How many layers can be rolled during the steel drum sealing process? Some people think that the more the more the more, this is true! The more layers of crimping, the higher the strength and the better the sealing effect. But is it possible to achieve ten-layer or twenty-layer roll seal? Let's not say that there is a quality cost issue here. In fact, this cannot be achieved.

Restrictions on raw materials for steel drums To make steel drums, the material must have low carbon content and good plasticity. Because of its good processing performance, welding, stamping and bulging are easy to ensure quality. But the hemming is different, because the size of the hemming roller groove cannot change with the hemming process, and the hemming force must be gradually transferred to the center of the hemming through the peripheral material, so that the center can be rolled. The better the plasticity of the material, the more difficult it is to transmit force. It is conceivable that if the material of the steel drum is spring steel, the same material as the law of a clock, not to mention ten layers, it is probably easy to roll even twenty layers, because it has good elasticity and rigidity, and the sealing force through the outer coil is very high. Easy to reach the center. But this is impossible, because this material has good elasticity, so after the end of the rolling, when the rolling force disappears, it is easy to rebound back to the original state, that is, to return to the beginning of the rolling. This is obviously not what we need. Therefore, it is impossible for us to choose highly elastic materials. As far as the materials currently used to make steel drums in the world are concerned, my country's materials are rigid, so the quality is difficult to guarantee. And the number of curling layers does not exceed seven. According to the research of relevant foreign experts, the number of layers of steel drum curling will not exceed seven, obviously the sealing force cannot be transmitted that far.