Cone Crusher torch ring

This paper details the cone crusher torch ring, a vital sealing and protective component situated between key assemblies like the adjustment ring and main frame, or moving cone and fixed cone. Its primary functions include high-temperature sealing (withstanding up to 150°C), preventing contamination, thermal insulation, and vibration absorption, requiring heat resistance, oil resistance, and mechanical strength.​ The torch ring has a composite structure, consisting of a metal framework (low-carbon or alloy cast steel) with a U/L-shaped cross-section, a sealing liner (high-temperature rubber, graphite composite, or metal-reinforced felt), retention grooves, flange edges, and optional vent holes.​ The metal framework is produced via sand casting: material selection (Q235 or ZG230–450), pattern making with shrinkage allowances, green sand molding, melting and pouring (1450–1480°C), cooling and shakeout, and annealing for stress relief. The machining and manufacturing process involves framework machining, sealing liner preparation, liner bonding with heat-resistant adhesive, finishing, and optional surface treatment.​ Quality control includes material testing (chemical composition, tensile strength, hardness), dimensional checks (CMM for accuracy), bond strength testing, seal performance evaluations (pressure and heat cycling), and visual/functional inspections. These ensure the torch ring provides reliable sealing in high-temperature, high-vibration conditions, safeguarding internal components and ensuring efficient crusher operation.