Mirror aluminum sheet polishing process

Mirror aluminum sheet polishing process

Mirror aluminum refrigerator copper aluminum tube welding video 5083 aluminum pipe fittings veneer with mirror effect is popular, is widely used in lighting lamps and lanterns reflective panels and decorative lamps and lanterns, solar reflective materials, interior decoration, integration ceiling, wall decoration, household electrical appliance panels, electronic products shell, kitchen furniture, car inside and outside decoration, signs, logo, cases, bags, jewelry box, etc. Here today to share making a polished mirror aluminum sheet process.

Mirror polishing technology of aluminum sheet: in addition to the oil – water – polishing – water – washing, profile after oil removal in the polishing groove, namely by 2 to 5 minutes after polishing, can form a mirror, after wash can be directly oxidized. The core of the technological process is polished, to grain, the mirror is done in polishing groove. Polishing possesses the advantages of aluminum consumption is low, profile light. But produce nitrous oxide polishing process of escape, cause serious pollution of the environment and the operators of bodily injury, at the same time, the expensive chemical raw material costs and other factors but also restrain the process of the promotion. Our company through the hot copper mirror technology, specular reflectance can reach more than 86%, and can be used in the anode Oxidation treatment. Rolling of mirror aluminum solves the problems of low efficiency of polishing mirror aluminum in China, residual polishing wax traces on the surface, unstable mirror effect and so on, and greatly reduces the cost and meets the environmental requirements, directly benefiting customers.

Common quality defects and causes of aluminum sheet coil

Common quality defects and causes of aluminum sheet coil



Common quality defects and causes of aluminum sheet coil
1. Non-metal press


Definition: non-metal sundries press into the board and the belt surface. The surface is marked by a yellowish black defect of a dot or a long strip.

Main reason: the rolling process equipment condition is not clean; Rolling process lubricant not quiet; Insufficient injection pressure of process lubricant; The surface of the slab is scratched.

Second, the scratch


Definition: lacuna (or group) of scarring on the surface of a plate or band resulting from the relative sliding or dislocation of the surface of an interfacial edge or surface contact.

Main reasons: when the plate and belt contact with the guide road and equipment during the processing and production, relative friction is generated, resulting in abrasion; The end of cold rolled coil is not even and positive, and there is dislocation and abrasion between layers when the annealing is turned over. The tension during cold rolling is improper, and the interlaminar dislocation occurs when uncoiling. Cleaning acceptance or improper packaging operation caused by sliding between plates caused by abrasion.

Third, bruised


Definition: scratches on the surface or end surface of an aluminum sheet or roll after collision with other objects, and most extruded metals exist at the edge of the depression.

Main reason: the board and roll collide with other objects in the process of transportation or storage; A board, coil, or other projection on an annealing stock or chassis.

Four, become warped edge


Definition: after rolling or shearing, the edge of strip is warped.

Main reason: excessive pressure drop during rolling; The lubricating oil distribution is not uniform during rolling. Improper blade adjustment during shear.

Five, the injured


Definition: a deformed crease formed by the bending of a sheet.

Main reason: the feed is not correct when the machine is straightened with multiple rolls. The force of the sheet is not balanced in turning or handling. The force is not balanced when loading the stack.

Six, flat roll


Definition: the roll is seriously deformed and not round.

The main reason: improper tension in curling process; External compression; Low core strength; Uncoiled coil produced by annealing.

Seven, wrong layer


Definition: the end surface of strip is irregular and staggered between layers, resulting in uneven end surface.

Main reason: the blank is not smooth; Improper control of uncoiling and uncoiling of rolling mill; The pressure is not uniform, and the sleeve runs in series. Improper adjustment of flattening roller; In the process of coiling, the system is abnormal. Bad parallelism of roll system.

Eight, tower

Definition: the coil layer moves to one side to form a tower-like migration.

Main reasons: poor shape of incoming material, improper tension control; Abnormal volume control system; The tape does not bond well when being rolled.

Nine, loose volume


Definition: loose from layer to layer when rolling and unrolling, and sweep the whole volume when serious.

Main reason: the tension during the coiling process is not equal or too small; The pressure of the roller is too low when uncoiling. The steel strip or clip is not firm, which is produced when hoisting.

Ten, the bird's nest


Definition: local "V" type defect on end surface of tape. Such defects occur during the process of rewinding or after unrolling, and some do not occur until a period of time.

Main reasons: improper use of the front and rear tension during the process of winding; The expanding circle is not round or the bottom is not round at the time of winding. Poor core quality.

Attention should be paid to aluminum oxidation treatment

Attention should be paid to aluminum oxidation treatment

In order to create a hard surface on the aluminum surface, some aluminum workpieces will be oxidized to process. In this way, the process effect can not only improve the performance of aluminum workpieces, but also improve the appearance of workpieces. However, some matters need to be paid attention to after the aluminum oxidation treatment, otherwise the use effect of aluminum workpiece is not good, and even lead to the early damage of aluminum.

Rinse with hot water

The purpose is to age the film layer, but the water temperature and time should be strictly controlled. Processing time is too long also can appear the similar problems, appropriate temperature and time is: temperature of 40 ~ 50 ℃ 0.5 ~ 1 minutes.

Second, the dry

It is better to dry by natural air, and the workpiece washed with hot water is slanted on the shelf, so that the free water on the working surface is straight down to the bottom. The water that flows to the corner edge of lower end USES towel to absorb, the film layer color that is dried by this method is not affected, appear natural.

Three, aging

Aging method according to climate condition to decide, there are in the summer the sun exposure in the sun, the aluminum oxide rainy or winter available oven roasted, process condition is: temperature of 40 ~ 50 ℃ 10 ~ 15 minutes.

Repair of unqualified parts

The unqualified conductive oxide film should be selected before drying and aging process. After drying and aging, the film layer is difficult to be removed and will affect the roughness of workpiece surface. For the unqualified workpieces, we can take the following simple measures to solve.

First, the unqualified workpiece is clamped on the clamping device for aluminum anodization. Then, the anodization process of aluminum in sulfuric acid solution is performed for 2~3min. After the film layer is soft and peeling, the conductive anodization can be re-conducted after the alkali solution is cleaned and the nitric acid is exposed to light.

Aluminum oxide pendulum cesium art requirements artifacts into heat treatment or subject to organic solvent cleaning before welding process, free surface oil, but now can't do it, so form a layer of oil on sintering of coking on the surface of workpiece, this layer of coking content in organic solvents is difficult to remove all, if soaked in lye can cause local corrosion, pitting or cause uneven, seriously affecting the quality of the product.

What Decides Oxidation Resistance of Embossed Aluminum Plate

What Decides Oxidation Resistance of Embossed Aluminum Plate

The oxidation resistance is regarded as a crucial element reflecting quality of embossed aluminum plates. It enables embossed aluminium plates to withstand severe exterior surroundings with high temperature, moisture or corrosive materials. All manufacturers declare that they supply embossed sheets of excellent oxidation resistance, yet superior plates are not so easy to be produced because their oxidation resistance depends upon several factors.

embossed aluminum plate[img=300x0]http://www.aluminiumstrip-hm.com/wp-content/uploads/2017/12/stucco_embossed_aluminum_2-300x200.jpg[/img]
From a macro point of view, the oxidation resistance of embossed aluminum plates is up to the plates’ original grains, Cr distribution and content of other metals. The variation among original grains will lead to difference in property of the embossed aluminium sheet. Plates of small and uniform grains are likely to have excellent performance in oxidation resistance. The adding of other metal elements will make spinel structures come into being in an embossed plate. The structures help to stop Fe3 and Fe2 from spreading effectively, and thus eventually enhance the plate’s oxidation resistance. Take Si for example. The more its content there is, the more resistant is the plate against oxygen. Other elements, like Ti, have a similar function. Cr element reacts to oxygen and becomes chromic oxide that has strong oxidation resistance. Therefore, the more evenly distributed is Cr, the more uniform and stronger of an embossed aluminum plate’s oxidation resistance.

How to choose the aluminium sheet for ps plate

How to choose the aluminium sheet for ps plate

The aluminium sheet for ps plate is one of the basic elements for making a high quality PS plate. After long-term development, through years of production research, in recent years, the quality of PS base plate of aluminum processing plants in China has been considerably improved, it is necessary to improve the stability of grades and quality to truly achieve the quality requirements of the aluminum base plate for the PS plate factory, we aluminum ps plate factory must also work hard to creating conditions for the popularization of high-end PS and CTP plates.

aluminium sheet for ps plate
So far, no better material has been found to replace the aluminium plate in the material selection of the PS plate. With the vigorous development of printing industry, the market and production capacity of aluminum PS plate and aluminum base plate have grown rapidly. At present, the aluminum plate and foil project construction boom is in the ascendant, new enterprises are constantly emerging, process technology is changing with each passing day, and the market is changing. The main raw materials for the production of PS plate are PS plate special plate, photosensitive glue. Here we first talk about the PS plate special plate, aluminium sheet for ps plate is generally required to have the following characteristics:
1, Having sufficient strength as a support;
2, Good dimensional viscosity and flatness to ensure printing accuracy;
3, Having a surface state and chemical composition adapted to the template;
4, There is performance situation that can be used as a product.

Packaging standards for aluminum sheets

Packaging standards for aluminum sheets

aluminum is widely used in our life. It has excellent performance and light texture. It plays an important role in modern industry. In the actual aluminum production, aluminum is processed into aluminum sheets of different thickness for the convenience of transportation and use. Because aluminum is an active chemical and oxidizable metal, it must be packaged strictly in transportation and storage
.[img=300x0]http://www.aluminiumstrip-hm.com/wp-content/uploads/2018/04/9-300x300.jpg[/img]
haomei Aluminum Industry in order to ensure that the aluminum sheet in the transport, storage, in order to allow customers to use a stable quality of aluminum sheet. After several years of repeated experiments, a clear standard of aluminum plate packaging has been worked out.
1. First of all, a dense waterproof film is used to wrap the aluminum sheet tightly and carefully sealed with adhesive tape to ensure that no part of the aluminum sheet is exposed to the possible damp air, and sufficient desiccant is placed inside the package. This is to ensure that the aluminum plate internal drying, not to allow aluminum plate to contact any liquid, prevent aluminum plate oxidation or corrosion.
2. Outside the waterproof membrane, wrap a layer of cowhide waterproof paper. This is mainly to ensure that the weak waterproof film will not be damaged, waterproof paper to a certain extent can also be isolated from external moisture, thick kraft paper can be a good insulation of the surface and internal environment temperature difference, to avoid the aluminum plate due to temperature differences too large water vapor condensation phenomenon, prevent aluminum plate oxidation.
3. Outside the kraft paper, the whole layer of corrugated paper will be covered to protect the edges and corners of the aluminum plate with special corrugated protection, and finally with metal wrapping belt will be aluminum plate and wooden saucer packed together. Strengthen several tons of aluminium sheet to prevent the aluminium sheet from falling and sliding during transportation, and avoid friction between aluminium sheet and aluminium sheet after fixing.
After repeated tests, this packaging method can not only effectively prevent corrosion and oxidation of aluminum plate, but also protect aluminum plateduring long-distance transportation, aluminum plate will not be deformed and scratched because of transportation.

Why use calcium silicate board instead of aluminum sheet

Why use calcium silicate board instead of aluminum sheet



The thermal insulation decoration integrated board has used calcium silicate board to replace the aluminum sheet as the decoration panel, calcium silicate board is a new type of green environmental protection building materials, in addition to the traditional gypsum board functions, more superior fireproofing performance and moisture resistance, the advantages of long service life. To give you an idea of why aluminum sheet is being replaced, today we’re going to look at the contrast between calcium silicate and aluminum.

First of all, both of them are slightly more expensive in terms of price, because the flatness of aluminum plate itself is higher, which may be better in aesthetics. However, when aluminum plate is used as external insulation for exterior wall, as the anchor is fixed on aluminum plate, its cold and hot bridge is not easy to handle.
Second, the same act the role of the surface heat preservation to decorate a whole plate on the aluminum plate and calcium silicate board, the earlier the problem must be aluminum, because everything exists fatigue period, aluminum plate is dramatic change due to temperature will heat sensitive material is heated, the heat preservation to decorate a whole plate will follow violent ACTS the role of surface temperature change, and calcium silicate board is heat-sensitive heated due to temperature change will be less severe, the same act the role of surface is the same, the same act the role of the surface heat preservation to decorate a whole plate because of the temperature changes in different period of fatigue is different also, ACTS the role of the surface of aluminum plate for fatigue life period shorten, life will be shortened, and longer service life of calcium silicate board.
Moreover, the linear expansion coefficient of aluminum plate is much higher than that of calcium silicate plate. When the aluminum plate expands with heat in the current period, the stress cannot be released and will cause deformation.
To sum up, the heat preservation to decorate a whole plate use calcium silicate board is inevitable, calcium silicate board is made by silica powder, calcium oxide, fiber mortar filter into planks, and high temperature steam for oxygen reduction into calcium silicate rocks, than [color=rgba(0, 191, 255, 0.8)]aluminum plate as a better heat preservation to decorate a whole plate of veneer, veneer is currently on the market do better material.[/color]