Duchini was born in the Barrio Norte district of Buenos Aires on November 10, 1910, at a young age his family moved to Chacarita where he joined the youth team of Chacarita Juniors in 1922. He made his debut in 1928 and played for the club until his retirement in 1938.
After retiring as a player Duchini became a coach, he took charge of Chacarita Juniors in 1939 and in 1941 he led the team to the Argentine 2nd Division championship. he stayed with the club until 1943.
During the 1940s and 1950s he worked as a youth coach at San Lorenzo, Racing Club, River Plate and Independiente.
In 1954 he was appointed youth coach for the Argentina national team, a position he held for 20 years. During his reign he won the Pan American Games in 1955 and 1959.
In 1974 he became assessor of youth development, a position he held until 1994. He was part of the coaching team that led the Argentina under 20 team to their first World Youth Championship in 1979.
Duchini died on March 19, 2006 at the age of 95 in the Pirovano Hospital, he is buried in the La Chacarita Cemetery.