Production process and product advantages of C94300 copper bushing:

Production process

Casting process:

C94300 copper bushing mainly adopts centrifugal casting and sand casting process. Centrifugal casting makes the alloy evenly distributed through high-speed rotating molds, forming a high-density structure and reducing pores and loose defects. Sand casting is suitable for the production of bushings with complex shapes. Attention should be paid to the accuracy of the box during casting and the shrinkage correction after the casting cools. Some processes are also combined with metal mold casting to further improve the mechanical properties of the product.

Processing process:

Pretreatment: including degreasing, shot blasting (removing the surface oxide layer) and phosphating (part of the outsourcing process) to improve the surface quality.

Molding and post-processing: The semi-finished skeleton is formed by machining (turning, drilling, etc.), followed by vulcanization (enhancing wear resistance), trimming and packaging.

Special treatment: Some products use electrolytic copper raw materials combined with high-temperature sintering process to optimize the internal organization.

Product Advantages

Wear resistance and strength:

C94300 contains high lead (22-27%) and tin (4.5-6%), forming a hard matrix with uniform distribution of soft lead phase, which significantly improves wear resistance. Its tensile strength is ≥165 MPa, and its elongation is ≥10%, which can withstand heavy loads and impact loads.

2. Corrosion resistance:

It exhibits excellent corrosion resistance in fresh water, sea water and humid environments, and is suitable for harsh environments such as ships and water conservancy equipment.

Self-lubrication and low maintenance:

The high lead content gives the material self-lubricating properties, which can reduce friction and wear even without external lubrication conditions, and reduce maintenance costs.

High temperature resistance:

It has good thermal conductivity, can work stably under high temperature conditions (such as hydraulic cylinders, crushers), and has strong resistance to thermal deformation.

Process adaptability:

It supports a variety of processes such as centrifugal casting and sand casting to meet different size and precision requirements, especially suitable for customized production of large bushings such as mining machinery and engineering equipment.