Piston rod is an important component for mechanical piston movement, sometimes this product is also known as Hard chrome plated shaft. How to select high-quality chrome plated piston rod is very important. We will introduce the selection criteria from the aspects of material, hardness, straightness, and thickness of chrome-plated layer.
Piston rods are usually manufactured from chrome plated rods. Due to the high frequency of piston movement, the quality requirements for this part are very high. After the piston rod is hard chrome-plated, its hardness and service life can be improved. Let me briefly introduce the basic requirements of the chrome-plated piston rod.
Basic requirements for chrome-plated piston rod:
1. Must have sufficient strength, stiffness and stability;
2. Good wear resistance, high machining accuracy and surface roughness requirements;
3. Structurally, minimize the influence of stress concentration;
4. Make sure the connection is firm and prevent loosening;
5. The design of the piston rod structure should facilitate the disassembly and assembly of the piston.
How to choose a high-quality chrome-plated piston rod?
1. Materials (Steel grade)
This material is the main raw material when manufacturing cylinders and cylinder piston rods, so we can choose high quality chrome plated rods according to the quality of the materials used. We produce high quality chrome rods in CK45/C45, SAE 4140 / 42CrMo, and so on. Depends on the materials used, there are below different types of chrome plated rods.
- CK45 Chrome plated Rod / CK45 chrome plated bar
- SAE 1045 chrome plated rod
- SAE 4140 chrome plated rod
2. Hardness
Hardness mainly refers to the ability of a material to resist the pressing of hard objects into its surface. However, the hardness is not as hard as possible, the hardness should be appropriate. Because only the proper hardness can guarantee the quality of the product. The hard chrome plated layer can provide excellent surface hardness of the chrome plated rods. In addition, we can improve the hardness of the chrome plated piston rods by suitable heat treatment. Normally there are three different types of chrome plate rods with different heat treatment process as below.
- Chrome plated rods without heat treatment
- Q&T (Quenching and tempering) chrome plated rods
- Induction hardened chrome plated rods
3. Straightness
High-quality chrome-plated piston rods also attach great importance to their straightness requirements, because straightness is an important indicator.
4. Thickness of chrome-plated layer
A good chrome rod will usually have a chrome finish of 0.22mm or more, as this thickness works well for a smooth shaft piston rod.
Chrome-plated piston rods are mainly used in hydraulic pneumatics, construction machinery, automobile manufacturing piston rods, guide columns for plastic machinery, packaging machinery, printing machinery cylinders, textile machinery, conveying machinery shafts, linear optical shafts, etc.
We specialize in producing various specifications and models of chrome-plated rods, piston rods, hollow piston rods, chrome-plated piston rods, hydraulic cylinder rods, precision piston rods, oil cylinder piston rods, smooth shafts, linear shafts, etc.
Our products have good surface finish, uniform hardness, stable delivery, direct supply from the factory, a large number of spot, wholesale prices, and fast delivery. Welcome to contact us for consultation.
We are manufacturer of honed tubes and chrome plated bars, besides chrome plated piston rods, we also produce below proeducts.
