Mirror polishing technology of stainless steel dental probe for precision dental medical equipment parts

How to deburr, descale, and mirror-polish stainless steel dental probe parts for precision dental medical equipments?

The main materials used in the production of precision medical devices and parts are stainless steel, alloy steel, titanium alloy, nickel-titanium alloy and other metal materials. Due to their special uses, the surface must not have tiny pits, scratches and other defects, otherwise it will cause bacteria to grow and affect the patient’s life safety. Therefore, the mirror polishing process of the product surface is particularly important. In this case, we will share the process technology and method of automated and efficient deburring, descaling, brightening and mirror polishing of a stainless steel dental medical device part such as a dental probe. This finishing process solution is also applicable to the mirror polishing of precision medical equipment accessories made of other metal materials.

    • jerrylu
    • 2024-06-03


deburring, descaling and mirror polishing of stainless steel dental probe for medical instruments

1. The dental probe of medical instrument before polishing
surface burr, oxide skin on stainless steel probe of dental medical instrument before polishing


stainless steel


burrs and oxide layer on surface


sharp needle


D4*45 MM

Pre-polishing process:


Post-polishing process:


2. Finishing and polishing requirements
  • deburring, descaling.
  • smooth surface, no burrs, oxide scale, mirror polishing.
3. Details of the mirror polishing process for dental probe:
Process steps (1) deburring,descaling of rough finishing (2) brightening of fine finishing (3) mirror polishing
Machinery equipment centrifugal barrel finishing machine centrifugal barrel finishing machine centrifugal barrel finishing machine
Speed highest highest highest
Tumbling media angle cut cylinder ceramic media straight cut cylinder high-density porcelain media walnut shell mirror polishing media
Abrasive media to workpiece ratio 4:1 6:1 8:1
Finishing and polishing compound finishing liquid polishing liquid mirror polish paste
Water appropriate amount,the liquid level is 30mm above the abrasive media appropriate amount,the liquid level is 30mm above the abrasive media no
Polishing time 60 minutes 30 minutes 60 minutes
Remark parts separated and picked up automatically, rinsed with water parts separated and picked up automatically, rinsed with water mirror polishing effect
4. Mirror polishing effect of stainless steel dental probe of medical instruments
The stainless steel dental probe of medical instruments after deburring and descaling and mirror polishing
deburring, descaling and mirror polishing of stainless steel dental probe of dental equipment parts

5. Additional instructions
  • The dental probe is made of stainless steel. After annealing, there is a thick oxide layer on the surface of the product, the color is black, and there will be slight burrs on the edge of the hole. It is necessary to remove the burrs, oxide scale, reduce the surface roughness, and further improve the brightness. Therefore, the finishing process combining rough deburring, descaling and fine finishing and mirror polishing is adopted. The polishing machine uses centrifugal barrel finisher with heavy cutting force angle cut cylinder ceramic tumbling media. The sharp angle of the ceramic deburring media can reach into the grooves, corners, and inner walls to achieve the effect of removing burrs and oxide layers.
    Fine finishing uses precision polishing media without cutting force straight cut cylinder high-density porcelain polishing media, which has a high density and has a polishing and brightening effect, which can further reduce the surface roughness.
    In order to improve the anti-rust performance of the product after water treatment, after fine finishing, use a centrifugal spin dryer to dehydrate and dry the moisture on the inner and outer product surfaces.
  • For mirror polishing, use walnut shell mirror polishing media and polishing paste to achieve a mirror-like surface effect.

6. Final summary
  • In this case study, we demonstrated the process of automated surface deburring and descaling of stainless steel probe used in the dental medical industry to achieve mirror polishing.
  • If you need professional technical support for mirror polishing of stainless steel, alloy steel, titanium alloy, nickel-titanium alloy and other medical equipment accessories or other precision medical equipment parts, you can refer to the above cases:
    Polishing of precision medical equipment
    Polishing of precision medical equipment accessories
    Mirror polishing of medical equipment
    How to polish dental medical equipment accessories
    Mirror polishing of dental equipment parts
    Deburring and polishing of medical surgical instruments (such as scalpels, hemostats, scissors and other tools);
    Artificial prostheses (such as mirror polishing of knee joints, etc.)
    Polishing of oral equipment (such as dentures, dental trays, dental correction equipment, etc.)
    Deburring and polishing of heart bypass stents
    Deburring and polishing of inner and outer walls of stainless steel needle tubes/needles
    Polishing of titanium alloy bone nails
    Polishing of dental steel trays
    Polishing methods of dental devices
    Polishing methods of dental metal finishing and polishing methods

What is a centrifugal dryer?

About Centrifugal Dryer

  • 1.What is a centrifugal dryer?
  • Centrifugal dryer, also called centrifugal hot air dryer, industrial spin dryer and dehydrator, is a commonly used auxiliary equipment in the tumbling finishing and polishing industry.
    It uses a centrifugal disk to rotate at high speed to drive a stainless steel barrel to perform centrifugal motion to dry the water on the surface of the workpiece in the barrel. It is supplemented by heated air generated by an electric heating tube in a heating box connected to the inside of the machine, dry the workpiece.
    It is suitable for the drying, dehydration and degreasing processes of small hardware and mechanical parts such as electroplated parts, watch parts, tableware, springs, screws, plastics, electronic components, etc.

    ShineTec's centrifugal dryer
  • 2. Are centrifugal dryers the same as home dryers?
  • No, centrifugal dryers are completely different machines from household dryers. They belong to different application fields. Centrifugal dryers are industrial equipment used to heat and dry hardware parts, mechanical parts, and precision parts. The power requirements for commonly used machines are 380V/3-phase/50Hz, while household Dryers all use 220V/single phase/50Hz, so the working principles of centrifugal dryers are completely different and cannot be confused.
  • 3. What is the use of a centrifugal dryer?
  • At present, most of the deburring and polishing processes using vibrating, tumbling, and polishing processes use wet finishing process with water, chemical finishing compound, chemical polishing compound and other chemical liquid. After polishing, there will be residual moisture on the surface of the product or a small amount of polishing liquid that has not been cleaned. If not dried, the workpiece will be easily oxidized or corroded when exposed to the air. Only after centrifugal drying with with hot air blowing can the surface be kept dry to prevent corrosion and rust.
  • 4. How to use centrifugal dryer?
  • Using the centrifugal dryer is as follows:

    4.1 First, place the centrifugal dryer and dehydrator on a flat ground. A little trick for installation is to place the machine directly on a used car tire. This can prevent the machine from shaking and facilitate installation.

    4.2 Before starting the dryer, check whether the power switch is working properly and whether the fixed position of the stainless steel inner barrel in the machine is in place. The rotation direction of the barrel body should be in the same direction as the arrow. Turn on the electric heating switch and check whether hot air is discharged after a few minutes. If there is still no hot air after 5 minutes, stop the machine and check whether the air outlet is blocked.

    4.3 The lid must be closed during the dehydration and drying process, and the machine must be stopped when loading and unloading the inner barrel. Note that the materials in the barrel must be rotated evenly before starting, otherwise the centrifugal drying machine will shake violently due to unbalanced centrifugal force.

    4.4 Before stopping, it is best to disconnect the power supply and then apply the brakes. Do not brake without turning off the power supply. The dehydration dryer can only dehydrate without heating, but it cannot only heat without rotating the motor.

    stainless steel barrel of centrifugal dryer
    foot brake of centrifugal dryer
  • 5. What is the processing capacity of a centrifugal dryer?
  • The centrifugal dryer has two models: S400 and S500. The inner barrel dimensions are 300X400mm and 300X500mm respectively. Therefore, this machine is suitable for dehydrating and drying some small-sized parts and components. It cannot operate at full load and the material volume does not exceed the barrel capacity. 80%.
  • 6. How much does a centrifugal dryer cost?
  • Depending on the model of the centrifugal dryer, the processing capacity is also different, and the price starts from a few thousand. It is a practical drying equipment widely used in the finishing and polishing industry. We can also customize non-standard products such as barrel size and heating power according to your needs. Different quotations are available for specific needs.
  • 7. Which centrifugal dryer is the best?
  • The body shell of the centrifugal dryer provided by ShineTec is also made of stainless steel plates. As a responsible manufacturer, we provide a one-year warranty and can also customize non-standard products that meet your requirements according to your special needs. If you don’t know where to find the best centrifugal dryer and are looking for a reliable centrifugal dryer manufacturer, please contact us.
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