Parametric Analysis of Hot Gas Welding for PP+EPR Blend and Evaluation of Welds in Tensile Conditions

Ingle, Sumedh S.; Deshmukh, M. J.

doi:10.38124/ijisrt20jun445

Cited by 1 publication

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“…Furthermore, inserting expression (12) into expression (15), gives the expression for calculating the generator power P via the anode current of the generator, i.e., the current of the upper electrode:…”

Section: -Spurious Resistance Of the Capacitor [ω] ω -Angular Frequen...mentioning

confidence: 99%

“…Later, Wu et al [14] extended the research on the behaviour of the dependence of the materials on the electrical permittivity and the loss angle with respect to the frequency. Ingle and Deshmukh [15] published table of thermoplastic materials, giving the abbreviations of the names, the welding temperatures, and the specific density of the materials. Hollande et al [16] performed tests on the behaviour of dielectric properties when welding thermoplastic polyurethane at a frequency of 27.12 MHz.…”

Section: Introductionmentioning

confidence: 99%

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Process Parameters of High Frequency Welding

Rogale,

Firšt Rogale,

Knezić

et al. 2023

Preprint

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So far, scientific studies on high frequency welding (HF) have observed the three main parameters: anode current, welding time and pressure of upper electrode. Some authors have also observed and studied the welding frequency, the power, and the values of the dielectric constants of the materials or the angle of dielectric losses. Due to the complex effects that the parameters have on the quality of the welded joint, it is necessary to extend the research and study the mutual relationships between a large numbers of process parameters on the welded joint in order to achieve satisfactory strength of the welded joint. In this research, the number of considered parameters is increased to 17, each of which is relevant to the processes of HF welding, and their mathematical equations are presented. The research is carried out on a HF welding machine improved with a linear pneumatic actuator for lowering the upper electrode and regulating the compressive force, and a measuring machine with the appropriate measuring method for determining the breaking forces with a tension gage and performing the „T“ test is made. Numerous researches were carried out on the functional changes of the process parameters of the percentage share of the values of the coupling capacitor, the anode current and the welding time on the values of the breaking forces of the welded joints. Based on the conducted research, it was concluded that the optimization of the process parameters of HF machine must be performed before the welding process, which is determined by a certain amount of energy that must be introduced into the material. These parameters are the capacity of the output capacitor, i.e., the value of the electric current flowing through the material and the time for the development of the operating power to produce welded joints with a certain strength and quality of welded joints for a specific material used in the process.

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Section: -Spurious Resistance Of the Capacitor [ω] ω -Angular Frequen...mentioning

confidence: 99%