High-frequency induction quenching equipment performs quenching heat treatment on rotary blades

The rotary blade is partially heat treated, but has certain hardness and strength requirements for the handle. The reason why the blade and handle have different hardnesses is that considering that the farmland soil is solid and there may be rocks, etc., the impact force during farming may be higher than that of sandy soil. If the hardness of the handle is lower than that of the blade, the impact will be slowed down, even if it occurs. A small amount of deformation, but no sudden breakage of the handle, has proven to work well.

High frequency quenching process of rotary blade:

According to the working characteristics and failure modes of rotary tillers, as agricultural tools, their workpiece conditions are poor and they are thin parts. Using high-frequency induction heating equipment for quenching heat treatment is an effective way to improve the hardness and wear resistance of cutting tools.

Examples of high-frequency quenching of rotary blades:

1. Select a high-frequency induction heating equipment with a power of 80 or 120KVA and a frequency of 15-35KHZ.

2. Make a profiling sensor according to the shape of the workpiece.

3. The quenching liquid is oil cold immersion quenching.

Workpiece conditions and technical requirements for rotary blades:

The rotary tiller blade is the main component of the rotary tiller. When it moves forward with the tractor, the horizontal cutter shaft rotates on one side. Multiple rotary tiller blades installed on the cutter shaft continuously plow the farmland and break up soil clods and grass roots while rolling forward. , widely used in agriculture. However, during the working process, the cutting edge is worn by sand and gravel in the soil, and the handle and blade are bent or broken by the impact of stones in the soil. Therefore, the failure mode is wear, bending, and breaking. Therefore, the rotary tiller blade is required to have high hardness and wear resistance, as well as a certain strength and toughness. The hardness after heat treatment is 48-64HCR, and the tool holder is 38-45HRC.