As someone who works with CNC presses plieuses regularly, I understand the importance of proper maintenance to ensure optimal performance. One of the key aspects of CNC presse plieuse maintenance is regular and effective cleaning. In this guide, I’ll share proven methods for cleaning your press brake, helping you extend the machine’s lifespan, prevent costly breakdowns, and maintain precise bending operations. A well-maintained CNC press brake ensures efficiency and high-quality results in every metalworking project.

In the process of CNC bending machine processing plates, dirt will inevitably be generated over a long period of time. The most troublesome thing is that the hydraulic components in CNC bending machine are difficult to clean due to various reasons. This article will introduce to you several cleaning methods for hydraulic components, hope to help you better use and maintain the CNC machine à cintrer.

CNC Press Brake Maintenance

Solvent Impregnation Cleaning

Solvent immersion cleaning is to immerse the hydraulic components to be cleaned in a cleaning tank with heating equipment (the heating temperature is generally 35~85 degrees Celsius), and add an appropriate amount of cleaning solvent to the water, and at the same time pass compressed air or steam into the cleaning solution. , so that the cleaning solution is in a dynamic state, the soaking time is 4-8 hours, and then the hydraulic components that have been soaked and cleaned are taken out to dry or wipe dry. In addition, for the parts with serious oil pollution, they need to be wiped manually during cleaning. 

Spray Wash

Spray cleaning is to use pressure jet cleaning, which is suitable for continuous operation in large and medium-sized factories and workshops. The prepared heated aqueous solution is sprayed and cleaned at a pressure of 0.3mpa by a corrosion-resistant pump. Generally speaking, the cleaned parts pass through three continuous spraying processes: pre-washing room, cleaning room and hot-water rinsing room. In addition, the contaminants can also be blown away by the air flow generated by the compressed air, of which the pulsating air flow is the best.

Motorized Scrub

Contamination is removed with a soft bristle brush to maintain component precision and low roughness. Such as a mesh oil filter, always use a hard wire brush, which sometimes damages the filter element or changes the filtration accuracy. Another example is the hydraulic valve body with high precision and low roughness, using nylon de-thorn brushes with abrasive balls to brush the ends of the valve holes, the junctions of the holes and the undercut grooves. The brush head of the nylon de-thorn brush is made of black nylon filaments with a diameter of 0.3-0.6mm and green silicon carbide abrasives with a specification of m20.

Ultrasonic Cleaning

Ultrasonic waves of appropriate power are used to absorb into the cleaning solution to form point-like tiny cavities. When the cavity expands to the extent of movement, it suddenly collapses, forming a partial vacuum. The surrounding fluid fills this vacuum at a high speed, resulting in a few Strong pressure boosts and mechanical shocks on the order of thousands of atmospheres peel off contaminants on the surface of parts placed in the cleaning fluid. This method has short cleaning time and good cleaning quality, and can also clean parts with complex shapes that cannot be cleaned manually. Compared with manual work, the efficacy is increased by more than 10 times, and the cost is reduced. However, the porous material of the oil filter has the effect of absorbing sound waves, which may affect the cleaning effect.

Heated Volatilization

Some pollutants can be removed by heating to volatilize them, but this method cannot remove the residual carbon, ash and solid attachments in the hydraulic components of the hydraulic press.