AAK Hydraulic Manifold Unique Valve Hole Processing Technology

Bekov is from a Russian hydraulic equipment company. Most of the hydraulic
manifolds in the past 3 years were purchased from Ningbo and went smoothly. A
batch of hydraulic manifolds purchased last time stumped him due to the
precision of valve block holes. At the beginning of the year, their customer
customized a hydraulic power unit. From the perspective of hydraulic manifold
alone, it was not difficult, but the requirements for the accuracy of the valve
block bore diameter were high. He chose a hydraulic manifold manufacturer in
Ningbo who had cooperated for 3 years to place the order. He thought that the
PO was confirmed by the supplier and his work was completed, but from the start
of the sample, trouble came.

After 50 days, the hydraulic manifold manufacturer advised that he could not
achieve the accuracy of the valve block aperture. After the processing of 10
valve blocks, only 2 of them were qualified, and 80% of them were scrapped, so
he had to give up. The supplier seems to be relieved, but it is less than 3
months from the customer's delivery date, and the hydraulic manifold supplier
has not been determined yet. A week later, Bekov contacted more than 10
hydraulic manifold manufacturers, but none of them were confident to accept the
order. Bekov was extremely anxious.

Last month, I received an email from my old Russian customer Sumarokov:
Aperture φ 10.3mm, hole depth 90.5mm, coaxiality requirement: φ 0.025mm,
cylindricity requirement is φ 0.02mm, surface roughness Ra value is 0.8 μm,
these precision requirements should not be difficult for AAK, right? I was a
little confused. After communication, I learned that Bekov, a friend of
Sumarokov, faced the problem of aperture accuracy when purchasing hydraulic
manifolds. I replied to Sumarokov, with your trust, I will solve the problem as
quickly as possible to ensure that Bekov is at ease.

According to the series of drawings of hydraulic manifold from Bekov, besides
the aperture accuracy, all the others are conventional parts. However, AAK
encountered this aperture precision in processing valve blocks 3 years ago, so
now it is fine for AAK. After 45 days, the hydraulic manifold sample is sent
out.

The day before yesterday, Bekov sent an email. The accuracy of every hole
diameter processed by AAK was approved by their engineer. AAK hydraulic
manifold was installed on their hydraulic power unit, and the equipment was
running normally, just waiting for the purchase quantity of their customer. AAK
hydraulic manifold valve hole precision is ahead of its peers, which originates
from 3 points:

1. Material selection control: before processing, ensure that the material is
free of casting defects and the blank allowance is uniform. Optimize the
processing and cutting parameters according to the accuracy.

2. Equipment selection: Mikron machining center imported from Switzerland can
ensure that the coaxiality of fixture and equipment rotation and cutter bar is
controlled within 0.01mm, and the coaxiality of precision valve hole is
controlled within φ 0.025mm.

3. Process optimization: from drilling, reaming, rough reaming, fine reaming,
reaming and extruding without edge, 5 links. The increase in outer diameter of
each link shall be controlled at 0.02 mm, and kerosene cooling shall be
adopted. It replaces the traditional process of "drilling, reaming,
countersinking, reaming and grinding", and avoids the expansion of orifice and
instability of aperture.

AAK hydraulic manifold, not only precision, you can also try a small order!

https://www.aakindustry.com/info-det , ail/hydraulic-manifolds-aak386

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