objective(s) to determine the potential toxic effects of manual soldering flux cored solder wire on lung of the rat as an experimental model. materials and methods a total number of 48 adult male rats were divided into experimental (n= 30) and control (n= 18) groups. based on exposure time to solder fume, each group was further subdivided into 2, 4 and 6 week subgroups. rats of experimental gro...

Resistance spot welding is used in the assembly of automobile bodies. The use high tensile strength steel plates bodies expanding, and there a need to develop process that improves joint per resistance weld point. To improve weld, can be combined with other joining methods, such as WeldBond method. As an additional method around nugget, than using adhesives method, brazing obtain strong without...

BACKGROUND AND AIMS In order to fabricate prostheses with high accuracy and durability, soldering techniques have been introduced to clinical dentistry. However, these prostheses always fail at their solder joints. The purpose of this study was to evaluate the effect of gap distance on the tensile strength of base metal solder joints. MATERIALS AND METHODS Based on ADA/ISO 9693 specifications...

The interface characteristics and microstructure formation of TA2-5083 composite plate after explosive welded were studied. Optical microscope electron used to analyze the intermetallic compounds. Furthermore, ANSYS/AUTODYN was adopted calculate simulated by smooth-particle hydrodynamics (SPH) method. results show that most molten metal in wave front stays wave-waist region. There a relative ve...

Surface mount technology (SMT) is one of the most important developments in electronic industry. A surface mount assembly (SMA) has three consecutive manufacturing steps: solder paste stencil printing, component placement, and solder reflow. Stencil printing process (SPP) involves highly operation complexity and has multiple quality characteristics, and averagely accounts for 60% of soldering d...

OBJECTIVES The purpose of this study was to evaluate in situ the occurrence of corrosion in the soldering point areas between the wire, silver brazing and band in Haas expanders. MATERIAL AND METHODS Thirty-four 7-12-year-old patients who needed maxillary expansion with a Haas expander were randomly assigned to two groups of 17 individuals each, according to the oral hygiene protocol adopted ...