AAK optimizes the finish machining of the valve body by adopting the finishing process of carbonitriding followed by grinding to precisely control the grinding amount. The manufacturing error model is established, to control the cone angle error of the hydraulic cartridge relief valve cage below 0.06 °, and the grinding tolerance is controlled below 2μm. Although Dante has more than 20 suppliers of hydraulic cartridge relief valves, he resolutely takes AAK as his preferred hydraulic cartridge relief valve supplier.
Dante is from a hydraulic equipment company in Chile. He has been purchasing hydraulic cartridge valves for 5 years, and has no less than 20 suppliers of hydraulic cartridge valves. At the beginning of this year, the engineer requested to purchase the hydraulic cartridge relief valve of HydraForce for a new hydraulic forging press of their company. Dante chose the cheaper one from more than 20 hydraulic cartridge valve manufacturers. 9 months after the equipment was sold, the customer complained that the forging press was unstable. During after sales checking, it was found that the inner cone surface of the hydraulic cartridge relief valve was worn, and the angle deviation was large, causing leakage. The manufacturer of the hydraulic cartridge relief valves advised that it was isolated case and can be replaced with new ones, but 1 month later, there were more and more complaints, and the engineer was unhappy and asked Dante to purchase the hydraulic cartridge relief valves, with the manufacturing error of the cone surface in the valve cage must be controlled within ± 0.8 °, and the grinding tolerance must be within 0.2 mm.
Dante browsed an AAK article "Hydraulic cartridge relief valve with cone angle error of 0.06 ° inside the valve cage" on B2B, then he sent us an email. After a round of communication, he sent the pictures of the abnormal hydraulic cartridge relief valves from the original manufacturer and their original drawings. After the analysis, AAK engineer directly worked out the plan, because we had 3 similar customer cases, AAK is 100% sure to succeed at one time. Dante was very happy and asked AAK to make samples. 50 days later, AAK sent 36 hydraulic cartridge relief valve samples. 2 weeks later, Dante said that their engineer was very satisfied with the inner cone of AAK hydraulic cartridge relief valves. The minimum grinding tolerance of the surface is 0.10 mm, the angle measurement error is 0.06 °, and the accuracy is more than twice that of the original manufacturer. I told him that not only your engineer is satisfied with AAK hydraulic cartridge relief valves, but also your customer would not trouble you within 1 year.
The shape and position error of the inner cone of the hydraulic cartridge relief valve will affect the service life and static and dynamic characteristics of the valve. The error of the inner cone in the manufacturing process must be accurately controlled. AAK has 3 key points to ensure the reliability of the performance of the hydraulic cartridge relief valves:
1. AAK engineers are good at establishing manufacturing error models and have tricks to control the variation relationship between internal cone angle error and grinding amount. According to the structural characteristics of the hydraulic cartridge relief valve cage, a special detection device is designed, to improve the detection accuracy through error correction.
2. During machining, the error caused by tool wear and other reasons shall be strictly controlled and compensated, and the C-axis position detection technology with double reading heads shall be equipped, to ensure the minimum error of the cone surface inside the valve cage.
3. Then use the special 3 coordinate detection device to quickly measure the axial dimension of the sealing circle of the valve cage, so that the manufacturing error is within the control range, and ensure that the internal cone angle and the axial dimension of the sealing circle of the hydraulic cartridge relief valve meet the standard.
A few days ago, Dante told me privately that the boss was very satisfied with his quick rehabilitation, and his salary was also increased. Their engineers recommended AAK as their preferred supplier of hydraulic cartridge relief valves.
AAK hydraulic cartridge relief valve, modeling, processing, detection, 3 checks to control accuracy error, you can also try a small order!
AAK HYDAULIC CARTRIDGE VALVES (408) 2022-11-12
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