Production process of jacket

The invention discloses a production process of jacket. The production process comprises the following steps: preparing materials, namely, punching copper material into belt materials according to the design dimension; stretching at a plurality of times, namely, feeding the prepared belt materials into a continuous die to stretch in sequence; punching a hole, namely, transferring the stretched jacket into a punching die on the continuous die to punch the hole; extruding to form a ring, namely, feeding the punched jacket into an extruding die on the continuous die to extrude to form the ring; stretching, namely, transferring the jacket subjected to ring extruding into a stretching die to stretch again until the diameter of the stretched part of the jacket is 5 to 5.2mm; shaping, namely, shaping and flattening the stretched jacket; modifying and shearing, namely, modifying and shearing the shaped jacket; falling down the product, namely, enabling the modified and shorn jacket to fall down from the continuous die. The production process of the jacket has the advantages that the materials are saved, the production cost is decreased, the bearing capacity is high, etc.