The pipe bending machine is a versatile tool capable of both pipe bending and jacking operations, making it suitable for pipe installation and repair in factories, warehouses, docks, construction sites, railways, and the automotive industry. It boasts numerous advantages—such as a rational structure, safety, ease of use, reasonable pricing, rapid setup/dismantling, portability, and multi-functionality—allowing it to capture a significant share of the domestic market. During the pipe bending process, it is crucial to avoid excessive damage to the surfaces of the rollers and bending dies, as this can compromise the pipe's performance. To conserve resources and reduce costs, selecting the right tooling is essential. Since the tooling (often referred to as the "drill bit" or forming tool in this context) is the most frequently and rapidly consumed component in pipe bending, the experts at Huameng Machinery provide the following detailed analysis regarding why such rapid wear occurs:

Wear on the rollers and bending dies is primarily caused by sliding friction against the steel pipe. Key factors influencing this wear include bending pressure, the hardness differential between the tooling and the workpiece, and the coefficient of friction between them; surface wear directly impacts both bending quality and processing costs. Research indicates that the mechanism behind surface hardening in 40Cr steel involves the generation of high temperatures followed by rapid cooling, causing the surface microstructure to transform from pearlite to martensite. Following laser hardening and plasma arc quenching treatments on 40Cr steel, wear tests were conducted—involving both dry friction and oil lubrication—against cold-rolled Q235 steel. A comparison of average wear rates reveals that, under oil lubrication, the wear resistance of laser-treated 40Cr steel improves approximately 23-fold, while plasma-treated 40Cr steel improves about 13-fold; the use of lubricating oil significantly reduces wear, thereby enhancing pipe bending quality. Comparative studies involving conventional treatment, plasma arc quenching, and laser treatment on 40Cr surfaces demonstrate that high-energy-density treatments yield higher surface hardness than conventional methods. Consequently, high-energy-density processing enhances the surface wear resistance of the alloy steel, thereby extending the service life of the rollers and bending dies.