Sandblasting electrolysis process for the inner wall of the thermos cup

Sandblasting electrolysis process for the inner wall of the Thermos cup

The sandblasting electrolysis process for the inner wall of the thermos cup is a surface treatment technology that combines sandblasting and electrolysis to improve the performance and aesthetics of the inner wall of the thermos cup. The following is a detailed introduction to the steps, principles, advantages and disadvantages of this process and its application in actual production.

Process steps
Pretreatment: First, clean the inner wall of the thermos cup to remove dirt and impurities on the surface to ensure that the subsequent process can have good contact with the surface of the thermos cup.
Sandblasting: Use high-pressure air to spray abrasives (such as glass sand) onto the inner wall of the thermos cup to remove oil stains and minor flaws on the surface, while forming a uniform rough surface on the inner wall to prepare for the electrolysis process.
Electrolysis: Put the sandblasted thermos cup into the electrolyte, and through the action of the current, form an oxide film on the surface of the thermos cup or change the surface characteristics. The selection and preparation of the electrolyte depends on the material of the thermos cup and the required surface treatment effect.
Post-treatment: After the electrolytic treatment is completed, the thermos cup is taken out and necessary post-treatment is carried out, such as cleaning and drying, to improve the surface quality and aesthetics.

Principle
The principle of the sandblasting electrolytic process is to combine mechanical and electrochemical effects to perform micro-leveling and modification on the metal surface. Sandblasting removes surface defects through physical action to form a rough surface; electrolysis uses electric current to selectively dissolve the metal in the electrolyte, and the concave parts enter the passive state while the raised parts are actively dissolved. Combined with the solution brightener and anode polarization, the purpose of electrochemical leveling and polishing is achieved.

Advantages and Disadvantages
Advantages
Improve the thermal insulation effect: The sandblasting process can form a uniform rough surface on the inner wall of the thermos cup, increase the surface area, and thus more effectively improve the thermal insulation effect.
Aesthetics: The inner wall after electrolytic treatment has a uniform color. During the electrolysis process, the inner wall can present different visual effects such as mirror, highlight, matte, and dull through time and the ratio of the electrolyte.
Strong corrosion resistance: A dense oxide film can be formed during the electrolysis process, which effectively blocks moisture and pollutants and improves the corrosion resistance and durability of the cup.
Environmentally friendly and healthy: The electrolysis process can effectively prevent beverages from spoiling, reduce the growth of bacteria, and make drinking water safer and more hygienic.
Disadvantages
High cost: Compared with traditional polishing processes, sandblasting and electrolysis processes have higher equipment and operating costs.
Difficulty in cleaning: Due to the rough surface, some fine food particles and stains may adhere to the inner wall and are not easy to clean.
Complicated process: The inner liner must be sprayed at least three times to achieve the desired effect, which prolongs the construction period and increases the workload.

Application in actual production
The sandblasting electrolysis process on the inner wall of the thermos cup is mainly used in actual production to improve the thermal insulation performance, aesthetics and durability of the product. This process is suitable for various types of stainless steel Thermos Cups, such as vacuum cups, stewing cups, etc. The thermos cup treated by this process not only has good thermal insulation effect, but also has a more beautiful appearance, strong corrosion resistance and long service life.
In addition, the sandblasting electrolysis process can also make the thermos cup more "variable" and adapt to different usage needs. For example, it is not afraid of high temperature, acid and alkali, and can resist fruit acid erosion, so that the beverage always maintains its original flavor. Moreover, the electrolytic liner also meets the international CE standard, so that consumers can buy and use it with confidence.

In short, although the sandblasting electrolysis process on the inner wall of the thermos cup has some challenges in terms of cost and cleaning, the high insulation effect, aesthetics and durability it brings make this process widely used in the production of thermos cups. With the advancement of technology and the reduction of costs, this process is expected to be more widely used in the future.