|
|
|
| Discussion about the on-line pickling process of titanium and titanium alloy plate |
| WANG Guo-fu1��ZHOU Qing-jun2��JIANG Lu-bao1 |
��1. Plate Branch�� Baosteel Special Metals Co.�� Ltd.�� Shanghai 200940�� China
2. Research Institute�� Baoshan Iron and Steel Co.�� Ltd.�� Shanghai 201900�� China�� |
|
|
|
|
Abstract In the horizontal continuous spray pickling process�� the original equipment and shot blasting��mixed acid ��HNO3��HF�� pickling process were applied for the pickling of titanium and titanium alloy plate. The surface scale of TA2 plate was easy to remove by the pickling process�� and the surface was also easily overly acidic. After pickling�� the defects�� such as yellow spot and black pockmark defects�� appeared on the surface�� which caused the high consumption of the mixed acid�� influenced the delivery time. According to the defects and problems�� taking TA2 titanium and TC4 titanium alloy plate as the representative products�� the one-step mixed acid ��HNO3��HF�� pickling process was introduced�� and the surface shot blasting and the surface mixed acid ��HNO3��HF�� pickling test were conducted. Based on the laboratory and industrialization technological test and research�� the equipment in the original horizontal continuous spray pickling process and the technology were optimized. After pickling�� the plate surface was silvery and even in color. And the first pickling qualified rate was over 90%.
|
|
Received: 03 May 2017
Published: 05 December 2017
|
|
|
|
| [1] |
���壬���������Ѱ�����������б�����ϴ�������о� [J]����ұ�� 2011��33��2����45-47.
|
| [2] |
���ң�����أ�������ϴ�������ѺϽ���������Ƥ��Ӧ�� [J]�й������Ƽ� 2011��10(14)��19-19.
|
| [3] |
Īη, ��ұ�� [M].ұ��ҵ������,1979.
|
| [1] |
LI Xiao-ming��YIN Wei-dong��SHEN Miao��ZOU Chong��CUI Ya-ru��ZHAO Jun-xue. Desulfurization dynamics on reduction pre-treatment of sludge from pickling of chromium nickel stainless steel[J]. , 2018, 53(2): 83-90. |
| [2] |
CHEN Jin-shan��ZHOU Guo-ping. Development of control model for basic automation in pickling mills[J]. Chinese Journal of Iron and Steel, 2017, 29(5): 397-401. |
| [3] |
CHEN Jin-shan��ZHOU Guo-ping. Development and application of mathematical model for process control in continuous pickling line[J]. Iron and Steel, 2017, 52(3): 100-107. |
| [4] |
ZHENG Fang-yuan. Self-learning model of temperature control for plate cooling after rolling based on[k-NN]method[J]. Iron and Steel, 2016, 51(7): 57-59. |
| [5] |
LIU Shi-wang��LIU Qiang��WANG Wen-shao. Cause analysis of disqualified elongation of Q235B medium plate[J]. Chinese Journal of Iron and Steel, 2016, 34(1): 10-13. |
| [6] |
HU Xian-lei,ZHAO Zhong,DING Jing-guo. Changes of temperature difference between plate head and tail during rolling process[J]. Chinese Journal of Iron and Steel, 2015, 27(5): 42-45. |
|
|
|
|
2017, Vol. 35 
