2008-03-25

Pressure test and cleaning machine for power steering hose assemblies

Test cycle example: All fittings must be clamped for the machine to start operations. On starting:

• The door closes and the fittings are clamped with higher force. Low pressure flushing in both directions.
• Flow test. Result eg. 23.4 l/min. High and low alarm level is set in article data.
• Volume expansion test. Result eg. 42 ml. High and low alarm level is set in article data.
• High pressure cleaning. X total pulses with eg. 100 bars pressure drop in both directions.
• Pressure increases with eg. 50 bar/s up to 300 bar.
• Stabilization of the pressure for eg. 10 secs.
• Leaktest, search for leaks in eg. 10 secs. Alarm level for pressure drop is adjusted automatically to • eg. 1.5 bar.
• Pressure release to 0.
• Dry blowing of the hose assembly for eg. 10 secs in both directions.
• Approved hoses are marked and then released automatically.
• The door opens.

Not approved hoses must be released manually by holding in the clamp button for 2 seconds. All measurements are individual for each hose. All available information is saved as text in the log-/statistics file.

We have developed a sandwich system of valves, etc. essential to the system. We are almost alone in generating pressure using servohydraulics. The system is safe and user friendly. All functions needed can be found on the block so this means a minimum of connections and hoses to and from the tools. High productivity, quick set up and flexibility ensure good economy. As cleaning and pressure testing are the last stages before delivery it is vital the machine is clean and looks impressive. Our machines are first rate even if they are being used in 3 shifts over successive years.

Information about the company: Lantztech Machines AB