Shengyuan Machinery Straightening Rollers Production Process

NANJING, China - March 20, 2025 - PRLog -- Straightening rollers (https://www.tttshining.com/category/straightening-roller/) are key components used to correct the straightness of plates, bars or profiles in metal processing (such as steel rolling, aluminum production, etc.). Their production process must take into account high precision, wear resistance and fatigue resistance. The following are typical production process flows and key links of straightening rollers:

1. Rough machining

– Turning/milling: Machining the blank to a size close to the final size, leaving a finishing allowance (usually 0.5~1mm).

– Drilling/tapping: Machining mounting holes or cooling water holes (some straightening rollers require internal cooling).

2. Heat treatment

– Quenching + tempering: Improve surface hardness (HRC 55~62) and core toughness.

– Induction hardening: For local high hardness requirements, such as regional treatment of the roll neck and roll body.

– Nitriding/carburizing: Surface chemical heat treatment to enhance wear resistance and fatigue resistance.

3. Finishing

– Precision grinding: Use CNC grinders to ensure the roundness (≤0.01mm), cylindricity (≤0.02mm) and surface roughness (Ra≤0.4μm) of the roll surface.

– Dynamic balancing: For high-speed rollers, the dynamic balancing grade must reach G2.5 or higher.

4. Surface treatment

– Hard chrome plating: Thickness 0.05~0.1mm, improve corrosion resistance and wear resistance.
– Thermal spraying: Plasma spraying tungsten carbide (WC-Co) or alumina coating.
– Laser cladding: Repair the worn area or directly prepare the wear-resistant layer, with high bonding strength.

About the supplier

Nanjing Shengyuan Machinery Technology Co., Ltd, is a comprehensive enterprise engaged in the design, development, production and sales of straightening rollers, molds and blades, with its headquarter located in the culturally rich Nanjing, and its factory workshop located in the industrially developed Maanshan. Since its establishment in 2014, the company has always been committed to providing customers with the best quality mechanical technology products and services. More details please visit https://www.tttshining.com