AAK hydraulic pressure control valve has a performance of 2 million times, Davis

Davis comes from a hydraulic equipment company in the United States. He has cooperated with AAK for 4 years, and it is very smooth. It is strange that since an inquiry of hydraulic pressure control valves in the second half of last year, there has been no new inquiry from him, only the reorders of some hydraulic cartridge valves. At the beginning of August, Davis asked about the production time of 200 hydraulic pressure control valves, and only then did we know that why he did not place orders for new valves for a long time. In the second half of last year, he found a hydraulic valve manufacturer whose price was more than 20% cheaper than that of AAK, so he moved the business to that manufacturer. But now troubles come out one after another, the boss is very dissatisfied, and he is under great pressure.

The most troublesome thing is that a three grip electro-hydraulic horse pulling equipment is weak in grasping due to the leakage of the hydraulic pressure control valve. However, the manufacturer of the original hydraulic pressure control valve prevaricated, and the high frequency of use of the equipment caused the wear of the valve body, and even refused to replenish the goods. Davis regretted his death. He caused big trouble for the first time because of the 20% price difference, but he returned to Aak. In the past four years of cooperation, there was no complaint. In order to help Davis get out of the predicament as soon as possible, the production arrangement of the workshop was adjusted. Two weeks later, 200 hydraulic pressure control valves were sent out. Davis also sent me the drawings of other valves from this low-cost manufacturer, and asked me to start preparing.

Aak hydraulic pressure control valve is wear-resistant and leak free, which is ahead of most manufacturers in three aspects, which is also an important three points to ensure the performance of 2 million times.

In terms of materials, Aak adopts German 20crni2mov high carburized bearing steel. Through secondary quenching + cryogenic treatment + low temperature tempering process, its microhardness is 237 ~ 247hv, and its wear resistance is 3 times higher than that of similar steels. Most manufacturers may choose materials, but they may not do a good heat treatment.

On the equipment, Aak uses the Japanese np520x-f full-automatic grinder to finish the valve core. The surface of the processed valve core is like a mirror with an accuracy of 0.8 μ M U.M, the flexibility of the valve core is improved by at least 2 times. Most hydraulic pressure control valve manufacturers can not process the same valve core.

In terms of detection, Aak uses the German diatest small pore diameter measuring instrument to close each valve hole of the hydraulic pressure control valve, and the measurement accuracy range can reach 0.1 at least μ m. Ensure the concentricity of the valve hole is consistent, and most manufacturers use factory sampling inspection.