1. The main difficulty in forming the chute coil is that the formed coil is easy to deform in the subsequent production, which leads to the out-of-tolerance of the finished coil size and poor shape consistency.

2. Matters needing attention in the manufacturing process of the chute coil are that the shape and size of the coil are mainly ensured by the molding die. However, due to the long time-consuming process of gluing and setting, many manual operations, high requirements on the skills of operators, and different skills of different operators will lead to poor coil consistency.