Cohesion: Our piston rods undergo thermic shock testing, where they are exposed to a temperature of 300 degrees Celsius and then cooled in water. They exhibit excellent cohesion, with no cracks, breaking, or detachment after this thermal treatment.
Hollow Piston Rod
Our piston rods are designed to provide high performance and reliability in various applications. Here are the specifications:
Material: We offer a wide range of material options including CK45, SAE1045, 4140, 4340, JIS45C, 40Cr, 20MnV6, 42CrMo, SS431, SS430, Stainless Steel 304/316/2205, and more. These materials are known for their strength and durability.
Diameter: The diameter of our piston rods ranges from Φ 6mm to 500mm, allowing for flexibility in different application requirements.
Length: The maximum length of our piston rods is 13m, ensuring compatibility with various hydraulic cylinder designs.
Chrome Layer Thickness: Our piston rods are chrome plated with a minimum thickness of 20 microns up to 100 microns. We can discuss special layer thicknesses based on specific needs.
Hardness of Chrome Layer: The chrome layer on our piston rods has a minimum hardness of 850 HV and can go up to 1150 HV, providing excellent wear resistance.
Surface Roughness: The piston rods have a surface roughness of Ra ≤ 0.2u, ensuring a smooth and reliable operation.
Straightness: Our piston rods have a maximum straightness tolerance of 0.2/1000, ensuring their alignment and functionality.
Diameter Tolerance: The piston rods conform to ISO standards with diameter tolerances of ISO f7/h8/g6, meeting industry standards for precision.
Roundness: The roundness of our piston rods is half of the tolerance specified in ISO f7, ensuring optimal performance.
Supply Condition: The piston rods are ground and chrome plated, providing a smooth and corrosion-resistant surface.
Detailed Description
CHEMICAL COMPOSITION
|
Material |
C% |
Mn% |
Si% |
S% |
P% |
V% |
Cr% |
|
Ck45 |
0.42-0.50 |
0.50-0.80 |
0.04 |
0.035 |
0.035 |
- |
- |
|
ST52 |
0.22 |
1.6 |
0.55 |
0.035 |
0.04 |
- |
- |
|
20MnV6 |
0.16-0.22 |
1.30-1.70 |
0.10-0.50 |
0.035 |
0.035 |
0.10-0.20 |
- |
|
42CrMo4 |
0.38-0.45 |
0.60-0.90 |
0.15-0.40 |
0.03 |
0.03 |
- |
0.90-1.20 |
|
40Cr |
0.37-0.45 |
0.50-0.80 |
0.17-0.37 |
- |
- |
- |
0.80-1.10 |
MECHANCIAL PROPERTIES
| Material |
T.S N/MM2 |
Y.S N/MM2 |
E%(MIN) |
CHARPY |
CONDITION |
|
CK45 |
610 |
355 |
15 |
>41J |
NORMALIZE |
|
CK45 |
800 |
630 |
20 |
>41J |
Q + T |
|
ST52 |
500 |
355 |
22 |
- |
NORMALIZE |
|
20MnV6 |
750 |
590 |
12 |
>40J |
NORMALIZE |
|
42CrMo4 |
980 |
850 |
14 |
>47J |
Q + T |
|
40Cr |
1000 |
800 |
10 |
- |
Q + T |
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