Automotive Shot Peening Applications:
1. Engine crankshafts, connecting rods, and camshafts: Shot peening creates a uniform residual compressive stress layer that improves resistance to torsional and bending fatigue, suppresses crack initiation and propagation, withstands the high-frequency alternating loads of engine operation, and extends the service life of core moving components.
2. Suspension springs, control arms, and swing arms: Shot peening relieves residual tensile stresses from forging and machining, improving impact resistance and corrosion-fatigue performance. It also helps reduce fatigue damage caused by road vibration, enhance suspension stability, and support safer, smoother driving.
3. Transmission gears and drive shafts: Shot peening refines the surface grain structure and improves the surface microstructure, significantly enhancing wear resistance on gear teeth and mating surfaces. It also helps reduce contact fatigue, pitting, and fretting wear, lowering the risk of transmission failures and ensuring reliable power transmission.
4. High-strength steel chassis and brake components: Shot peening improves fatigue and impact resistance, helping inhibit crack propagation caused by cyclic stresses. It also enhances structural strength and corrosion resistance, making these components better suited to challenging road conditions and prolonged heavy-duty use.
5. Fasteners and other connecting components: Shot peening improves the surface properties of bolts, welded parts, and hinges, enhancing fretting-fatigue resistance. It helps reduce wear, loosening, and sticking, improving assembly reliability and extending component service life.

We Understand Your Supply Requirements:
1. Mandatory compliance with industry-specific standards: The automotive industry requires high standardization on its supply chain. In addition to general-purpose standards, shot media suppliers must follow automotive-specific specifications. Leading automotive OEMs may also require products to comply with international standards, such as SAE standards, AMS2431, and the military specification MIL-S-13165.
2. Strict technical requirements for shot media: Automotive OEMs impose strict technical specifications on the fundamental performance of peening shots, as the properties of shot materials directly determine the final surface treatment quality and service life of processed components.
3. From “Selling Products” to “Providing Solutions”: Automotive customers increasingly prefer partners that offer comprehensive technical support, including process recommendations, testing capabilities, assistance in developing specifications, and access to R&D and testing centers.
4. New demands driven by electric vehicles: The growth of the new energy vehicle market is creating new opportunities for shot media, along with new technical requirements. These include media for processing lightweight components, specialty media such as stainless steel and aluminum shot, and premium media that is high-purity, fine-grained, and low in impurities.

Tonglve metal's Solutions:
1. As a leading metal abrasive manufacturer in China, we manufacture our products in strict accordance with automotive industry standards and international specifications, including AMS2431/8, MIL-S-13165, SAE J441, DIN 8201, and VDFI 8001. Our products meet the supplier qualification requirements of major automakers worldwide.
2. Tonglve’s independently developed HD cut wire shot delivers a service life three times that of cast steel shot and 1.5 times that of standard cut wire shot, cutting overall production costs by more than 20%.
3. Unlike conventional media suppliers, Tonglve provides end-to-end technical services: customized process solutions, professional testing services, equipment and media selection with application guidance, and on-site training and technical support.
4. With deep roots in the new energy and lightweighting markets, we supply low-damage media such as stainless steel shot and aluminum shot for new energy components including aluminum alloy battery trays and motor housings, meeting the surface treatment needs of lightweight materials.

Typical Applications:
1. Powertrain system, chassis system, body system, etc.
2. Rack bars, springs, wheel hubs, and fasteners.
3. Crankshafts, stabilizer bars, bumpers, and bearings.
4. Connecting rods, control arms, door hinges, and brake discs.
5. Camshafts, steering knuckles, seat frames, and universal joints.