Technical differences and causes of heat aging test chamber

The following is a list of technical differences and reasons for the thermal aging test chamber GB/T7141 and ASTM D5510:1994 (2001):

1. GB/T7141 has deleted the following three standards: ASTM D1870 tubular heat aging test box high temperature aging specification, ASTM D2436 electrical insulation forced convection test box regulation, ASTM E145 gravity convection and forced ventilation heat aging test box regulations, increase GB/T 11026.4-1999 - Guidelines for determining the heat resistance of electrical insulating materials - Part 4: aging oven single chamber ovens. Reason: The three ASTM standards mentioned above do not have corresponding national and international standards, and the relevant standards in the national standards are GB/T 11026.4-1999.

2, aging heat aging test chamber GB/T7141 standard GB/T 11026.4-1999; added "without forced air circulation"; delete "When it is necessary to eliminate the pollutants in the sample and materials, the tube specified in D1870 The furnace may be more suitable. The heat aging test chamber unit shall be identical to Model 1A and Model IIB of Specifications D2436 and E145; “Increase “with forced air circulation”. Reason: Consistent with China's national conditions, clear the type of aging heat aging test chamber, no relevant standards and equipment in China, and clarify the type of aging heat aging test chamber.

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