Casting bracket refers to metal support structural components produced through casting technology, widely used in fields such as machinery, automobiles, bridges, etc. The following are its core classifications, process characteristics, and application scenarios:
1、 Material classification
Cast iron bracket
Mainly made of gray cast iron or ductile iron, it has good shock absorption and cost advantages, and is commonly used in load-bearing scenarios such as machine tool platform bases and pipeline support frames. A typical cast iron platform with brackets is designed with adjustable brackets to achieve flexible installation.
Ductile iron brackets (such as QT800-5) are strengthened by composite alloying (copper, molybdenum, etc.) and used in automotive suspension systems.
Cast steel bracket
It is divided into three categories: carbon steel, low-alloy steel, and special steel, with high strength and excellent bearing performance (up to 2200kN), suitable for heavy-duty scenarios such as bridge bearings and mining machinery.
In the early days, sand mold casting was used, but now it has been optimized for electric furnace casting to improve performance, and the surface needs to be sandblasted for rust prevention treatment.
Nonferrous metal bracket
Aluminum alloy: gravity tilt casting technology is used to produce subframe brackets with a yield strength of ≥ 190MPa, which reduces weight by more than 50% compared to traditional cast iron. It is used for lightweighting automotive chassis.
Magnesium alloy: Thin walled instrument panel bracket (wall thickness 2.5mm) manufactured by die-casting process, reducing oxide film defects through channel optimization.
2、 Core processes and technologies
Structural design optimization
Adopting biomimetic design combined with material characteristics, such as the steering knuckle bracket reducing weight by 32% through structural integration and improving fatigue life.
The design of reinforcing ribs in die-casting parts can enhance rigidity, guide the flow of molten metal, and reduce porosity defects, making it suitable for complex structures such as car lamp brackets.
Application of special processes
Die casting: High efficiency production of car lamp brackets, optimized casting system through ProCAST simulation to solve the problem of shrinkage caused by uneven wall thickness.
Modular design: The cast steel bracket adopts a connected stepped pouring system to improve its applicability and casting efficiency.
Quality control
The design of the riser requires precise calculation of the shrinkage distance to prevent shrinkage holes (casting steel shrinkage rate of 3-6%).
The dedicated cooling bracket accelerates heat dissipation and combines air and water cooling to improve production efficiency.