Rotary Tiller Plow Knife/65mn Rotary Plow Knife/50CRV4 Rotary Plow Knife/Soil Chopper Soil Turner/Rotary Tiller Blade Customization

Product Description

Adaptation and Application:
Rotary harrow blades, tractor rotary plow blades
Dryland rotary plow blades, paddy field rotary plow blades, greenhouse-specific rotary plow blades
Cornfield rotary plow blades, paddy field rotary plow blades, vegetable field rotary plow blades
Deep plow rotary plow blades, shallow plow rotary plow blades.

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What materials are used for the rotary tiller blades?
The material of the rotary tiller directly affects its wear resistance, strength and service life. It needs to be selected based on the operating environment (such as soil hardness, presence of stones, etc.) and usage requirements. The common materials mainly include the following types:
1. Carbon structural steel (such as 45 steel)
Characteristics: Contains about 0.45% carbon, has medium strength and toughness, has a low cost, and good processing performance (easy to forge, heat treat).
Application: Suitable for operations in soft soil (such as vegetable fields, paddy fields), or for light-duty rotary tiller scenarios with low wear resistance requirements.
Shortcomings: Limited hardness and wear resistance. When operating in hard soil or land with sand and stones for a long time, it is prone to wear or chipping.
2. Alloy structural steel (such as 65Mn, 50CrV4)
65Mn steel:
Belongs to spring steel, with a manganese content of about 1.0%-1.3%, after heat treatment, the hardness can reach HRC50-55, with better elasticity and wear resistance than 45 steel.
Suitable for operations in medium-hard soil, can withstand certain impacts (such as encountering small stones), is commonly used for small rotary tillers.
50CrV4 steel:
Contains alloy elements such as chromium and vanadium, has good quenching and tempering properties, after heat treatment, the comprehensive mechanical properties are excellent (high strength, high toughness, high wear resistance), and has strong fatigue resistance.
Suitable for medium to hard soil or scenarios with high operation intensity (such as large rotary tillers, deep plowing operations), with a longer service life than 65Mn.
3. High-speed steel (such as W18Cr4V)
Characteristics: Contains alloy elements such as tungsten, chromium, and vanadium, excellent heat resistance and red hardness (remaining hardness at high temperatures), wear resistance far higher than ordinary alloy steel.
Application: Rarely used for complete rotary tillers (high cost), usually as coating or edge overlay materials to enhance the wear resistance of the blade edge, suitable for operations in soil with a large amount of sand and stones, or in harsh scenarios with high operation intensity (such as large rotary tillers, deep plowing operations), with a longer service life than 65Mn.
4. Wear-resistant cast iron (such as white cast iron, alloy cast iron)
Characteristics: High hardness (HRC50-60), strong wear resistance, but poor toughness, high brittleness, prone to fracture due to impact.
Application: Often made into small rotary tillers or edge inserts, used for scenarios with extremely high wear resistance but low impact (such as fine cultivation in greenhouses).
5. Composite materials (multi-layer composite materials)
Characteristics: Adopt a "high-strength base + wear-resistant edge" composite structure, for example: the blade body uses alloy structural steel with good toughness (ensuring impact resistance), the edge is welded or embedded with high-speed steel, tungsten carbide, etc. for wear resistance (improving wear resistance).
Advantages: Balances toughness and wear resistance, longer service life than single materials, suitable for complex soil environments (such as uneven hardness, containing impurities), but higher cost.
Core principle of material selection
Soft soil / light operation: Prefer 45 steel or 65Mn, high cost performance;
Hard soil / moderate operation: Select 50CrV4 and other alloy structural steel, balance strength and wear resistance;
Harsh environment (many sand stones, high impact): Select composite materials or edge-strengthened blades, reduce replacement frequency.

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