In modern manufacturing industry, die casting technology is widely used in automotive, electronics, machinery and other fields because of its high efficiency and accuracy. In the process of die casting, the state of the die directly affects the surface quality and dimensional accuracy of the casting. Therefore, keeping the mold clean is of great significance to avoid casting surface defects. We will explore in depth the importance of die casting machine mold cleaning, methods and practice cases, aiming to provide useful references for practitioners in related fields.

First, the importance of die casting machine mold cleaning

1. Improve casting surface quality

The dirt and residue on the mold surface will affect the surface finish of the casting, resulting in defects such as pores, shrinkage holes and cracks in the casting. By cleaning the mold regularly, these pollutants can be effectively removed and the surface quality of the casting can be improved.

2. Prolong the service life of the mold

The dirt and residue on the mold surface will accelerate the wear and corrosion of the mold and shorten the service life of the mold. Regular cleaning of the mold can reduce these adverse effects and extend the service life of the mold.

3. Reduce production costs

Frequent mold replacement and maintenance will increase production costs. By keeping the mold clean, the wear and damage of the mold can be reduced, and the production cost can be reduced.

Second, die casting machine mold cleaning method

1. Mechanical cleaning method

(1) sandblasting cleaning method: Impact and grind the surface of the mold using high-speed sand injection to remove surface dirt and residue. This method is suitable for removing stubborn dirt and oxide on the surface of the mold.

(2) Ultrasonic cleaning method: The vibration effect of ultrasonic waves is used to penetrate the cleaning agent into the tiny gap on the surface of the mold to remove dirt and residue. This method is suitable for removing fine dirt and oil stains on the surface of the mold.

2. Chemical cleaning method

(1) Acid cleaners: The use of acid cleaners can remove oxides and rust on the surface of the mold. However, it should be noted that acidic cleaners may cause corrosion to the mold material, so it is necessary to choose the appropriate acidity and concentration.

(2) Alkaline detergent: The use of alkaline detergent can remove the grease and dirt on the surface of the mold. It is also necessary to pay attention to the control of alkalinity and concentration to avoid damage to the mold material.

(3) Organic solvent cleaner: The use of organic solvent cleaner can dissolve the oil and gum on the surface of the mold. This method is suitable for removing non-polar dirt on the surface of the mold.

3. Physical cleaning

(1) Manual wiping method: Use a soft cloth or sponge to dip an appropriate amount of detergent and wipe the surface of the mold. This method is suitable for removing minor dirt and fingerprints from the surface of the mold.

(2) High-pressure water gun cleaning method: The impact of high-pressure water gun is used to wash the surface of the mold. This method is suitable for removing a large amount of dirt and residue from the surface of the mold.

Three, die casting machine mold cleaning practice cases

Taking a large die-casting enterprise as an example, the enterprise has taken the following measures to solve the problem of mold cleaning: First, a detailed mold cleaning plan has been developed, and the cleaning cycle, method and responsible person have been clarified; Secondly, a variety of cleaning methods are combined, including mechanical cleaning, chemical cleaning and physical cleaning. Finally, the staff training and management were strengthened to improve the staff’s cleaning awareness and operational skills. Through the implementation of this series of measures, the company’s mold cleaning conditions have been significantly improved, and the surface quality of castings has also been significantly improved. At the same time, because the service life of the mold has been extended, the production cost of the enterprise has also been effectively reduced.

Iv. Summary and prospect

Through the discussion of the importance, methods and practice cases of die casting machine mold cleaning, it can be seen that keeping the mold clean is of great significance to avoid casting surface defects. In the future, with the continuous development and innovation of science and technology and the continuous improvement of product quality requirements, I believe that die casting machine mold cleaning technology will be more widely used and developed to promote the high-quality development of China’s manufacturing industry to make greater contributions.