For Hydraulic Cartridge Valve Cage with 0.3µm Cylindricity and 2μm accuracy, AAK achieved it in 3 steps

China [CN]

A while ago, Basel from Spain left a message on the website of hydraulic cartridge valve manufacturer AAK: Can you GUARANTEE that the cylindricity of the cage of the hydraulic cartridge valve is controlled within 0.3µm, and the accuracy of within 2μm? With the word“GUARANTEE” capitalized, I can feel Basel's emotions, he should have received promises from other hydraulic cartridge valve manufacturers, but he has been hurt.

After communication, it was learned that Basel had tested the samples from a hydraulic cartridge valve manufacturer in Ningbo China. The 6 testing samples passed the requirements of 0.3µm cylindricity and 2μm accuracy for the valve cage. However, the 480 pcs of shipment had accuracy issue. That is to say, the machining accuracy of the original hydraulic cartridge valve manufacturer is unstable. For hydraulic cartridge valve cages with high precision requirements, subsequent honing is crucial. The consistent thinking of hydraulic cartridge valve manufacturer AAK is a 3-step process: what has been done, why is this done, and what else needs to be done?

For the honing of the hydraulic cartridge valve cage, AAK has an automatic control honing machine SUNNEN from the United States. The equipment is equipped with a SAC size automatic control system. When the honing accuracy meets the system requirements, it can automatically stop, especially with the setting of oil and stone slow advance, providing assurance for the surface roughness and cylindricity of the hydraulic cartridge valve cage. Our technicians first match the corresponding fixtures based on the external contour of the hydraulic cartridge valve cage. Then fit the hydraulic cartridge valve into the equipment, and the equipment can automatically perform honing. This is our first step, making fixtures and then grinding. Why do we have to do this? Most hydraulic cartridge valve manufacturers prefer to use universal fixtures that come with their equipment, but AAK focuses on customizing fixtures based on the hydraulic cartridge valve cage, in order to achieve high-precision stability. What else does AAK do? After honing the valve cage of the hydraulic cartridge valve, compare each valve cage with a plug gauge. If it is not qualified, it will be discarded. Most hydraulic cartridge valve manufacturers in Ningbo China may not have this detail.

AAK hydraulic cartridge valve, the consistent thinking of always takes 3 steps, you can also give it a try!

AAK HYDRAULIC CARTRIDGE VALVES (751) 2024-01-04

https://www.aakindustry.com/info-detail/hydraulic-cartridge-valve-manufacturers-aak751