Tangshan Runxing Machinery Co., Ltd., located in the prominent industrial base of Tangshan, Hebei Province, has been at the forefront of metallurgical engineering since 2010. We specialize in the research and development, manufacturing, and on-site construction of hardfacing wear-resistant metal products. Our plant is dedicated to fabricating supreme quality Chromium Carbide Overlay (CCO) wear plates, custom processed wear liners, wear-resistant pipes and fittings, hardfacing flux-cored welding wires, and automatic hardfacing machinery.
By centering our business philosophy on **"Integrity, Superior Quality, Innovation & Sustainable Development"**, we leverage advanced surface hardfacing processes to serve major heavy industrial domains globally. To ensure frictionless international transactions, all export business is fully authorized and managed by Hebei Yuwan International Trade Co., Ltd., which handles customs clearances, shipments, documentation, and payment operations, allowing our technical plant to focus entirely on quality precision.
Authorized agent for world-renowned VAUTID Germany since 2019.
Precision welding machinery with 4-gun automated controls.
In the extraction, processing, and transportation of raw minerals, metals, and cement, mechanical parts are subjected to severe wear mechanisms. Traditional structural steels or even heat-treated alloys quickly fail under persistent high-stress abrasion. Our technical analysis investigates how Runxing's Chromium Carbide Overlay (CCO) plates extend operational lifespans by up to 10 times compared to structural steel.
Runxing's CCO wear plates are manufactured by deposit-welding high-chromium, high-carbon alloys onto a ductile structural steel backing (typically Q235B or Q345B). The key to the plate's wear resistance lies in its hypereutectic microstructure. During solidification, primary chromium carbides (specifically M7C3 type) crystallize out of the melt.
These M7C3 carbides possess a microhardness ranging between 1200 and 1600 HV (Vickers hardness), which is significantly harder than quartz and common mineral abrasives. The supporting matrix of eutectic chromium carbides and austenite provides the necessary toughness to prevent micro-fracturing under moderate impact.
Buyers often wonder about the cracks present on the surface of CCO plates. This is a natural physical phenomenon known as "relief checking." During the cooling process of the weld overlay, the chromium carbide layer shrinks at a different rate than the ductile steel backing.
To relieve these thermal stresses, transverse micro-cracks form naturally across the weld beads. These relief cracks do not propagate into the base steel substrate, nor do they diminish the plate's wear properties. In fact, they permit the plate to be cold-formed or rolled into complex shapes (such as chutes, pipes, and elbows) without introducing localized structural failure.
| Product Series | Nominal Chemistry (wt%) | Bulk Hardness | ASTM G65 Abrasion Loss |
|---|---|---|---|
| RX®wp 7600 Standard | Cr: 25-30% | C: 4.0-5.0% | Fe: Bal | 58 - 62 HRC | < 0.18g |
| RX®wp Extreme Alloy | Cr: 28-35% | C: 4.5-5.5% | Mn, Si, B | 60 - 64 HRC | < 0.12g |
| High-Temp Wear Series | Cr: 25-30% | Mo, W, V, Nb alloyed | 56 - 60 HRC (at 600°C) | < 0.22g |
Tangshan is the iron and steel capital of China, supplying a significant percentage of the country's metallurgical products. Sourcing CCO plates from Tangshan Runxing Machinery offers distinct global advantages:
As heavy industrial plants face tighter emissions regulations and increasing cost pressure, reducing down-time is paramount. The global market is transitioning from traditional carbon-steel structures towards modular composite wear protection.
Predictive Wear Management: Companies are increasingly requesting pre-fabricated liners designed from 3D CAD modeling. Runxing delivers pre-cut, CNC-processed, and counter-bored CCO plates that bolt directly into raw material paths, minimizing shut-down periods.
Composite material wearplate made of a structural steel backing & a hard weld surfacing. RX®wp 7600 is a composite material made of a structural steel backing and ahard weld surfacing,corresponding to DIN 8555.
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self shielded flux cored wire. high chromium alloy designed for resisting high stress grinding abrasion with low impact. wear plates
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self shielded flux cored wire. high chromium alloy designed for resisting high stress grinding abrasion with low impact. wear plates
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RX®Surfacing equipment Equipment with high degree of automation, high welding efficiency, small footprint, easy maintenance, power consumption, suitable for the production of various wear-resistant composite steel plate, surfacing system to choose different specifications of the solid-core, flux-cored, self-protection flux-cored wire, open-arc, plus powder, submerged arc for the production of a variety of wear-resistant composite steel plate, roll repair, grinding rolls, grinding disk repair, and so on. The equipment has advanced numerical control system through the 10.2-inch touch screen, uniform speed swing welding, wide, narrow welding path can be adjusted. The welding mechanism has four welding guns, which can work simultaneously or independently; the centralized control unit can flexibly adjust the welding parameters and realize intelligent welding.
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RX® has many years of experience and solutions for making machinery and equipment, machining accessories, and engineering projects.
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Rolls, grinding rolls are roughly divided into two categories of rolls and grinding rolls, rolls are mostly used in the production line of iron and steel, continuous casting, open billet, conveyor and so on various materials of the rolls. Grinding rolls are mostly used in steel, cement, electric power, mining, etc., pre-material crushing, crushing equipment, coal mills, vertical mills, roller presses, crushing, and so on various materials of the grinding roll. The life of these rolls directly determines the service life of the equipment and affects the cost of the finished product, RX® has many years of experience in the repair of rolls and mill rolls. RX® has many years of experience and solutions to help companies improve the service life of their rolls and reduce their production costs.
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The key issue for any cement plant lies in the availability of critical equipment. The key to equipment availability is wear resistance, and the performance of wear-resistant products determines the operating time of critical equipment.
Mine operators around the globe are seeking to increase productivity, profitability and sustainability. We help our partners achieve these goals by delivering the mining industry’s most comprehensive and cost-effective wear solutions.
In the steel industry, the use of equipment is even more brutal, involving raw minerals, high temperatures, corrosion and other working conditions.
Wear protection for fan blades, conveyor chutes and hopper liners, crushers, coal mills, dust removal systems, conveyor systems.
Ports are mainly to transport various materials, conveying equipment, loading and unloading equipment, as well as yard stacking and picking equipment, is the main force of port operations, and the damage of these equipment directly affects the benefits.
The wear-resistant alumina ceramic is made of high purity superfine alumina powder and sintered at high temperature by an optimized formula.
More to come as we continue to update and develop custom engineered systems for chemical processing plants and waste management sectors.
More to come as we continue to update the custom-machined steel-pipe overlay technologies and high-stress slurry lining designs.
Recently, www.runxing-machinery.com, a website dedicated to serving the wear-resistant industry, has officially entered its trial operation phase. The website, built by Tangshan Runxing Machinery Co., Ltd., serves as a platform for the wear-resistant industry (offering one-stop procurement and engineering)...
From September 2 to 6, 2024, the much-anticipated 2024 South Africa International Construction Machinery Exhibition, Mining Machinery Exhibition and Power and Energy Equipment Exhibition was grandly opened in Johannesburg International Convention and Exhibition Center. In the five-day exhibition...
In 2023, Yuan Shaoqiang, Dean of Tangshan University; Li Jing, Vice Dean, and Professor Yang Yuehui (Team Leader of Metal Materials and Forming Technology) visited our unit for research. Our unit’s General Manager Li Xiuhua, Vice General Manager Cui Jianying, and Office Director Zhang Yukun received the delegation...
Since its establishment, Tangshan Runxing Machinery Co., Ltd. has been using high-quality VAUTID brand welding materials for some wear-resistant products. For the first time since 2019, it has become a qualified agent for VAUTID, and has been continuously improving together in a mutually beneficial partnership...
From April 24th to April 27th, Tangshan Runxing Machinery Co., Ltd. (referred to as Runxing Machinery) participated in EXPOMIN 2023, the world's second largest professional mining exhibition for the first time, with exhibits covering products from all fields of mining, generating extensive international leads...
Our primary product lines consist of a mild or low-alloy steel base backing plate overlaid with a hypereutectic hardfacing alloy. The alloy deposit contains 25% to 35% chromium (Cr) and 4.0% to 5.5% carbon (C). The metallurgical microstructure displays primary M7C3 chromium carbides in an austenite-carbide eutectic matrix. This specific distribution achieves exceptional wear resistance while maintaining structural bendability.
These are called "stress-relief checking cracks." They develop naturally during cooling as the weld bead contractually shrinks over the base metal. They are a sign of proper overlay formulation and allow the composite plate to be rolled and fabricated into pipes, cones, or segments without delamination. The cracks do not extend into the structural backing steel.
Tangshan Runxing Machinery has been a licensed and qualified agent for VAUTID (Germany) since 2019. By employing VAUTID's proprietary, world-class consumables and applying their rigorous metallurgical standards directly inside our Chinese plant, we combine advanced German engineering with Hebei's manufacturing cost-efficiencies.
To provide professional logistics and legal clarity, all of Runxing's global trade and exports are handled by Hebei Yuwan International Trade Co., Ltd. They act as our exclusive export desk, processing all customs declaration, commercial documents, port dispatching, and secure international payment collections. This guarantees transparent, professional compliance for all global buyers.
Yes. The carbon steel backing layer can be welded easily using conventional E7018 electrodes or standard solid wires. The overlay surface can be cut using plasma arc, laser cutting, or high-pressure water jet. The plate can also be pre-drilled or fabricated with rear weld-studs for quick bolt-on liner replacement.
Standard Runxing Chromium Carbide plates are suitable for applications up to 350°C. For applications exceeding this range (up to 750°C), such as sinter plant chutes or hot power generation ducts, we produce specialty grades utilizing high-temperature elements (such as Tungsten, Niobium, and Molybdenum) that retain their high-HRC mechanical properties at temperature.
Runxing machinery
