Pankhani ya zitsulo zosagwira kutentha, tiyenera kutchula makampani opangira kutentha; pankhani ya kutentha, tiyenera kulankhula za moto wa mafakitale atatu, kuyatsa, kuzimitsa, ndi kutentha. Ndiye pali kusiyana kotani pakati pa atatuwa?
(Mmodzi). Mitundu ya annealing
1. Kuwotchera kwathunthu ndi kutenthetsa kwapakati
Complete annealing imatchedwanso recrystallization annealing, yomwe nthawi zambiri imatchedwa annealing. Kuphatikizika uku kumagwiritsidwa ntchito makamaka popanga, zopanga ndi ma profiles otenthetsera amitundu yosiyanasiyana ya carbon steels ndi alloy steels okhala ndi nyimbo za hypoeutectoid, ndipo nthawi zina amagwiritsidwa ntchito popanga ma welded. Nthawi zambiri amagwiritsidwa ntchito ngati chithandizo chomaliza cha kutentha kwa zida zina zosafunikira, kapena ngati chithandizo cha kutentha chisanadze kwa zida zina.
2. spheroidizing annealing
Spheroidizing annealing imagwiritsidwa ntchito makamaka pa hypereutectoid carbon steel ndi alloy tool zitsulo (monga mitundu yachitsulo yomwe imagwiritsidwa ntchito popanga zida zodulira, zida zoyezera, ndi nkhungu). Cholinga chake chachikulu ndikuchepetsa kuuma, kukonza machinability, ndikukonzekera kuzimitsa kotsatira.
3.Kuchepetsa kupsinjika maganizo
Kuchepetsa kupsinjika kumatchedwanso kutsika kwa kutentha (kapena kutentha kwambiri). Mtundu uwu wa annealing umagwiritsidwa ntchito makamaka kuthetsa kupsinjika kotsalira mu castings, forgings, kuwotcherera mbali, otentha adagulung'undisa mbali, ozizira-koka mbali zina, ndi zina zotero. nthawi ina kapena panthawi yodula.
(Awiri). Kuzimitsa
Njira zazikulu zomwe zimagwiritsidwa ntchito pofuna kukonza kuuma ndi kutentha, kuteteza kutentha, ndi kuzizira mofulumira. Njira zoziziritsira zomwe zimagwiritsidwa ntchito kwambiri ndi brine, madzi ndi mafuta. The workpiece kuzimitsidwa m'madzi mchere n'zosavuta kupeza mkulu kuuma ndi yosalala pamwamba, ndipo si sachedwa mawanga zofewa kuti si kuzimitsidwa, koma n'zosavuta chifukwa kwambiri mapindikidwe workpiece ndi ngakhale akulimbana. Kugwiritsa ntchito mafuta monga sing'anga kuzimitsira ndi oyenera kuzimitsa zitsulo zina aloyi kapena yaing'ono kakulidwe carbon zitsulo workpieces kumene kukhazikika kwa supercooled austenite ndi yaikulu.
(Atatu). Kutentha
1. Kuchepetsa brittleness ndi kuthetsa kapena kuchepetsa nkhawa mkati. Pambuyo kuzimitsa, zigawo zachitsulo zidzakhala ndi kupsyinjika kwakukulu kwa mkati ndi brittleness. Ngati sizikupsya nthawi, mbali zachitsulo nthawi zambiri zimapunduka kapena kusweka.
2. Pezani zofunika makina katundu wa workpiece. Pambuyo kuzimitsa, workpiece ndi mkulu kuuma ndi mkulu brittleness. Kuti mukwaniritse zofunikira zosiyanasiyana zamagulu osiyanasiyana ogwirira ntchito, kuuma kumatha kusinthidwa mwa kutenthetsa koyenera, kuchepetsa brittleness ndikupeza kulimba kofunikira. Pulasitiki.
3. Khola workpiece kukula
4. Kwa zitsulo zina za alloy zomwe zimakhala zovuta kufewetsa ndi annealing, kutentha kwapamwamba kwambiri kumagwiritsidwa ntchito pambuyo pozimitsa (kapena normalizing) kuti asonkhanitse bwino carbides muzitsulo ndi kuchepetsa kuuma kuti athandize kudula.
Nthawi yotumiza: Apr-10-2024