Many precision machining manufacturers have encountered the same problem: cross holes for valve bodies, nozzles, molds, and shaft parts, manual grinding, traditional polishing, and high-pressure washing are all used, and the naked eye looks clean. Once the endoscope is enlarged, tiny burrs in dead corners still exist. Rework is repeatedly tossed, the pass rate does not improve, and it is easy to scratch the workpiece and lose accuracy, which is also a common shortcoming of traditional grinding processes.

Why are the small burrs in the cross hole never completely cleared in the traditional way?

In the early stage, the intersection of cross holes, cross holes, and oblique holes was a blind spot for hard tools. Files, brushes, and grinding heads are all hard tools, which can only polish the visible position of the hole, and the angle in the depth cannot reach in or stick firmly. The burrs on the surface can be ground off, but the flying edges remaining at the roots are still there. It seems to be cleaned up, but in fact it is just a superficial effort.

Secondly, traditional grinding has always been caught in a dilemma. If it is heavy, it is easy to strain the hole wall, wear out the aperture, and destroy the tolerance of the workpiece, resulting in the direct scrapping of the parts; if it is light, the burrs are not clean, and mass production depends entirely on the worker's feel. The grinding effect of each product is uneven and the consistency is extremely poor. Especially the microporous and deep hole structures, ordinary tools cannot work at all.

More importantly, the cross-hole burrs generated by machining are metal extrusion flanging, not loose iron filings. The residual hidden burrs will fall off after the equipment vibrates and the fluid initializes, directly causing problems such as oil circuit blockage, valve core stagnation, and lax sealing, which bury potential safety hazards for the operation of the equipment.

If you want to completely solve the problem of cross-hole deburring, the key is to change the process. Suzhou Hsihwa focuses on the deburring process of abrasive flow polishing, which is specially designed for the burr problems of inner holes, cross holes, and deep micropores of various precision workpieces, and is suitable for mass production needs of factories.

Our abrasive flow process uses flexible polymer abrasives, and the medium can easily drill into all the dead ends of the inner holes of the parts like a fluid. Under the action of single and two-way pressure, the abrasive repeatedly flows through the intersection of the cross holes, only slightly grinding the burrs, without damaging the substrate, completely removing the hidden flash from the root, and at the same time softly rounding the sharp corners of the orifice and polishing the hole wall, solving the three major needs of deburring, polishing and chamfering in one fell swoop.

The whole process of fluid polishing is automated, does not rely on manual technology, eliminates problems such as uneven grinding, workpiece damage, and incomplete cleaning. The batch products have uniform precision and high stability. It can be adapted to stainless steel, aluminum alloy, copper, cemented carbide and other materials, and is widely used in the processing of precision parts such as hydraulic valve bodies, fuel nozzles, precision molds, and medical accessories.

Say goodbye to repeated rework and inefficient grinding! Suzhou Hsihwa is deeply involved in the field of precision deburring polishing, and can customize the processing plan according to the workpiece structure to help manufacturers reduce costs and improve efficiency, and completely solve the problem of cross-hole burr cleaning.