Method for controlling acid washing quality of titanium tape rolls

Abstract

The invention discloses a method for controlling the acid washing quality of titanium tape rolls. An acid supply and drainage system for acid washing of the titanium tape rolls (19) comprises an acid preparation system and an acid washing process section. The method has the characteristics and effects that acid is supplied continuously and stably in the acid washing process section, and proper process rate and reaction temperature are matched, so that the stability of the acid washing concentration of the process section is ensured, the surface quality of the acid washed titanium tape rolls can be stably controlled, and excessive acid washing and under acid washing are prevented; the acid washing yield of the titanium rolls can be improved; the utilization rate of acid can be improved, the consumption of the acid can be reduced, the treatment quantity of waste acid is reduced, and environmental protection is facilitated; and the method is simple, easy to operate and strong in practicability.

Description

technical field [0001] The technology of the invention belongs to a method for controlling the stable quality of pickling of titanium coils. It is mainly used for pickling production of pure titanium coils and titanium alloy coils. technical background [0002] Titanium coil and titanium alloy coil are high-tech and high-tech materials, which have many advantages such as high specific strength, small thermal expansion coefficient, good corrosion resistance, high temperature performance, low temperature performance, and excellent low temperature superconductivity. They are used in aerospace, military It is widely used in civilian fields such as industry, chemical industry, petroleum, and sports. It is called the "third metal" after steel and aluminum, and is also called "space metal" and "ocean metal". [0003] In the existing titanium coil pickling technology, the acid solution is pre-prepared into the acid tank, and then put into the acid tank, the titanium coil reacts wit...

AI Technical Summary

Problems solved by technology

[0003] In the existing titanium coil pickling technology, the acid solution is pre-prepared into the acid tank, and then put into the acid tank, the titanium coil reacts with the acid through the acid tank, and the oxide layer on the surface of the titanium coil is cleaned. When the acid enters the acid tank, the concentration of the acid solution decreases with the reaction time, resulting in uncontrollable pickling process speed and titanium coil pickling quality; too high concentration and too low process speed lead to over-pickling of titanium coils, and the acid removal of titanium coils The oxide layer is also pickled to remove part of the titanium body, which reduces the yield of the pickled titanium coil, increases the acid consumption, the concentration is too low, the process speed is too fast, and the oxide layer on the surface of the titanium coil is not cleaned.

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