Azad Singh, 46, found his wife’s boyfriend Majinder Virk hiding between his sons’ beds when he returned from a night shift.
Kulwinder Kaur had been having an affair with Virk and allegedly had just been having sex with him when Singh returned.
Flying into a rage, Singh repeatedly punched and kicked Virk but his wife managed to get him out of the flat.
Singh then stabbed his 40-year-old wife three times using a large kitchen knife, with one blow slicing a carotid artery.
The trial judge rejected Singh’s claim he had lost his self-control after his wife had taunted him about his sexual prowess.
After a seven day trial at Wolverhampton Crown Court, Singh from Willenhall, West Midlands was convicted on Wednesday and sentenced to life imprisonment to serve a minimum 14 years.
He pleaded guilty to wounding of the 40-year-old man who had been in the flat with Mrs Kaur at the time during a previous hearing.
The court heard Singh and Mrs Kaur, known to friends as Rani, moved to the UK from Italy with their two teenage sons in 2016.
In October they moved to a rented tenth floor flat where Singh worked during the day at Joe’s Chippy while Mrs Kaur worked night shifts at nearby Slick Stitch embroidery factory.
The affair then began with Virk, 41, when on January 18 after they had been together Singh returned home and rang the doorbell around 11am.
Virk hid in the children’s bedroom but was found by Singh who ‘rained down heavy blows’ before dragging him towards the front door.
Miss Brand said Singh further punched and kicked Virk but that Mrs Kaur was able to open the front door and her lover escaped.
The prosecutor, added: ‘After Mr Virk left only the defendant can say what happened next. He must have gone to the kitchen to fetch a knife and it must be the same time Mr Virk was making his exit through the door.
‘The police found blood on the edge of a kitchen workshop immediately above the cutlery draw. It was Mr Virk’s blood. There can’t be any doubt it came from the defendant’s hands.
‘We know his wife sustained three stab wounds. We know he left the flat leaving her body on the floor.’
Mrs Kaur was stabbed once in her neck, once on her shoulder and once in her side. The latter wound was found to be up to 15cm (5.9in) deep.
Miss Brand added Singh immediately visited family friend Onkar Singh and told him he had ‘killed Rani.’
But when interviewed by police Singh said he had not immediately realised the knife had gone into his wife and that he left the flat not knowing she was dead.
The jury was told Singh has pleaded guilty to a charge concerning the attack on Mr Virk and is charged with murdering his wife.
Detective Inspector Justin Spanner, from Force CID, said: ‘There can be no justification for Singh’s actions – regardless of the emotions he may have been feeling at the time.
‘A family has been tragically ripped apart and will have to live with the consequences of his brutal knife attack forever.’