What should I do if vibration grinding and high-precision grinding cause yellowing?

　　What should I do if vibration grinding and high-precision grinding cause yellowing?

　　The following are recommendations for addressing yellowing that occurs during the manufacturing process of vibratory and precision grinding:

　　1. Generally, first check whether the surface finish of the abrasive used in vibratory finishing and high‑precision polishing is acceptable. If you are using rigid beads as your polishing media, inspect them for any cracks or breaks; if present, polish them with a mildly alkaline brightener for about one hour, then thoroughly clean the equipment. Avoid using hard water for short‑duration rinsing, as this can have the opposite effect.

　　2. Insufficient vibration milling time or inadequate equipment cleanliness

　　3. Do the brighteners, polishing agents, or polishing liquids you use have any product quality issues? In general, if your formulation allows for the use of neutral or alkaline brighteners, opt for these whenever possible. Neutral or alkaline brighteners are gentler on the hands, require about one-third less abrasive material than acidic solutions, and offer more reliable performance characteristics compared to acidic or alkaline formulations.

4. If your product has been hand-polished, please verify that all surface scale has been completely removed, as any residual scale may result in inconsistent or insufficient surface finish after vibratory polishing.

　　Key Maintenance Points for Vibration Grinding and High-Precision Grinding

　　1. Do not operate the machine at excessive speed to avoid collisions.

　　2. You must not use flammable liquids to clean the floor, as this may involve operating machinery in an explosive atmosphere.

　　3. When operating the machine, do not lift the control lever; otherwise, the machine may become uncontrollable.

　　4. The machine must be kept indoors and protected from rain and snow; never allow any liquid to be sprayed onto the top of the unit.

　　5. You must not press anything on the machine, as it operates on a delicate balance; when the procedure requires moving the surgical marker, all the cables must be repositioned as well.

　　6. The grounding conductor must be connected to the switchgear and the motor; failure to do so may result in electric shock.

　　Suitable for grinding and polishing large batches of medium, small, and standard parts, with an efficiency 6 to 10 times higher. Vibratory high-precision grinding features high-frequency vibrations that ensure tight, uniform mixing between the workpiece and abrasive stones, steel balls, and abrasives, while inducing a spiral‑like rolling motion. This process can grind, cut, or polish the surfaces of workpieces, particularly those prone to deformation, irregular shapes, or hard‑to‑reach areas within holes.

　　Vibratory grinders generate high-frequency vibrations, enabling the workpiece to be thoroughly and uniformly mixed with grinding media such as millstones, steel balls, and abrasive materials, while simultaneously rolling in a helical vortex pattern. Vibratory high‑precision grinding can be used to grind, cut, or polish the surfaces of workpieces—particularly those that are prone to deformation, have irregular shapes, or feature blind holes—yielding consistent quality. Moreover, samples can be taken at any stage of the process, saving time and enhancing product quality. The material‑selection chamber of the vibratory grinder is equipped with an adjustable gate and a filter screen, allowing for effective separation of ground and non‑ground materials, making material selection straightforward and operation simple.

　　1. It employs internationally advanced principles of helical tumbling motion and three-dimensional vibration to grind parts using rolling abrasives.

　　2. Vibratory grinders are suitable for the grinding and polishing of medium- and small-sized standard parts in large quantities, increasing work efficiency by a factor of 6 to 10.

　　3. During vibration grinding, the original dimensions and geometry of the part are not compromised.

　　4. The high-precision vibratory grinder can process multiple workpieces in a single operation, allows real-time monitoring of part‑processing conditions, enables fully automated unattended operation, and is easy to operate.

　　That’s all for today—no further explanation is needed. If you require high-precision grinding services, please entrust the work to our company.