A method for manufacturing a cold-drawn sealing gasket

Abstract

The invention discloses a method for manufacturing a cold-drawn sealing gasket, which comprises the following steps: Step 1, making a strip: crimping one end of a steel strip (1), cutting the braided rope (2) according to the length of the steel strip (1) and Put it into the curled steel belt and wrap it tightly; step 2, fix the drawing die: fix the drawing die on the lathe; step 3, drawing the die forming: the strip material is in contact with the drawing die part, and the strip material and the center line of the drawing die are at 7° ~15° included angle, and then the lathe is drawn into the part in the drawing die; step 4, straightening: straighten the part, and that's it. In the drawing die forming, the lathe adopts the automatic cutting method to make the strip pass through the drawing die at a constant speed, and first draw the strip into a circular cross-section, and then draw the strip into a part of the desired shape. The parts processed by the method of the invention have good dimensional consistency, seldom appear out-of-tolerance phenomenon, and the qualified rate of the parts is improved.

Description

technical field [0001] The invention belongs to the field of manufacturing technology, and in particular relates to a method for manufacturing a cold-drawn sealing pad. Background technique [0002] The sealing gasket is a small part on the engine, and the sealing gasket has a very important purpose on the engine, and it is required to have a very good sealing performance under high temperature. In the prior art, the sealing pad manufacturing process is processed by stamping, and the corresponding mold is designed according to the length and shape of the part, and the mold is fixed on the punching machine. When the equipment is started, a great pressure is exerted on the part, and the part is formed in the mold. From the mechanical point of view, when the parts are stamped and formed, they are affected by the stamping force of the die and the supporting force of the braided rope. Due to the heat treatment and softening treatment, the plasticity of the parts is improved, and...

AI Technical Summary

Problems solved by technology

Due to the heat treatment and softening treatment, the plasticity of the parts is improved, and plastic deformation and permanent deformation occur under pressure. scrap parts

After modifying the mold, the size of the interface will be partially oversized after several trial productions

In addition, if the length of the part is very long, when the traditional stamping method is used for processing, the designed mold length is very long and must match the part, which will increase a lot of difficulties in the mold manufacturing process and increase the cost

Therefore, using this process to process sealing gaskets has poor dimensional stability and low consistency, resulting in too many waste products, reduced work efficiency, and increased costs.

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