CN104070076A - Surface treatment process of hot-rolled titanium coil for cold rolling - Google Patents

Abstract

The invention provides a surface treatment process of a hot-rolled titanium coil for cold rolling, which comprises the steps of carrying out surface mechanical dephosphorization by using primary shot blasting, treating local defects by using a coping method, removing a surface oxidation layer by using primary acid washing, carrying out surface homogenization by using secondary shot blasting, and meeting the use requirement of the surface quality of the cold-rolled coil after treatment. By adopting the surface treatment process of the invention, the surface quality and the like of the hot-rolled titanium coil after cold rolling can be improved, and the use requirements can be met.

Description

A surface treatment process for hot-rolled titanium coils for cold rolling

technical field

The invention belongs to a metal material processing method, and in particular relates to the technical field of a surface treatment method of a hot-rolled titanium coil for cold rolling.

Background technique

When the titanium coil is hot-rolled, the surface is oxidized to form an oxide layer, and at the same time, local defects such as indentation, bonding, and scratches will also be formed during the rolling process. In order to ensure the surface quality of cold-rolled titanium coils, the surface of hot-rolled titanium coils must be treated.

The existing treatment process is shot blasting + pickling treatment, the surface contamination layer of hot-rolled titanium coils cannot be completely removed, and the surface quality of titanium coils after cold rolling cannot meet the requirements for use.

Contents of the invention

In order to overcome the shortcomings of the existing surface treatment process for hot-rolled titanium coils for cold rolling, the purpose of the present invention is to provide a surface treatment process suitable for hot-rolled titanium coils for cold rolling. Treatment, the surface quality of the hot-rolled titanium coils after surface treatment is good, and the cold-rolled titanium coils meet the requirements.

The present invention is achieved through the following technical solutions: a surface treatment process for hot-rolled titanium coils for cold rolling, including performing mechanical dephosphorization on the surface with one shot blasting, treating local defects with a grinding method, one pickling to remove the surface oxide layer, two The first shot blasting is used to homogenize the surface, and the second pickling is used to remove the residual oxide layer on the surface. It goes through the following process steps:

A. The hot-rolled titanium coil is shot blasted once;

B. After the first shot blasting, the hot-rolled titanium coil is repaired for local surface defects;

C. The hot-rolled titanium coil is pickled once;

D. Hot-rolled titanium coils are subjected to secondary shot blasting;

E. Second pickling for hot-rolled titanium coils;

F. The hot-rolled titanium coil is transferred to the cold-rolling process.

Compared with the prior art, the present invention has the following advantages and effects: the above-mentioned surface treatment process can make the surface quality of the hot-rolled titanium coil after cold-rolling improved and meet the use requirements.

Detailed ways

The present invention will be further described below in conjunction with the examples.

A surface treatment process for hot-rolled titanium coils for cold rolling, including mechanical dephosphorization of the surface by one shot blasting, treatment of local defects by grinding, one pickling to remove the surface oxide layer, and second shot blasting for surface homogenization, Through the following process steps:

A. The hot-rolled titanium coil is shot blasted once;

B. After the first shot blasting, the hot-rolled titanium coil is repaired for local surface defects;

C. The hot-rolled titanium coil is pickled once;

D. Hot-rolled titanium coils are subjected to secondary shot blasting;

E. Second pickling for hot-rolled titanium coils;

F. The hot-rolled titanium coil is transferred to the cold-rolling process.

Specifically:

A. Shot blasting the hot-rolled titanium coil;

B. The hot-rolled titanium coil is uncoiled for surface grinding treatment;

C. Hot-rolled titanium coils are pickled;

D. The hot-rolled titanium coil is shot blasted again;

E. The hot-rolled titanium coil is pickled again;

F. Hot-rolled titanium coils are sequentially cold-rolled.

Claims (1)

1. a cold rolling process of surface treatment with hot rolling titanium volume, comprises and carries out surperficial mechanical dephosphorization with a ball blast, processes local defect with grinding method, surface oxide layer is removed in a pickling, secondary ball blast carries out surface uniform, it is characterized in that process following process steps:

A, hot rolling titanium involve in ball blast of row;

After B, a ball blast, hot rolling titanium involves in the reconditioning of row local surfaces defect;

C, hot rolling titanium involve in a pickling of row;

D, hot rolling titanium involve in row secondary ball blast;

E, hot rolling titanium involve in row white picking;

F, hot rolling titanium volume proceed to cold rolling process.