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The hydraulic cartridge directional control valve that HydraForce can't make, is customized by AAK for navigation

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Update time : 2022-10-07 11:20:30

Fossette is from a navigation and aerospace equipment company in Canada, and has been purchasing for 4 years. At the beginning of the year, their customer wanted to customize a marine hydraulic power unit, which was very strict with the hydraulic cartridge directional control valve. He contacted HydraForce for customization. Because of small quantity and tight time, HydraForce could not meet the needs of Fossette. He selected hydraulic cartridge directional control valve manufacturer in Ningbo, who has cooperated for 2 years, to make samples. The manufacturer guaranteed that the geometric accuracy of the valve spool and valve cage is 0.8μm, but it was jammed during equipment commissioning. The hydraulic cartridge directional control valve of this manufacturer is inflexible, and the accuracy is 50% lower than the requirement. At this moment, the manufacturer said that 1.2μm of hydraulic cartridge directional control valve is the limit, and their engineers can't fulfill their promises. Fossette contacted more than 10 manufacturers of hydraulic cartridge directional control valves, but it was also fruitless. The time was wasted for 6 weeks, the customer was dissatisfied, and Fossette started to worry.

 

Fossette saw on B2B that AAK has released a customer case about "0.8μm Accuracy of hydraulic directional control valve", he left a message on AAK Hydraulic Valve website, asking 3 questions consecutively: 1. Accuracy 0.8 μm Hydraulic cartridge directional control valve, are you SURE? 2. Customization time? 3. The quantity is small, are you interested? He specially emphasized “SURE” in capital letters. He may be feared of being disappointed again. I told him that the precision of 0.8μm Hydraulic cartridge directional control valve, is already an existing fact for AAK, it is not a matter of SURE or not. I need a complete drawing to evaluate the probability of customization success as a whole.

 

40 days later, AAK sent 10 customized hydraulic cartridge directional control valves. After that, there was no email from Fossette, and I did not follow it. Generally, the customer will give a feedback 2-4 weeks after receiving the samples. 4 months later, just last week, Fossette informed us that his customer was very satisfied with the marine hydraulic power unit they provided. He was preparing for the annual order and asked me to keep an eye on the production in the workshop to ensure the progress and manufacturing quality of large goods. The hydraulic cartridge directional control valve accuracy within 0.8μm, challenges the processing equipment, the technical team and the manufacturer's quality awareness.

 

1. In terms of finish machining, OKK ultra precision machine tool from Japan is used, and AAK self modified fixture is equipped, accuracy of 0.8μm is not our limit.

2. AAK engineer team, in terms of the selection of raw materials and spare parts, starts from the requirements of working conditions and is targeted, never following the trend. Especially in the customization of high-precision hydraulic valves, the processing of production drawings, the preparation of processing technology, the technical control, they have unique skills and successful cases.

 

3. In terms of inspection, dare not be careless. The German Mahr cylindricity meter is used, with the help of EasyForm software, and 100% full inspection is carried out. Only those qualified can go to the packaging workshop.

 

AAK hydraulic cartridge directional control valve, used in navigation and aerospace, you can also have a small try!

 

AAK HYDRAULIC CARTRIDGE VALVES (372) 2022-10-07

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