Production Process Hot Rolled Brazing Aluminum Sheet

The production process and control points of hot rolled brazing aluminum sheet / plate / strip

1) production process of hot rolled brazing aluminum sheet/plate/ strip
The production process of Hot rolled brazing foil mainly includes aluminium ingot milling surface, homogenization heat treatment, core board hot rolling, cladding plate hot rolling, cladding production process, heating, hot cladding rough rolling, hot cladding finish rolling, cold rolling, finishing to the finished products.



2) control points of each production processes
Pretreatment of casting surface
In order to ensure the quality of the hot rolling cladding sheet/plate/ strip, to do the milling surface of base alloys and cladding alloy ingot is required, to insure the defects such as deep groove mark, aluminum cuttings, slag, surface crack and loose are not existed.The residual oil, dust and metal oxide film on its surface must be cleaned by chemical and physical methods before rolling, which can be used for rolling compound.

Casting ingot homogenization treatment
The purpose of homogenization treatment is to alleviate casting stress, improve casting tissue, reduce or eliminate component segregation, and reduce deformation resistance.

Blank size control
According to the final product size and cladding rolling rule,to rollthe treated core board, cladding casting plate ingot to required size, pay attention to the brazing aluminum plate width should be slightly bigger than the finished size, to ensure the uniformity of cladding layer material, product unilateral trimming quantity must be bigger than 80 mm.

Heating before hot rolling aluminum brazing sheet
The plate surface should remain clean before heating, with no obvious defects on the surface.

Hot rolling and cladding aluminum sheet
In the first stage of the hot rolling and cladding, is the free deformation stage,should adopt the slow rolling method of low pressure, and the rolling method is different from that of ordinary single material.