Other Hardening Methods
Several different methods can be used to harden metals. Let’s discuss three major hardening approaches besides induction hardening, flame, furnace, and vacuum hardening.
The Furnace hardening process involves heating of workpiece into a heat treatment furnace in a controlled environment. The workpiece is heated until austenite transforms, after which a quick quenching occurs.
The furnace hardening cannot heat the workpiece as uniformly as induction hardening does. It heats all workpiece portions, while induction hardening can heat specific workpiece sections. Induction is a go-to option if you need to harden a particular portion.
Vacuum hardening involves heating the workpiece by controlling the partial pressure, followed by a quick cooling process. It is often used for high-precision parts, as it can produce tough and consistent surfaces with minimal distortion.
Like the furnace hardening, it is also incapable of heating the workpiece at a specific region. The vacuum prevents the workpiece from reacting with atmospheric gases in the air, so the result is unaffected.
Flame hardening also involves the hardening of the outer surface using a flame while maintaining the ductility of the core section. The depth capability of flame hardening ranges up to 10 mm. This process is typically used to harden small or thin parts or to harden specific areas of a more significant piece.
Since induction hardening does not use an open heating approach like flame hardening, it is more precise and does not create overheating, scaling, or decarburization damage.
Mbinu Nyingine za Kufanya Vitu Vitu Vingine Njia kadhaa tofauti zaweza kutumiwa kufanya vitu vyenye chuma viwe vikali. Hebu kuzungumzia mbinu tatu kuu hardening mbali na induction hardening, moto, tanuru, na vacuum hardening. Furnace hardening mchakato inajumuisha joto ya workpiece katika tanuru matibabu ya joto katika mazingira kudhibitiwa. Workpiece ni joto mpaka austenite hubadilika, baada ya ambayo quenching haraka hutokea. Mvuke hardening hawezi joto workpiece kama usawa kama induction hardening hufanya. Ni heats sehemu zote workpiece, wakati induction hardening inaweza joto sehemu maalum workpiece. Induction ni go-kwa chaguo kama unahitaji kuimarisha sehemu fulani. Vacuum hardening inahusisha kupasha joto workpiece kwa kudhibiti shinikizo sehemu, ikifuatiwa na mchakato wa baridi ya haraka. Ni mara nyingi kutumika kwa sehemu ya usahihi wa juu, kama inaweza kuzalisha nyuso ngumu na thabiti na upotoshaji mdogo. Kama ukali wa tanuru, pia haiwezi kupasha joto kipande cha kazi katika eneo fulani. Vacuum huzuia workpiece kutoka kwa kukabiliana na gesi ya angahewa katika hewa, hivyo matokeo ni unaffected. Flame hardening pia inahusisha hardening ya uso wa nje kwa kutumia moto wakati kudumisha ductility ya sehemu ya msingi. Uwezo wa kina wa moto wa moto unazunguka hadi 10mm. Utaratibu huu ni kawaida kutumika kwa ngumu sehemu ndogo au nyembamba au kwa ngumu maeneo maalum ya kipande muhimu zaidi. Kwa kuwa induction hardening haitumii mbinu ya joto ya wazi kama moto hardening, ni sahihi zaidi na haina kuunda overheating, scaling, au decarburization uharibifu.