In the field of precision machining, titanium alloy parts are highly favored for their high strength and lightweight characteristics. However, due to their surface sensitivity and susceptibility to damage, they also impose almost stringent requirements on the cleaning process. The non-destructive cleaning solution of CNC titanium alloy specialized cleaning machine is like a "gentle bath" customized for titanium alloy parts. While thoroughly removing oil stains and debris, it carefully cares for the accuracy and surface integrity of the parts, hiding a sophisticated technical logic.
The selection of cleaning media is the first line of defense for non-destructive decontamination. The strong alkali and acid cleaning agents commonly used in traditional cleaning, although having strong cleaning power, may cause corrosion to the surface of titanium alloys, forming hard to see spots or oxide layers. Therefore, specialized cleaning machines often use neutral or weakly alkaline environmentally friendly cleaning agents, whose pH value is usually controlled between 6-8. These cleaning agents can decompose oil stains through surface active ingredients without undergoing chemical reactions with titanium alloys. Some cleaning agents also add corrosion inhibitors, just like putting a layer of "invisible protective clothing" on titanium alloy parts, which actively adsorbs on the surface of the parts during the cleaning process, isolating the cleaning agent from direct contact with the metal and further reducing the risk of corrosion. For the residual ultra-fine cutting fluid and emulsion after CNC machining, specific emulsifiers are also added to the cleaning agent to emulsify grease stains into small particles, making them easier to be carried away by water, achieving a balance between efficient cleaning and no damage.
The parameter control of the cleaning process is the core wisdom of the solution. The cleaning pressure of the CNC titanium alloy specialized cleaning machine needs to be precisely regulated. Excessive pressure may impact the surface of the parts, resulting in angular wear or increased surface roughness; If it is too low, it is difficult to remove stubborn stains in deep holes and blind holes. Usually, the pressure is set between 0.3-1.5MPa based on the structural complexity and surface accuracy requirements of the parts. For parts with precision patterns or thin walls, even lower pressure is used for multiple cleaning cycles. The control of cleaning temperature is also crucial. If the temperature is too high, it may cause oxidation and discoloration of the titanium alloy surface, while if it is too low, it will reduce the activity of the cleaning agent. Generally, the temperature is controlled between 40-60 ℃, which can ensure the cleaning efficiency of the cleaning agent and avoid thermal damage to the titanium alloy. In addition, the cleaning time also needs to be strictly controlled, ensuring that the parts are soaked and rinsed in the cleaning agent for the right amount of time through pre-set procedures. This will not result in incomplete cleaning due to too short a time, nor will it increase the risk of damage due to too long a time.
The design of multi-stage cleaning process is to achieve non-destructive cleaning with an additional layer of assurance. The entire cleaning process is usually divided into four stages: pre cleaning, main cleaning, rinsing, and drying. During the pre cleaning stage, high-pressure spraying is used to remove large debris and floating oil adhering to the surface of the parts, reducing the stain load during the main cleaning stage; The main cleaning stage combines soaking, spraying, and ultrasonic cleaning. The high-frequency vibration of ultrasonic waves can penetrate into the small gaps and complex cavities of parts, shaking off hidden oil stains and small debris. The power of ultrasonic waves will be adjusted according to the material and structure of the parts to avoid surface damage caused by cavitation effects due to excessive power; During the rinsing stage, purified pure water is used to thoroughly rinse off any residual cleaning agents on the surface of the parts, preventing the formation of new stains due to residual cleaning agents; Finally entering the drying stage, low-temperature hot air circulation or vacuum drying technology is used to quickly remove moisture without damaging the parts, avoiding residual water stains that affect surface accuracy.
The special structural design of the equipment also provides support for non-destructive cleaning. The inner wall of the cleaning tank is usually made of inert materials, such as polytetrafluoroethylene or 316 stainless steel, which have strong chemical stability and will not react with cleaning agents or titanium alloys, avoiding secondary pollution to the parts. The spray arm and nozzle of the cleaning machine are specially designed to spray water in a fan-shaped or conical shape, evenly covering the surface of the parts to avoid excessive local pressure. For thin-walled titanium alloy parts that are prone to deformation, specialized fixtures will be equipped to fix the parts in the appropriate position and prevent deformation caused by water flow impact during the cleaning process.
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