10/1/2020
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Optical 3D Valve Seat Measurement
In the automotive sector, high demands are placed on dimensional tolerance and contour accuracy. The Kendrion Group develops, manufactures and sells high quality electromagnetic and mechatronics solutions for industrial and automotive applications. The company’s two business divisions, Passenger Cars and Industrial Drive Systems, are both located at the German site in Villingen-Schwenningen. The product portfolio covers high technology components and systems in the pipe inspection automotive sector, which include diesel and petrol engine injection systems as well as engine management and assistance systems.
Micro-precision components for high pressure control valves are among the most challenging for quality assurance items at Kendrion, and are subject to the highest demands on dimensional tolerance and surface quality assurance. In order to fulfill these requirements, Kendrion uses Alicona optical 3D surface measurement technology for error analysis and control of manufacturing processes.
Reducing Production Costs and Lowering Rejection Rates
“Our clear objective when purchasing the InfiniteFocus measuring system was to reduce production costs, and we have definitely achieved that.” explains Stefan Steimle, Head of Quality Management. “As issues of valve sealing could be positively correlated to the geometrical properties, and then optimized for the affected components, we have been able to significantly reduce the rejection rate in our production.”
In addition to producing very fine atomization of fuel, injection systems have a decisive control function in the injection of fuel into the combustion chamber of a diesel engine. The high pressure control dimension check manufactured by Kendrion regulate the necessary system pressure, in ranges currently extending up to 2700 bar.
The precise roundness and uniform surface finish of the valve seat is crucial in ensuring the correct function of the valves. In order that the pressure matches the requirements of the control unit precisely, the contour accuracy of the valve seat must be measured and analyzed for the slightest deviations. This requires measurement solutions that are both flexible and highly accurate. They also have to be suitable for measuring difficult to access geometries and smallest dimensions of valve elements as well as facilitate the analysis of critical surface structures.
“Of course we reviewed various manufacturers when looking for a measurement system. Other methods initially appeared attractive, but did not meet the dimension check requirements at closer inspection”, explains Steimle. “Measurements must be performed rapidly, but must not compromise accuracy. This is where Alicona offers the most effective method, and has impressive measurement accuracy even with very tight tolerances.”
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16/9/2019
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The Third-party Inspection and Expediting Service
Process Supervision
• Casting & Forging
To be certain that casting/forging process follow proven procedures
• Heat Treatment
To be sure that heat treatment is done properly for all parts, that no portion of the statutory inspection report product is overlooked
• Chemical Analysis & Mechanical Property Tests (and Non Destruction Test).To be certain that:
a) The tests are really carried out
b) Material certificates use actual test data
• Assembling
a) Check internal cleanliness prior to assembling
b) Check whether quantity, material and type of internal parts meet specification requirements
c) Check whether construction details of the assembled products comply with specific requirements of the customers, based on Customer's Technical Specification, and /or Customer Approved Drawing
• Pressure Test
a) Evaluate whether vendor's pressure test procedure documents meet the PRE-shipment inspection standards or client's requirements
b) Ensure that the medium components of pressure test meet standard requirements
c) Ensure that the pressure test equipment was calibrated
d) Ensure that the process of pressure test was in accordance with the procedure and standard
e) Check for leakage or calculate the leakage rate
f) Ensure that the duration of pressure test and China inspection holding meets the standard requirements
• Paint Application
a) Inspect pre-processing and surface condition prior to each paint layer application
b) Measure thickness of each layer applied paint
c) Adhesive test
d) Check protection on un-paint area
• Dispatch
a) Check name-plates and, tags
b) Check whether protections on each product are according to order
c) Check whether sort and construction of packing box/case are in accordance to order
d) Check marking on wooden case
e) Check whether documents in wooden case are according to order
f) Final quantity check
Inspection on among others
△ Casting & Forging thickness check
△ Dimension measurement on machined parts
△ Torque Measurement
△ Certification Control
△ Magnetic Partial Test
△ Ultrasonic Test for welding area
△ Casting & Forging surface examination
△ Pressure Test
△ Painting thickness measurement
△ Radiographic Test
△ Dye-Penetrant Test
△ Fugitive Emission Test
△ Project management inspection
* Testing & interpretation is outsourced to associated ASNT qualified third party laboratories. J-PECO's own inspection services are limited to test witnessing to see whether:
△ Testers of suppliers are qualified
△ Procedures are correct
△ Reports are up to standard
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A Propos
Steel plate check ,Project inspection list and Dimension test report
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