Characteristics Of Rolled Cylinder Tubes

2025-09-11

Rolled cylinder tubes are manufactured through a chipless cold-working process known as roller burnishing. This method uses high-pressure hardened rollers or balls to plastically deform the inner surface of the tube, resulting in significant improvements in performance and durability. The characteristics of rolled cylinder tubes can be categorized into advantages and limitations: 1. Key advantages Exceptional surface quality Ultra-low surface roughness: Achieves a mirror-like finish with surface roughness typically ranging from Ra 0.1 to 0.4 μm, and can reach as low as Ra 0.05 μm under optimal conditions. Smooth and uniform surface: Eliminates tool marks and micro-irregularities from pre-machining through plastic deformation, resulting in a consistent and smooth surface. Enhanced mechanical properties Surface hardening: Cold working induces strain hardening, increasing surface hardness by 15%–30%. Compressive residual stress: Introduces a layer of uniform compressive residual stress on the surface, significantly improving fatigue strength and resistance to stress corrosion cracking, thereby extending service life. Improved wear resistance: The combination of increased hardness and smooth surface reduces friction and enhances wear resistance. High dimensional and geometrical accu...

The Machining Principle Of Honed Cylinder Tube

2025-09-11

The machining principle of honed cylinder tubes is based on micro-cutting achieved through a combined rotational and reciprocating motion of the honing tool. This process utilizes abrasive stones mounted on a honing head to interact with the inner surface of the workpiece, forming a cross-hatched pattern that improves geometric accuracy and reduces surface roughness. The following sections detail the core principles and mechanisms involved: I. Basic Motion Mechanism The honing head drives abrasive stones (honing sticks) to perform two simultaneous motions: Rotational Motion: The honing head rotates around its axis, generating circumferential cutting traces. Reciprocating Motion: The honing head moves axially back and forth, producing linear cutting traces. Combined Effect: The superposition of these motions creates a cross-hatched pattern with a typical angle of 30°–60° (adjustable based on requirements). This pattern enhances oil retention, reduces friction, and improves wear resistance. II. Material Removal Mechanism Micro-Cutting Action: Abrasive grains remove material at a micron-level depth, ensuring minimal heat generation and avoiding thermal damage to the workpiece. The large contact area between the abrasive stones and the bore wall results in low unit pressure (typ...