Product Category

　　Product Highlights
　　1. Strong operational adaptability: Optimized for open-pit mining conditions involving overburden, weathered rock, and medium-hard rock, balancing wear resistance with impact resistance.
　　2. Optimized tooth geometry: A streamlined tooth tip design reduces digging resistance and helps control the equipment’s fuel consumption.
　　3. Excellent interchangeability: Machined to exact OEM interface dimensions, it features tight fit tolerances with bucket ears and pins, ensuring easy installation and removal.
　 　User Pain Points
　　1. Excessive wear: In rock formations with high quartz content, standard bucket teeth experience excessive wear, placing significant pressure on spare parts inventory.
　　2. Root fracture: When encountering large isolated boulders or blasting blind spots, low-quality bucket teeth often suffer brittle fractures at the root, disrupting operational continuity.
　　3. Loose and worn bucket ears: Insufficient casting precision causes the bucket teeth to shake during operation, accelerating wear on the bucket ears and shortening the bucket’s service life.
　 　Solution
　　High-manganese steel or ultra-high-manganese steel, subjected to rapid, fully automated water‑toughening treatment, is selected. Leveraging the material’s tendency to work‑harden on impact, the cutting edge of the bucket teeth progressively increases in surface hardness during open-pit mining operations, thereby balancing wear resistance with toughness and reducing abnormal fractures.
　　 I. Product Description
　　This bucket tooth is a component for open-pit mining excavators (electric shovels/hydraulic shovels). It is produced using ceramic sand casting with well‑designed risers, resulting in high internal density. The root of the tooth has been locally thickened to withstand primary shear forces. Nondestructive testing is performed on key load‑bearing areas as a random inspection to ensure there are no casting defects such as porosity or slag inclusions.
　　II. Product Specification Sheet

　　 III. Product Features and Advantages
　　• Material stability: Spectral analysis at the furnace front controls chemical composition, ensuring manganese and carbon content remain within specified limits, while harmful elements such as phosphorus and sulfur are kept well below national standards, thereby guaranteeing acceptable microstructural integrity after water‑toughening treatment.
　　• Impact hardening: Under high-impact excavation conditions, the surface hardness at the tooth tip can increase from an initial HB180–220 to approximately HV500, with the wear-resistant layer gradually advancing inward as wear progresses.
　　• Ease of maintenance: The standardized locking groove design, manufactured according to the drawings, is compatible with common detent mechanisms, facilitating quick on-site replacement.
　　 IV. Production and Quality Assurance
　　• Premium Raw Materials: Carefully selected high-quality scrap steel and auxiliary materials—free of rust and oil—ensure the purity of the bucket teeth material at the source, laying a solid foundation for the work‑hardening performance of high‑manganese steel.
　　• Ultimate density: Utilizing ceramic sand combined with a large-diameter heating riser process, this effectively eliminates shrinkage porosity and cavities, ensuring a dense, uniform microstructure within the bucket teeth and enabling them to withstand large boulders and high‑load impacts without cracking.
　　• Precise melting: Melting is performed using a Fuji electric furnace from Japan, with real-time compositional verification via direct-reading spectrometry. Carbon and manganese contents are precisely controlled to ensure that the bucket teeth achieve the desired microstructure and mechanical properties after water‑toughening treatment.
　　• Flawless casting: A combination of 850°C ladle preheating and bottom-pouring casting technology effectively eliminates sand hole defects, ensuring that critical load-bearing areas such as the root of bucket teeth, as well as mounting holes, are smooth and free of casting imperfections.
　　• Strengthened metallography: A rapid water‑quenching heat treatment process is employed to obtain a single austenitic microstructure. This achieves a “hard outside, tough inside” condition for the bucket teeth—upon impact, the working surface hardens rapidly while the core retains high toughness, effectively preventing brittle fracture at the tooth root.
　　• Powerful shot blasting: This process removes residual sand from the surface and creates a compressive stress-hardened layer, further enhancing the wear resistance and fatigue life of the bucket tooth’s working face.
　　• Rigorous quality inspection: 100% magnetic particle and ultrasonic testing is performed on critical stress-bearing areas such as the tooth root to ensure there are no porosity or slag inclusions. At the same time, the dimensions of the bucket tooth mating holes and slots are strictly inspected to ensure precise pin‑to‑hole clearance, resulting in a secure installation that prevents looseness or movement.
　　• Transparent Delivery: A full-process quality traceability system has been established, allowing real-time tracking of production progress via QR code scanning, with complete visibility and traceability from material input to shipment.
　　V. Why Choose Us
　　• Extensive supply experience: We have long-term partnerships with numerous open-pit coal and metal mines across northern, northwestern, and southwestern China, and are well-versed in how different rock and ore properties affect bucket tooth wear.
　　• Quality Control: From raw material receipt to finished product shipment, a comprehensive traceability system is in place, with material inspection reports provided for each batch.
　　• Practical service: We do not exaggerate product lifespan; instead, we recommend suitable materials based on actual operating conditions and provide sensible suggestions for spare parts inventory.
　　 VI. Frequently Asked Questions (FAQ)
　　Q1: What is the minimum order quantity for high-manganese steel bucket teeth?
　　Minimum order quantity: 1 piece. Bulk purchases qualify for volume discounts; we recommend stocking up based on the number of excavators and operating conditions.
　　Q2: What is the typical lead time for bucket teeth?
　　Customization based on your drawings or production using existing molds; standard lead time is 45–60 days. Expedited processing is available for urgent orders upon negotiation.
　　Q3: Under what operating conditions are high-manganese steel bucket teeth most suitable?
　　It is ideally suited for high‑intensity impact mining in open‑pit operations, such as overburden removal, weathered rock, and medium‑hard, quartz‑rich strata. Leveraging its impact‑hardening properties, the material becomes progressively harder with each strike and exhibits enhanced wear resistance over time.
　　Q4: How can we ensure that the root of the bucket tooth does not crack?
　　First, strict heat treatment yields a single austenitic microstructure with exceptionally high core toughness. Second, the tooth root is locally thickened during casting and undergoes 100% magnetic particle inspection to ensure there are no internal hidden cracks, enabling it to withstand extreme shear forces.