Content of advanced seminar – details and theoretical background

• Basics of threaded fasteners
• Fastening procedures and methods
• Determination of friction coefficients
• Influences of coating and lubrication
• Influences of tools – speed and size
• Load limits of bolts, nuts and clamped parts
• Determination of residual torque, further-torque / back-to-mark
• Testing of bolts and nuts
• Influences while determination of friction coefficients
• 14 steps for calculation of bolted joints
• Determination of clamp load by ultrasonic
• National / international standards and work standards of threaded fasteners

These content you will hear in detail :
Basics of threaded fasteners - background of parameters and limits

Fastening procedures in detail - definition of torque- / angle / yield- controlled assembling, determination of parameters.

Definition of friction coefficients µ, derivation of friction coefficients  µ-total, µ-thread and µ-bearing, bearing surface dB, application of formulas.

Explanation of influence parameters at load limit, influence of tension and torsion on to equivalent stress.

Influence of tools on the target values torque/angle/yield-point of a joint - speed and design size.

Definition of assembling factor alpha, influence on the design of a threaded fastener.

Determination of the current state of a joint - further torque measurement - right determination at different conditions.

Testing of bolts and nuts acc. DIN/EN/ISO 16047 - determination of friction coefficients according coating and lubrication.

Influence factors while determination of fastening parameters / friction coefficients.

Determination of current clamp force in a joint by ultrasonic.

Testing of prevailing torque type nuts according ISO 2320, DIN 267

Discussion of existing most important standards / work standards in the threaded fastener area.

Target of audience :

Planners, quality- and process responsible persons,

employees from the construction, technical design, quality assurance or maintenance 

Participants conditions: 

Practical or theoretical experience in threaded fastener technology 
Participants from basic seminar