Inner surface polishing technology

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  2. Inner surface polishing

We polish the internal surfaces of metal tubes, pipes, nozzles and metal_AM channels. We are a venture company with original technology and know-how that we have developed independently.

Medical Microporous Metal Tubing

Internal surface roughness of medical/analytical metal tubing of 0.24mm ID x 500mm L=500mm, eliminating waviness down to Ra 0.008μm (8nano-meter) It is possible to finish up to an ultra-mirrored surface.
Especially, dross removal, oxide film removal, mirror polishing, and dimensional cross adjustment of medical parts such as stent parts and catheter parts made of Ni/Ti, Co/Cr, SUS3016, and SUS304 materials after laser processing can be completed in one process.
Recently, requests for special applications such as injection needles for bio-cell injection and nozzles for analytical testing have been increasing.
◉The inner surface of the metal tube should be rough and mirror-like (Ra=0.1μm or less) in order to transfer the medicine in a stable amount.
◉The inner surface of the metal tube must be rough, otherwise the blood will adhere to the rough surface and cause internal blockage.
Because of this, the exact amount of fluid cannot be aspirated and an accurate component test cannot be performed.
It is not possible to transfer and inject a stable amount of fluid when injecting fluid.
Improvement of algovision → Verify the surface roughness and dimensional intersection improvement of the specified value by internal grinding by fluid polishing.

Catheter laser cut dross /
dross and oxide film adhered            


After fluid polishing (dross removal and mirror polishing of inner oxide film Ra 0.008 μm = 8 nm achieved)


Not only the dross, but also the oxide film formed on the inner surface was removed to achieve mirror polishing.

Metal Additive Manufacturing

We can polish the complex shapes, round shapes, and spiral micropores of 3D metal powder parts to a mirrored surface, which have been increasing rapidly in recent years.
There has been an increase in requests to polish the inner surface of channels through which gas or liquid flows.
We have been developing processes related to fluid polishing that cannot be imitated by other companies, and we have been able to accumulate results for various difficult development requirements from many customers. We can handle a wide variety of materials, including Inconel, SUS, Ti, Al, Ni, Cu base, and maraging steel.

Fluid polishing prototype sample example product(AM Manufacturing: JAMPT / Fluid Polishing: ALGOVISION / Raw Material: SUS316L)
(left side)before/From the left, Φ2, Φ1.5, Φ1Channel (Right side)after/From the left, Φ2, Φ1.5, Φ1Channel

channel polishing and surface modification of molds

Our fluid polishing technology was originally developed for the purpose of removing the molten re-solidification layer (also known as the work-altered layer/white layer) of steel molds such as cemented carbide molds and SKD molds after WEDM and EDM processing.
Initially, the molten re-solidified layer was developed as a "combined fluid polishing" technology combining oxidation treatment and fluid polishing techniques, and the process technology has been developed to make further mirror polishing possible.
It is now possible to remove the fused re-solidification layer easily in 5 to 15 minutes without oxidation treatment. The slurry used does not use expensive diamond particles, but instead is a mixture of inexpensive hard mineral-based materials that are readily available in the market and are dispersed in tap water, which reduces running costs and makes the system easy for anyone to use.
We also offer technical consulting for removal of the molten re-solidification layer (work-altered layer/white layer).