From manufacturing plants in electronics, electrical appliances, medicine, food and other industries, to laboratories for scientific research, and dust-free wards in hospitals, these places will be used on a large scale to clean workshop (clean room) processes.
This is a hard condition of their production environment, and the main place where dust is generated in addition to the external invasion, is the internal ground, so the dust-free workshop has higher requirements for the ground, and how to choose the right ground, please see the introduction of Xiaogu below.
Dust-free shop definition
The main function of the dust-free workshop is indoor pollution control, without a clean room, pollution-sensitive parts cannot be mass-produced. In FED-STD-2, a cleanroom is defined as a room with air filtration, distribution, optimization, construction materials and devices, wherein specific rules of operation procedures to control the concentration of airborne particles, so as to achieve the appropriate level of particle cleanliness.
Commonly used flooring classification
(1) Terrazzo ground; good integrity, smooth, not easy to dust, can be washed and anti-static; the disadvantage is inelastic. It is often used in dispensing workshops, needle and tablet workshops, laboratories, toilets, locker rooms, etc. that require frequent scrubbing.
(2) Plastic floor: smooth, slightly elastic, not easy to dust, easy to scrub and clean, wear-resistant, corrosion-resistant, but easy to produce static electricity, easy to age by ultraviolet radiation. Therefore, it is not suitable for places where ultraviolet lamps are often used for sterilization. It is generally used in changing rooms, packaging rooms, laboratories and other rooms. Due to the different telescopic performance of plastic panels and concrete substrates, they should not be used in large-area workshops, otherwise they will cause shelling.
(3) Acid-resistant porcelain plate floor: made of acid-resistant clay, can resist corrosion, but the quality is brittle, can not withstand the impact, after crushing will reduce corrosion resistance. Xiaogu told everyone that this kind of ground can be used for sections with corrosive media in the raw material workshop, due to the complexity of construction and high cost, it should be used for local areas with corrosive media dripping. For example, equipment with corrosive media is centrally arranged, and then this part of the ground is enclosed with a water retaining line, and the inside of the retaining line is paved with such a ground.
(4) Cement curing ground: If there is heavy machinery in the factory, forklifts are rampant, the floor is required to be hard enough, and the service life is long enough, the cement cured floor naturally becomes the first choice. Concrete sealing curing agent can penetrate into concrete, through chemical reaction with calcium, magnesium plasma in concrete, the formation of a hard crystalline substance, in three-dimensional space to form a mesh structure, so that the cement gel structure increases and strengthens, the composition of the concrete solidifies into a dense whole. The gel void in the concrete becomes smaller, which can block the pores of the concrete and increase the density of the concrete, so that the strength, hardness and wear resistance of the concrete floor are greatly improved, and the use functions of dustproof, hard, wear-resistant and clean are achieved.
Dust-free workshop floor sand
Some people will look at it and say that the floor of my dust-free workshop has been ashed, what should I do? It's okay, little solid below to solve.
Floor sanding solution:
After the local flat has been sanded, do not rush to let the decoration workers on it to wipe or make a mixed soil cushion layer to cover the sand layer, which will make it empty in the workmanship, and the floor layer will appear bow and bump or be exposed to dust from the floor slit.
It should be checked whether there is a batch of scrapers on the ground, and for those that have been scraped and cracked and empty, they should be removed. There is cement slurry on the ground and wall ash, putty, etc. that fall on the ground during construction, which should be cleaned up and eradicated, and then reinforced with concrete sealing and curing agent, and then do other construction work after it is cured.
1. Thoroughly clean up the debris on the old ground, and then use a grinder to grind out a new concrete floor and rinse it.
2. After the surface of the ground is dried, spray concrete sealing and curing agent on the concrete floor with a sprayer or sprinkler bucket, and the amount of use is determined according to the structure and porosity of the concrete surface.
3, the curing agent full penetration takes about 4-6 hours, if at this time the curing agent in the concrete surface began to become gelatinous, should be immediately rinsed with water and swept away. Rinse should be fully cleaned with a hard broom and sweep away excess clear water.
4. 5-6 hours after cleaning, you can use the high-speed polishing machine to polish the surface. Once the surface is completely dry, it is ready for use.
summary
Well, how to choose the right floor for the dust-free workshop? Xiao Gu shared it here.