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FAQ

I don't like purchasing deoderants that contain aluminum sulfate due to the fact that a build-up of aluminum may cause Alzheimer's (my grandfather has it). So, I purchased an all natural deoderant only to later look more closely at the labely and see POTASSIUM ALUM....hmmm, alum versus aluminum? Supposedly alum cannot be absorbed by the skin so it's safe....any proof?

Alum refers to a specific chemical of the form ABx(SO4)y ? zH2O where A and B are metals of some type and sometime Aa(SO4)b?Bx(SO4)y?zH2O called mixed sulfate alums' ------------------------- Aluminum sulfate is: Al2(SO4)3 Potassium alum has the formula KAl(SO4)2 ? 12H2O so the two are quite different compounds. According to the MSDS this compound is non-hazardous ref: msds.chem.ox.ac.uk/AL/aluminium_p...

Aluminum sheets have good weldability due to their high thermal conductivity and low melting point.

Aluminum sheets are indeed suitable for usage in harsh chemical environments. Their remarkable resistance to numerous chemicals, including acids, alkalis, and organic solvents, is noteworthy. The formation of a protective oxide layer on the surface of aluminum aids in preventing corrosion. Moreover, aluminum's lightweight nature, durability, and cost-effectiveness have contributed to its widespread use in various industrial applications within harsh chemical environments. Nevertheless, it is essential to acknowledge that the appropriateness of aluminum sheets in particular chemical environments may also be influenced by factors such as temperature, concentration, and duration of exposure to the chemicals. To ensure the proper selection of materials for a given chemical environment, it is always advisable to consult experts or refer to specific chemical compatibility charts.

Yes, aluminum sheets can be bent or formed without cracking or breaking, as long as proper techniques such as annealing and using appropriate tooling are employed.

There are several different forming methods that can be used to shape aluminum sheets. These methods include: 1. Roll Forming: This process involves passing the aluminum sheets through a series of rollers that gradually shape the material into the desired form. Roll forming is often used to create long, continuous shapes such as channels or rails. 2. Press Forming: Press forming uses hydraulic or mechanical presses to apply force to the aluminum sheet, creating the desired shape. This method is commonly used for forming complex shapes with tight tolerances. 3. Stretch Forming: In stretch forming, the aluminum sheet is clamped at its edges and then stretched over a die, causing the material to conform to the shape of the die. This method is often used to produce curved or contoured parts. 4. Deep Drawing: Deep drawing involves placing a blank of aluminum sheet into a die and then using a punch to force the material into the die cavity, creating a hollow shape. This method is commonly used to produce cylindrical or box-shaped parts. 5. Hydroforming: Hydroforming uses hydraulic pressure to shape the aluminum sheet against a die. This method is particularly useful for producing complex, intricate shapes with smooth surfaces. 6. Incremental Sheet Forming: In incremental sheet forming, a CNC machine moves a small tool over the surface of the aluminum sheet, gradually shaping it by applying localized pressure. This method is often used for prototyping or small-scale production. These forming methods offer different advantages and are suitable for different applications. The choice of method depends on factors such as the desired shape, complexity, and volume of production.

Some of the different types of surface treatments for aluminum sheets in the marine industry include anodizing, powder coating, chromate conversion coating, and painting.

Yes, aluminum sheets can be laminated. Lamination is a process of bonding multiple layers together to create a composite material with enhanced properties. In the case of aluminum sheets, they can be laminated with other materials such as plastics, adhesives, or even other metals. This process can improve the strength, durability, and thermal or electrical conductivity of the aluminum sheets. Laminated aluminum sheets are commonly used in various industries, including construction, automotive, aerospace, and packaging, where the combination of different materials provides the desired characteristics for specific applications.

The surface cleanliness of aluminum sheet has a significant impact on its adhesion properties. The presence of contaminants, such as dirt, grease, or oxide layers, on the surface can hinder the ability of adhesives to bond effectively with the aluminum sheet. A clean and properly prepared surface is essential for achieving strong adhesive bonds. When the aluminum sheet is free from contaminants, the adhesive can spread evenly and make intimate contact with the surface, resulting in a stronger bond. On the other hand, if the surface is not clean, the adhesive may not be able to adhere properly, leading to weak or unreliable bonds. In addition to contaminants, the presence of oxide layers on the aluminum surface can also affect adhesion properties. Aluminum naturally forms an oxide layer when exposed to air, which can hinder adhesive bonding. This oxide layer needs to be removed or modified to ensure good adhesion. Surface preparation methods like cleaning, degreasing, and treating with chemical solutions can help remove or modify the oxide layer, allowing for better adhesion. Various surface cleaning techniques can be employed to improve the cleanliness and adhesion properties of aluminum sheets. These can include mechanical cleaning methods such as abrasive cleaning or sanding, solvent cleaning, acid etching, or even plasma cleaning. Each method is selected based on the type and extent of contamination present on the surface. In summary, the surface cleanliness of aluminum sheet directly affects its adhesion properties. A clean and properly prepared surface ensures better adhesion by allowing the adhesive to make intimate contact with the aluminum sheet. Therefore, it is crucial to consider and address surface cleanliness when attempting to achieve strong and reliable adhesive bonds with aluminum sheets.