Why Do Rebar Coupler Rust

Rebar couplers primarily made from 45# carbon structural steel, are essential components in ensuring the strength and integrity of concrete structures. However, one of the primary concerns with rebar couplers is their tendency to rust when exposed to moisture. Understanding why rebar couplers rust and how to mitigate this risk is vital for any construction project. Key Reasons for Rusting of Rebar Couplers 1. Cutting Fluid Quality during Reprocessing: During the machining process of rebar couplers, a cutting fluid is employed for threading operations. This cutting fluid is typically a water-soluble oil, which possesses some rust prevention and removal qualities. However, if the cutting fluid is of poor quality or has an inadequate concentration, the rebar couplers may become vulnerable to rust, making their storage problematic. 2. Packaging Material Integrity: The packaging for rebar couplers usually consists of woven bags with a membrane liner. If the quality of these packaging ...