Wheel Shelling in LHB coaches скачать в хорошем качестве

Wheel Shelling in LHB coaches

⚙️ Why Shelling Occurs in LHB Coaches LHB coaches typically use: FIAT bogies Disc brake system (instead of tread brake) Higher operational speeds (up to 130–160 km/h) Common causes include: 1️⃣ Rolling Contact Fatigue (RCF) High axle loads High-speed operations Repeated stress cycles at wheel–rail contact 2️⃣ Material & Hardness Issues Improper heat treatment Non-uniform hardness Metallurgical defects 3️⃣ Rail Conditions Poor rail grinding Corrugation Improper rail profile 4️⃣ Operational Factors Frequent braking Sharp curves Slipping during acceleration 5️⃣ Disc Brake Effect Unlike ICF coaches (tread braking), LHB uses disc brakes: Wheel tread does not get self-cleaned by brake blocks Surface cracks propagate faster 📉 Effects of Wheel Shelling Excessive vibration Passenger discomfort Increased noise Higher dynamic forces on track Risk of wheel fracture (if severe) Increased wheel reprofiling frequency 🛠️ Preventive Measures ✔ Improved Wheel Material Better steel grade (ER8 / ER9 type) Controlled heat treatment ✔ Rail Grinding Regular preventive grinding to remove rail surface defects ✔ Wheel Reprofiling Timely turning on Wheel Lathe Monitoring flange & tread wear ✔ Lubrication Flange lubrication systems ✔ Monitoring Ultrasonic testing Vibration monitoring RCF inspection Video related to wheel shelling channel name, #Railwaytechnicalknowledge. 🚆 #RAIL TECHNICAL KNOWLEDGE BY PAPPU CHOUBEY Welcome to RAIL TECHNICAL KNOWLEDGE BY PAPPU CHOUBEY – a dedicated YouTube channel focused on delivering complete and practical technical knowledge of Indian Railways coaches, especially LHB and ICF coaches. This channel is specially designed for Railway employees, RRB aspirants, technical students, and railway enthusiasts who want to build strong conceptual and practical understanding of railway coach technology. The main objective of this channel is to simplify complex railway systems and explain them in easy Hindi language with real field examples, diagrams, images, and animation-based explanations. We focus on concept clarity, practical troubleshooting knowledge, and exam-oriented technical preparation. This channel is highly useful for: ✔ Railway Employees (Mechanical / C&W / Electrical) ✔ RRB ALP, Technician, JE, SSE Aspirants ✔ LDCE / GDCE / Competitive Exam Candidates ✔ ITI & Diploma Mechanical Students ✔ General Public interested in Railway Technical Awareness 🔹 LHB Coach Technical Topics LHB coaches are modern high-speed coaches used widely in Indian Railways. On this channel, we cover complete technical aspects such as: • Introduction and features of LHB Coach • Comparison between LHB and ICF Coach • FIAT Bogie complete construction and working • Primary Suspension system • Secondary Suspension (Air Spring) • Air Spring working principle • Levelling Valve function and operation • Installation Lever function • CBC (Center Buffer Coupler) construction and mechanism • Stiffener Plate function in CBC • Draft Gear mechanism • Brake Cylinder working and BC pressure charging system • Distributor Valve working • Control Reservoir and Auxiliary Reservoir functions • WSP (Wheel Slide Protection) system • Phonic Wheel function • Dump Valve / Anti-Skid valve working • Wheel Shelling (RCF damage) • Wheel Flat and Skid defects • Wheel profile measurement process • Condemning diameter of LHB wheels • Brake Disc working • Axle-mounted Disc Brake • Hand Brake mechanism • Underframe components • Side Buffer and Anti-Climber • Bogie Frame construction • Yaw Damper function • Vertical and Lateral Dampers • Coach height adjustment • Shop Schedule 1 (SS-1), SS-2, SS-3 Po 👉 Subscribe now and grow your Railway Technical Knowledge. #RAIL_TECHNICAL_KNOWLEDGE    / @pappukumarchaubey-h4c