A study of radiation heating during the curing process of head gimbal assembly

Thermal radiation characteristics of materials associated with their interactions in the electromagnetic (EM) curing process of head gimbal assembly (HGA) are studied to identify process factors involving a random soft electrostatic discharge (ESD) of a read sensor that is located on a slider. The oven temperature measurement with K-type grounded thermocouples that are also used regularly as real-time and non-contact slider temperature measuring tools, show relatively higher temperature in the center of the carrier than its both ends. It is then shown from the two-dimensional (2D) model that the center slider temperatures are apparently different when different types of thermocouples are used. The center slider´s peak temperature increases steadily with a decrease in the suspension´s thickness and width, and, in some cases, is higher than ones measured by the thermocouple.