Product Description

Product Description:


What is casting?

    Casting is a manufacturing process in which a liquid material is usually poured into a mold, which contains a hollow cavity of the desired shape, and then allowed to solidify. The solidified part is also known as a casting, which is ejected or broken out of the mold to complete the process. Casting materials are usually metals or various time setting materials that cure after mixing 2 or more components together; examples are epoxy, concrete, plaster and clay. Casting is most often used for making complex shapes that would be otherwise difficult or uneconomical to make by other methods.Heavy equipment like machine tool beds,ship’s propeller etc. can be cast easily in the required size rather than fabricating them by joining several small pieces.

 

Product Specifications:
 
Material: Aluminum, A380, A356, ADC12, AlSi10Mg, 104, 102 etc.
Dimension: According to the drawing or sample
Standard: DIN GB ISO JIS BA ANSI
Casting equipment: 80T/160T/250T/300T/500Tcasting machine,Sand blasting machine,5T electri stove,Metallographic detector,Independent mould manufacturing
Production Process: Polish/Sand Blast/EDM/Milling/Texture/Grind/Pre-Treatment/Quenching/Lathe/Wire Cut/Annealing/Temper etc.
Equipment of Casting: 1. High pressure die casting machining:125T/180T/250T/280T/500T/800T/1250T

2. Gravity casting machine: 5 production lines

3. Low pressure die casting machining: 1 production line

4. Sand casting machine: 6 production lines

5. Degassing equipment and opportunities to refine the material

6. Machining: 5Sets CNC Machines;3 sets Milling machines; 3 setsTurning machines; 10 sets drill and tap machines

Casting (metalworking)
    In metalworking, metal is heated until it becomes liquid and is then poured into a mold. The mold is a hollow cavity that includes the desired shape, but the mold also includes runners and risers that enable the metal to fill the mold. The mold and the metal are then cooled until the metal solidifies. The solidified part (the casting) is then recovered from the mold. Subsequent operations remove excess material caused by the casting process (such as the runners and risers).

Fettling can add significantly to the cost of the resulting product, and designers of molds seek to minimize it through the shape of the mold, the material being cast, and sometimes by including decorative elements.

Casting process simulation uses numerical methods to calculate cast component quality considering mold filling, solidification and cooling, and provides a quantitative prediction of casting mechanical properties, thermal stresses and distortion. Simulation accurately describes a cast component’s quality up-front before production starts. The casting rigging can be designed with respect to the required component properties. This has benefits beyond a reduction in pre-production sampling, as the precise layout of the complete casting system also leads to energy, material, and tooling savings.

The software supports the user in component design, the determination of melting practice and casting methoding through to pattern and mold making, heat treatment, and finishing. This saves costs along the entire casting manufacturing route.

  Typical Feasible
Shapes: Thin-walled: Complex
Solid: Cylindrical
Solid: Cubic
Solid: Complex
Flat
Thin-walled: Cylindrical
Thin-walled: Cubic
Part size: Weight: 1 oz – 450 ton
Materials: Metals
Alloy Steel
Carbon Steel
Cast Iron
Stainless Steel
Aluminum
Copper
Magnesium
Nickel
Lead
Tin
Titanium
Zinc
Surface finish – Ra: 300 – 600 μin 125 – 2000 μin
Tolerance: ± 0.03 in. ± 0.015 in.
Max wall thickness: 0.125 – 5 in.  0.09 – 40 in.
Advantages: Can produce very large parts
Can form complex shapes
Many material options
Low tooling and equipment cost
Scrap can be recycled
Short lead time possible
Disadvantages: Poor material strength
High porosity possible
Poor surface finish and tolerance
Seondary machining often required
Low production rate
High labor cost
Applications: Engine blocks and manifolds, machine bases, gears, pulleys

Why choices us?
 

  • In China, we have more than 13 years of experience in processing foreign companies for foreign companies.
  • China manufacturer in HangZhou,not trade company
  • Competitive price and nice service
  • ISO/SGS passed
  • Application: Automotive,medical device, electronics, toy, furniture, industrial etc.

Our Products:

1. auto parts, classic car parts

2. machine parts, pump body housing, engine parts, cylinders, pistons, transmission housing.

3. cookware parts, kitchen ware parts.

4. medical equipment parts, housing, instrument housing, I beam, housing…etc. 

5. Bicycle and motocycle parts, sport equipment parts, housings, covers, heat sinks.

Our Policy:

Innovation and developing in Technique

High level of expertise

Outstanding quality

On-time delivery to customer needs

PACKAGE:

Transport:

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Type: Clay Wet Sand
Casting Method: Vacuum Aspirated Casting
Sand Core Type: Clay Sand Core
Application: Machinery Parts
Machining: CNC Machining
Material: Steel
Customization:
Available

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cast aluminium

Can cast aluminium be welded, and if so, what techniques are used?

Yes, cast aluminium can be welded, but it requires specific techniques and considerations due to the unique characteristics of the material. Here’s a detailed explanation:

Cast aluminium is a commonly used material in various industries due to its lightweight, high strength-to-weight ratio, and good corrosion resistance. Welding cast aluminium can be challenging because it has different properties compared to wrought aluminium, primarily due to its microstructure and the presence of impurities and inclusions.

When welding cast aluminium, several important factors should be considered:

  • Preparation and Cleaning:
  • Prior to welding, thorough cleaning of the cast aluminium surfaces is crucial. Any contaminants, such as oils, dirt, or oxide layers, should be removed to ensure proper fusion and minimize the risk of defects in the weld.

  • Preheating:
  • Preheating the cast aluminium part can help reduce the thermal stresses and minimize the potential for cracking during welding. The preheating temperature and duration depend on factors such as the alloy type, part thickness, and welding method.

  • Welding Techniques:
  • Various welding techniques can be used for cast aluminium, including:

    • Tungsten Inert Gas (TIG) Welding: TIG welding is commonly used for welding cast aluminium. It involves the use of a non-consumable tungsten electrode to create an electric arc, and a shielding gas (typically argon) protects the weld area from atmospheric contamination. TIG welding allows precise control of the heat input and produces high-quality welds.
    • Metal Inert Gas (MIG) Welding: MIG welding, also known as Gas Metal Arc Welding (GMAW), can be used for cast aluminium. It utilizes a consumable electrode wire and an inert gas shield to protect the weld pool. MIG welding is faster than TIG welding but may require more expertise to achieve good results with cast aluminium.
    • Fusion Welding: In some cases, fusion welding techniques like oxyfuel gas welding or plasma arc welding may be suitable for specific cast aluminium applications. These processes involve the localized melting of the base metal to create the weld joint.
  • Filler Material:
  • The choice of filler material for welding cast aluminium is crucial. Generally, an aluminium-silicon alloy filler wire, such as 4043 or 5356, is used. These alloys have a similar composition to most cast aluminium grades and provide good fusion and mechanical properties.

  • Post-Weld Heat Treatment:
  • After welding, post-weld heat treatment (PWHT) may be necessary to relieve residual stresses and improve the mechanical properties of the weld. The specific PWHT requirements depend on factors such as the alloy composition, part thickness, and application.

  • Weld Quality and Testing:
  • Proper inspection and testing of the welds are essential to ensure their quality and integrity. Non-destructive testing methods, such as visual inspection, dye penetrant testing, or radiographic examination, can be employed to detect any weld defects or discontinuities.

It is important to note that welding cast aluminium can be more challenging compared to welding wrought aluminium due to the potential for casting defects, such as porosity or inclusions, which can affect the weld integrity. Therefore, it is advisable to work with experienced welders who have expertise in welding cast aluminium and understand the specific challenges associated with the material.

In summary, cast aluminium can be welded using techniques such as TIG welding, MIG welding, or fusion welding, provided proper preparation, cleaning, preheating, filler material selection, and post-weld heat treatment are considered. By following appropriate welding procedures and conducting thorough quality inspections, reliable and structurally sound welds can be achieved in cast aluminium parts.

cast aluminium

What types of finishes can be applied to cast aluminium?

Cast aluminium can be finished with various types of coatings and finishes to enhance its appearance, protect it from corrosion, and provide additional durability. Here are some common types of finishes that can be applied to cast aluminium:

  • Paint:
  • Painting is a popular finishing option for cast aluminium. It allows for a wide range of color choices and can be used to achieve different textures and finishes, such as matte, glossy, or metallic. Paint provides both aesthetic appeal and a protective layer to shield the aluminium from environmental factors.

  • Powder Coating:
  • Powder coating is a dry finishing process where a fine powder is electrostatically applied to the cast aluminium surface. The powder adheres to the metal and is then cured under heat, forming a durable, uniform, and smooth coating. Powder coating offers excellent corrosion resistance, impact resistance, and color options, making it a popular choice for outdoor furniture, automotive parts, and architectural applications.

  • Anodizing:
  • Anodizing is an electrochemical process that creates a controlled oxide layer on the surface of aluminium. It enhances the natural corrosion resistance of aluminium and provides a more durable finish. Anodized finishes can range from clear or natural to various colors, depending on the type of anodizing process used. Anodized cast aluminium is commonly used in architectural applications, electronics, and consumer goods.

  • Polishing:
  • Polishing is a mechanical finishing process that creates a smooth, reflective surface on cast aluminium. It involves using abrasives and polishing compounds to remove imperfections and scratches, resulting in a shiny and lustrous finish. Polished aluminium can be left untreated for a bright, metallic appearance, or it can be further coated or protected with clear lacquer or wax.

  • Brushed or Satin Finish:
  • A brushed or satin finish is achieved by brushing the surface of cast aluminium with abrasive materials or using mechanical techniques. This creates a textured, matte finish with visible brush marks. Brushed or satin finishes are commonly used in architectural applications, decorative elements, and furniture.

  • Antique or Patina Finish:
  • An antique or patina finish is designed to give cast aluminium a weathered or aged appearance. This finish is achieved through chemical treatments or special coatings that create an oxidized or tarnished effect on the surface. Antique finishes are often used in decorative pieces, art, and furniture to add character and vintage appeal.

The choice of finish for cast aluminium depends on the desired aesthetic, functional requirements, and the intended application of the product. Different finishes offer varying levels of protection, durability, and visual effects, allowing for customization and versatility in the use of cast aluminium.

cast aluminium

How does cast aluminium differ from wrought aluminium?

Cast aluminium and wrought aluminium are two different forms of aluminum that differ in their manufacturing processes and properties. Here’s a detailed explanation:

Manufacturing Process:

  • Cast Aluminium:
  • Cast aluminium is produced by pouring molten aluminium into a mold or die, allowing it to solidify and take the shape of the mold. This process is called casting. Cast aluminium components are typically created in large batches using specialized casting techniques such as sand casting, die casting, or investment casting.

  • Wrought Aluminium:
  • Wrought aluminium is produced through a series of mechanical processes, typically starting with the casting of ingots or billets. The ingots or billets are then subjected to various shaping processes, such as rolling, extrusion, forging, or drawing. These processes deform the aluminium material and shape it into the desired form, such as sheets, plates, bars, or profiles.

Mechanical Properties:

  • Cast Aluminium:
  • Cast aluminium has a coarse-grained microstructure due to the rapid solidification process during casting. This microstructure can result in lower mechanical strength and reduced ductility compared to wrought aluminium. However, cast aluminium can still exhibit sufficient strength and rigidity for many applications.

  • Wrought Aluminium:
  • Wrought aluminium has a refined and more uniform microstructure due to the mechanical processing it undergoes. This results in improved mechanical properties, including higher strength, better ductility, and enhanced toughness compared to cast aluminium. Wrought aluminium is often preferred for applications that require superior mechanical performance.

<strong.Surface Finish:

  • Cast Aluminium:
  • Cast aluminium surfaces typically have a textured or slightly rough appearance due to the nature of the casting process. The surface finish of cast aluminium can vary depending on the casting method used and the quality of the mold. Additional machining or surface treatments may be required to achieve a smoother or more polished finish.

  • Wrought Aluminium:
  • Wrought aluminium surfaces can achieve a smoother and more refined finish compared to cast aluminium. The mechanical processing involved in the production of wrought aluminium helps create a more uniform surface texture. Wrought aluminium can be further treated or finished to achieve various surface qualities, such as brushed, polished, or anodized finishes.

Application Suitability:

  • Cast Aluminium:
  • Cast aluminium is commonly used for applications that prioritize ease of manufacturing, complex shapes, or cost-efficiency. It is often found in automotive components, household appliances, decorative items, and low-stress structural applications.

  • Wrought Aluminium:
  • Wrought aluminium is preferred for applications that require superior mechanical properties, tight tolerances, or specific surface finishes. It is commonly used in aerospace components, high-strength structures, precision parts, and applications where formability and strength are critical.

It’s important to note that the choice between cast aluminium and wrought aluminium depends on the specific requirements of the application, considering factors such as mechanical performance, surface finish, complexity of the design, and cost considerations.

China high quality High Quality and Precision Aluminum CHINAMFG  China high quality High Quality and Precision Aluminum CHINAMFG
editor by Dream 2024-05-09