Stainless Steel HRAP Line

HRAP –is a hot rolled annealed and descaled product resulting in a dull rough surface. It is available in plate and sheet and is used for functional applications where a smooth decorative finish is not important.

HRAP (Hot Rolled Annealed & Pickled) line refers to the way in which a hot rolled piece of stainless steel strip or coil is finished after manufacturing. The term "Pickled" means that the material has been subjected to an acid solution that has been specifically developed to remove the high temperature oxides that appear on the surface after annealing. Removal of these oxides helps to restore the inherent corrosion resistance of the stainless steel. Pickling solutions can be applied by immersing the stainless steel in a bath, spraying the surface or applying small amounts of a pickling paste with a paintbrush.

 

 

 

HRAP –is a hot rolled annealed and descaled product resulting in a dull rough surface. It is available in plate and sheet and is used for functional applications where a smooth decorative finish is not important.

HRAP (Hot Rolled Annealed & Pickled) line refers to the way in which a hot rolled piece of stainless steel strip or coil is finished after manufacturing. The term "Pickled" means that the material has been subjected to an acid solution that has been specifically developed to remove the high temperature oxides that appear on the surface after annealing. Removal of these oxides helps to restore the inherent corrosion resistance of the stainless steel. Pickling solutions can be applied by immersing the stainless steel in a bath, spraying the surface or applying small amounts of a pickling paste with a paintbrush.

 

 

 


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This mill can directly unwind, straighten, and weld the hot-rolled black coils , then cold rolling, annealing, descaling, and finally flattening and winding. Finished or semi-finished stainless steel coils such as No. 2B, No. 2D, No. 2E, etc. required are manufactured in one process. Compared with the traditional production mill, it has simple process steps, which effectively reduces the production cost and meets the production requirements from the black coils directly to the industrial-grade finished coils. At the same time, the unit can be switched to cold-roll white coils (No.1) to manufacture precision high-quality 2B coils products to meet the needs of different markets.

Mill configuration: two-channel automatic uncoiler→automatic fast welding machine→three-stand 18Hi continuous rolling mill→annealing unit→scale breaker→acid washing unit→2 High skin pass mill→splitting machine→automatic winding→packaging machine.

Intellectual property rights: has obtained national invention patents. Patent No.: ZL201610655744.6

 

This mill can directly unwind, straighten, and weld the hot-rolled black coils , then cold rolling, annealing, descaling, and finally flattening and winding. Finished or semi-finished stainless steel coils such as No. 2B, No. 2D, No. 2E, etc. required are manufactured in one process. Compared with the traditional production mill, it has simple process steps, which effectively reduces the production cost and meets the production requirements from the black coils directly to the industrial-grade finished coils. At the same time, the unit can be switched to cold-roll white coils (No.1) to manufacture precision high-quality 2B coils products to meet the needs of different markets.

Mill configuration: two-channel automatic uncoiler→automatic fast welding machine→three-stand 18Hi continuous rolling mill→annealing unit→scale breaker→acid washing unit→2 High skin pass mill→splitting machine→automatic winding→packaging machine.

Intellectual property rights: has obtained national invention patents. Patent No.: ZL201610655744.6

 

Main Technical Parameters

Material AISI200,300,400
Strip width 800-1550mm
Material strip thickness 2~6.0mm
Product strip thickness 1.0-4.0mm
Process speed 130~150mpm
Mill exit speed 220mpm
Max. reduction  40-52%
Max. TV value 240

Main Technical Parameters

Material AISI200,300,400
Strip width 800-1550mm
Material strip thickness 2~6.0mm
Product strip thickness 1.0-4.0mm
Process speed 130~150mpm
Mill exit speed 220mpm
Max. reduction  40-52%
Max. TV value 240
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