Wuxi YUTONG

  SAE4140   Q+T Induction Hardened Chrome Rod  usually manufactured from cold rolled or hot rolled carbon steel 4140 round bars, The surface of the electroplated coating of the chrome-plated rod after treatment has no blackening, peeling, no wrinkling, no pinholes, and the surface of the coating is smooth.Induction Hardened produced by using advanced processing techniques usually on steel rods, for surface removal, polishing, induction hardening, followed by hard chrome plating. 4140 hard chrome plated bar is used extensively by the hydraulic and pneumatic industries, and is employed by other industry sectors for a wide range of applications requiring higher strength. Description Of 4140 Q+T Induction Hardened Chrome Rod Material : SAE4140 AISI4140 SCM440,42Crmo4 4140 Type:  Induction Hardened Chrome Rod/Chrome Plated Bar/Chrome Plated Rod/Nickel-Chrome Plated Rod/ Hollow Chrome Bar /Hollow Chrome Rod Heat Treatment Type:  1) Induction Hardened  2)Q+T(...

  SAE 4340 chrome plated rod is a type of round steel rod used in many different industries, such as automotive, construction, aerospace, and especially telescopic custom hydraulic cylinder applications. It has a high tensile strength, so it will not deform when put under pressure. This steel also has a low carbon content, making it solid and durable but lightweight. 4340 steel is one of the most common grades of steel used for machine and manufacturing cylinders applications due to the excellent strength/weight ratio makes it a popular choice for many machinery, vehicles, and structures. The 4340 steel is a type of steel with high strength and toughness. The 4340 round bar Steel is also called “chrome molybdenum” because it has a higher content of chromium and molybdenum than other types of steel. The SAE4340 cylinder round bar after hard chromed has a yield strength of about 100,000 psi, whereas the yield strength for other types of steel ranges from about 60,000 to 80,000 psi....

  SCM430 hollow rod or   4130 hollow rod   is made of   cold drawn seamless tubes   or hollowed bars, by grinding and precision polishing on the outside diameter and then chrome plated to a certain thickness on the OD. Chrome hollow bar and chrome solid bar both very popular components for producing   hydraulic cylinder . Heat Treatment Of 4130 Hollow Rod 1.Q+T(Quenched+Tempered) Quenching and tempering refers to the hardening (Quenching) of 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. On account of the associated microstructure transformation during the cooling process, the chrome hollow steel 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)...

  For 4140 cylinder rods , leading hydraulic cylinder manufacturer Wuxi YUTONG recommends chrome hardness of at least 900 HV/10. However, there are other factors that go into the hard chrome plating process to ensure it is suitable for the proper operation and performance of your hydraulic cylinder. Shiny surface layer of your hydraulic cylinder rod is all that stands between you and failure. This very hard, perfectly finished surface must conform to very precise specifications to preserve the integrity of the hydraulic seal and give it a frictionless surface upon which it can run smoothly.The two most common types of chrome shafting used to make hydraulic cylinder rods are CPO and IHCP. CPO stands for Chrome Plated Only, and IHCP stands for Induction Hardened & Chrome Plated . CPO shafting is typically 1045 steel with a Rockwell hardness of Rc15/19. IHCP is also 1045 steel, but achieves a surface hardness of Rc58/60 through the induction hardening process. It should b...

  1045 IHCP Chrome polished bar   are produced from commercial-grade cold-finished or 1045 hot rolled steel bars. After grinding the steel bars are polished and then hard-chrome plated (usually up to .001″ thick). The bar may be   induction hardened   to core depth of .050″ minimum and have a surface hardness of HRC50 minimum. These specialized   chrome plated bars   are typically used for shafting in the manufacture of   hydraulic cylinders. Typical Uses Of 1045 IHCP Chrome Polished Bar Corrosion-resistant 1045 hard chrome plated steel bar is used extensively by the hydraulic and pneumatic industries and is employed by other industry sectors for a wide range of applications. Other typical uses include:   Standard Cylinders  Dump Trucks  Fork Lifts  Presses  Skidsteers  Tractors  Steering-Gear Systems  Combines  Planters/Balers  Hydraulic Platforms  Aerial Lifts  Material Handling Equipment Wu...

  Hard chrome plating is an electroplating process in which chromium is deposited from a chromic acid solution. Thickness of hard chrome plating ranges from 2 to 250µm. Various types of hard chrome include micro-cracked chromium, micro-porous chromium, porous chromium and crack free chromium. It is essential that the micro-cracked and porous coatings have a minimum thickness between 80-120µm in order to confer adequate corrosion resistance. Micro-cracked chromium has a Vickers hardness of 800-1000 kg/mm 2 , while crack-free chromium has Vickers hardness between 425-700 kg/mm 2 . The formation of micro-porous chromium is achieved by a specialised plating method involving the use of inert suspended particles. Porous chrome plating is developed by etching electrodeposited chromium. These are designed to retain lubricant, for sliding and bearing type applications. Chrome plating is used for wear and corrosion resistance in addition to its tribological (low friction) characteristics. H...

Hard chrome plating  is likely the least understood of these three chroming processes. Hard chrome plating involves heavy coatings of chromium in order to provide wear resistance, oil retention and lubricity. It is not decorative and is instead used to add durability to such things as piston rings,  hydraulic cylinder rods , thread guides and molds. It derives its name from its measurable thickness and is normally applied to steel substrates. While it is metallic and shiny, it is not a decorative finish. Hard chrome plating is a good option for wheels or bumpers. Nickel chrome plating also called decorative chrome plating, nickel-chrome plating involves electroplating a thin layer of nickel onto the item before the chrome layer is plated onto it. The layer of nickel adds smoothness, reflectivity and corrosion resistance. The chrome layer that is applied on top of it is very thin, measuring in the millionths of an inch. The appearance of decorative chrome primarily comes from t...

  Stainless steel cylinder rods  are precision machined from 303/304 stainless steel to provide excellent performance even in harsh environments. Common applications include food processing, chemical, medical, pharmaceutical and other corrosive environments. Piston rods are  hard chrome plated , ground and polished stainless steel. 316 stainless steel is available as an option. Stainless steel multi-stage and triple rod cylinders are available. Stainless steel piston rod  has high corrosion resistance, strength and wear resistance to keep high-efficiency operation. It can be applied to the circumstances subject to oxidization. Specifications of Stainless Steel Cylinder Rod a. Material: 304 stainless steel, 316 stainless steel b. Outside diameter tolerance: f7 - f8 (other tolerances can be custom-made) c. Surface roughness: Ra0.2-0.4 d. Hard chromium thickness: 0.015 - 0.025 mm e. Surface hardness: HV700-1150 f. Straightness: 0.05 - 0.10 m/m g. Standard length: 1...