How to Control the Machining Accuracy For The Valve Block?

 

Many industries that use the valve block device require an extremely high level of accuracy. Therefore, we need to do some preparation before machining. The preparation work includes machining and washing/ cleaning several aspects. Proper preparation helps to ensure the process runs more smoothly.

What Are the Preparations Before Processing of the Valve Block?

• Machining

CNC Milling is the benchmark valve block roughing process. We usually tune the machine for an acceptable grinding margin. The surface roughness of the valve block must meet the design needs. This feature especially applies to the installation surface of the hydraulic valve, flange, and pipe joint. We try to ensure there aren’t any markings or other defects that may cause leakage.

• Deburring

It involves removing the edges and thorns after machining the valve. We completely remove the presence of burrs from all channels in the valve block, especially the intersection of intersecting channels. These parts closely relate to the reliability of the entire hydraulic system and need special attention.

• Cleaning

The valve block needs a thorough cleaning before assembly using special cleaning equipment. The cleaning liquid must be antirust like kerosene or oil. When washing, we must maintain a certain cleaning pressure. We clean all flow channels, especially blind holes, to remove any iron filings, dirt, and sundries.

How to Solve the Precision Problem of Valve Block Processing?

• Drilling chip discharge problem

When the drilling chip removal process is not smooth, it is easy to break the drill. The drill in CNC drilling is especially susceptible to breakage. The breakage may subsequently damage the subsequent hole processing tool. Therefore, it is particularly important to solve the problem of chip discharge.

In order to solve the problem of chip removal when drilling small deep holes, we use a macro program to compile a general drilling program to solve. The idea is that if you drill deeper holes, you have to exit the bit with less feed.

In general, when hole depth is greater than 5 times diameter, we perform chip removal once every bit of diameter feed.

• Co-axiality of the outer circle of the hole

In the process of deep hole drilling, the symmetry error and the inconsistent sharpness of the two cutting edges will lead to the drift of the hole position in the drilling process. Under normal circumstances, it is difficult to control 100mm drift in 0. 1mm. Usually, the hole with strict requirements gets hinged after drilling. This feature helps us control the diameter accuracy of the hole and improve the surface quality.

This is Creatingway’s guide to introducing the knowledge of the valve block to you. We look at the completion of the small series of these introductions to improve your understanding of the subject?  Be sure to follow these tips by Creatingway when processing!

What Are The Specific Steps?

You need to have a very clear understanding of the steps involved in valve block processing before creating them. Because if we do not know the whole process, it is very easy to encounter unnecessary trouble in the process of machining. This article sums up small and medium valve block processing steps. This article by Creatingway also you the completion valve block and the debugging processing. If you do not understand any steps, you can contact us at any time!

How to Adjust The Valve Block?

• We clean the valve block before assembly with hydraulic oil circulation to remove residual iron filings, dirt, and impurities. This prevents the accumulation of residue into the system assembly, especially after recycling iron filings into the hydraulic valve body and affecting its use.
• When assembling the valve block, we first use a plastic cover or magnetic patch to seal the oil port of the valve block to prevent dirt from entering the pollution valve block. Secondly, we use the hole method to calibrate again and see whether the connectivity of the hole is consistent with the corresponding hydraulic schematic diagram. Afterward, we check all parts for leaks or errors.
• We also check the valve block on the process plug residue accumulation to ensure it is consistent with the drawings. If the hydraulic valve or hydraulic bolt is on the valve block, the installation strength needs to meet the requirements of the components. We also need to tighten it with a torque wrench to ensure the proper sealing performance of the valve and block.
• Valve block debugging refers to the installation of the hydraulic valve and hydraulic components on it after debugging. First of all, we clean the circuit by constantly replacing the reversing valve to ensure the cleaning of the oil.

If you do not understand any process, you can consult our professionals at Creatingway!  Creatingway concentrates on CNC machining manufacturing, prototype machining, low-volume manufacturing, metal fabrication, and parts finishing services, providing you with the best support and services. ask us one inquire now.

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