Improvement of horizontal continuous casting was performed to produce the Sn-Zn alloy ingot according to the characteristics of Sn-Zn alloy.The improved technical ways were conducted by analyzing origination of billet-broken and internal crack from the viewpoint of alloy composition.The Sn-Zn alloy billets with excellent and stable quality can be produced by modifying mould structure

strengthening cooling rate and improving drawing mechanism as well as controlling liquid head

and adopting the rapeseed oil as lubricant.The main technical parameters of pulling machine and holding furnace were provided.