Industrial dirt and industrial dirt cleaning
Industrial production equipment, pipelines, factories, buildings, raw materials, products or semi-finished products, etc., in the process of contact with the atmosphere, environment, production materials, media, products, mechanical oils, etc., due to physical, chemical, electrochemical or biological effects, residual, deposited and generated various types of dirt on their surfaces that are harmful to production operation, product quality or human health, become industrial dirt.
Industrial dirt must be eliminated through technical measures, otherwise the appearance of the contaminated material will be damaged, the material will be eroded and destroyed, production cannot proceed normally, product quality will decrease, raw material and energy consumption will increase, and production accidents will occur frequently. The process of regularly or irregularly removing dirt using physical, chemical, or biological methods is collectively referred to as industrial dirt cleaning.
The source of industrial dirt
(1) Atmospheric sulfur dioxide, hydrogen sulfide, carbon dioxide, oxygen
(2) Cooling medium calcium ions, magnesium ions, bicarbonate ions
(3) Raw materials and products for production
(4) Mechanical oil, lubricating oil, rust proof oil, hydraulic oil and additives, etc
(5) Microorganisms
(6) Surface processing products include old electroplating layers, patent coatings, resin layers, enamel layers, etc
(7) Corrosion product rust scale
Classification of industrial dirt
According to chemical composition - inorganic dirt: metal oxide scale, scale, sediment, etc; Organic fouling: such as oil fouling, polymer fouling, carbohydrate fouling, protein fouling, etc.
The hazards of industrial dirt
Materials, production equipment and pipelines, workshop buildings, buildings, production raw materials and products, etc., are mainly affected by various types of pollution and the formation of dirt, which can cause harm in the following aspects: affecting the normal operation of production, increasing production energy consumption and costs, reducing product quality, causing various accidents, and affecting material performance and equipment life.
The purpose of industrial cleaning
The purpose of implementing industrial cleaning varies for different cleaning objects in different industrial sectors, and the methods used are also different. Generally speaking, the purpose of industrial cleaning mainly includes the following aspects: improving equipment appearance, purifying and beautifying the environment;; Maintain normal production and extend equipment lifespan; Enhance production capacity and improve product quality; Reduce production capacity and improve product quality; Reduce production accidents.
The cleaned material
Common metal materials: carbon steel and ordinary carbon steel, corrosion-resistant carbon steel (corrosion-resistant alloy cast iron with high corrosion resistance in certain media is obtained by adding certain alloying elements to cast iron, abbreviated as corrosion-resistant carbon steel. For example, high silicon cast iron, high nickel cast iron, aluminum cast iron, etc.), as well as low-alloy steel, stainless steel, copper and copper alloys, aluminum and aluminum alloys, titanium and titanium alloys, lead and lead alloys
Organic non-metallic materials: Non metallic materials have characteristics that metals do not possess, such as A. good corrosion resistance B. abundant sources of raw materials and relatively cheap prices; Disadvantages: Low mechanical strength, low rigidity, easy deformation and damage under long-term load, poor thermal conductivity except for graphite, low heat resistance and thermal stability.
Common inorganic non-metallic materials: ceramics, cement, glass, enamel, cast stone, concrete, natural silicate materials, graphite.
Composite material: refers to a material composed of two or more objects with different chemical properties or different organizational phases, combined in a microscopic or macroscopic form.