Products
How much impact does dust have on workshop equipment and products?
Origin：Hefan Hit： Time：2020-03-07
Wear of dust on machinery and equipment
The dusty air stream collides with the wall surface during movement, causing cutting and rubbing, causing wear. Dust in the dust-laden airflow The dust-laden airflow collides with the wall surface during movement, causing cutting and rubbing, causing wear. The dust abrasion in the dusty airflow is proportional to the 2 to 3 power of the airflow speed. The higher the airflow speed, the more severe the dust wear on the wall surface. However, when the dust concentration reaches a certain level, due to the collision between the dust particles, the collision friction with the wall surface is reduced.
In the dust removal system, medium and high-speed smoke strongly scours the inner wall of the dust collector, causing the casing to wear, and the wear of the volute and cone parts of the centrifugal cyclone dust collector is an example. A few millimeters thick steel plate will be locally worn through in less than one year or even several months, which greatly affects the service life of the dust collector. The dust particles in the dusty air settle on the rotating parts of the machine, which will accelerate the wear of the machine parts, affect the working accuracy of the machine, and even make the small precision instrument parts stuck and unable to work.
It is generally believed that the abrasiveness of dust with a particle size of 5 to 10 μm is related to the particle size and composition. Fine dust has less wear than coarse dust. However, in some modern products, such as microcomputers, optical instruments, miniature motors, and miniature bearings, special attention is paid to Contamination and abrasion of dust. For computers, optical instruments, and precision machinery, dust particles with a particle size of 1 μm or more can affect accuracy. To eliminate dust contamination, air cleaning technology must be used.
Impact of dust on product quality
Dust pollution not only affects the appearance of the product, but also causes a reduction in product quality. For example, gypsum powder products are contaminated by black smoke from the oven during the production process, which not only affects the appearance but also the quality. Many electronic products, chemicals, photographic films and other modern products often attach importance to preventing dust pollution during production or operation. In the production of electronic products, even if 0.3μm dust particles fall on the processing surface with a sub-micron pitch of the scribe lines, it will cause harm to the product, which will affect the product performance in a small way and cause the product to be scrapped.
Electronic instruments and large-scale computers used in aerospace and spacecraft can fall into the dust and cause errors. In the information age, it is of special significance to try to remove dust from the air and ensure the high quality and reliability of the product.
