Product Category

　　Product Highlights
　　• Integral casting for complex shapes in a single step: High-quality wear-resistant material is cast as a single piece, forming intricate curved surfaces in one operation. This eliminates the need for welding or extensive machining, ensuring both structural integrity and dimensional accuracy of the guard plate.
　　• Scientific curved‑surface design for all‑round protection: The arc‑shaped structure seamlessly conforms to the crusher’s intricate internal cavity, ensuring complete coverage with no blind spots and eliminating localized wear.
　　• High-strength bolt fastening ensures secure, vibration‑resistant installation: The surface features precisely machined bolt holes arranged in a uniform pattern, perfectly matching high‑strength bolts. This design delivers stable, vibration‑free performance even under high‑frequency operating conditions, while enabling quick and convenient disassembly and replacement.
　　User Pain Points
　　Traditional guard plates suffer from three major pain points: ① insufficient wear resistance of the material, leading to frequent replacements and increased downtime; ② poor alignment between the guard plate and the frame, resulting in localized protection gaps that damage the frame itself; ③ loose bolt fastenings that loosen and fall off under high‑load vibrations, compromising operational safety.
　　Solution
　　Our company’s frame guard panels are cast from high-manganese steel, leveraging work‑hardening to achieve a “hard exterior, tough interior” structure. A scientifically engineered curved design ensures a seamless fit within the frame cavity, while high‑strength bolts provide secure, stable mounting.
　　I. Product Description
　　The crusher frame guard plate is designed to tightly encircle and secure the frame cavity above and around the crusher’s main shaft, providing protection against material spatter, intense friction, and accidental impacts, thereby safeguarding the core frame structure. It is compatible with single‑cylinder and multi‑cylinder hydraulic cone crushers from Metso, Sandvik, and leading domestic brands. The material is high‑quality high‑manganese steel, with a corrosion‑resistant, wear‑proof coating on the surface.
　　II. Product Specification Sheet

　　III. Product Features and Advantages
　　Integral casting for one-step formation of complex shapes: Manufactured by integral casting from high-quality wear-resistant material and suitable for sand mold casting, it produces intricate curved surfaces in a single piece—eliminating the need for welding or extensive machining and ensuring the protective plate’s overall integrity and dimensional accuracy.
　　• Excellent toughness and resistance to installation‑induced stress cracking: The material exhibits outstanding elongation, ensuring that the frame’s protective panels remain intact even under conditions such as vigorous impacts from materials, localized prying caused by material jamming, or hammering during replacement. As a result, they are less prone to chipping or brittle fracture, offer high tolerance for installation errors, and are resistant to damage during on‑site assembly.
　　• Superior thermal expansion matching compared to cast iron: The selected material has a coefficient of linear thermal expansion close to that of carbon steel frames. During the temperature cycling associated with crusher start-up and shutdown, the liner plates and frame deform in good coordination, reducing the likelihood of bolt loosening or liner warping due to thermal stress. This makes it particularly suitable for large-scale structures and outdoor applications with significant temperature fluctuations.
　　• Scientific curved‑surface design for all‑round protection: The arc‑shaped structure seamlessly conforms to the crusher’s intricate internal cavity, ensuring complete coverage with no blind spots and eliminating localized wear.
　　• Repairable, reducing replacement costs: Local deformations can be corrected by cold straightening, and worn surfaces can be rebuilt to their original shape using appropriate welding electrodes. This is particularly feasible for non‑mating surfaces, whereas cast‑iron guard plates, once damaged, are typically scrapped. For end users, this translates into significant cost savings.
　　• Non-magnetic and non-conductive, compatible with magnetic separation processes: does not interfere with the magnetic field distribution, making it suitable for applications where iron removers or magnetic separators are installed after crushing lines, as well as for upstream stages of dry magnetic separation and workstations with specific requirements for the magnetic field environment.
　　IV. Why Choose Us
　　• Specializing in wear‑resistant castings for harsh operating conditions: We are not a foundry chasing short‑term transactions; instead, we are firmly rooted in China, focusing on the R&D and manufacturing of wear‑resistant castings for demanding applications such as mining and power generation. Take the crusher frame guard plate as an example: tailored to the specific protective requirements of cone crusher frames, this component is crafted from high‑manganese steel. Under conditions of material spatter, intense friction, and accidental impacts, its surface rapidly work‑hardens to a hardness of HB 500–600, while the core retains exceptional toughness. Its scientifically engineered curved profile fits seamlessly with the internal cavity of the frame, and high‑strength bolts ensure secure, vibration‑resistant fastening even under frequent dynamic loads. This design effectively safeguards the core frame structure against wear, reducing downtime risks at the source.
　　• We let the data speak, not empty talk of perfection: Casting processes are complex; we don’t promise “zero defects,” but we do promise “zero excuses.” Every batch of frame guard plates undergoes a full inspection process—including precise measurement of curved surface radii, verification of bolt hole positions, and magnetic particle testing—to ensure a perfect fit with the frame’s internal cavity. Complete test reports are provided, demonstrating our accountability through data and action.
　　• Long-term partnerships—delivery is just the beginning: Our digital systems let you track production progress in real time, eliminating opaque operations; we respond immediately to quality concerns without delay; and every shipment includes a detailed test report for your quality records. We believe that a supplier’s attitude toward resolving issues truly reflects its value.
　　V. Production and Quality Assurance
　　• Premium Raw Materials: Carefully selected high-quality, rust-free, oil-free scrap steel and punched billets ensure the purity of the frame guard plate material at the source, laying the foundation for work-hardening in high-manganese steel.
　　• Ultimate density: Ceramic sand plus a large-diameter heating riser eliminates shrinkage porosity and cavities; the liner’s interior is densely compacted, enabling it to withstand continuous ore impacts without cracking.
　　• Precision melting: Melted in a Fuji electric furnace from Japan, with real-time compositional verification via spectrometer to precisely control carbon and manganese levels, ensuring work-hardening capability and impact toughness.
　　• Flawless casting: 850°C baking of the ladle combined with bottom pouring eliminates sand‑hole defects, ensuring smooth arc surfaces on the protective plates and bolt holes free of casting imperfections.
　　• Strengthened metallography: 30-second rapid quenching produces a uniform austenitic microstructure, achieving “hard exterior, tough interior”—the surface is hardened to HB500–600 while the core retains high toughness, preventing fracture under impact from flying debris.
　　• Powerful shot blasting: cleans sand from the surface while hardening it, enhancing the wear resistance of the guard plate’s surface.
　　• Rigorous quality inspection: Magnetic particle testing ensures precise curvature of the arc surface and accurate bolt-hole alignment, achieving a perfect fit within the frame’s internal cavity.
　　• Transparent delivery: Scan a code to track progress in real time, with full visibility from material input to shipment.
　　VI. Frequently Asked Questions (FAQ)
　　Q1: What material is recommended for scaffold guardrails?
　　ZG120Mn13Cr2 high-manganese steel is recommended, offering both wear resistance and impact resistance.
　　Q2: Which models are compatible?
　　Compatible with single-cylinder and multi-cylinder hydraulic cone crushers from Metso, Sandvik, and various mainstream domestic brands.
　　Q3: Can non-standard specifications be customized?
　　Customization based on provided drawings is supported.
　　Q4: What is the minimum order quantity?
　　Negotiable; bulk purchases qualify for discounts.
　　Q5: Can the customer’s logo be printed on the packaging?
　　Yes. We support neutral packaging and cast lettering on the non-working surfaces of castings.
　　Q6: What is the delivery time?
　　Custom fabrication of crusher frame guard plates from drawings takes 45–60 days. Expedited service can be arranged for urgent orders.