Premium chromium alloy and tungsten carbide flux-cored welding wires engineered for extreme abrasion resistance and low structural impact.
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High-chromium self-shielded wires designed for on-site overlay welding without external shielding gas. Ideal for harsh open-field maintenance.
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Runxing RX-m Series specifically designed for mining chutes, cement hoppers, and heavy-duty wear-resistant liners with extreme hardness.
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Premium structural steel backing combined with a dense, wear-resistant overlay, meeting DIN 8555 specifications for high-impact protection.
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Optimized weld overlay steel plates with high volume fraction of primary M7C3 chromium carbides for extreme grinding environments.
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Composite overlay plates consisting of structural steel backing and hard weld surfacing, fully compliant with DIN 8555 metallurgy standards.
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Engineered for extreme stress grinding abrasion. Formulated with key carbide formers to resist sliding friction and structural shear.
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Ultra-precise plasma-transferred arc surfacing system designed for cladding complex components with high-density tungsten carbide powders.
See more products »In heavy industrial sectors such as mining, bulk material handling, cement manufacturing, steel refining, and dredging, mechanical components are continuously subjected to severe degradation mechanisms. Among these, sliding abrasion, severe impact, and high-temperature oxidation represent the primary contributors to premature component failure and unplanned operational downtime. Traditional steel alloys and simple quenched plates no longer meet the economic and physical requirements of modern industrial operations.
As a premier manufacturer and supplier of hardfacing technologies, Tangshan Runxing Machinery Co., Ltd. specializes in the synthesis and application of Tungsten Carbide Overlay (TCO) and Chromium Carbide Overlay (CCO) wear systems. By leveraging advanced metallurgy and precision thermal deposition techniques, we produce composite materials that significantly extend the life cycles of industrial components. Our material formulations are developed to address specific sliding and erosive wear profiles, delivering high information gain and engineering superiority to global procurement teams.
Founded in 2010, Tangshan Runxing Machinery Co., Ltd. has established itself at the forefront of surface engineering. Our authority and expertise are supported by structural partnerships, including a six-year consecutive qualification as an authorized partner for VAUTID (Germany)—a globally recognized authority in wear prevention. We operate on a dual-focus model: continuous academic research in collaboration with institutions such as the **Tangshan University Metal Materials and Forming Technology Research Group**, combined with modern industrial manufacturing (China Factory 4.0). All our export operations are handled with absolute compliance through Hebei Yuwan International Trade Co., Ltd., guaranteeing flawless logistical execution, custom clearance, and strict quality documentation for our global clientele.
The field of industrial surface protection is undergoing rapid transformation, moving from manual stick-electrode hardfacing to highly controlled robotic additive processes. Our engineering roadmap outlines the technological advancements that will shape wear protection systems over the next decade:
Traditional welding methods can lead to excessive dilution of the base material into the overlay, reducing its wear resistance. Our PTTA (Plasma Transferred Arc Additive) technology uses a high-energy plasma arc to deposit tungsten carbide and nickel-matrix alloy powders with dilution rates under 5%. This technique creates a highly concentrated carbide layer with minimal heat-affected zones (HAZ).
We are currently developing next-generation overlays that incorporate sub-micron and nanostructured carbides. By refining the grain size of chromium and tungsten carbides, we can improve both fracture toughness and abrasion resistance, overcoming the trade-offs typical of conventional materials.
In applications like iron making and cement calcination, temperatures often exceed 600°C. Standard chromium carbide overlays can experience matrix softening at these levels. Our research focuses on developing iron-nickel-base superalloy matrices enriched with niobium and molybdenum, which maintain their structural integrity at temperatures up to 850°C.
Tangshan Runxing Machinery Co., Ltd. was founded in 2010 in Tangshan, Hebei Province. We focus on the R&D, production, and on-site construction of hardfacing wear-resistant metal products. Our main product line includes chromium carbide overlay (CCO) wear plates, custom wear liners, wear-resistant pipes and fittings, hardfacing flux-cored welding wires, automatic hardfacing equipment, and industrial roller repair services.
We operate under a business philosophy of "Integrity, Superior Quality, Innovation & Sustainable Development," backed by advanced metal surface hardfacing technologies. We provide customized wear solutions for cement, steel, mining, port, and dredging industries globally, with a strong market presence in Russia and Central Asia.
All export transactions are managed through Hebei Yuwan International Trade Co., Ltd. This dedicated trading company handles customs clearance, international shipping, documentation, and payment collection. This allows our factory to focus entirely on quality assurance, product development, and meeting delivery timelines.
Maintaining equipment availability is critical for cement plant operations. Our wear-resistant overlays help ensure continuous operation of key equipment, minimizing unplanned downtime.
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We support mining operations in improving productivity and cost efficiency with durable wear plates for heavy-duty chutes, hoppers, and excavators.
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Steel production involves demanding working conditions, including raw mineral handling, high temperatures, and corrosion. Our solutions help protect equipment under these harsh conditions.
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We provide wear protection for fan blades, conveyor chutes, coal mills, dust removal systems, and hopper liners to support reliable power generation.
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Our overlays protect port loading, unloading, and yard-stacking machinery handling abrasive bulk materials from premature wear.
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We offer high-purity alumina ceramics as alternative options for processing environments with fine-particle erosion and low-impact conditions.
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We continually update our product catalog with new field trials and metallurgical materials tailored to challenging abrasive environments.
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We provide engineered wear analyses for complex equipment components, helping operators extend system lifespans under demanding conditions.
See Case Details »At our manufacturing facility in Tangshan, Hebei Province, we have implemented smart manufacturing practices to ensure product quality and production efficiency. Our factory is equipped with advanced automated overlay welding stations that run proprietary control algorithms to monitor temperature, feed speed, and weld overlay profile in real time.
Our global supply chain operations are managed in partnership with Hebei Yuwan International Trade Co., Ltd. By coordinating logistics, export documentation, and customs clearance through a single channel, we provide clear lead times and reliable delivery to our customers in Central Asia, Russia, South Africa, and South America.
For global procurement managers, purchasing wear protection materials involves balancing cost efficiency with technical performance. We provide comprehensive documentation to support the sourcing process, including:
We offer flexible logistics terms (FOB, CIF, DDP) and manage all export clearance requirements through Hebei Yuwan International Trade Co., Ltd., helping to streamline the procurement process.
A: The primary difference lies in the hardness and structural distribution of the carbide phase. Chromium Carbide Overlays contain M7C3 carbides with a typical hardness of HV 1200-1600, suspended in an iron-rich matrix. Tungsten Carbide Overlays use WC-Co or WC-Ni particles with a hardness exceeding HV 2000+. This makes TCO more suitable for extreme abrasive environments with fine, hard particles, while CCO offers cost-effective protection for general sliding abrasion and moderate impact.
A: Dilution occurs when the base metal melts and mixes with the weld overlay, lowering the overall carbon and chromium concentration. We manage this by optimizing our automated welding parameters, including current, voltage, travel speed, and weave width. For demanding applications, we utilize Plasma Transferred Arc (PTA) cladding, which maintains dilution rates below 5%, ensuring the top layer retains its specified hardness and carbide density.
A: The cross-checking cracks visible on the surface of most Chromium Carbide Overlays are a natural result of stress relief during cooling. These cracks relieve thermal tension and prevent the composite plate from warping. They terminate at the boundary with the ductile backing plate and do not affect the structural integrity or wear resistance of the overlay.
A: Yes. The carbon steel backing plate allows our composite plates to be welded directly to machine structures using standard low-hydrogen electrodes. They can also be cold-formed or rolled into cylinders and cones, provided the overlay surface remains on the inner diameter to keep the cracks in compression.
We have launched our updated web platform to provide procurement managers with direct access to technical specifications and product catalogs.
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We showcased our latest wear-resistant solutions and bimetallic CCO plates at the South Africa International Construction and Mining Exhibition in Johannesburg.
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Members of the Tangshan University Metal Materials Research Group visited our facility to review our recent work on automated overlay technologies.
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We have renewed our partnership with VAUTID Germany, ensuring our access to high-quality welding materials for our overlay products.
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We presented our bimetallic wear liners and overlay solutions to South American mining operators at the EXPOMIN exhibition in Santiago, Chile.
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Available in bulk sizes for continuous industrial overlay operations. High deposition efficiency with low clean-up requirements.
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Formulated for outdoor welding applications. Provides consistent slag release and smooth weld bead profiles under variable conditions.
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Bimetallic wear plates designed for severe abrasion and light-to-medium impact wear environments.
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Combines structural weldability with wear protection, suitable for chute liners and bulk conveying components.
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Engineered for dry-sand abrasion environments. Manufactured to flat tolerances for ease of installation.
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CNC systems featuring automatic voltage control and touch-screen adjustments, designed for cladding plates, grinding rollers, and press rolls.
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Precision fabrication of wear-resistant components from layout design to final plasma cutting, rolling, and mounting hole preparation.
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Reconditioning services for coal mill rollers, vertical mill tables, and steel mill rolls using hardfacing materials to restore original dimensions.
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Runxing machinery