Welcome to www.aakindustry.com

AAK mastered the skill 3 years ago to avoid blind hole bell mouth of hydraulic valve blocks that cannot be solved by peers

Views : 175
Update time : 2022-07-26 11:08:36

Palencia is from Spain and has little cooperation with AAK. Some time ago, he emailed us to discuss about the blind hole of hydraulic valve blocks. After several rounds of email communication, it was learned that in the second half of last year, Palencia tried samples with more than 10 hydraulic valve manufacturers because the blind hole quality of the hydraulic valve block was not up to standard. The samples of the hydraulic valve blocks either had a bell mouth in the blind hole, or the surface roughness of the hole wall was not up to standard. It wasted him 4 weeks before and after, moreover, the development fees paid were not refund, which made him very depressed.

 

According to the drawing of hydraulic valve block provided by Palencia, the processing difficulties are mainly concentrated in the blind hole. The processing hole diameter of this hydraulic valve block is small, and the depth is more than 40mm. Only the cutter bar with slender shaft can be used, but the cutter can not all pass through the hole, resulting in easy deformation of the inner hole diameter and axial taper and ovality. In this way, the bell mouth is easy to appear at the hole depth of 10 ~ 20mm, and the surface roughness of the hole wall can not be guaranteed, too. AAK innovated the technology 3 years ago for the difficulties of blind hole processing of hydraulic valve blocks. I directly replied to Palencia that this is a difficult processing, but it is not difficult for AAK. You can directly test the order. If our goods does not meet the requirements of the drawings, the development fee can be refund.

 

4 weeks later, AAK sent 5 samples of hydraulic valve blocks. 2 months later, Palencia placed the annual order of 600 hydraulic valve blocks, with goods shipped every 2 months. Their engineers were surprised why AAK succeeded in making samples at one time, while all other hydraulic valve manufacturers failed previously?

 

For the processing of small and deep blind holes in the hydraulic valve blocks, most hydraulic valve manufacturers cannot meet the high-precision requirements, while AAK has a high-precision CNC processing center imported from Switzerland, and adopts the technology of extruding holes with a patented bladed extruding knife independently developed by AAK. And this processing method has 3 advantages. Most hydraulic valve manufacturers are difficult to master this technical detail in operation, but AAK mastered it 3 years ago.

 

1.    The blind hole of the hydraulic valve block adopts a bladed extruding knife. Through longitudinal feeding, a moderate extruding force is applied to the workpiece surface, and then through the rotation of the knife or workpiece, the height difference between the crest and trough of the knife mark is reduced, and the surface roughness is optimized.

 

2.    During the processing, the hole surface produces slight cold work hardening, which improves the physical properties of the blind hole surface and improves the hardness and wear resistance of the blind hole surface.

 

3.    After machining, the roughness of the hole can reach Ra value of 0.8 ~ 0.4μm. The ovality circle error is 0.01 ~ 0.02mm, the taper error is 0.01 ~ 0.025mm, and the dimensional accuracy of the hole can be controlled within 0.01mm.

 

AAK hydraulic valve blocks, blind hole processing with unique skills, and also with 3 types of pressure test standards to guarantee quality, you can also have a small try!

 

AAK HYDRAULIC VALVES (299) 2022-07-26

Related News
Read More >>
For Pressure Reducing/Relieving Valve equivalent to HydraForce PRES50-30, Brazilian Customer placed regular order 1 year after the trial order For Pressure Reducing/Relieving Valve equivalent to HydraForce PRES50-30, Brazilian Customer placed regular order 1 year after the trial order
Oct .02.2023
This week, we’d like to introduce a hydraulic cartridge valve equivalent to HydraForce PRES50-30. It is a screw in, cartridge style, direct-acting, spool-type, hydraulic pressure reducing/relieving valve
How much money Chinese hydraulic manifold manufacturers can earn, depends on the cognition of the leaders How much money Chinese hydraulic manifold manufacturers can earn, depends on the cognition of the leaders
Oct .01.2023
How much money a person can earn, depends on their own cognition. How much money Chinese hydraulic manifold manufacturers can earn, depends on the cognition of the leaders.
Chinese hydraulic manifold manufacturers inflate with too many orders, and AAK returns to zero in temples Chinese hydraulic manifold manufacturers inflate with too many orders, and AAK returns to zero in temples
Sep .30.2023
Yesterday, a new Indian customer visited Chinese hydraulic manifold manufacturer AAK. They were previously hydraulic manifold manufacturers in India and have been purchasing from Chinese hydraulic manifold manufacturers in recent years.
AAK Hydraulic Directional Control Valve PC08-30, with 30% higher efficiency and 1μm higher accuracy AAK Hydraulic Directional Control Valve PC08-30, with 30% higher efficiency and 1μm higher accuracy
Sep .29.2023
AAK can deliver 500 pcs of hydraulic directional control valves PC08-30 within 30 days, due to higher efficiency unmanned operation