What is the manual sandblasting machine processing process?
1, surface pretreatment processing: electroplating, painting, anodizing, Teflon, rubber, plastics, metal being tracked, spray welding, gold plating, titanium plating and other pre-treatment and increase product surface adhesion.
2, surface beautification processing: metal or non-metallic products decorative processing and matte or matte surface treatment. Such as: gold, glass, acrylic, Polaroid, crystal glass and other surface matte processing, as well as processing products can make the surface of the metal luster or color.
3, surface cleaning process: metal oxide layer or black skin after heat treatment, surface rust and black skin elimination, non-metallic ceramic surfaces, black spot coloring, removal or painting regeneration, rubber mold and gravity die casting mold to remove oxides, residues or release agents.
4, plastic burr removal processing: plastic, rubber, bakelite products, aluminum die-casting products, such as burr removal. Electronic parts, magnetic cores and other surface finishing and burr removal.
5, etching processing: metal and non-metal surface finishing etching processing. Such as: gold, jade, crystal, agate, seals, stone, ceramic wood.
6, electronic parts processing: electronic parts encapsulation, overflow glue burrs removal, electronic parts finished surface printing but removed, silicon chip matte and etching, wafer back from the quality but in addition to the ceramic electric material cleaning.
7, stress relief treatment: aerospace industry, defense weapons and other cleaning, rust, paint and matting, refurbishment and stress relief.
8, mold processing: mold surface, sandblasting, biting flowers, cleaning, matte surface and other processing, tire mold, shoe mold, bakelite mold, conductive rubber mold, electronic product molds.
9, sandblasting processing: metal sandblasting processing product volume minimum 0.2mm, maximum 5 tons or less. Large plane stainless steel matte matte processing. Non-metallic sand blasting processing, large plane glass, acrylic automatic matte surface processing, plastic burrs burr removal.
What are the main applications of sandblasting process
Sandblasting process is mainly for surface treatment of materials, so that other plating layer better absorbed in the surface of the material, the same sandblasting process can make the surface of the workpiece to produce a special metal flash effect, then, know what are the main applications of sandblasting process?
A sandblasting process to remove oxidized skin
After heat treatment of oxidized skin and salt residue, the use of sandblasting cleanup not only to remove, but also improve the surface finish of the parts, especially for the complex shape of the molds and precision parts of the sandblasting effect is more prominent. Such as: file in the heat treatment after the use of sandblasting not only no damage to the edge of the file part, but also to improve the service life of the file.
All kinds of rare metal plates after hot rolling, sandblasting can also be used to remove oxidized skin and stains, to prepare for cold rolling, improve the surface quality of the plate.
Two clean up the gross surface of precision castings
The use of sandblasting to clean up the surface of the precision castings of the oxidized skin and residues, especially for the complex shape of the precision castings without residual cleanup and polishing is the most cost-effective process method. At the same time can play a role in polishing, improve the surface finish of castings; for example: aviation engine turbine blades, surgical instruments, jewelry and so on.
The use of sandblasting to clean up the die casting parts can make the parts reveal the color consistency of the metal color, so that the appearance of the parts more beautiful. Such as the use of liquid shot blasting effect is better, but also to improve the surface hardness of parts and corrosion resistance. Such as: a variety of instrument shells, frames, jewelry and so on.
The sand casting of aluminum, copper and other metals, the use of sandblasting can also achieve a higher surface quality, saving many intermediate processes.
Three removal of machining workpiece micro burr
The burr is small, the harm is very great, with the advancement of science and technology, mechanical parts are increasingly complex, the precision requirements are higher and higher, the application of the conditions are very strict, do not allow a little burr, such as: 3C communications industry, textile machinery parts, hydraulic components, aerospace industry, precision and complex parts, medical equipment, dental restorations, such as castings, and so on, using sandblasting to remove burrs. The use of sandblasting to remove burrs of high quality and good efficiency, can make the junction of the two surfaces appear very small rounded corners, if you can reasonably select the process parameters can also improve the original surface brightness.
Four for other surface treatment processes to prepare
Plating parts before the use of sandblasting pretreatment, plating layer with strong bonding force, hard chrome plating is especially obvious. Such as: engine piston ring chrome plating, textile machine rollers plated pear surface chrome.
Painted parts, sprayed parts, sandblasting before spraying can enhance the combination of coatings; bonded parts using sandblasting bonding quality, bonding more firmly.
Five sandblasting process for surface decoration
The need for both smooth surface and do not allow the reflection of the parts, the use of sandblasting is an effective process, such as surgical instruments.
Others such as frosted glassware and floral patterns, instrument panels, plastic drawing paper sand surface processing, monocrystalline silicon surface of the mirror, as well as special fabric fabric plush processing, sandblasting has a wide range of applications.
Six main applications of sandblasting process to clean up dirt and rust stains
A variety of molds, such as: forging mold, stamping mold, rubber mold, tire mold, plastic pressure mold, glass products molds, etc., after a period of time is bound to be contaminated with mold releasing agent, such as dirt and burn marks, the use of sandblasting cleanup, the effect is very significant, and at the same time improve the service life of the mold. For food molds, sandblasting can meet the requirements of medical sterilization;
Sandblasting can improve the pressure resistance of ceramic components in the electronics industry; sandblasting process to refurbish the old mechanical parts, automotive spare parts, to achieve the effect of the whole old as new.
Seven sandblasting process of finishing
Sandblasting as a finishing method of processing excellent results, especially for the complex shape of the parts, such as: impeller engine blades, a variety of mold-shaped surface of the polishing is any other method can not be compared. With sandblasting polishing ceramics, diamond, gold and silver jewelry is the most economical method.
Eight improve the use of mechanical parts
Mechanical parts after sandblasting, in addition to the original basis to improve the 0.5-1 level of finish, the sprayed surface has a microscopic uniform pits, can keep the storage of lubricating oil, so that the lubrication conditions have been improved, and thus extend the service life of the parts to reduce the noise of the mechanical operation. Such as: gears, crankshafts, textile machinery, sewing machinery.
Machine parts after sandblasting, especially after liquid blasting, can significantly improve the fatigue strength of parts, corrosion resistance. Such as: springs, turbine blades and so on.
Mechanical parts, castings after sandblasting, the surface of the small defects are easily exposed, which helps the parts crack inspection and flaw detection.
Sandblasting process steps and principles?
Sandblasting process is the use of compressed air as the driving force to form a high-speed jet beam, the spray material and other high-speed jet to the need to deal with the surface of the workpiece, so that the appearance of the surface of the workpiece changes, due to the impact of the abrasive material on the surface of the workpiece and cutting effect, so that the surface of the workpiece to obtain a certain degree of cleanliness and a different roughness, so that the surface of the workpiece to improve the mechanical properties of the workpiece.
Working Principle: Liquid sand blasting machine takes abrasive liquid pump as the feeding power of abrasive liquid, and the stirred abrasive liquid will be delivered to the spray gun through the abrasive liquid pump, and compressed air as the accelerating power of abrasive liquid enters into the spray gun through the delivery pipe.
Inside the spray gun, the compressed air accelerates the abrasive fluid that enters the spray gun and shoots out through the nozzle, spraying it onto the processed surface to achieve the desired processing purpose. In the liquid sand blasting machine, the abrasive pump is the power of material supply and the compressed air is the power of acceleration.
Expanded Information
The main application range of sand blasting:
1, workpiece coating, workpiece bonding pretreatment sand blasting can remove all the dirt on the surface of the workpiece, such as rust skin, and establish a very important foundation pattern on the surface of the workpiece.
And can be achieved by switching different particle size abrasives, such as Fei Zhan abrasives abrasives to achieve different degrees of roughness, greatly improving the workpiece and paint, plating material bonding. Or make the bonding parts bonded more firmly, better quality.
2, casting pieces of gross surface, heat treatment workpiece cleaning and polishing sandblasting can clean up castings and forgings, heat treatment workpiece surface of all the dirt, and will workpiece surface polishing to improve the finish of the workpiece, can make the workpiece to reveal the uniformity and consistency of the original color of the metal, so that the appearance of the workpiece is more beautiful, good-looking.
3, machining parts burr cleaning and surface beautification sandblasting can clean up the surface of the workpiece tiny burrs, and make the surface of the workpiece more flat, to eliminate the hazards of burrs, improve the grade of the workpiece. And sandblasting can make very small rounded corners at the junction of workpiece surface, which makes the workpiece look more beautiful and precise.
4, improve the mechanical properties of the parts, mechanical parts after sandblasting, can produce uniform fine concave and convex surface on the surface of the parts, so that the lubricating oil is stored, so that the lubrication conditions to improve and reduce the noise to improve the service life of machinery.
5, the role of light decoration for some special-purpose workpieces, sandblasting can be arbitrarily realized different reflective or matte. Such as stainless steel workpiece, plastic polishing, jade polishing, wooden furniture surface matte, frosted glass surface pattern pattern, and fabric surface gross processing.
Baidu Encyclopedia - sandblasting process
Differences and advantages of sandblasting processing and shot blasting processing
One, first let's take a look at sandblasting processing, and sandblasting machine
Sandblasting processing is the use of compressed air to the quartz sand blown out of the surface of the parts at high speed for a method of cleaning. Factory also called sand blowing, not only to rust, but also incidental oil removal, very useful for painting. Commonly used in parts surface rust; parts surface modification; in the steel structure, the application of high-strength bolts for coupling is a more advanced method, due to the high-strength coupling is to use the friction between the bonding surface to transfer the force, so the quality of the bonding surface is very high, this time it is necessary to use sandblasting on the bonding surface treatment.
Sandblasting processing is used for complex shapes, easy to remove rust by hand, low efficiency, the site environment is not good, the removal of rust is not uniform. General sandblasting machine has various specifications of sandblasting gun, as long as not particularly small box, can put the gun in to play clean. The supporting products of the pressure vessel - the head is used to remove the oxidized skin on the surface of the workpiece by sand blasting, and the diameter of the quartz sand is 1.5mm to 3.5mm. There is a kind of processing is the use of water as a carrier, driving the diamond sand to process parts, is a kind of sandblasting processing.
Shot blasting is the use of high-speed rotation of the impeller will be small steel shot or small iron shot thrown out of the high-speed impact on the surface of the parts, so you can remove the surface of the parts of the oxidized layer. At the same time, steel shot or iron shot high-speed impact on the surface of the parts, resulting in the surface of the parts of the lattice distortion, so that the surface hardness increases, is a method of cleaning the surface of the parts, shot blasting is often used to clean the surface of the casting or the surface of the parts of the surface strengthening treatment.
Two, we look at the shot blasting, and shot blasting machine
General shot blasting used for regular shapes and so on, a few throw the head up and down, left and right together, high efficiency, small pollution. Shot blasting using the size of the pill is 1.5mm.
Research has shown that, in terms of destruction, the existence of tensile stress on the surface of metal materials than compressive stress is much easier, the surface is compressive stress, the fatigue life of the material is greatly improved, therefore, for shafts and other parts easy to fatigue rupture is usually used in the formation of the surface of the compressive pressure shot blasting to improve the life of the product, in addition, the metal metal material is very sensitive to tensile. This is the reason why the tensile strength of the material is much lower than the compressive strength, which is also the reason why metal materials generally use tensile strength to indicate the material properties.
Sandblasting and sandblasting can play on the workpiece to clean up the purpose of decontamination, the purpose of the process for a cloth to prepare, that is, to ensure that the next process of roughness requirements, but also in order to be the consistency of the surface, shot blasting on the workpiece has a reinforcing effect, sandblasting is not obvious. General shot blasting for small steel balls, sand blasting for quartz sand. According to different requirements, the number of subheads. Precision casting almost every day with sandblasting, shot blasting. _Can sandblasting processing,
Sandblasting processing, aluminum oxidation
What is sandblasting processing
1, what is sandblasting? Sand blasting is the use of compressed air as a driving force to form a high-speed jet beam will be sprayed at high speed to the surface of the workpiece needs to be processed, so that the appearance of the outer surface of the surface of the workpiece or the shape of the workpiece changes, due to the impact of the abrasive material on the surface of the workpiece and cutting effect, the surface of the workpiece to obtain a certain degree of cleanliness and a different degree of roughness, so that the surface of the workpiece to improve the mechanical properties of the workpiece, and therefore improve the fatigue resistance of the workpiece to increase the adhesion between it and the coating, prolongs the durability of the coating film, and also facilitates the leveling and decoration of the coating.
2, the main application range of sandblasting:
Workpiece coating and plating, workpiece bonding pretreatment sandblasting can remove all the dirt on the surface of the workpiece, such as rust skin, and build up a very important foundation pattern on the surface of the workpiece, and can be achieved through the exchange of abrasives with different grain sizes, such as Fei Zhan abrasives to achieve a different degree of roughness, and greatly improve the workpiece and the combination of coatings and plating materials. or to make the bonded parts bonded more strongly. Or make the bonding parts bonded more firmly, better quality.
Castings gross surface, heat treatment after the workpiece cleaning and polishing sandblasting can clean up castings and forgings, heat treatment after the surface of the workpiece of all the dirt, and the surface of the workpiece will be polished to improve the finish of the workpiece, can make the workpiece to reveal the uniformity of the metal of the original color, so that the appearance of the workpiece is more beautiful, good-looking.
Machining parts burr cleaning and surface beautification sandblasting can clean up the tiny burrs on the surface of the workpiece, and make the surface of the workpiece more even, eliminating the hazards of the burrs and improving the grade of the workpiece. And sandblasting can make very small rounded corners at the junction of workpiece surfaces, which makes the workpieces look more beautiful and precise.
Improve the mechanical properties of the parts mechanical parts after sandblasting, can produce uniform fine bump surface on the surface of the parts, so that the lubricant is stored, thus improving the lubrication conditions, and reduce the noise to improve the service life of machinery.
The role of light decoration for some special-purpose workpieces, sandblasting can be arbitrarily realized different reflective or matte. Such as stainless steel workpiece, plastic polishing, jade polishing, wooden furniture surface matte, frosted glass surface pattern pattern, and fabric surface gross processing.
3, sandblasting work should pay attention to matters
a. Before work, you must wear good protective gear, not allowed to work with bare arms. There shall be no less than two persons at work.
b, gas tanks, pressure gauges, safety valves should be calibrated regularly. Gas storage tanks two weeks to discharge dust once, the filter in the sand tank once a month to check.
c, check the ventilation pipe and sand blaster door is sealed. Five minutes before work, must open the ventilation and dust removal equipment, ventilation and dust removal equipment failure, prohibit sandblasting machine work.
d, the compressed air valve should be opened slowly, the air pressure is not allowed to exceed 0.8MPa.
e, the sand blasting granularity should be compatible with the requirements of the work, generally between ten and twenty applicable, the sand should be kept dry.
f. When the sand blasting machine is working, it is prohibited for unrelated personnel to approach. When cleaning and adjusting the running parts, it should be stopped.
g, not allowed to use compressed air to blow dust on the body or joke.
h, after the work, ventilation and dust removal equipment should continue to run for five minutes before closing, in order to discharge indoor dust, keep the site clean.
4, sandblasting process
Sandblasting process pretreatment stage
Sandblasting process pretreatment stage refers to the surface of the workpiece should be treated before being sprayed and plated with protective layer.
Sandblasting process pretreatment quality is good or bad, affecting the adhesion of the coating, appearance, coating moisture and corrosion resistance and other aspects. Pre-treatment work is not done well, rust and corrosion will still continue to spread under the coating, so that the coating in pieces off. After careful cleaning of the surface and the general simple cleaning of the workpiece, with the storm method of coating comparison, the life of the difference can be 4-5 times. There are many methods of surface cleaning, but the most commonly accepted methods are: solvent cleaning, acid washing, hand tools, and power tools.
Sandblasting process stage
Sandblasting process is the use of compressed air as the driving force to form a high-speed jet beam, the spray material and other high-speed spray to the surface of the workpiece to be treated, so that the appearance of the outer surface of the workpiece changes, due to the impact of abrasive on the surface of the workpiece and cutting effect, so that the surface of the workpiece to obtain a certain degree of cleanliness and different roughness, so that the mechanical properties of the surface of the workpiece to be improved.
5, the classification of sand blasting machine
Sand blasting machine is the most widely used products in the abrasive jet, sand blasting machine is generally divided into two categories of dry sand blasting machine and liquid sand blasting machine, dry sand blasting machine can be divided into two categories of inhalation and pressure type.
I. Inhalation dry sand blasting machine
1. General composition
A complete inhalation dry sand blasting machine is generally composed of six systems, namely, structural system, media power system, piping system, dust removal system, control system and auxiliary systems.
2. Working Principle
The inhalation dry sand blasting machine is powered by compressed air, and the abrasive is passed through the sand delivery pipe by the negative pressure formed in the spray gun by the high-speed movement of the airflow.
Inhaled into the gun and shot through the nozzle, sprayed to the surface being processed, to achieve the desired processing purposes. In the inhalation type dry sand blasting machine, compressed air is supplied both.
Second, the pressure type dry sand blasting machine
1. General composition
A complete pressure type dry sand blasting machine work unit is generally composed of four systems, namely, pressure tank, media power system, piping system, control system.
2. The working principle of the press-in dry sand blasting machine.
Press-in dry sand blasting machine is powered by compressed air, through the working pressure established by compressed air in the pressure tank, the abrasive material will be passed through the sand discharge valve.
Pressed into the sand delivery pipe and shot through the nozzle, sprayed to the surface being processed to achieve the desired processing purposes. In the press-in dry sand blasting machine, compressed air is supplied both.
Three, liquid sand blasting machine
Liquid sand blasting machine relative to dry sand blasting machine, the biggest feature is very good control of sand blasting process dust pollution, improve the working environment of sand blasting operations.
1. General Composition
A complete liquid sand blasting machine is generally composed of five systems, namely, structural system, media power system, piping system, control system and auxiliary system.
2. Working Principle
The liquid sand blasting machine takes the abrasive fluid pump as the feeding power of the abrasive fluid, and the well-stirred abrasive fluid is transported to the spray gun through the abrasive fluid pump. The compressed air as the accelerating power of the abrasive fluid enters into the spray gun through the delivery pipe. Inside the spray gun, the compressed air accelerates the abrasive fluid entering into the spray gun and shoots out through the nozzle, spraying it onto the processed surface to achieve the expected processing purpose. In the liquid sand blasting machine, the abrasive liquid pump is the feeding power, and the compressed air is the accelerating power.
6, sandblasting cleaning grade
that is, the cleanliness, representative of the international standard there are two kinds: one is the United States in 85 years to develop "SSPC-"; the second is the development of Sweden in 76 years of "Sa-", which is divided into four grades Respectively, Sa1, Sa2, Sa2.5, Sa3, for the international customary general standard, details are as follows:
Sa1 level - equivalent to the U.S. SSPC-SP7 level. The use of general simple manual brush removal, emery cloth sanding method, which is the four cleanliness in the degree of the lowest level, the protection of the coating is only slightly better than the workpiece is not used to deal with the technical standards of the Sa1 level of treatment: the surface of the workpiece should not be visible oil, grease, residual oxidation, rust spots, and residual paint and other contaminants.Sa1 level is also called manual brush removal cleanup level.
Sa2 level - equivalent to the U.S. SSPC-SP6 level. The use of sandblasting cleaning method, which is the lowest level of sandblasting treatment, that is, the general requirements, but for the protection of the coating than the manual brushing to clean up to improve a lot of. Sa2 level of treatment of the technical standards: the surface of the workpiece should not be visible grease, dirt, oxidation, rust, paint, oxides, corrosion, and other foreign substances, but the defects are limited to no more than 33% of the surface per square meter, can include light shadow; a small number of blemishes, rust due to the surface of the surface of the surface of the surface of the surface of the surface of the surface of the surface of the surface of the surface, including light shade. minor discoloration due to blemishes, rust, oxidized skin and paint blemishes. If there is a dent in the original surface of the workpiece, minor rust and paint will remain at the bottom of the dent.Sa2 grade is also known as commodity cleanup grade.
Sa2.5 - is commonly used in the industry and can be used as the acceptance of the technical requirements and standards of the level. Sa2.5 is also known as near-white cleanup level. Sa2.5 level of treatment of the technical standards: the same as the first half of the requirements of the Sa2, but blemishes are limited to no more than 5% per square meter of the surface, can include slight dark shadows; a small number of blemishes due to the surface, but not more than 5% per square meter of the surface, can also include the surface of the surface of the surface. Dark shadows; a small number of minor discoloration caused by blemishes and rust; oxidized skin and paint blemishes.
Sa3 - level equivalent to the U.S. SSPC-SP5 level, is the industry's highest level of treatment, also known as the white cleanup level. Sa3 level of treatment of the technical standards: the same as the Sa2.5 level, but 5% of the shadows, blemishes, corrosion and so on had to exist.