Brief Introduction To The Production Process of GRWA Stainless Steel 409 Muffler

I.Material Preparation

    1. Material selection: The selection of T-409 stainless steel raw materials is brighter than the ordinary SS409 surface to ensure that the material has good corrosion resistance, high temperature resistance and mechanical strength.
    2. Pre-treatment: Perform rust removal, cleaning, and drying treatment on the raw material to ensure the welding quality and product performance.

II.Fabrication and Welding

    1. Cutting: Cutting the required material according to the design requirements. The cutting process mainly uses laser cutting or plasma cutting to ensure the accuracy of the cutting size and shape.    

    2. Stamping: Stamp the cut materials to obtain the various parts of the  muffler. The stamping process mainly involves the analysis of the part design, mold manufacturing, material selection, etc. Through the stamping process, a large number of parts can be quickly and accurately manufactured.

    3. Bending: Bend the stamped parts to meet the shape requirements of the  muffler. The bending process is usually carried out using a hydraulic bending machine or mechanical bending machine by applying force to bend the parts into the desired curve.
    4.Welding: each part is welded to form a complete muffler structure. Using unique tooling positioning welding process for fine welding, the surface is beautiful and smooth, the solder joint is uniform and no break point, the sealing is strong, the weld is firm, and the service life of the silencer is effectively extended.

III.Post-processing and Inspection
    1. Grinding and Polishing of Weld Seam: The weld seam is polished to improve the appearance quality and corrosion resistance of the product.
    2. Acid Washing and Passivation: The surface of the weld seam is subjected to acid washing and passivation to further improve the product's corrosion resistance.
    3. Surface treatment: Spray treatment as needed, generally polishing, wire drawing, titanium plating, spray painting (black paint, silver paint and red paint) to enhance the beauty and durability of the product; At the same time, apply anti-rust oil to extend the service life.

    4. Quality Inspection: Quality inspection is carried out on finished products to ensure that product quality meets the standard requirements. The assembled  mufflers are subjected to various performance and quality inspections, including weld quality inspection, appearance quality inspection, corrosion resistance inspection, noise test, vibration test, pressure test, and leakage test, to ensure that the  mufflers meet the design requirements in terms of quality and performance.

IV.Packaging and Shipment
    1. Packaging: The qualified products are packaged, usually in cartons or wooden boxes, and marked with specifications and models to ensure that the products are not damaged during transportation and storage.
    2. Shipment: The packaged products are shipped for sale or delivered to customers for use.

V.Summary
    The manufacturing process of  mufflers is a complex industrial process that requires the cooperation of various equipment. The main equipment includes laser cutting machines, plasma cutting machines, presses, hydraulic bending machines, mechanical bending machines, welding equipment, spraying equipment, electroplating equipment, surface treatment equipment, assembly lines, testing equipment, packaging equipment, etc. In this process, the coordinated use of various equipment ensures that the  mufflers meet the design requirements in terms of quality and performance.

    GRWA has a wide range of high-quality automotive  mufflers, which have won the trust and recognition of many customers with their superior materials, stable performance, excellent corrosion resistance, unique and eye-catching appearance, and comfortable driving experience. Choose GRWA to provide effective solutions for your vehicle performance. Welcome to inquire.