Hydraulic Cylinder Rod
The piston rod of the hydraulic cylinder is made of 45# steel, which is treated with tempering and tempering. The surface is plated with chromium 0.03 ~ 0.05mm thick after turning and grinding.
The piston rod is a connection component that supports the piston to do work.
Hydraulic Cylinder Rod Description
The piston rod of the hydraulic cylinder is made of 45# steel, which is treated with tempering and tempering. The surface is plated with chromium 0.03 ~ 0.05mm thick after turning and grinding.
The piston rod is a connection component that supports the piston to do work. It is mostly used in the oil cylinder and cylinder motion execution parts. It is a moving part with frequent movement and high technical requirements. Take hydraulic cylinder as an example, it is composed of cylinder, piston rod (cylinder rod), piston and end cap.
The machining quality of piston rod directly affects the life and reliability of the whole product. Piston rod processing requirements are high, its surface roughness requirements are Ra0.4 ~ 0.8um, strict requirements on coaxiality, wear resistance.
Hydraulic Cylinder Rod processing method
The piston rod is rolled to improve the surface corrosion resistance, and can delay the generation or expansion of fatigue cracks, so as to improve the fatigue strength of cylinder rod.
By rolling forming, a cold working hardening layer is formed on the rolling surface, which reduces the elastic and plastic deformation of the contact surface of the grinding pair, thus improving the wear resistance of the cylinder rod surface and avoiding the burn caused by grinding.
After rolling, the reduction of surface roughness can improve the fit property. At the same time, the friction damage to the sealing ring or seals is reduced when the cylinder rod piston is moving, and the whole service life of the cylinder is improved. Rolling process is an efficient and high quality process measure.
Hydraulic Cylinder Rod Chemical Composition
| Speci -cation | Grade | Chemical Composition [%] | ||||||||||||||
| C | Mn | P | S | Si | Cr | Mo | Cu | Ni | V | |||||||
| Min | Max. | Min | Max. | Max. | Max. | Min. | Max | Min. | Max | Min. | Max | Max | Max | Max | ||
| ASTM A-53 | A | - | 0.25 | - | 0.95 | 0.05 | 0.045 | - | - | - | 0.4 | - | 0.15 | 0.40 for S | 0.4 | 0.08 |
| B | - | 0.3 | - | 1.2 | 0.05 | 0.045 | - | - | - | 0.4 | - | 0.15 | 0.40 for S | 0.4 | 0.08 | |
| ASTM A-106 | A | - | 0.25 | 0.27 | 0.93 | 0.035 | 0.035 | 0.1 | - | - | 0.4 | - | 0.15 | 0.4 | 0.4 | 0.08 |
| B | - | 0.3 | 0.29 | 1.06 | 0.035 | 0.035 | 0.1 | - | - | 0.4 | - | 0.15 | 0.4 | - | 0.08 | |
| c | - | 0.35 | 0.29 | 1.06 | 0.035 | 0.035 | 0.1 | - | - | 0.4 | - | 0.15 | 0.4 | 0.08 | ||
| ASTM A333 & A334 | 1 | - | 0.3 | 0.4 | 1.06 | 0.025 | 0.025 | - | - | - | - | - | - | - | - | - |
| 6 | - | 0.3 | 0.29 | 1.06 | 0.025 | 0.025 | 0.1 | - | - | - | - | - | - | - | - | |
Hydraulic Cylinder Rod Mechanical Property
| Speci -cation | Grade | Mechanical Properties | |||||
| Yield Strength | Tensile Strength | % Elongation (G.L. 50 mm WT 8 mm) e (min.) | |||||
| Min. | Min. | ||||||
| PSI | MPa | PSI | MPa | ||||
| ASTM A-53 | A | 30,000 | 205 | 48,000 | 330 | e=625000 A02/U09 | |
| B | 35,000 | 240 | 60,000 | 415 | |||
| ASTM A-106 | A | 30,000 | 205 | 48,000 | 330 | 35L / 25T | |
| B | 35,000 | 240 | 60,000 | 415 | 30L / 16.5T | ||
| c | 40,000 | 275 | 70,000 | 485 | 30L / 16.5T | ||
| ASTM A333 & A334 | 1 | 30,000 | 205 | 55,000 | 380 | 35 | |
| 6 | 35,000 | 240 | 60,000 | 415 | 30 | ||
Hydraulic Cylinder Rod Specification
Product name: | hydraulic cylinder piston rod |
Size: | Ø 6-300mm |
Length: | 3m -8m |
Material: | 45# DIN CK45/JIS 45C/ST52/20MnV6/42CrMo4/40Cr |
Tolerance | ISO f7 |
Chrome thickness: | 20~30micron |
The hardness of the chrome layer: | 850HV(min) |
Roughness: | Ra 0.2micron (max) |
Straightness: | 0.2/1000mm |
Yield Strength | ≥320 Mpa |
Tensile Strength | ≥580 Mpa |
Elongation | ≥ 15% |
Supply condition: | 1.Hard chrome plated |
2.Induction hardened | |
3.Quenched & Tempered | |
4. Induction hardened with Q&T |
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Our steel products are mainly used in chemical industry, petrochemical industry, offshore, seawater pipeline, desalination plant, nuclear engineering, paper and pulp industry.
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