First, chemical method
Chemical method mainly refers to the copper workpiece immersed in pickling solution, the use of acid and copper workpiece surface oxides react to generate soluble copper salts, so as to achieve the purpose of removing oxides. Common pickling solutions include nitric acid, sulfuric acid, hydrochloric acid hydrofluoric acid and so on. Among them, nitric acid and sulfuric acid are commonly used pickling solutions, but hydrofluoric acid can better remove oxides, and less corrosive to the copper workpiece.
Second, the mechanical method
Mechanical method mainly refers to the use of grinding, polishing, sandblasting and other mechanical means to remove oxides from the surface of copper workpieces. Among them, grinding and polishing methods can be more thorough removal of oxides, but will cause some damage to the copper workpiece; sandblasting method can be more rapid removal of oxides, and less damage to the surface of the copper workpiece.
Third, chemical – mechanical joint method
Chemical – mechanical joint method is a more advanced treatment method, it is the chemical and mechanical method combined, the use of pickling solution and mechanical means of removing copper workpiece surface oxides. The method can be more thorough removal of oxides, and less damage to the surface of the copper workpiece.
Fourth, heat treatment method
Heat treatment method mainly refers to the copper workpiece heated to a certain temperature, the use of high temperature copper workpiece oxides will react with oxygen to generate soluble copper salts, so as to achieve the purpose of removing oxides. The method is relatively simple, but requires certain equipment and energy.
Fifth, electrochemical method
Electrochemical method mainly refers to the use of the principle of electrolysis, the copper workpiece as the anode, under the action of the current, the anode copper loss of electrons and become copper ions into solution, so as to achieve the purpose of removing oxides. The method is more environmentally friendly, but requires certain equipment and energy.
Six, ultrasonic cleaning method
Ultrasonic cleaning method mainly refers to the use of ultrasonic vibration, the copper workpiece surface attached to the vibration of the oxides off, so as to achieve the purpose of removing oxides. The method is more efficient, but requires certain equipment and energy.
In summary, there are a variety of copper workpiece oxidation treatment methods, the specific choice of which method needs to be judged according to the actual situation. In the treatment of copper workpiece oxidation, need to pay attention to safety issues, to avoid the use of improper security accidents.
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