汽车用热镀锌板连续退火工艺

STEELROLLING199863Jun11998No13(,430080),;,THECONTINUOUSANNEALINGPROCESSOFTHEHOTGALVANIZINGSHEETFORAUTOMOBILESMaGuoheXiaoBai(WuhanIronandSteelDesignandResearchInstitute,430080)AbstractTheannealingprocessofhotgalvanizingbasesheetforautomobilesisdiscussedfromseveralaspectssuchastheproductionprocess,thetypicalannealingcycle,thecomparisonbetweendirectheatingmethodandindirectheatingmethodofannealingfurnace.Thealloyingannealingprocessofzinclayerisalsodescribed.Keywordshotgalvanizingsheet,annealingprocess:1997-8-15:,34,,[phone]-8782,,9s,,,1315mös,80%,,,,20mös,,,:51315mm24,(24),2,51315mm20mös,313,,,,,,,42%,,,,510mm,831,60150göm2(),,,,,,,,(,),,,,(Dr,n),,,,2211,,(CQ)(DQ)(DDQ)(EDDQ);,(1),,CQDQFH()DDQDDQ,,1700mm2030mm1700mmDDQ,DDQDDQ,,,,,(2)70,DDQ,Fe3C,35040023min,,450480,5005501012s,,DDQ(3),(IF),,IF(5010-6),TiNb,IF,DDQ,IFDQ,,,,(4),,IF,,1,IF,DQDDQ933:1:EDDQ,,212,,,;,,,,12134:;;;(SEALAS),,3:,(),,,,:;6080,,:,,,,8mgöm2(Ford),,,,,,,10041998.1a)-CQ;b)-DQ;c)-DDQ;d)-EDDQ;e)-BH2,,3311,,,-,()8%12%,,,,312,,450460500550,1012s,,,8%12%313:,,5m;,,,12m,,,,90%;;,,,,10143:2(+)+,,,1300,,014mm,,012mm,,,,,,950,,,,,,40ös,500630,,10ös,,,(15%30%),,5%,,,;,,,,,,,;;,1015MJöm3(),,,,,,,,,,,,,,,,4,,,,:(1)IF,DQIF(2)()();,(3)241998.