Electric Chainsaw Manufacturers

How can electric chain saw manufacturers ensure the accuracy and surface quality of the chain links and links of electric chain saws during the steel processing and modeling stage?

1. Material selection and quality control
High-quality steel: Select high-quality and high-strength steel as the raw materials for chain links and links. These steels should have good mechanical properties and wear resistance to ensure that the chain saw can maintain stable performance during long-term use.
Material inspection: Strict quality inspection of purchased steel, including chemical composition analysis, mechanical property testing, etc., to ensure that the materials meet the design requirements.
2. Precision processing technology
High-precision processing equipment: Use high-precision processing equipment such as CNC machining centers to process chain links and links. These equipment can achieve high-precision size control and shape control to ensure the processing accuracy of chain links and links.
Processing process optimization: Develop a scientific and reasonable processing process route, including cutting parameters, tool selection, fixture design, etc., to reduce errors and deformations during processing.
3. Surface treatment technology
Surface treatment process: Use surface strengthening processes such as shot peening and heat treatment to improve the surface hardness and wear resistance of chain links and links. These processes can eliminate defects and stress concentration on the surface of the material, and improve the fatigue strength and service life of the chain saw.
Cleaning and rust prevention: Keep the chain rings and links clean during processing to avoid the influence of oil and impurities on the surface quality. After processing, anti-rust treatment is carried out to prevent the chain saw from rusting during storage and use.
IV. Quality control and inspection
Online detection: Set up an online detection device during the processing process to monitor and detect the size, shape, surface quality, etc. of the chain rings and links in real time to ensure that the processing quality meets the standards.
Finished product inspection: Conduct a comprehensive finished product inspection on the finished chain saw, including tests on appearance quality, accuracy, performance, etc. Only chainsaws that meet quality standards can be shipped.
V. Continuous improvement and technological innovation
Technological improvement: Keep paying attention to industry trends and technological development, introduce new technologies, new processes and new equipment, and improve the processing accuracy and surface quality of the chain saw.
Quality control system: Establish a sound quality control system, including quality control measures in various links such as raw material procurement, processing process control, and finished product inspection to ensure the overall quality of the chain saw.

What specific processes are used in electric chain saw factories during the heat treatment and quenching process of chain saw blade teeth?

1. Heat treatment process
Tempering treatment:
Purpose: To achieve appropriate strength and toughness of the chain saw blade as a whole.
Process: Use quenching and high-temperature tempering to increase the tempering temperature until the hardness of the steel reaches HRC35~38. At the same time, the overall tensile strength of the saw body is about 120Kg/mm², the elongation is more than 10%, and the impact toughness is The value is above 1J/cm².
Partial hardening of tooth edge:
Methods: Mainly include flame quenching, high frequency quenching, hard chromium plating, etc.
Effect: These methods can make the surface hardness of the saw blade tooth edge reach HRC60~65 (flame quenching and high frequency quenching) or HB700~1000 (hard chromium plating method), thereby significantly improving the hardness and wear resistance of the saw tooth edge.
2. Quenching process
heating:
Place the chain saw blade into a heat treatment furnace and heat it to the desired temperature. The specific temperature depends on the material and thickness of the blade teeth, but it usually needs to reach a temperature sufficient to soften the material for subsequent quenching.
Insulation:
After the heating reaches the predetermined temperature, it is maintained for a certain period of time to allow the temperature to be fully and evenly distributed to the entire part of the blade teeth to ensure temperature consistency during quenching.
Quenching:
Method: Commonly used quenching methods include water quenching, oil quenching, etc. Electric chain saw factories may use specific quenching equipment, such as using an AC low-voltage transformer for power supply, using carbon rods as electrodes to contact the saw teeth, which generates a strong current between the electrodes and the saw blades, causing the tips of the saw teeth to quickly heat to high temperatures (such as 800°C). ℃ or above), and then rapidly cooled (such as natural quenching in air or oil quenching).
Note: The temperature and time need to be strictly controlled during the quenching process to avoid problems such as overheating, cracking or deformation of the blade teeth. At the same time, the cooling rate after quenching is also very critical, which will affect the final hardness and toughness of the cutting teeth.
Tempering (if required):
After quenching, tempering is sometimes required to restore the flexibility of the blade teeth and eliminate internal stress. The choice of tempering temperature and time depends on the specific tooth material and desired performance requirements.