Problems and Analysis of Shearing Process Optimization of Channel Steel

Problems and Analysis of Shearing Process Optimization of Channel Steel
1. Process reasons

The design capacity of the unit is 200,000 t/a, but the current output has reached 600,000 t/a. The problem of insufficient production capacity in the cooling bed area is very prominent. Compared with the production of angle steel, the cooling speed of channel steel is slower, so As a result, the temperature of the channel steel during shearing is high, and defects such as shoulder collapse, burr, and tearing are prone to occur, and the life of the shearing edge is greatly affected.

2. Reasons for the design of the scissors

The basic basis for the design of the channel steel shearing edge is the channel shape of the finished channel steel,. This design is prone to the following problems during the shearing process: First, the two shoulders of the channel steel are relatively thicker than other parts, and the required shearing force is also larger, and the cutting edge wears quickly. . This part has a relatively large amount of wear, resulting in a large shoulder gap and prone to shoulder collapse; second, compared with the waist of the channel steel legs, due to the influence of the shearing angle, when the shearing edge is worn, the legs are cut after cutting. When the shearing amount becomes smaller, the leg shearing changes from the usual shearing to tearing, and the end face of the channel steel leg is prone to burrs. In this way, the legs are basically stressed at the same time during shearing, the shearing force is large, and the shearing edge wears quickly. Tear, burr more phenomenon. The last two points are the main reasons that affect the shear quality of channel steel.