⑴ Superficiem Quenching:
Is the surface of the steel through rapid heating to the critical temperature above, but the heat has not had time to spread to the core before the rapid cooling, so that the surface layer can be quenched in martensitic tissue, and the core has not undergone phase transformation, which realizes the surface hardening and the core unchanged. Idoneam enim medium ipsum ferro.

⑵ chemical calor curatio:
Refers to chemical elementum atomorum, cum facultatem atomicae diffusio ad altum temperatus, in superficiem iacuit de workpiece, ad mutare chemical compositionem et structuram et perficientur de workpe, ita ut ad consequi superficiei et calor curatio est ad consequi in superficiei et calor et ad specifica elit. Secundum species infiltration elementa, chemical calor curatio potest dividi in carburizing, nitriding, cyanidation et metallum infiltration legis.
Carburizing: Carburizing est processus per quod ipsum atomis penetrare superficiem layer ferro. Est etiam ad humilis ipsum ferro workpiece cum altum ipsum ferro superficiem layer et post extinxit et humilis temperatus temperatio, ut superficiem accumsan workpiece etiam tenuerit et plasticity humilis carboni ferro et lectus et lowpience.
Nitriding, aut nitriding, est processus per quam superficie iacuit ferro penetrat NITROGENIUM atomos. Quod ad amplio duritiam et gerunt resistentiam superficiem iacuit et amplio lassitudine robur et corrosio resistentia. In praesens, Gas Nitriding modum adhibetur in productione.
Cyanidation, etiam quae carbonitriding, est simultaneous infiltration carbonis et nitrogen atomos in ferro. Facit superficies ferro carburizing et nitriding.
Metallum penetrationem: refert ad penetrationem metallum atomi in superficiem iacuit de ferro. Est ut superficie iacuit de ferro offering, ut ad workpiece superficiem habet aliquam alloy ferro, speciale ferro characteres, ut calor resistentia, etc .. Communiter in productio, rorum, chromizing, boronizing in productio, corrosio, chromizing, boronizing in productio, corrosio, chromizing, boronizing in productio aluminizing, chromizing, boronizing in productio, et in.