There are three main crimping methods in the crimping process of laminated aluminum tubes: positive crimping, reverse crimping, and forward crimping. Each method has its unique operating procedure and applicable scope. Next, we will introduce the characteristics and applications of these three crimping methods in detail.
Positive Creep and its Characteristics: Positive crimping starts from the center of the splice tube and gradually applies pressure to both sides. This crimping method is common and convenient, and the resulting structure has excellent symmetry. Positive crimping is widely used, especially in situations requiring symmetrical structures and convenient operation.
Reverse Creep and its Application: Reverse crimping is the opposite of positive crimping and is typically used for crimping aluminum crimping tubes such as tension clamps. Specifically, the crimping sequence for tension clamp aluminum tubes starts from the conductor side opening, applying pressure layer by layer to the unpressurized area mark on the same side, then skipping the "unpressurized area," and then sequentially crimping from the unpressurized area mark on the steel anchor side to the steel anchor side tube. It is worth noting that the "reverse crimping" process is only applicable to the crimping of tension clamps and not to the crimping of splice tubes. Its operation is simple, and the resulting structure exhibits good symmetry, effectively improving the problem of loose strands.
Forward Pressing and its Operation: Forward pressing involves hydraulically pressing the splice tube from the traction side to the other side. Specifically, the pressing sequence for the aluminum splice tube starts from the traction side, applying pressure sequentially to the unpressurized area marker on the same side, then skipping the unpressurized area, and then sequentially pressing from the unpressurized area marker on the other side to the tension side. Please note that the forward pressing process is only applicable to splice tubes, not to tension clamps. The resulting structure exhibits slightly less symmetry, and the operation is relatively more complex.
