How does a 100 square meter used tube mill perform when processing carbon steel pipes?

Publish Time: 2025-10-21

In modern tube processing, surface quality is a key indicator of product quality and applicability. For carbon steel pipes, whether used in building structures, fluid transportation, or machinery manufacturing, the surface finish directly impacts subsequent coating adhesion, corrosion resistance, and overall appearance. Therefore, many companies pay particular attention to the surface treatment capabilities of tube mills when selecting processing equipment.

1. Equipment Condition Determines Basic Processing Capabilities

The surface treatment performance of a 100 square meter used tube mill depends primarily on its current mechanical condition. After long-term operation, key components such as the grinding head spindle, grinding wheel clamping mechanism, feed system, and guide roller assembly often show varying degrees of wear. Increased spindle runout can lead to unstable grinding wheel rotation, causing vibration and waviness during processing, seriously affecting surface flatness. If the guide rollers lose concentricity due to wear, the tube will wobble as it passes through the grinding area, resulting in uneven grinding and defects such as bamboo knots or spiral patterns. Furthermore, reduced feed system accuracy can lead to inaccurate grinding control, making over- or under-grinding more likely. Therefore, the overall maintenance of the equipment and the degree of wear on its core components directly determine whether it can achieve a uniform and fine surface finish.

2. The Impact of Grinding Wheel Configuration and Process Parameters

Surface finish is not only related to the machine's condition but also highly dependent on the grinding wheel selection and process parameter settings. Modern tube grinding processes typically utilize finer-grit vitrified bonded or CBN grinding wheels to achieve high-precision, low-roughness machining. However, many 100-square-meter used tube mills are shipped with traditional alumina grinding wheels, or users continue to use coarse-grit grinding wheels to reduce costs. This makes it difficult to achieve a desired mirror or matte finish when machining carbon steel tubes. Furthermore, if parameters such as grinding speed, feed rate, and contact pressure are not optimized for the characteristics of carbon steel, surface burns, scratches, or residual scale can easily result. A used machine in good condition but lacking modern grinding wheel technology will still have its upper limit on surface finish, limited by its process configuration.

3. Performance and Limitations in Practical Applications

In actual production, the surface treatment capabilities of 100 square meter used tube mills for carbon steel tubes exhibit distinct differences. For products with less demanding surface roughness requirements, such as structural tubes and bracket tubes, with surface roughness controlled between 3.2μm and 6.3μm, used equipment, after proper maintenance and commissioning, can generally meet these standards. However, when customers demand higher Ra values of 1.6μm or even below 0.8μm, such as for high-end tubes used in precision machinery or requiring electroplating or spray coating, most 100 square meter used tube mills are unable to meet these requirements. The machined surface may exhibit minor chatter marks, grinding wheel marks, or uneven gloss, which are difficult to correct with simple adjustments. Furthermore, used equipment generally has a low level of automation and lacks online detection and feedback control capabilities. This prevents real-time monitoring of surface quality and automatic compensation for deviations, resulting in poor batch consistency.

Overall, the surface finish performance of a 100-square-meter used tube mill when processing carbon steel pipe is highly variable, and its effectiveness is highly dependent on the specific condition of the equipment, maintenance level, and process configuration. For general industrial applications involving carbon steel pipes with less stringent surface quality requirements, a well-maintained 100-square-meter used tube mill can still perform adequately and offer considerable economic value. However, for production of high-value-added products requiring high surface quality, used equipment presents significant shortcomings in terms of precision stability, processing fineness, and consistency.