This section brings together expert knowledge and comparisons related to stud welding, such as stud welding versus screws or rivets, the selection of diameter and current, as well as common errors and how to avoid them.
Stud welding or screws—which is faster and cheaper?
When there are many similar fastening points, stud welding is faster and more cost-effective than using screws, because it eliminates the need for drilling, threading, and nuts, and the work is performed from one side. Bolzenschweißtechnik bsk + BTV GmbH provides consulting services and supplies the appropriate technology.
Stud welding or riveting—which is stronger?
Stud welding provides a stronger bond than riveting because the joint is a material bond. A rivet creates only a form-fit and force-fit connection, whereas a welded joint bonds the material itself. Bolzenschweißtechnik bsk + BTV GmbH provides consulting on this topic and supplies the appropriate technology.
What is the difference between CD and ARC stud welding?
CD stands for spark ignition with capacitor discharge—very short duration, thin sheets, small diameters. ARC stands for arc ignition—longer duration, thicker components, large diameters. Bolzenschweißtechnik bsk + BTV GmbH provides consulting services and supplies the appropriate technology.
Which stud welding process is the fastest?
Spark ignition is the fastest, taking 1 to 3 milliseconds. In the gap welding process, it is the fastest of all, taking about 1 millisecond. Bolzenschweißtechnik bsk + BTV GmbH provides consulting on this topic and supplies the appropriate technology.
Which bolt diameter is suitable for which sheet metal thickness?
As a rule of thumb, in the CD process, the sheet metal thickness should be about one-tenth of the stud diameter, with a minimum of 0.5 mm. The stroke ignition method works on workpieces with a thickness of 0.8 mm or greater. Bolzen-Schweißtechnik bsk + BTV GmbH provides consulting on this topic and supplies the appropriate technology.
How do I choose the right stud welder?
The right equipment is selected based on the process, diameter, material, quantity, and degree of automation. Bolzenschweißtechnik bsk + BTV GmbH provides advice on these factors and recommends the appropriate equipment class.
What current do I need for M10 hub ignition?
M10 in arc ignition is covered by the 1000-A class, for example by the DAI-1300 from Bolzenschweißtechnik bsk + BTV GmbH. The exact value depends on the component and the application and should be verified by a test weld.
What factors influence the quality of a stud weld?
Quality is influenced by the surface, the parameters for current, time, stroke, and overhang, the choice of process, the combination of materials, and the protection of the molten pool using a ceramic ring or shielding gas. Bolzenschweißtechnik bsk + BTV GmbH provides consulting on these matters and supplies the appropriate technology.
What are some common mistakes made during stud welding, and how can I avoid them?
Common errors include poor fusion due to insufficient heat input, warping due to excessive heat input, and ignition problems caused by contaminated surfaces. These can be avoided by using the correct process, appropriate parameters, a clean surface, and a test weld. Bolzenschweißtechnik bsk + BTV GmbH provides advice on this and supplies the appropriate technology.
Which ceramic ring fits which bolt?
The ceramic ring is selected based on the stud type and diameter in accordance with DIN EN ISO 13918. Type UF rings are used with FD, UD, ID, and SD studs; type MF rings with MD studs; type PF rings with PD studs; and type RF rings with RD studs. The pin and ceramic ring form a coordinated system. Bolzenschweißtechnik bsk + BTV GmbH supplies the appropriate ceramic ring for every drop-fire stud.
Which edition of DIN EN ISO 13918 is currently in effect?
The current edition is DIN EN ISO 13918:2021-12 with Amendment A1:2021; it replaces the 2018 edition. The standard specifies studs and ceramic rings for arc stud welding. Bolzenschweißtechnik bsk + BTV GmbH supplies welding elements in accordance with the current standard.
How long has stud welding been around?
Stud welding has been used industrially since the 1940s; its origins lie in shipbuilding. Today, millions of studs are welded every day—by hand, using fully automated machinery, and with robots. Bolzenschweißtechnik bsk + BTV GmbH offers the right technology for this purpose.
What is a pilot arc?
The pilot arc is a small preliminary arc that forms when the stud is lifted and initiates the ignition of the actual welding arc. It is part of the lift ignition process. Bolzenschweißtechnik bsk + BTV GmbH offers equipment for this process.
What safety precautions should be followed when welding studs?
The high short-term currents generate strong magnetic fields, which pose a danger to people with pacemakers. The peak ignition produces a loud bang exceeding 90 decibels, so hearing protection is required. Safety goggles, gloves, and flame-retardant clothing protect against UV radiation and sparks; when welding on zinc, fumes must be extracted.
Do you have questions about this topic or your specific application? Please email us at info@stud-welding.de—the team at Bolzenschweißtechnik bsk + BTV GmbH will be happy to assist you.
