SFRE has successfully rolled the hardest aluminium alloy grade 7075 during hot-tests of an aluminium bar mill.

The bar mill has been delivered to Dingjiu Advanced Material Kunshan on an EPC basis.

It features eight stands with ø500mm H-V rolls and 12 stands with ø370mm Y roll housing.

Series-6 aluminium alloy bar was produced successfully in May.

“Most aluminium bar mills are designed with an incomplete equipment structure and are subject to stopping during production of the hardest aluminium alloy bar,” explained a spokesperson for Dingjiu.

“The maintenance required after halt can cause production delays for one or two days. Commissioning of the hardest bar can be very difficult and time-consuming and take up to two years.”

Added the spokesperson: “SFRE spent less than a year in hot testing and have produced extremely hard product. The quality of series-6 and grade 7075 products is to a high standard.”

SFRE has delivered the roller table with the pinch roll, ø500mm breakdown mill, follow-up hydraulic shear, ø370mm Y finishing mill, 5-roll coiler, disc car, automatic rotary flying shear and tilter.

SFRE’s commissioning has now resulted in rolling of ø150mm aluminium alloys, ø20mm coils and ø30mm bars. These products will be used for aerospace and other critical industries.