Aluminum Plate Processing Deformation Solution

 The deformation of Aluminum plate is the problem that manufacturers often encounter.

First of all, we must know the main reasons for the deformation of the aluminum sheet: the deformation caused by the internal stress of the aluminum sheet blank, the deformation caused by the heat of the aluminum sheet, and the deformation caused by the clamping force.

1. Reduce the internal stress of the aluminum sheet blank

Partial internal stress is removed by natural or artificial aging and vibration treatment.

2. Improve the hot cutting ability of the tool

Reasonable selection of tools and strict control of tool wear are also one of the effective ways to improve the deformation of aluminum sheets.

3, improve the clamping method

The deformation can be effectively reduced by using a suitable processing and clamping method in the processing of aluminum sheets.

Can the aluminum plate be welded?

Many customers will ask that can the aluminum plate be welded?.Welding is a method often used in the processing of aluminum sheets.In fact, the welding of aluminum plates is mainly based on materials. Most aluminum plates, such as 1060 aluminum plate, 5052 aluminum plate and 6061 aluminum plate, have good weldability and good processability.

What are the precautions when welding aluminum plates?

1. Selection of welding wire for aluminum plate

Pure aluminum plate (1060 aluminum plate) welding wire purity is generally not lower than the base material;

The chemical composition of the aluminum alloy plate welding wire is generally corresponding to or close to the base material;

The content of corrosion resistance elements (magnesium, manganese, silicon, etc.) in the aluminum alloy plate welding wire is generally not lower than that of the base material;

2, The choice of aluminum plate welding method

Gas welding is generally used when repairing aluminum sheets and castings of poor quality.

Welding rod arc welding can be used for repair welding of aluminum alloy castings.

The inert gas shielded welding (TIG or MIG) method is a widely used aluminum and aluminum alloy welding method.

Pure aluminum and aluminum alloy sheets can be tungsten-arc argon arc welding or tungsten-pole argon arc welding.

Pure aluminum and aluminum alloy thick plates can be used for tungsten arc welding, argon-helium mixed tungsten gas shielded welding, gas metal arc welding, and pulsed gas metal arc welding. MIG welding and pulse gas metal arc welding are used more and more widely (argon or argon/helium mixture)

The Benefits of 6061 Aluminum Plate After Anodizing

 (1) Good processability: The positive-grade oxidation 6061 aluminum plate has strong decoration and moderate hardness. It can be easily bent and formed for continuous high-speed stamping, which is convenient for direct processing into products, eliminating the need for complicated surface treatment and greatly reducing product production.

(2) Good weather resistance: Anodized 6061 aluminum plate with standard thickness oxide film (3μm). It has no long-term discoloration, no corrosion, no oxidation, no rust. An anodized aluminum plate with a thick oxide film (10 μm) can be used outdoors, and can be discolored without being exposed to the sun for a long time.

(3) Strong metal feeling: The anodized 6061 aluminum plate has high surface hardness, gem-quality, good scratch resistance, no paint coverage on the surface with retaining the metallic color of the aluminum plate, highlighting the modern metallic feeling, improving the grade and added value of the product.

(4) High fire resistance: pure metal products is no paint and any chemical substances on the surface and meets fire protection and environmental protection requirements .

(5) Strong anti-staining property: The anodized 6061 aluminum plate does not leave fingerprints, there is no stain trace, no corrosion spots and is easy to clean.

(6) Strong applicability: The anodized 6061 aluminum plate is widely used for metal aluminum ceilings, curtain wall panels, aluminum-plastic panels, fireproof panels, honeycomb aluminum panels, aluminum panels, electrical panels, cabinet panels, furniture panels and so on.

How to control the flatness within 0.01 in aluminum sheet processing?

 Q: The aluminum plate processing is easy to deform, but the good clamping process can minimize the deformation. How do you handle the aluminum plate? The outer shape is 400*500.The flatness is 0.01.

answer:

basic condition:

The machine tool has a good verticality between the Z axis and the XY axis, otherwise it will be nothing to do.

Clamping:

To reduce the deformation to a smaller extent, it is required to have a high plane uniformity on the bottom positioning surface; try to use a clamping device with a small clamping force – in the case where the required yield is very high and the output is not high, AB can be selected. Glue or glue such as 502 is bonded. At the same time, it needs to match the small depth of cut and high-feeding small-diameter cutter to reduce the cutting force. The process requires repeated processing on the front and back. In the case of high output and high processing efficiency, the clamp is clamped back and forth, and the clamping force is successively reduced by using a jig with a small clamping force such as multiple processes and aerodynamics, based on the empirically estimated deformation amount. Processing until the requirements are met.

Tool:

The face milling cutter selects a milling cutter with a small cutting resistance and can adjust the height of the blade, and a diamond blade is used to prevent burrs.

Side profile milling is more selective, and sharp small diameter milling cutters with less cutting resistance are preferred.

What are the reinforcement methods for aluminum sheets?

 Aluminum plates require different hardness according to their application. But different materials of aluminum plate for hardening treatment is not the same.Generally, it can be divided into two kinds of strengthening methods: processing strengthening and solid solution strengthening.

Processing strengthening, also known as cold work hardening, is to cold-deform the aluminum plate below the crystallization temperature, such as forging, calendering, stretching, etc. This method mainly uses the aluminum plate to increase the internal dislocation density during cold deformation, and mutual Entangled and formed a cellular structure that hinders dislocation motion. The greater the degree of deformation, the more serious the dislocation entanglement, the greater the deformation resistance and the higher the strength.

The second strengthening method of aluminum plate is solid solution strengthening. This method is to add alloying elements in pure aluminum to form an infinite solid solution or a limited solid solution, In this way, not only high strength, but also good plasticity and good working performance under pressure can be obtained. The alloying elements commonly used for solid solution strengthening in general aluminum sheets are elements such as copper, magnesium, manganese, zinc, silicon, and nickel.

After the strengthened aluminum plate, the hardness and other properties will be significantly improved, But not every kind of aluminum plate hardness can be unlimited according to their own material advantages,please pay attention to this point in the procurement!

How to deal with aluminum plate after rusting

 The surface of the aluminum plate is prone to rust due to improper storage or corrosion of corrosive materials. How to properly handle the rusted aluminum plate?

First of all,You just use sandpaper to polish the surface rust gently if the aluminum plate is not very rusty.

The second way is to use professional acid or alkaline syrup to remove the rust on the surface of the aluminum plate, such as hydrochloric acid, acetic acid,alkaline solutions such as calcium hydroxide and sodium hydroxide and so on.

However, the “rust” of the aluminum plate is an aluminum oxide protective film on the surface, which can protect the inside of the aluminum plate from oxidation (“rusting”). Therefore,Do not remove the surface rust layer (oxidation layer) of the aluminum plate when there is no specific requirement.

The advantages of aluminum plate rust:

The rust from aluminum and aluminum will cling to its surface to protect the internal aluminum from rust by preventing oxygen from continuing to drill into the interior of the aluminum.This layer of rust becomes a protective film for aluminum and aluminum products. Scientific name is”Alumina”. Alumina has a characteristic that it is wiped off and a new layer of alumina will soon be formed to continue the protection.

What is the advantage of aluminum skin for heat preservation?

 In recent years, with the demand of industrial development, people’s requirements for insulation materials are getting higher and higher. Aluminum skin stands out among many insulation materials by virtue of its own advantages, and has become the new favorite of the insulation industry. What are the main advantages of aluminum insulation?

1. Light weight and material saving

Aluminum coil (aluminum) is light weight (steel is three times the weight of aluminum). The price per unit of aluminum is relatively high, but the price per square meter is almost equal to the price of steel and aluminum.


2, Easy to construct, high efficiency

The aluminum coil (aluminum skin) is easy to process and form, and the construction is convenient and quick, which reduces the labor intensity for the construction workers.


3, The appearance of praise, good effect

The aluminum coil (aluminum skin) is beautiful, and the aluminum skin is used for heat preservation and exterior decoration. The bright visual effect is very good, and the package is bright and stylish.


4, Resistant to use, cost savings

Aluminum coils (aluminum skin) have a long service life, because aluminum has corrosion resistance and generally does not corrode within 20 years. The service life is 3-5 times that of tin.


5, Good fire resistance

Aluminum coil (aluminum skin) as a metal building material has good fire performance, and fire performance is highly valued by the construction industry.


6, High recovery value

Compared with other insulation materials, the recovery price of scrap aluminum can reach more than 80% of the price of aluminum ingots. Through the recycling of waste aluminum, manufacturers can recover most of the invested capital, which makes the insulation aluminum skin a cost-effective insulation material.

What is the role of oxidation on the surface of aluminum sheets?

 (1) Prevention of corrosion of aluminum sheets: The film obtained by anodic oxidation has good stability in atmosphere after proper sealing treatment. The corrosion resistance of oxide film obtained from sulfuric acid solution oxalic acid solution or chromic acid solution in normal process is very good such as aluminum pot washing machine and so on. Chromic acid oxidation method is especially suitable for aluminum welding and riveting parts.

(2) Protection and decoration of aluminum plate: The oxide film has the characteristics of adsorbing various organic dyes or inorganic pigments on the oxide film with high transparency ,and various bright and bright colors and patterns can be obtained on the oxide film, Many new technologies have emerged in recent years, such as multiple oxidation, coloring patterns, wood pattern, oxidative offset transfer printing, porcelain oxidation, etc., which make the appearance of aluminum more beautiful. This color film is both decorative and anticorrosive, such as lighters, gold pens and handicrafts.

(3) As a hard wear layer of aluminum plate:In sulfuric acid or oxalic acid solution, a thick and hard film layer can be obtained by adjusting the process conditions of anodizing. The selective oil can be stored by using the pore and absorption properties of the film layer, which can be effectively applied to the condition of working under the friction state. At the same time has lubrication and wear-resistant features, such as automobile and tractor engine cylinder, piston and so on.

(4) As an insulating layer of electricity: the oxide film layer of aluminum and its alloy has the characteristics of large electric resistance, and the thickness of the film layer is proportional to the electric resistance. This feature has practical significance as electrical insulation and can be used as a capacitor. The dielectric can also be made of alumina skin as the outer sheath of the cable, and the surface of the cable is used as an insulating layer instead of the plastic foreskin and plastic foreskin. The film has a penetration voltage of 441V when the film thickness is 27.5μm. If the phenolic resin is used as the film hole filling, the withstand voltage can be increased by 2 times. In the oxalic acid solution, when the film thickness is increased, a high-quality insulating layer having a resistance of 200 Ω and a breakdown voltage of 980 V can be obtained. In addition to being used for wires, it can also be used for other electrical appliances.

(5) Undercoating for electroplating and electroplating: Since the oxide film layer has porosity and good adsorption capacity, it has good adhesion with the paint film and the organic film, and can be used as a paint primer layer. A film layer anodized with phosphoric acid can be used as the underlayer for electroplating on aluminum.

(6) For modern buildings: Due to the introduction of aluminum alloy electrolytic coloring process, domestic electrolytic coloring has been increasing in construction aluminum profiles in recent years. It not only has bronze, black and red suitable for architectural color, but also has excellent wear resistance. In general conventional oxidation, it is particularly worth mentioning that the light fastness is very good. It is not decolorized in the atmosphere for more than 20 years, which is incomparable with the oxidation coloring method. Electrolytic coloring of oxidized aluminum profiles can be used not only for building doors and windows, but also for shop counters, shelves, etc.

Aluminum Plate State (H) State Details

 The state of the aluminum plate H state is a common state, which means that the aluminum plate has been subjected to work hardening treatment to improve the strength. The H state is a state in which we often come into contact with and have a large number of subdivisions in the five basic states of the aluminum plate (F, O, H, W, T). The aluminum plate of the same specification and the same grade has different subdivision states. Performance will vary greatly.

H state representation

H is followed by 2-3 digits, indicating the subdivision state of the H state, and the state of the 2 digits is the most common.

The first digit indicates the processing status of the aluminum plate:

H1: Work hardened state, indicating that the aluminum plate has not been heat treated, and the required strength is obtained only by work hardening.

H2: Work hardening and incomplete annealing state, indicating that the aluminum sheet has been work hardened and the strength exceeds the specified requirements. After incomplete annealing, the strength of the aluminum sheet is reduced to the standard strength.

H3: Work hardening and stabilization treatment state, indicating that the aluminum plate is subjected to heat treatment during heat treatment or processing, and the mechanical properties are stable. H3 is only suitable for aluminum sheets that are naturally aged at room temperature.

H4: Work hardening and painting treatment state, indicating that the aluminum plate is subjected to painting treatment after the work hardening, resulting in an incompletely annealed aluminum plate.

The second digit indicates the strength of the aluminum sheet and the degree of work hardening:

Generally, the degree of hardening is divided into 8 grades, 1 low, 8 high, and 9 represents a superhard state which is higher than Hx8 work hardening.

The H18 state indicates that the aluminum plate has only been subjected to work hardening without being heat-treated, and the aluminum plate has a large strength.

The H24 state indicates that the aluminum plate undergoes incomplete annealing after work hardening and the strength is moderate.

The H32 state indicates that the aluminum sheet is subjected to low-temperature annealing after work hardening, and the state is stable, but the strength is lower than that of the aluminum plate of H24.

The meaning of the three-digit status:

H111 state: It is suitable for products that have undergone appropriate amount of work hardening after final annealing, but the degree of work hardening is not as good as H11.

H112 state: Suitable for hot-rolled sheet free-formed, hot-formed products.

H116 state: Applicable to products made of 5-series alloy with magnesium content ≥4.0%. These products have specified mechanical properties and resistance to flaking corrosion.

Advantages of Alloy Aluminum Plate

 Advantages of alloy retaining sheets: Aluminum materials are widely used as exterior walls and roofing in the construction industry. The choice of aluminum as a building material is determined by its economic, practical and aesthetic value. The personality of the building such as airports, high-speed rail stations, sports venues fashion houses is revealed by using aluminum.

1.The weight of the alloy aluminum plate is light: the prefabricated components can be placed in a higher place because of the light weight. The lifting work can be easily done on site without the use of large lifting equipment.

2.Corrosion resistance of alloy aluminum plate: The aluminum material itself has strong corrosion resistance, and this feature is more prominent after pre-fabrication treatment.So the thin aluminum sheet can be used in extreme conditions without costly maintenance.

3. The alloy aluminum plate is sturdy and durable: the aluminum material has incredible strength, and it can be used to build a lightweight but extremely stable structure.

4. The alloy aluminum plate has strong plasticity: the aluminum material has good flexibility and plasticity, and has unlimited design potential. It can be processed in various ways, such as shaping, welding, riveting and cutting into dynamic 3-D geometry.

5. Easy combination of alloy aluminum plates: In addition to the connection methods commonly used in the construction industry, it is also possible to use methods such as welding, riveting, fixing and direct fixing. These methods are simple and easy to carry out, and can quickly and safely complete the connection of building parts.

6. Alloy aluminum plate can be recycled: aluminum roofing and wall panels can usually be recycled in one process, and the recycling process can save 95% energy compared with the primary production process.

7. Excellent aesthetic value of alloy aluminum plate: It can be used for various surface polishing and coloring treatments, such as anodizing or coating, which can meet the architect’s high aesthetic requirements and extend the potential service life of aluminum materials.