The surface roughness of AAK hydraulic valve is ra 0.8-1.6, the geometric accuracy is higher than 0.005mm, and the processing component size can reach the accuracy of grade 6. After comparing 10 domestic manufacturers, American customer finally chose to place order with AAK.
Now many hydraulic valve manufacturers, due to without enough knowledge about the production process and corresponding equipment, the parameters of the hydraulic valves they produced are uneven. Most manufacturers use the traditional production process: expanding - boring - boring - reaming - grinding, which is the most widely used production process and generally suitable for large size blank shapes. However, there are many factories using this technology in the process of valve hole processing, which inevitably leads to the insufficient accuracy of the valve hole of the hydraulic valve. What's more, it is difficult to find this accuracy problem in the later stage.
The dimensional accuracy, geometric accuracy and surface roughness of valve hole are the main factors affecting the product quality. How to ensure the accuracy of the product? It is very necessary to master the reasonable technological essentials. Reasonable process plan is based on the usage scenarios of hydraulic valve, flow medium, accuracy requirements, blank shape condition, component material, length diameter ratio, equipment conditions, master skill and other relevant factors, rather than mechanically produce the hydraulic valve per the parameters singly.
Some time ago, we received an inquiry from an American customer about a hydraulic pressure control valve. The parameters require that the clearance between the valve hole and the valve body of the hydraulic pressure control valve is 0.005-0.015mm, the working pressure of the hydraulic pressure control valve is 21-35Mpa, the diameter of the valve hole is generally 10-41mm, the length of the valve body is 70-300mm, the length diameter ratio is maximum 11:1, and the hole dimension precision of the hydraulic pressure control valve is H6-H7, the cylinder is required to be 0.003-0.005mm, and the surface roughness is Ra 0.2.
5 days after the quotation, the customer asked us to make sample according to the parameters of his hydraulic pressure control valve and was willing to pay the sample fee. After 10 days, we sent the approval sample of the hydraulic pressure control valve. In 1 month, the customer tested and compared the samples from 10 Chinese hydraulic valve suppliers at the same time, and finally chose AAK Hydraulic Valve to place the order.
AAK adopts mature processing technology: reaming - rigid reaming - rigid reaming - Diamond reaming, which has good stability. After reaming, the hydraulic pressure control valve hole is semi-finished by rigid reaming, and then honed by diamond reamer. Rigid boring and reaming cutter with guide ensures the straightness of the component. In addition to internal cooling and chip removal, the processing condition is greatly improved and the high surface finish is guaranteed. At the same time, after reaming, the surface roughness is Ra 0.8 ~ 1.6, the geometric accuracy is higher than 0.005mm, and the component size accuracy can reach grade 6. Diamond reaming is a relatively new technology, but it has been widely used in our factory. As a final machining process, it plays a very important role in controlling the dimensional accuracy.
To ensure the hole accuracy of hydraulic pressure control valve, we need to choose a reasonable processing method according to the specific products, not apply mechanically, which is the production attitude of AAK all the time. Choose AAK hydraulic pressure control valve to ensure your accuracy!
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AAK Hydraulic Valve (60) 2021-07-12