Ukungqubuzana phakathiukuqambaukungqubuzana phakathi kwezinsimbi ezimbili zokwakheka nezakhiwo ezihlukene (ama-alloys), phakathi kwensimbi ethambile (ucezu lokusebenza) nensimbi eqinile (die). Endabeni yokungabikho kokugcoba, ukungqubuzana kokuxhumana kwezinhlobo ezimbili zefilimu ye-metal surface oxide; Ngaphansi kwesimo sokuthambisa, ukungqubuzana kokuxhumana phakathi kwefilimu ye-oxide ezindaweni ezimbili zensimbi nendawo yokugcoba ngokulandelana, kanye nokungqubuzana phakathi koqweqwe lwangaphakathi lomsebenzi, olungakakhishwa i-oxidized futhi olunamandla amakhulu okukhangisa, futhi ukungqubuzana phakathi kwendawo yokugcoba kanye nengaphezulu le-die kanye nendawo yangempela yokungqubuzana (yokuxhumana) kuyakhula.

Ngenxa yezimpawu zokungqubuzana phakathi kokungenalutho nendawo yokuxhumana ye-die ku-inqubo yokuqamba, imiphumela elandelayo izophumela:
(1) Amandla okuguqula akhuphuka ngo-10% ngenxa yokungqubuzana, futhi ukusetshenziswa kwamandla kukhuphuka ngokufanele;
(2) ukungqubuzana kuholela ekuguquguqukeni okungalingani kokufogetha, ukuze ukwakheka okusanhlamvu kwangaphakathi nokusebenza kungafani, futhi ikhwalithi yangaphezulu iyehla;
(3) ukungqubuzana kuholela ekuncipheni kokwakheka kwejiyomethri kanye nokunemba kobukhulu bezinto ezifojiwe, okuholela ekulahlekeni kwezinto eziwumgunyathi lapho ama-forging engagcwaliswanga ngokungathi sína;
(4) ukungqubuzana kuholela ekugugekeni okubi kwefa futhi kufinyeze ukuphila kwayo;
(5) Ukwandisa ukumelana nokungqubuzana kwendawo ye-cavity kungenza umgodi onzima ukugcwalisa insimbi ngokushelela futhi unciphise izinga lokwenqaba.
Kuyabonakala ukuthi ukungqubuzana kuyinkemba esika nhlangothi zombiliukukhiqizwa kokuqamba, enakho kokubili okuhle nokubi. Ngakho-ke, ukungqubuzana kwenqubo yokubumba kufanele kulawulwe ngokuqinile ukuze kuqinisekiswe inqubo evamile yokubumba.