How is stud welding similar to arc welding?
How is stud welding similar to arc welding?
When the surfaces to be joined are properly heated, they are brought together under low pressure, resulting in the joining of the two at the interface. Capacitor discharge stud welding is performed with heat derived from the rapid discharge of electrical energy stored in a bank of capacitors. The rest of the process is similar to arc stud welding.
What kind of steel is used in stud welding?
Details of the process have been reported in the literature32 and Fig. 7.14 shows a metallurgical cross-section of a typical weld in 9CrMo910 creep-resistant steel, 40 mm thick.
How is the tightening torque related to the clamping force?
Consequently the value of the clamping force is usually referred to as the tightening torque. As the clamping force is a linear function of both the turning angle of the screw and the pitch of the thread, there is a direct relation between the clamping force and the tightening torque within the elastic range of the screw elongation.
Is there a way to measure the tightening torque?
The problem is that there is no practical way to measure the clamping force in normal production situations. Consequently the value of the clamping force is usually referred to as the tightening torque.
Can a GTAW be used to weld thin material?
Today, however, GTAW isn’t the only option, even for thin, heat-sensitive material. Gas metal arc welding (GMAW) process developments have perfected the technology so it can weld extremely thin material (see Figure 1 ).
When to apply torque to a weld nut?
The table below indicates the safe tightening torque, which may be applied to a Studfast weld stud when welded to a compatible good weldable quality material. It should be noted that should either the stud or the nut be lubricated the figures shown in the table should be reduced by 30%.
What do you need to know about welding thin metal?
When welding thin metal, the main objective is to avoid warping, burn-through and excessive heat-affected zones while still ensuring the weld has enough mechanical strength for the application.
Which is the best alloy for Weld torque?
Dia Mild Steel Stainless Steel Aluminium Alloy M3 0.58 Nm 0.98 Nm 0.39 Nm M4 1.35 Nm 2.30 Nm 0.92 Nm M5 2.67 Nm 4.56 Nm 1.82 Nm M6 4.58 Nm 7.81 Nm 3.12 Nm M8 12.06 Nm 20.55 Nm 8.22 Nm M10 23.11 Nm 39.39 Nm Dia Mild Steel Stainless Steel M5 2.36 Nm 3.65 Nm M6 4.05 Nm 6.25 Nm M8 10.65 Nm 16.44 Nm
