Ashrafi came out on top against Australian Aiden Stilley in straight rounds to walk away with the ultimate prize in the men’s +78kg contests.
The Iranian used his height and leg length to maximum effect in both rounds, winning the first 11-2 and the second by technical superiority as his 15-point lead secured a richly-deserved triumph for him.
The final victory capped off a dominant run in Chuncheon for the Iranian, who did not concede a single round throughout his campaign, enjoying knockout victories over Canadian Ronan Sinclair and Italian last-four opponent Matteo De Angelis – courtesy of a powerful spinning head kick just over 30 seconds into the contest.
Ashrafi’s glory came after Iranian girls Parnian Nouri and Aynaz Nasiri had won a couple of golds on the preceding night.
Nouri overcame China’s Yinuo Xu in back-to-back rounds (4-1, 15-8) in an intriguing -52kg final, while Nasiri defeated Kazakhstan’s Nuray Kaznabek 4-0 and 5-4 in the -59kg showdown.
Mahdi Rahmati and Saina Alipour were the other Iranians in action on Wednesday but finished their campaign empty-handed.
Rahmati fell to a first-round exit in the men’s -45kg event after a loss to Wu Yejie of China.
Representing the country in the women’s -46kg class, Alipour defeated opponents from Canada, Portugal, and Turkey, before suffering a last-eight loss to Violeta Diaz Arribas of Spain.