What is the function of a sandblasting room? What is the role of sandblasting?

Sandblasting room is a large-scale surface treatment equipment, which is used to remove rust from the surface of workpieces. The detailed technical parameters of the sandblasting room can be described as Dongfang Haowei.

Sandblast the surface of the product.

The sandblasting room mainly consists of two parts, one part is the sandblasting system, and the other part is the separation and dust removal system (including local dust removal and whole room dust removal) of sand ** (including floor sand return and sectional collection).

The working principle of the sandblasting system is: the sand is stored in the sandblasting tank, when the sandblasting operation is carried out, the combination valve on the sandblasting tank acts, the sand sealing support on the sandblasting tank is jacked up, the sandblasting tank is pressurized, and at the same time, the sand valve below the sandblasting tank is opened, and the booster valve is opened; In this way, because the sandblasting tank has been pressurized, the sand material is forcibly pressed out from the sand inlet of the sand valve to the sand outlet, and the sand material at the sand outlet of the sand valve is accelerated by boosting the air flow; The accelerated sand airflow mixture passes through the sandblasting pipe to the high-speed sandblasting gun, and in the high-speed sandblasting gun, the sand is further accelerated (booster airflow accelerates to supersonic speed), and then the accelerated sand is sprayed to the surface of the treated workpiece at a high speed to achieve the purpose of surface cleaning and strengthening of the sandblasting operation.

The working principle of the sand collection, separation and dust removal system is as follows: in the sandblasting room, the projectile is collected by a loader or sand sweeping truck to the belt conveyor, and then the belt conveyor is sent to the bucket elevator. Then through the abrasive separator, the abrasive and dust dirt are separated, the useful sand material enters the sandblasting tank for recycling, and the dust and dirt enter the dust removal system, and the clean air is discharged into the atmosphere after the filtration of the dust removal system, and the dust and dirt are stored in the dust cylinder for regular cleaning.

Mechanical ** type sandblasting room collection method:

1. Belt conveyor + bucket elevator + separator.

2. Scraper + belt + bucket elevator + separator.

3. Screw machine + bucket elevator + separator.

Product features: 1. The system uses mechanical power to collect abrasives, sandblasting abrasives can be selected arbitrarily, abrasives are recycled, and the processing efficiency is high;

2. This machine adopts two-stage dust removal, and its total dust removal efficiency can reach more than that;

3. The machine is equipped with an adjustable air volume device to balance the collection of sand from entering the filter element dust collector, reduce the loss of sand and achieve a very good dust removal effect;

4. The main electrical components are imported products, which have stable performance, safety and reliability, long use and simple maintenance;

5. In the upper part of the front roof of the sandblasting room, it is equipped with a "sound and light alarm system" in the sandblasting room, and it is equipped with an emergency stop call button;

6. The electronic control of each system adopts interlock control, and when one of the systems fails, the relevant systems will stop working and stop spraying.

Scope of application: sand blasting room shot blasting room is mainly used for surface sandblasting shot blasting treatment in construction machinery, bridge steel structure, heavy machinery, containers, rolling stock, petroleum and petrochemical, electric power and other industries.

Sandblasting room shot blasting room process:

The workpiece is fed into the sandblasting pill ** Screening and dust removal The workpiece is out, and the process can be automatically controlled.

The function of sandblasting is to make the surface of the workpiece obtain a certain cleanliness and different roughness, so that the mechanical properties of the surface of the workpiece are improved, the fatigue resistance of the workpiece is improved, the adhesion between it and the coating is increased, the durability of the coating film is prolonged, and it is also conducive to the leveling and decoration of the coating.

The process of cleaning and roughening the surface of a substrate using the impact of a high-velocity sand flow. Compressed air is used as the power to form a high-speed jet beam to spray the sprayed material (copper ore, quartz sand, emery, iron sand, Hainan sand) to the surface of the workpiece to be treated at high speed, so that the appearance or shape of the outer surface of the workpiece surface changes.

Abrasive blasting work range:

1. Workpiece coating and sandblasting before workpiece bonding can remove all dirt such as rust on the surface of the workpiece, and establish a very important basic schema on the surface of the workpiece, and can achieve different degrees of roughness by replacing the abrasives of different particle sizes, such as the abrasives of the flying abrasives, which greatly improves the adhesion between the workpiece and the coating and plating. Or take a waiter to make the adhesive bond stronger and better quality.

2. The cleaning and polishing sandblasting of the rough surface of the parts and the workpiece after heat treatment can clean all the dirt on the surface of the casting and heat treatment workpiece, and polish the surface of the workpiece to improve the finish of the workpiece, so that the workpiece can expose a uniform and consistent metal color, so that the appearance of the workpiece is more beautiful and good-looking.

3. The burr cleaning of the machined parts can clean the micro burrs on the surface of the workpiece, make the surface of the workpiece smoother, eliminate the hazards of burrs, and improve the grade of the workpiece. And sandblasting can make a small fillet at the junction of the surface of the workpiece, making the workpiece appear more beautiful and more precise.

4. Improve the mechanical properties of parts, after sandblasting, mechanical parts can produce uniform and fine concave and convex surfaces on the surface of parts, so that the lubricating oil can be stored, so that the lubrication conditions can be improved, and the noise can be reduced and the service life of the machinery can be improved.

5. For some special-purpose workpieces, sandblasting can achieve different reflections or matte at will. Such as the polishing of stainless steel workpieces and plastics, the polishing of jade, the pattern of the surface of wooden furniture, the surface of frosted glass, and the texturing of the surface of cloth.

Analysis of the principle of sandblasting:

Sandblasting is the process of cleaning and roughening the surface of a substrate using the impact of a high-velocity sand flow.

Sandblasting uses compressed air as the power to form a high-speed jet beam to spray the spraying material to the surface of the workpiece to be treated at high speed, so that the appearance or shape of the outer surface of the workpiece surface changes, due to the impact and cutting effect of the abrasive on the surface of the workpiece, the surface of the workpiece obtains a certain cleanliness and different roughness, so that the mechanical properties of the workpiece surface are improved, so the fatigue resistance of the workpiece is improved, the adhesion between it and the coating is increased, the durability of the coating film is prolonged, and it is also conducive to the leveling and decoration of the coating. <>

Sandblasting: It is a method of using compressed air to blow out quartz sand at high speed to clean the surface of parts.

It is also called sand blowing in the factory, which not only removes rust, but also degreases early cracking by the way, which is very useful for painting. Scrambled.

Uses: It is often used for rust removal on the surface of parts and modification of the surface of parts. In the steel structure, the application of high-strength bolts for connection is a relatively advanced method, because the high-strength connection is the use of friction between the joint surface to transmit force, so the quality of the joint surface is very high, then the joint surface must be treated with sandblasting.

Sandblasting is used for complex shapes, easy to remove rust by hand, low efficiency, poor on-site environment, and uneven rust removal.

Sandblasting is the use of compressed air as the power to form a high-speed jet beam to spray (shot peening glass beads, steel shots, steel sand, quartz sand, emery, iron sand, sea sand) to the surface of the workpiece to be treated at high speed, so that the mechanical properties of the outer surface of the workpiece surface change, due to the impact and cutting effect of the abrasive on the surface of the workpiece, the surface of the workpiece obtains a certain cleanliness and different roughness, so that the mechanical properties of the workpiece surface are improved, so that the fatigue resistance of the workpiece is improved, It increases the adhesion between it and the coating, prolongs the durability of the coating film, and is also conducive to the leveling and decoration of the coating, removing the impurities, variegation and oxide layer on the surface, and at the same time roughening the surface of the medium, making the residual stress on the surface of the substrate and improving the surface hardness of the substrate.

Uses of sandblasting:

1 .Cleaning of the surface of the workpiece, oxide scale, residual salt, residual oil, etc. after heat treatment; oxide scale, molding sand, etc. of black (have) color castings; Oxide scale, molding sand, etc. of precision castings are processed without margin; residues, microburrs, etc. of machined parts; oxide scale, welding slag, etc. of weldments; oxide scale, rust layer, etc. of cold and hot-rolled steel plates (section steel); Release agents, deposits, etc. for various mold cavities; sintering residues on the surface of ceramic elements; flash of plastic molded parts; radioactive elements on the surface of objects; bridges, hydropower station gates, ships, buildings; rubber adhesion layer for airport runways; Railroad car; various pipes and containers; oil stains and attachments of old parts; residual paint, rust layer and attachment of containers, etc.; Wrong sintered layers on porcelain; Scratches on decorative surfaces.

2 .Pretreatment before coating the surface of the workpiece 4Finishing of the surface of the workpiece.

It is also called sand blowing in the factory, which not only removes rust, but also degreases by the way, which is very useful for painting.

The process of cleaning and roughening the surface of a substrate using the impact of a high-velocity sand flow. Compressed air is used as the power to form a high-speed jet beam to spray the sprayed material (copper ore, quartz sand, emery, iron sand, Hainan sand) to the surface of the workpiece to be treated at high speed, so that the appearance or shape of the outer surface of the workpiece surface changes, due to the impact and cutting effect of the abrasive on the surface of the workpiece, the surface of the workpiece obtains a certain cleanliness and different roughness, so that the mechanical properties of the workpiece surface are improved, so the fatigue resistance of the workpiece is improved, and the adhesion between it and the coating is increased, It prolongs the durability of the coating film and is also conducive to the leveling and decoration of the coating.

Sandblasting (refers to the removal of rust on the metal surface or plating on the metal surface) with quartz sand, ordinary quartz sand, refined quartz sand: high hardness, good rust removal effect, quartz sand is a quartz particle made by crushing quartz stone. Quartz is a non-metallic mineral, a hard, wear-resistant, chemically stable silicate mineral, and its main mineral component is SiO2. The color of quartz sand is milky white, or colorless translucent, Mohs hardness.

Quartz sand is an important industrial mineral raw material, non-chemical dangerous goods, widely used in glass, casting, ceramics and fireproof materials, smelting ferrosilicon, metallurgical flux, metallurgy, construction, chemical, plastics, rubber, abrasives, filter materials and other industries.

Ordinary quartz sand is generally made of natural quartz ore, crushed, washed, dried, and screened twice, SiO2 90-99% Fe2O3, refractory 1750, appearance: some large particles have yellow skin cysts on the surface.

Lingshou Yapeng-Refined quartz sand is an important industrial mineral raw material, which is widely used in glass, casting, ceramics and refractories, metallurgy, construction, chemical industry, plastics, rubber, abrasives and other industries. Common specifications: in millimeters); 2-4 mesh, 4-6 mesh, 6-10 mesh, 10-20 mesh, 20-40 mesh, 40-70 mesh, 70-120 mesh, 120-200 mesh, 200 mesh, 325 mesh, 600 mesh, 1250 mesh, 2500 mesh.

1. Black corundum is a gray-black crystal with -Al2O3 and iron spinel as the main ore phase prepared by high-iron bauxite or high bauxite plus high aluminite, which is smelted and smelted at high temperature in an electric arc furnace and then cooled, which is characterized by moderate Al2O3 content. The energy consumption of black fused alumina production is about half of that of brown corundum, and there is no need to reduce the atmosphere during the smelting process, and there is very little CO2 emission, which is an energy-saving and environmentally friendly wear-resistant material. Therefore, it has the characteristics of moderate hardness, good toughness, good self-sharpening, low grinding heat generated in use, and not easy to burn the surface of the workpiece.

2. Brown corundum, commonly known as emery, is a tan artificial corundum made of three raw materials, bauxite, carbon materials and iron filings in an electric arc furnace after melting and reduction, so it is named. The main chemical component of brown fused alumina is Al2O3, and its content is in, and it contains a small amount of Fe, Si, Ti, etc. Brown fused alumina is the most basic abrasive, because of its good grinding performance, wide range of application, cheap, widely used.

In general, it is divided into three categories: corundum, silicon carbide, and others. Corundum is an artificial abrasive, brown corundum is generally used, white corundum can be used for high-grade products, and black corundum is also used by a small number of people.

Garnet is also considered corundum, which is natural corundum. Silicon carbide, black silicon carbide, green silicon carbide, is too expensive and is used in gemstones. Others, glass beads, steel shots, steel grit, ceramic sand, resin sand, walnut sand and so on.

White corundum: A type of artificial abrasive. The content of aluminum oxide (Al2O3) is more than 99%, and contains a small amount of iron oxide, silicon oxide and other components, which is white.

The particle size of the product is produced according to international standards and national standards, and can be processed according to the particle size required by users. The general particle size number is F4 F220, and its chemical composition varies depending on the particle size. The outstanding feature is that the crystal size is small and impact-resistant, if it is processed and broken by a self-grinding machine, the particles are mostly spherical particles, the surface is dry and clean, and it is easy to combine with binders.