Testing items and methods for reliability, high and low temperature resistance of plastic gears

Testing items and methods for reliability, high and low temperature resistance of plastic gears

In industrial production and manufacturing, plastic gears, as an important transmission component, are widely used in various mechanical equipment. However, gears are subject to various external environments during long-term operation, with temperature being an important factor. To ensure the reliability and stability of plastic gears, it is essential to conduct high and low temperature performance testing.

Testing standards

The reliability, high and low temperature resistance performance testing of plastic gears can refer to the following standards:

GB/T 3692-2000 "Plastic Gears"

GB/T 8803-2005 "Test Method for Thermal Stability and Cold Resistance of Plastic Materials for Gears"

ASTM D4093-01 'Standard Test Method for Photoelastic Measurements of Birefringence and Residual Strains in Transparent or Translucent Plastic Materials'

These standards cover the physical properties, thermal stability, Photoelasticity and other indicators of gears, and comprehensively and accurately evaluate the high and low temperature performance of plastic gears.

Testing requirements

The requirements for testing the reliability, high and low temperature resistance of plastic gears mainly include the following aspects:

Temperature range: It is usually necessary to test within the temperature range of -40 ℃ to 180 ℃ to simulate temperature changes under actual usage conditions.

Sample preparation: Prepare the plastic gear into a sample according to the corresponding standards, ensuring that the shape and size meet the requirements.

Testing equipment: High and low temperature boxes and corresponding temperature measuring instruments need to be used for testing to ensure the accuracy and repeatability of the testing process.

Test parameters: According to standard requirements, determine the parameters for testing, such as heating rate, insulation time, etc.

Test result analysis: Based on the test data, conduct result analysis to evaluate the high and low temperature resistance performance of plastic gears.

Testing process

The process for testing the reliability, high and low temperature resistance of plastic gears is as follows:

Sample preparation: According to the standard requirements, prepare the plastic gear into a sample.

Preparation of testing equipment: Place the sample in a high and low temperature box and connect the corresponding temperature measuring instruments.

Test parameter settings: According to standard requirements, set the parameters for testing, such as temperature range, heating rate, etc.

Test start: Start the high and low temperature box and start the temperature change test.

Data recording: During the testing process, record relevant temperature and time data.

Test completion: After the test is completed, close the high and low temperature boxes and take out the samples.

Result analysis: Based on test data, conduct result analysis to evaluate the reliability and high and low temperature resistance of plastic gears.