In the agricultural machinery industry, the durability and stability of components directly affect equipment performance. Push rods, which serve as critical connecting elements in rice transplanters, tractors, and other machinery, demand materials with excellent wear resistance, strength, and precision. Among various steel grades, the 40Cr ground bar has emerged as one of the most reliable choices for push rod production.
Key Properties of 40Cr Ground Bar
40Cr is a medium carbon alloy structural steel, strengthened by chromium. It is widely used for mechanical parts that require higher strength and toughness than regular carbon steels. When processed into ground bars, its mechanical properties and surface finish are further optimized for agricultural applications.
| Property/Feature | 40Cr Ground Bar Performance |
|---|---|
| Hardness (after tempering) | HRC 22–28, uniform and stable |
| Wear Resistance | Excellent, suitable for frequently moving parts |
| Straightness | High precision, ensures push rod alignment |
| Deformation Resistance | Strong, prevents bending during long-term use |
| Corrosion Resistance | Good rust resistance after grinding and plating |
| Surface Quality | Smooth, supports reliable electroplating coating |
Why 40Cr for Push Rods?
- Superior Wear Resistance
Push rods in agricultural machinery endure constant friction. The tempered hardness range of HRC22–28 provides an ideal balance of toughness and wear resistance. -
Precision and Straightness
The grinding process ensures excellent straightness, reducing the risk of misalignment in machinery operation. -
Impact Resistance and Toughness
Agricultural machinery often works in harsh environments. 40Cr offers high resistance to shock and fatigue, ensuring long-term reliability. -
Surface Advantage
With its smooth surface and low roughness, 40Cr ground bar allows better electroplating adhesion, extending service life. -
Corrosion Protection
Although not fully stainless, 40Cr can resist rust after grinding and proper surface treatment, making it suitable for outdoor agricultural conditions.
Application in Agricultural Machinery
40Cr ground bars are commonly used as push rod materials in rice transplanters (e.g., Yanmar models), tractor linkage systems, and other agricultural tools where precision and durability are essential. Compared to lower-grade steels, 40Cr ensures fewer breakdowns and longer replacement cycles, reducing maintenance costs for farmers.
The 40Cr ground bar stands out as the preferred raw material for agricultural machinery push rods due to its combination of wear resistance, toughness, and excellent machinability. Its consistent performance in demanding agricultural environments ensures efficiency and reliability. For high-quality 40Cr steel bars, Tongyi Metal provides reliable supply with strict quality standards tailored to agricultural industry needs.
