SolidWorks referred to as (SW) is a new generation of Dassault introduced for the electrical industry design of mechanical 3D design tools. SolidWorks Chinese version of the use of a new parallel and serial product development environment and *** enjoy the 3DCAD model, and is widely used in the design of parts, the design of machinery and equipment, medical equipment, automotive, aerospace and other industries; SolidWorks can meet the user directly add a variety of auxiliary plug-ins, connected to a variety of NC programming software and directly print the model use needs. Industry; SolidWorks can meet the user directly in the software to add a variety of auxiliary plug-ins, connect a variety of NC programming software and directly print the model of the use of demand. About the power of solidworks, in fact, I believe that many partners also have a certain understanding, but for the mastery of the software as well as the use of the software, may be a lot of partners are still scratching their heads! It doesn't matter, if you want to learn how to use solidworks, you've come to the right place. A wealth of solidworks boutique video courses, take you one by one to break through the software basic to advanced operation
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solidworks metal surface treatment
Electroplating
Plated metal or other insoluble materials as the anode, to be plated on the workpiece as the cathode, the cations of the plated metal in the workpiece to be plated on the surface of the plating is reduced to form the plated layer. In order to exclude the interference of other cations and to make the plating layer uniform and firm, it is necessary to use the solution containing the cations of the plating metal as the plating solution to keep the concentration of the cations of the plating metal unchanged. The purpose of electroplating is to change the surface properties or dimensions of a substrate by applying a metal coating to the substrate. Electroplating enhances the corrosion resistance of metals (plated metals are mostly corrosion-resistant), increases hardness, prevents abrasion, improves electrical conductivity, lubrication, heat resistance, and surface aesthetics.
Electrophoresis
Electrophoresis is the electrophoretic coating in the cathode and anode, applied to the role of the voltage, charged paint ions move to the cathode, and the cathodic surface of the alkaline effect of the formation of insoluble substances, deposited on the surface of the workpiece.
Characteristics of electrophoretic surface treatment process:
Electrophoretic paint film has the advantages of fullness, uniformity, flatness and smoothness of the coating, and the hardness, adhesion, corrosion resistance, impact performance and penetration performance of the electrophoretic paint film are obviously better than other coating processes. Electrophoresis process is superior to other coating processes.
Galvanizing
Galvanizing refers to the surface treatment technology of plating a layer of zinc on the surface of metals, alloys or other materials in order to play the role of beauty and rust prevention. Nowadays, the main method is hot-dip galvanizing.
The difference between electroplating and electrophoresis
Electroplating is the process of using the principle of electrolysis to coat a thin layer of other metals or alloys on the surface of certain metals.
Electrophoresis: the phenomenon of charged particles (ions) in a solution moving in an electric field. The phenomenon of charged particles (ions) in solution moving in an electric field. Using the charged particles in the electric field to move at different speeds to achieve separation of the technology is called electrophoresis.
Electrophoresis is also known as - electrodeposition (著), swimming paint, electrodeposition.
Blackening
The blackening of the surface of steel parts is also known as bluing. The principle is to rapidly oxidize the surface of steel products, so that the formation of a dense oxide film protective layer, to improve the rust resistance of steel parts. Blackening treatment is now commonly used methods of traditional alkaline blackening and the emergence of two late room temperature blackening. But room temperature blackening process for low carbon steel is not very good. a3 steel with alkaline blackening better.
In the high temperature (about 550 ℃) oxidized into iron tetraoxide is azure, so it is called blue treatment. At low temperatures (about 350 ℃) the formation of iron tetraoxide is dark black, so called blackening treatment. In the manufacture of weapons, commonly used is the blue treatment; in industrial production, commonly used is the blackening treatment.
The use of alkaline oxidation or acid oxidation; the metal surface to form a layer of oxide film to prevent corrosion of the metal surface, this process is called "blue". Ferrous metal surface by the "blue" treatment of the oxide film formed after the outer layer is mainly tetraferric oxide, the inner layer of ferrous oxide. Bluing (blackening) operation process:
Workpiece clamping → degreasing → cleaning → pickling → cleaning → oxidation → cleaning → saponification → hot water rinsing → inspection.
The so-called saponification, is a soap and water solution at a certain temperature to soak the workpiece. The purpose is to form a thin film of iron stearate to improve the corrosion resistance of the workpiece.
Metal surface coloring
Metal surface coloring, as the name implies, is to give the metal surface "painted" on the color, to change its single, cold metal color, replaced by colorful, to meet the different needs of different industries.
To the metal coloring generally increase the corrosion resistance, and some also increase the wear resistance. But the main application of surface color technology is still in the field of decoration, that is, used to beautify life, beautify society.
Shot blasting
The principle of shot blasting is to use an electric motor to drive the impeller body rotating (directly driven or driven by a V-belt), relying on the role of centrifugal force, the diameter of about 0.2 ~ 3.0 of the projectile (there are different types of cast steel balls, steel wire cut pills, stainless steel pills, etc.) thrown to the surface of the workpiece to the surface of a certain roughness of the surface of the workpiece to make the workpiece become beautiful, or to change the workpiece Welding tensile stress to compressive stress, improve the service life of the workpiece. By improving the roughness of the surface of the workpiece, it also improves the adhesion of the paint film on the workpiece for subsequent painting. The implication is that shot peening can be a pre-process for the paint spraying process.
Sandblasting
Sandblasting is the use of compressed air as a driving force to form a high-speed jet beam will be sprayed (copper ore, quartz sand, emery, iron sand, Hainan sand) high-speed jet to the need to deal with the surface of the workpiece, so that the surface of the surface of the workpiece surface of the external surface of the appearance or shape of the changes that occur as a result of abrasive impact on the surface of the workpiece and the cutting effect of the surface to make the workpiece to obtain a certain cleanliness and different roughness, so that the workpiece surface to obtain a certain degree and a different surface. Due to the impact and cutting effect of the abrasive on the surface of the workpiece, the surface of the workpiece gets a certain cleanliness and different roughness, so that the mechanical properties of the surface of the workpiece can be improved, thus improving the fatigue resistance of the workpiece, increasing the adhesion between it and the coating, prolonging the durability of the coating film, and also conducive to the leveling of the coatings and the decoration.
The sandblasting process has the following characteristics compared with other cleaning processes (such as acid washing, tool cleaning): I. Sandblasting is the most thorough, versatile, rapid and efficient cleaning method. Second, the sandblasting process can be chosen arbitrarily between different roughness, while other processes are no way to realize this. Hand sanding can hit the hairy surface but the speed is too slow, chemical solvent cleanup is cleaned up the surface is too smooth is not conducive to the coating bonding.
Characteristics of shot blasting:
1, cleaning flexibility. Easy to clean up the inner and outer surfaces of complex workpieces and pipe fittings of the inner wall; and is not subject to site constraints, can be moved to the oversized workpieces near the cleanup.
2, equipment structure is simple, less investment in the machine, less wearing parts, low maintenance costs.
3, large energy consumption, must be equipped with high-power air pressure station
4, cleaning the surface is easy to have moisture, easy to produce embroidery.
5, low cleaning efficiency, more operators, labor intensity.
The characteristics of shot blasting:
1, poor flexibility. Restricted by the site, clean up the workpiece is somewhat blind, in the workpiece surface easy to clean up the dead ends,
2, without compressed air to accelerate the projectile, do not have to set up a high-power air pressure station,
3, clean up the surface is not easy to have moisture, is not easy to bear embroidery.
4, the structure of the equipment is more complex, more wearing parts, especially blades and other parts, maintenance labor hours, high cost.
5, high cleaning efficiency, low cost, few operators, easy to realize automatic control, suitable for mass production.
Shot Peening
Shot Peening shotpeening. surface treatment with shot peening, striking force, cleaning effect is obvious. However, shot peening of thin plate workpiece processing, easy to make the workpiece deformation, and steel shot to the workpiece surface (regardless of shot blasting or shot blasting) so that the metal substrate deformation, due to the Fe3O4 and Fe2O3 no plasticity, crushing and stripping, and the oil film and the substrate with the deformation, so the workpiece with oil contamination, shot blasting, shot blasting can not be completely remove the oil contamination. In the existing workpiece surface treatment methods, the best cleaning effect is still sandblasting cleaning. Sand blasting is suitable for workpiece surface requirements of higher cleaning. But China's current general-purpose sandblasting equipment, mostly by the hinged dragon, scraper, bucket elevator and other primitive bulky sand transfer machinery.
Difference between shot blasting and shot peening
Shot blasting uses high-pressure wind or compressed air for power, while shot peening is generally a high-speed rotation of the flywheel will be high-speed ejection of steel sand. Shot blasting is highly efficient, but there will be dead space, while shot blasting is more flexible, but power consumption.
The two processes although the jet power and different ways, but are high-speed impact on the workpiece for the purpose of its effect is basically the same, in contrast, shot blasting is more fine, easy to control the accuracy, but less efficient than the high efficiency of shot blasting, suitable for the shape of the complexity of the small workpiece, shot blasting is more economical and practical, easy to control the efficiency and cost, you can control the granularity of the shot to control the effect of the jet, but there will be a dead end, suitable for the shape of a single workpiece in bulk. Shape of a single workpiece batch processing.
The selection of the two processes mainly depends on the shape of the workpiece and processing efficiency.
Difference between shot blasting and sand blasting
Sand blasting and shot blasting are the use of high-pressure wind or compressed air as a driving force, the high-speed blowing out of the impact of the surface of the workpiece to achieve the cleaning effect, but the choice of different media, the effect is not the same.
After sandblasting, the dirt on the surface of the workpiece is removed, the surface of the workpiece is slightly damaged, the surface area is greatly increased, thus increasing the strength of the combination of the workpiece and the coating/plating layer.
The surface of the sandblasted workpiece is metallic in color, but due to the roughness of the surface, the light is refracted away, so there is no metallic luster, and it is a dark surface.
After shot blasting, the dirt on the surface of the workpiece is removed, the surface of the workpiece is microscopic but not destroyed, and the surface area is increased. Since the surface of the workpiece is not damaged during the process, the excess energy generated during the process leads to surface strengthening of the workpiece substrate.
The surface of the workpiece after shot peening is also the original color of the metal, but because the surface is spherical, the light is partially refracted, so the workpiece is processed as a matte effect.
Phosphorization
Phosphorization (phosphorization) is a chemical and electrochemical reaction to form a phosphate chemical conversion film process, the formation of the phosphate conversion film is called phosphate film. The purpose of phosphorization is mainly: to provide protection to the base metal, to a certain extent, to prevent corrosion of the metal; used for painting before priming, to improve the adhesion of the paint film layer and corrosion resistance; in the metal cold working process in the friction reduction lubrication use.
Passivation
The mechanism of passivation can be explained by the thin film theory, that is, passivation is due to the role of metal and oxidizing properties, the role of the metal surface to generate a very thin, dense, good coverage performance, firmly adsorbed on the metal surface passivation film. This film into a separate phase exists, usually oxidized metal compounds. It plays a role in the metal and corrosion media completely separated from the role of preventing metal and corrosion media contact, so that the metal basically stop dissolving to form a passive state to achieve the role of corrosion prevention.
Advantages of passivation
1, compared with the traditional physical closure method, passivation treatment has absolutely no increase in the thickness of the workpiece and change the color of the characteristics of the product to improve the precision and value-added products, so that the operation is more convenient;
2, due to passivation of the process of the non-reactive state, passivation can be repeatedly added to the use of passivation agent, so the life of the longer, the more economical cost.
3, passivation prompted the formation of oxygen molecule structure passivation film on the metal surface, the film is dense, stable performance, and in the air at the same time has the role of self-repair, so compared with the traditional method of applying rust preventive oils, passivation formed by passivation film is more stable and corrosion-resistant.
Metals or alloys affected by a number of factors, the phenomenon of chemical stability increased significantly, known as passivation. By some passivation agent (chemicals) caused by the metal passivation phenomenon, known as chemical passivation. Such as concentrated HNO3, concentrated H2SO4, HClO3, K2Cr2O7, KMnO4 and other oxidizing agents can make the metal passivation. After the metal passivation, its electrode potential to move in the positive direction, so that it lost its original characteristics, such as passivated iron in the copper salt can not be replaced by copper. In addition, electrochemical methods can also make the metal passivation, such as Fe placed in H2SO4 solution as the anode, with an applied current to make the anode polarization, the use of a certain instrument to make the iron potential increased to a certain extent, Fe passivation. The metal passivation phenomenon caused by anodic polarization is called anodic passivation or electrochemical passivation.
Spraying
The use of pressure or static electricity will paint or powder attached to the surface of the workpiece, so that the workpiece has anti-corrosion and decorative appearance.
Baking paint
Primer, top coat on the substrate, each paint, are sent to the dust-free temperature baking room, baking.
Immersion
It is a microporous (fine seam) penetration sealing process. The sealing medium (usually low-viscosity liquid) through natural penetration (i.e., microporous self-absorption), vacuuming and pressurization methods such as infiltration into the microporous (fine seams) to fill the gap, and then through natural (room temperature), cooling or heating methods such as the sealing medium in the gap will be cured to achieve the role of sealing the gap.
Spraying
The way of spraying paint on the surface of a product and drying it naturally.
Polishing
The use of flexible polishing tools and abrasive particles or other polishing media on the surface of the workpiece to carry out the finishing process. Polishing can not improve the dimensional or geometric accuracy of the workpiece, but to get a smooth surface or mirror shine for the purpose, and sometimes also used to eliminate the gloss (matte). Polishing wheel is usually used as a polishing tool. Polishing wheel is generally made of multi-layer canvas, felt or leather stacked, both sides of the metal plate clamping, the edge of the wheel coated with a uniform mixture of micronized abrasives and grease and other polishing agents. Polishing, high-speed rotation of the polishing wheel (circumferential speed of 20 m / s or more) pressed to the workpiece, so that the abrasive on the surface of the workpiece to produce rolling and micro-cutting, so as to obtain a bright processing surface, the surface roughness is generally up to Ra0.63 ~ 0.01 microns; when the use of non-greasy matte polishing agent, can be matte to improve the appearance of the surface of the bright. The product surface requirements are slightly lower, often using the roller polishing method. Rough polishing will be a large number of abrasives and products in the canister drum, drum rotation, so that the product and abrasives and other random rolling collision in the cylinder to achieve the removal of the surface of the convex front and reduce the surface roughness of the purpose.
Ultrasonic cleaning
It is the use of ultrasonic waves in the liquid cavitation, acceleration and direct flow effect on the liquid and dirt directly, indirectly, so that the dirt layer is dispersed, emulsification, stripping and achieve the purpose of cleaning.
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