Chinese Factory Offers Quality Sand Casting Services for Differential for Case

The differential case is the heart of a vehicle's axle assembly, housing the crucial gear set that allows wheels to rotate at different speeds. Its failure means immediate drivetrain disablement. For global manufacturers seeking reliability and cost-efficiency, a Chinese factory specializing in sand casting services for differential cases presents a strategic sourcing solution, combining proven techniques with modern quality control.

Expert Material Selection for Demanding Applications

Quality begins with the right metal. Reputable Chinese foundries typically use high-strength grades of ductile iron (such as GGG40 or GGG50) or gray iron for these critical components. Ductile iron, with its spherical graphite nodules, is preferred for its exceptional tensile strength, impact resistance, and good machinability. This ensures the differential case can withstand the extreme torsional stresses and shock loads experienced during vehicle operation, from heavy-duty hauling to off-road use.

Advanced Sand Casting Production Process

The sand casting process is ideal for producing robust, complex parts like differential cases. A quality-focused factory employs advanced methods like Furan resin sand molding, which creates molds with higher dimensional accuracy, better surface finish, and greater stability than traditional green sand. The process involves creating a precise pattern, forming the mold cavity, pouring molten metal, and allowing for controlled cooling. Crucially, post-casting, the cases undergo heat treatment (annealing or normalizing) to relieve internal stresses and achieve the required mechanical properties, followed by precision machining on CNC centers to ensure perfect bearing bore dimensions and sealing surface finishes.

Global Applications and Industries Served

These sand-cast differential cases are essential components across the automotive and heavy machinery sectors. They are manufactured as:

• OEM Replacement Parts: For passenger vehicles, trucks, and buses.

• Aftermarket Components: Supplied to the global spare parts market.

• Heavy-Duty Equipment Parts: For agricultural machinery, construction excavators, and mining equipment.

Conclusion: A Partner for Reliability

By leveraging advanced sand casting technology, rigorous material control, and precision machining, a qualified Chinese factory delivers differential cases that meet international performance standards. This offers global clients a dependable supply chain partner capable of producing high-volume, high-integrity castings that ensure drivetrain durability and reliability, all while providing significant value.