A modern manufacturing line is designed to deliver a final product with high reliability and always increasing performances. The leak testing is now implemented as one of the methods for process monitoring and quality control: an accurate leak test can surely grant the product quality in terms of reliability, performances and safety. Leak testing is used in-line in the machining process and/or at assembly stage. MG after having acquired the company TRACE (market leader with over 350 systems installed in France and specialized in helium applications), becomes the right partner able to provide leak test stations to be used in the machining process and/or at assembly stage.

MG and TRACE are actually able to supply leak testing stations tailored to the Customer’s needs:

Automatic machines with roller/pallet conveyors as well as gantry loader
(suitable for in-line applications)

 

Automatic machines with robot automation
(suitable for assembly line integration)

Machines with rotary table
(suitable to speed-up the loading/unloading operations)

Machines with automatic sealing tools exchange
(flexible for different part families)

Machines with “sealing tools carriage”
(easily and quickly re-toolable for different part families)

Manual stations for final inspection or as back-up station for repair loops

 

Integrated applications (multi-stations) for assembly lines
(assembly + leak test + dimensional inspection)

Tracer gas vacuum chambers
(high performances for very little leaks)

Tracer gas sniffing stations
(suitable for leaks localization)

	Few reasons to perform the leak testing Ensure integrity of checked parts Ensure good functionality Avoid contamination problems Reduce reworking Reduce production costs Total quality assurance of the parts		Where and how leaks occur: after casting: Porosity Flaws/cracks after machining: Machining errors Part defects after assembling: Missing seals Defective seals Wrong positioning Wrong assembling
	Leak testing techniques Part pressurization and/or water dunk Pressure decay measurement: by relative transducer by differential transducer Flow measurement Mass Spectrometer for helium		Typical checks Oil circuit leakage Water circuit leakage Fuel circuit leakage Gasket leakage Fluid circuit integrity
	Typical part for which the leak test is required Engine block Cylinder head Gear case Differential case Crankshaft & camshaft Oil, water and fuel pumps Manifolds Valves Brake components Gas components Others