered. Qhov kub siab yog nqa tawm ntawm qhov kub siab txias.
2. Lub sijhawm ua pwm
Kev kho kom tsis muaj cua sov yuav ua rau lub puab pwm kom tawg thiab ua kom qis dua. Hauv particular, tsuas quenching thiab tempering, tsis quenching, thiab nitriding ntog yuav tshwm sim, thiab ntes tawg thiab ntes yuav tshwm sim tom qab ob peb txhiab tuag casting.
Qhov kev ntxhov siab ua thaum cov hlau tawm quas yog qhov tshwm sim ntawm qhov kev kub ntxhov thaum lub sijhawm txias thiab qhov kev ntxhov siab thaum hloov mus rau theem. Kev ntxhov siab quenching yog qhov ua rau deformation thiab tawg, thiab lub cev yuav tsum tau muab txo kom tshem tawm cov kev ntxhov siab.
