Explore our certified range of chromium carbide overlay plates, self-shielded flux-cored wires, and automated surfacing machinery engineered for extreme wear environments.
An in-depth technical analysis on how high-chromium overlay cladding mitigates abrasive, erosive, and corrosive destruction in extreme industrial environments.
Industrial machinery operating within cement manufacturing, mining extraction, steel rolling, and power generation faces relentless mechanical degradation. Among the diverse mechanical wear mechanisms—abrasion, surface fatigue, impact erosion, and high-temperature oxidation—abrasive wear accounts for over 60% of total equipment downtime globally. To combat this, modern surface engineering relies heavily on contact welding, hardfacing, and cladding technologies to deposit high-alloy wear-resistant layers onto ductile, structural carbon steel backings.
At the core of this metallurgical defense is the formation of hypereutectic chromium carbide microstructures. During the automated surfacing process, solid-core or flux-cored welding wires deposit an alloy matrix enriched with Chromium (Cr), Carbon (C), and auxiliary carbide formers such as Molybdenum (Mo), Niobium (Nb), and Boron (B). As the weld pool solidifies, primary M7C3 chromium carbides crystallize out of the melt prior to the matrix eutectic reaction. These hexagonal needle-like and rod-like primary carbides achieve microhardness levels ranging from 1500 to 1800 HV, anchored within a tough, strain-hardenable austenitic or martensitic matrix (45 to 65 HRC).
By maintaining a chromium-to-carbon ratio optimized for primary M7C3 carbide precipitation, our overlay plates withstand harsh gouging abrasion and high-velocity mineral slurry sliding without premature spalling or micro-chipping.
Controlled transverse relief cracking occurs naturally during solidification. These micro-cracks relieve thermal residual stresses inherent in high-alloy welding, preventing plate distortion while preserving underlying structural base metal integrity.
Utilizing automated 4-gun surfacing technology, weld penetration into the carbon steel base plate is strictly regulated to keep dilution below 10%, ensuring maximum hardfacing chemistry performance right from the first overlay pass.
A trusted global leader in wear-resistant metal R&D, automated surfacing equipment fabrication, and comprehensive field repair services since 2010.
Founded in 2010 in Tangshan, Hebei Province—the heartland of China's heavy steel manufacturing industry—Tangshan Runxing Machinery Co., Ltd. has established itself as an authoritative manufacturer and engineering service provider specializing in surface hardfacing and contact welding solutions.
Our comprehensive production facility integrates raw material metallurgy, flux-cored wire drawing, automated overlay plate cladding, precision CNC fabrication, and full-scale roller refurbishment capabilities. We adhere to the core corporate principle of "Integrity, Superior Quality, Innovation & Sustainable Development," supplying heavy industry across Russia, Central Asia, Southeast Asia, South America, and Africa.
To deliver flawless international trading transactions, all export business is fully authorized and managed by Hebei Yuwan International Trade Co., Ltd. This specialized export arm oversees global sales logistics, customs clearance, shipping documentation, and multi-currency payment processing. This strategic division of labor allows Runxing Machinery to focus 100% of its resources on advanced metallurgical research, quality control, and manufacturing precision.
Engineered to deliver maximum operational efficiency and minimal wear-related maintenance cycles across heavy processing industries.
Composite material wear plates made of a structural carbon steel backing plate (Q235B / Q345B) and a hard weld overlay. Models such as RX®wp 7600 strictly comply with DIN 8555 standards. Featuring high carbide concentrations, these plates are easily formed, cut via plasma, and welded into custom hopper liners, fan housings, and cyclone separators.
Explore CCO Wear Plates →Self-shielded and gas-shielded hardfacing flux-cored wires formulate high-chromium and complex carbide deposits. Formulated for resisting extreme grinding abrasion with low to medium impact. Excellent arc stability, low spatter generation, and easy slag removal make them ideal for on-site rebuilding of worn crusher rolls and bucket teeth.
Explore Flux-Cored Wires →High-degree CNC automation machinery featuring a 10.2-inch industrial touch screen interface. Equipped with four synchronized welding torches that operate independently or simultaneously. Supports solid-core, flux-cored, self-shielded, open-arc, metal powder addition, and submerged arc welding processes with wide and narrow oscillation control.
View Welding Equipment →Advanced Plasma Transferred Arc (PTTA) materials and specialized flux-cored wires formulated for precision contact cladding. Designed for tight-tolerance components requiring minimal heat input, high deposit purity, and exceptional resistance to combined thermal and mechanical degradation.
Discover PTTA Solutions →Runxing Machinery provides complete turnkey engineering services, including CAD/CAM design, plasma cutting, rolling, bending, countersinking, and structural assembly. We supply fully fabricated wear components ready for direct bolt-in installation during planned plant overhauls.
Engineering Services →Specialized repair procedures for two main categories: steel mill rolls (continuous casting, pinch rolls, conveyor rolls) and grinding rolls (coal pulverizers, vertical roller mills, press rollers). Extending component lifecycle by 200% to 400% through automated circumferential sub-arc contact cladding.
Explore Roll Repair →Proven operational performance across global cement plants, mining pits, steel foundries, power stations, and logistics ports.
Critical equipment uptime defines cement plant profitability. Our CCO plates and hardfacing wires protect raw meal chutes, vertical roller mill tables, separator guide vanes, and clinker cooler impact plates from intense particle gouging.
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Mine operators require heavy-duty wear liners capable of withstanding severe ore sliding impact. We deliver Runxing RX-m series high-hardness CCO plates tailored for excavator bucket liners, dump truck beds, and primary crusher hoppers.
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Steel making environments combine elevated thermal stress, heavy loads, and scale abrasion. Our roll resurfacing service and high-temperature alloy wires extend the life of continuous caster rollers, blast furnace skip cars, and sinter screens.
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Protecting coal pulverizer mill rolls, exhauster fan blades, fly ash conveying pipes, and boiler feed hoppers against high-velocity pulverizer erosion, significantly extending maintenance cycles.
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Ports handling iron ore, coal, and aggregates experience rapid chute wall thinning. Our bimetallic composite wear plates and hardfaced grab bucket edges resist salt-spray corrosion and abrasive material drag.
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Complementing metal hardfacing, we supply high-purity sintered alumina ceramic liners optimized for fine particle erosion in pneumatic transport ducts where impact loads are minimal.
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Engineered wear pipe elbows, complex conical transition liners, and multi-segment crusher wear shoes manufactured according to client technical drawings.
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Deployment of automated mobile surfacing units directly to plant sites for in-situ repair of grinding tables, crusher rolls, and heavy structural wear components.
View Industry Solutions →How next-generation material science, robotic automation, and green manufacturing shape the future of hardfacing surface engineering.
Development of multi-element alloy formulations incorporating Titanium, Niobium, Tungsten, and Boron. These complex carbide networks produce refined nano-grain structures that drastically improve fracture toughness without sacrificing HRC surface hardness.
Integrating real-time laser vision sensors with our 4-gun automated surfacing machines. Neural-network algorithms dynamically adjust arc voltage, wire feed rate, and torch swing amplitude to compensate for base metal surface irregularities.
Pioneering green welding flux formulations that reduce hexavalent chromium and total welding fume emission rates by over 40%, safeguarding operator health while meeting stringent international environmental regulations.
How Tangshan's robust industrial ecosystem delivers unmatched lead-time predictability, competitive pricing, and total cost of ownership (TCO) optimization.
Tangshan's unique geographic location in Hebei Province puts Runxing Machinery at the epicentre of global steelmaking and heavy metallurgical manufacturing. This proximity grants direct, instant access to top-grade structural steel plate mills, high-purity ferrochromium alloys, and specialized flux ingredients—eliminating raw material bottlenecks and guaranteeing predictable manufacturing lead times.
By leveraging fully automated 4-gun surfacing lines and continuous flux-cored wire drawing towers, we achieve high yield rates with minimal material waste. International buyers benefit from substantial cost efficiency without compromising on European DIN 8555 quality standards.
Investing in high-grade chromium carbide overlay plates vs traditional quenched AR400/500 steel plates over a 24-month operational cycle:
*Result: Up to 65% total maintenance expenditure savings over 2 years due to reduced shutdown labor and uninterrupted plant throughput.
Demonstrating industry engagement, strategic partnerships, and technical collaboration across global markets.
The specialized industry portal www.runxing-machinery.com entered its official trial operation phase. Built by Tangshan Runxing Machinery Co., Ltd., the website functions as a one-stop global procurement platform for hardfacing materials, automatic welding machinery, and wear liner assemblies.
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From September 2 to 6, 2024, Runxing Machinery participated in the South Africa International Construction Machinery, Mining Machinery, and Power Energy Exhibition in Johannesburg, presenting automated surfacing rigs and CCO plates to African mining conglomerates.
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Yuan Shaoqiang (Dean of Tangshan University), Li Jing (Vice Dean), and Professor Yang Yuehui (Metal Materials & Forming Technology Lead) visited Runxing Machinery. GM Li Xiuhua and Vice GM Cui Jianying hosted the delegation to deepen university-enterprise R&D on hardfacing alloy formulations.
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Since 2019, Tangshan Runxing Machinery has been certified as a qualified agent for VAUTID, Germany. Utilizing premium VAUTID welding consumables alongside our proprietary formulations guarantees European-tier metallurgical performance for high-end wear components.
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From April 24 to 27, 2023, Runxing Machinery participated in EXPOMIN in Santiago, Chile—the world's second-largest professional mining exhibition—establishing supply partnerships with South American copper mining operators.
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Technical answers to common engineering, procurement, and application questions regarding contact welding and hardfacing products.
Select from our core hardfacing product categories below for technical specifications and direct factory quotes.
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