Topic
Spot welding
About: Spot welding is a research topic. Over the lifetime, 12491 publications have been published within this topic receiving 89845 citations. The topic is also known as: Spot_welding.
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Patent•
18 Dec 1997
TL;DR: In this article, a welding station for motor-vehicle bodies or subassemblies thereof is described, in which the body side panels are engaged during welding by locking devices arranged in the space between the body's sides and carried by two locating gates.
Abstract: There is described a welding station for motor-vehicle bodies or
subassemblies thereof in which the body side panels are engaged during
welding by locking devices (12) arranged in the space between the body
sides and carried by two locating gates (5; 6) which are rigidly connected
to each other by means of quick coupling means (14).
33 citations
TL;DR: In this article, the degree of sensitization in resistance spot welding (RSW) joints is considered as the combined effect of intergranular corrosion (IGC) and transgranular contamination in the heat affected zone (HAZ) and of interdendritic corrosion (IDC) in the weld nugget (WN).
33 citations
TL;DR: It is indicated that traditional ultrasonic signal analysis in either time domain or frequency domain remains inadequate to evaluate the nugget diameter of spot welds, but the method based on wavelet package analysis in time-frequency domain can easily distinguish the nuggets from the corona bond by extracting high-frequency signals.
33 citations
Patent•
18 Oct 2000TL;DR: In this article, a modified method for friction stir welding was proposed where the shoulder is independently movable of the pin and the shoulder can be used to exert controlled and variable forces on the assembled joined-to-be members so that the down force under retraction of a pin exceeds the plasticity limit of excess material collected under the shoulder.
Abstract: Modified method for friction stir welding process where the shoulder (2) being independently movable of the pin (1) exercises controlled and variable forces on the assembled joined-to-be members so that the down force under retraction of the pin exceeds the plasticity limit of excess material collected under the shoulder.
33 citations
TL;DR: In this paper, the partitioning behavior of carbon, phosphorous and boron during the solidification of a resistance spot weld pool was studied using experimental simulations and a phase field model.
Abstract: The partitioning behaviour of carbon, phosphorous and boron during the solidification of a resistance spot weld pool was studied using experimental simulations and a phase field model. Steels with varying carbon, phosphorous and boron contents were designed and subjected to a range of resistant spot welding thermal cycles. Mechanical properties were evaluated by hardness and cross tension tests and correlated with the weld microstructure. Phase field modelling results and experimental predictions show that the phosphorus concentration in the last area in the weld pool to solidify can reach about 0.38 wt% for a steel with a bulk concentration of 0.08 wt%. Elemental analysis indicates that in the absence of boron, the grain boundaries of columnar grains in the weld pool are decorated with phosphorous. As a result, a complete interface failure occurs during cross tension testing. With the addition of boron, apart from an increase in weld strength and plug diameter, the failure mode switches to a complete plug mode, resulting from the phosphorous depletion at the grain/inter-phase boundaries.
33 citations