Difference between traditional surface treatment technology and modern treatment technology

The difference between traditional surface treatment technology and modern treatment technology:

For metal surface treatment in Dalian, traditional surface treatment technology has three major worldwide problems: high pollution, high energy consumption and low workpiece quality. During the treatment process, waste gas pollution, dust pollution and solid waste pollution will be generated. Severe dust and gas pollution in the processing workshop leads to a very bad working environment for workers. The dust and gas discharged outside the workshop is also one of the important sources of air pollution. In the surface treatment processing enterprise, if environmental protection processes such as alloy catalytic liquid are not used, sealing, isolation and negative pressure operation measures shall be taken for the equipment that generates fugitive dust or harmful gas.

After collecting waste gas and dust, each surface treatment enterprise shall select a mature and reliable waste gas treatment process route after comprehensive analysis according to the production amount of waste gas, the composition and nature of pollutants, temperature, pressure and other factors. For low concentration organic waste gas, adsorption technology should be used when it is valuable for recovery; If there is no recovery value, adsorption concentration combustion technology, regenerative thermal incineration technology, biological purification technology or plasma technology should be used. Aluminum alloy oxidation color generally includes natural color and sky blue.

Anodizing is carried out under the condition of high voltage, which is an electrochemical reaction process; Conductive oxidation does not require electricity, but only needs to be immersed in liquid medicine. It is a pure chemical reaction. Anodic oxidation takes a long time, usually tens of minutes, while conductive oxidation takes only tens of seconds. Electroplating is the process of making metal or alloy deposit on the surface of the workpiece by electrolysis to form a uniform, dense and well bonded metal layer, which is called electroplating. Simple understanding is the change or combination of physics and chemistry. The cleaning technology used by outsourcing factories in the past, because the surface of copper pieces is carbon, the products often turn black after degreasing, which affects the beauty of the products.

However, the samples cleaned with the degreasing and derusting two in one purifying solution have neither fog marks nor residues. The samples are clean and bright, and retain the original color of the product material. The typical example is plastic surface treatment, which is now widely used in many fields such as electronic products, automobiles, sanitary ware, lamps, household appliances, etc. With the further development of engineering plastics and composite material technology, more and more structures will be made of plastics. To obtain metal effects and functions on the surface of these materials, only surface treatment technology is the appropriate manufacturing technology. In order to save energy, counter current rinsing technology can be used for this second washing.

After phosphating, deionized water shall be used for the next washing to ensure phosphating quality. The surface adjustment treatment before phosphating can eliminate the non-uniformity of the surface state caused by alkaline degreasing. The surface (interface) of the parts pretreated with titanium phosphate solution (colloidal titanium) can generate potential and activate the surface, thus generating a large amount of free energy, increasing the number of phosphating crystal nuclei, making the grains more fine, and accelerating the film forming reaction. Remove the oil stain on the workpiece surface.