Datong Hydraulic

 As we all know , When the specific pressure in service is very high or there is a risk to damage the chromium plated surface by shocks or abrasions, it is advisable to use the induction hardened AISI 4140 chrome bars . In this case the chromium overlay receives a better support by the hardened base material and is, therefore, less delicate. Why Induction Hardening? Our controlled induction hardening process ensures: Targeted Hardening: Only the working surface is hardened (HRC 58-62), preserving core ductility. Uniform Case Depth: Precise electromagnetic induction achieves consistent case depth (0.8–1.2 mm), mitigating distortion risks. Thermal Efficiency: Faster than traditional furnaces, with minimal decarburization. The Technical of AISI 4140 Chrome bars Material Composition & Performance. 4140 Alloy Steel: A chromium-molybdenum steel (0.75–1.00% Cr, 0.15–0.30% Mo) offering exceptional tensile strength (≥980 MPa) and torsional rigidity. Chrome Plating: A 50-100 µm thick chr...

  The   precision chrome plated rod   ,usually made of high strength hot rolled round steel bars(CK45, ST52, SAE4140) ,which chrome plated with a surface finish of Ra ≤0.2μm.The chrome plated bars are specially designed for high-load scenarios such as hydraulic cylinders, piston rods, and automation equipment. The chrome plated shafts provide a 5-year anti-rust warranty and are suitable for extreme temperature environments (-50°C to +200°C). Technical Parameters Of Precision Chrome Plated Rod Standard DIN/ASTM/GOST Material CK45, SAE1045, 4140, 4340, 4130,JIS45C, F-1140 Diameter 10mm – 600mm (support non-standard customization) Chrome thickness min 20/25/30/50 Micron or customized Surface hardness HRC 60-65 Straightness <= 0.5/1000 Tolerance ISO F7 Roughness Ra≤ 0.4micron Working temperature -50°C ~ +200°C length 1m-9m (can be cut and customized) Type:  Chrome Plated Bar/Chrome Plated Rod/Nickel-Chrome Plated Rod/ Hollow Chrome Bar /Hollow Bar Heat Treat...

  Induction hardened chrome rods are precision-crafted chromium alloys treated with a magnetic induction process. This technology heats the metal surface to extreme temperatures (up to 1,500°C) and rapidly cools it using a quenching medium. The result? A hardened outer layer (5-8mm thick) with exceptional wear resistance, while the core remains ductile for shock absorption. Key Benefits for Manufacturing Induction Hardened Chrome Rods: ✅ Longer Lifespan: Reduce replacement frequency and labor costs. ✅ Superior Strength: Handle heavy loads and repetitive stress without bending or breaking the raw manterials ✅ Corrosion Resistance: Ideal for automotive, aerospace, and marine industries like hydraulic cylinder applications exposed to harsh environments. ✅ Cost Efficiency: Save up to 40% on maintenance over traditional rods. The Induction Hardened Chrome Rods Over Other Solutions? Feature Induction Hardened Chrome Rods Traditional Chrome Plating Durability 3x longer lifespan Pro...

 As we all know, the suitable chrome rod is critical for the hydraulic system performance, durability, and cost efficiency, no matter from heavy machinery to aerospace components.  DATONG GROUP specialize in precision-engineered chrome piston rods tailored to your specific needs. In this guide, we’ll explore how material selection and advanced manufacturing techniques can optimize your hydraulic cylinder’s functionality. Hydraulic systems operate under extreme pressures, temperatures, and environmental conditions. A generic piston rod may fail prematurely due to: Inadequate load-bearing capacity (e.g., in construction equipment). Corrosion resistance (e.g., in marine or chemical plants). Weight constraints (e.g., in robotics or aviation). By corporating with us, you’ll gain a tailored solution that balances strength, flexibility, and longevity—directly addressing your industry’s challenges. 1. Material Selection: The Foundation of Performance The choice of material determines...

 AISI4130 hollow bar is made of  cold drawn steel tubes of aisi 4130 material or round steel bars, by grinding and precision polishing on the outside diameter of th 4130 round bar and then hard chromed to a certain thickness on the OD. 4130 Chrome hollow bar and 4130 solid  hard chrome bar both very popular components for producing hydraulic cylinder parts especially cylinder shafts. Heat Treatment Of 4130 Hollow Rod 1.Quenched+Tempered(+QT) Quenching and tempering refers to the hardening (Quenching) of 4130 hollow rod materials at temperatures from 800 — 1,100 °C with a subsequent re-heating (Tempering) at temperatures from 540 — 680 °C. Hardening is a heat treatment process that comprises of austenitizing and rapid cooling. the 4130 chrome hollow rod is hard but also brittle. The subsequent high tempering temperature leads to an increased yield and tensile strength as well as to high elongation and toughness values. 2. Normallized (+N) Normal annealing refers to ...