Rust of industrial casters is a common phenomenon. Some heavy-duty casters are easy to rust, while others are difficult to rust. Industrial casters placed in humid places are easy to rust, while ultra-low heavy-duty casters placed in dry places are not easy to rust; casters exposed to the air are easy to rust, while shock-absorbing casters painted with paint are not easy to rust.
Through experiments, we found that water and oxygen are the reasons why industrial casters are easy to rust. Water alone will not cause industrial casters to rust. Only when oxygen in the air dissolves in water, oxygen reacts chemically with heavy-duty casters in a water environment to generate something called oxidized casters, which is caster rust. Caster rust is a brown-red substance that falls off easily. After a caster is completely rusted, its volume can increase by 8 times. If the caster rust is not removed, this spongy caster rust is particularly easy to absorb moisture, and the caster will rust faster.
Knowing the secret of industrial caster rust, we can effectively prevent the occurrence of caster rust. Casters in wet places are more likely to rust than heavy-duty casters in dry places because industrial casters in wet places are more likely to come into contact with water than shock-absorbing casters in dry places. The painted ultra-low heavy-duty casters are not easy to rust because the paint isolates air and water. If you want to reduce the rust of industrial casters, you can cut off any one of the rusting conditions based on the conclusion of the experiment. If you paint it, the contact between the heavy-duty casters and the air is cut off to prevent the product from rusting.
Surface treatment of casters is an important measure to effectively prevent rust on casters. It is mainly divided into two methods: galvanizing and electrophoresis. The reason why these two methods are widely used is not only because of their unique anti-rust effect, but also because of other advantages, as follows:
1. Low processing cost. The cost of galvanizing anti-rust is lower than that of other paint coatings;
2. Strong anti-rust performance. Casters treated with galvanizing are more It is not easy to rust within a year;
3. Good reliability. The galvanized layer and steel are metallurgically bonded to become part of the steel surface, so the durability of the coating is relatively reliable;
4. The coating has strong toughness. The galvanized layer forms a special metallurgical structure that can withstand the mechanical damage of the caster during movement and use;
5. Comprehensive protection. Every part of the plated part can be galvanized, even in the universal wheel, caster depressions, sharp corners and hidden places. It can be fully protected;
6. It does not affect welding. The hardware surface can still be welded after galvanizing, such as spot welding after assembly.
1. High strength. When the temperature is 150℃, the hardness can reach 3-4H;
2. Good leveling, strong paint film, and good smoothness of the paint film;
3. Good bonding and penetration, the paint is pervasive, and the wet film and dry film have strong bonding;
4. Good discoloration resistance and anti-corrosion performance. When the baking temperature reaches 180℃-190℃, the workpiece does not change color. In this way, the caster product has a long-lasting and bright color and excellent corrosion resistance;
5. Good electrophoretic uniformity, the paint film is uniform and flat, and it can pass to 10-25um within 30-150V, with high efficiency and low power consumption;
6. Good impact resistance and artificial sweat resistance;
7. Various colors can be electrophoresed, such as black, brown, red, blue, green and other colors. Combined with matte ions, it can also achieve various effects such as semi-matte.
