正确研磨的说明
提升纱线品质是当今纺纱企业构筑市场竞争优势的核心环节。Accotex胶辊作为经设备制造商认证的标准胶辊，全面适用于传统纺纱机与紧密纺纱机。要优化纱线关键指标（条干均匀度、细节、粗节），必须采用高品质软质胶辊——而此类胶辊的性能表现，很大程度上取决于其表面是否经过妥善处理。
皮辊的磨砺
为确保胶辊获得优异性能，其表面粗糙度必须控制在精准范围
在特定工艺场景下，可采用紫外线光照处理作为胶辊表面处理的可行方案。
无论磨床设备类型如何，我们建议确保遵循以下要点：
- 砂轮应得到规范的修整与维护。
- 每磨砺1500只皮辊后，应使用金刚石工具修整砂轮一次。
- 所有新胶辊压套后，必须在首道磨砺工序中进行统一外径的初磨；随后方可精磨至公称尺寸。
随后，应使用中号砂纸对砂轮表面进行细腻抛光，以避免出现自上而下的磨床划痕。
新供应的胶辊将带有规定的壁厚公差
所有新胶辊压套后，必须在首道磨砺工序中进行统一外径的初磨；随后方可精磨至公称尺寸。
磨砺后的胶辊表面必须洁净，无残留磨屑与磨床划痕。
无论磨床设备类型如何，我们建议确保遵循以下要点：
磨砺后的胶辊具有合适的表面粗糙度（Ra值）。
请使用经过校准的测量设备。
检查设备：
- 根据ISO 1994标准：
- 截止波长：3x0.8 mm 或 5x0.8 mm
- 评定指标：Ra值
当表面处于常温状态时，需沿胶辊圆周方向均匀选取三个测量点获取独立读数，最终取其算术平均值。
Schleifanweisung
- With each grinding it is necessary to remove at least 0.3 mm in diameter to get a fresh rubber layer on the cot surface. If less material is removed surface cracks can occur after several grinding cycles.
- The freshly buffed cots should relax in the spinning climate for approx. 24h before they will be used.
研磨時間
研磨速度越快越好，研磨時間越長越好。
Grinding Machine: Wide-Stone Type
Semi automatic or fully automatic grinding machine:
- Stone grain 80 or 120
- Stone porosity 14 or 10
- Cot diameter to be reduced by 0.3 mm for each grinding
The grinding results that should be achieved are:
| Type | Removel (OD) | Targeted roughness [µRa] (cold surface) |
| Ring spinning | 0.3 mm | 0.8 – 1.0 |
| Air-Jet spinning | 0.3 mm | 0.6 – 0.8 |
Grinding intervals:
| Hardness | Type | Recommend grinding interval |
| Soft cots | Ring spinning | 1 - 3 months |
| Medium cots | Ring spinning | 1 - 3 months |
| Hard cots | Ring spinning | 4 - 5 months |
| Soft cots | Air-Jet spinning | 7 - 15 days |
| Hard cots | Air-Jet spinning | 4 - 5 months |
Precise grinding
1. Measure the outer diameter of the cot before grinding
2. We recommend starting with the following parameters:
- For grinding stones with a grain of 120 and a porosity of 10:
- Total contact time* is used 8s for soft and medium soft cots
- 3s grinding time5s polishing time
- We recommend to chose the feed 1s/ 0.1 mm material removal
- For grinding stones with a grain of 80 and a porosity of 14:
- Total contact time* 10s for soft and medium soft cots
- 3s grinding time
- 7s polishing time
- We recommend to chose the feed 1s/ 0,1 mm material removal
*Total contact time=grinding time+polishing time
Measuring after grinding
3. Measure the outer diameter of the cot after grinding; it should be
0.3 mm smaller now, measured on the cold surface
In the case of automatic measurement, check the measured values
regularly with a caliper gauge. We recommend the option "grinding
to size”.
4. If 0.3 mm diameter reduction has been achieved, please wait for the
cot surface to cool down and measure the Ra-value of the surface.
- The total contact time might have to be adjusted, in case a different stone type or stone condition is used
- In this case, please proceed as follows:
- If the surface is smoother than Ra 0.8 μm, shorten the total contact time by reducing just the polishing time
- If the surface is rougher than Ra 1.0 μm, lengthen the total contact time by extending just the polishing time.
Grinding Machine: Narrow-Stone Type
Semi automatic or fully automatic grinding machine:
- Stone grain 80
- Stone porosity 14
- Cot diameter to be reduced by 0.3 mm for each grinding
The grinding results that should be achieved are:
| Type | Removel (OD) | Targeted roughness [µRa] (cold surface) |
| Ring spinning | 0.3 mm | 0.8 – 1.0 |
| Air-Jet spinning | 0.3 mm | 0.6 – 0.8 |
Grinding intervals:
| Hardness | Type | Recommend grinding interval |
| Soft cots | Ring spinning | 1 - 3 months |
| Medium cots | Ring spinning | 1 - 3 months |
| Hard cots | Ring spinning | 4 - 5 months |
| Soft cots | Air-Jet spinning | 7 - 15 days |
| Hard cots | Air-Jet spinning | 4 - 5 months |
Precise grinding
1. Measure the outer diameter of the cot before grinding
2. We recommend starting with the following parameters:
For grinding stones with a grain of 120 and a porosity of 10:
- 2 passes for soft and medium soft cots
- 3 passes for hard cots
Measuring after grinding
3. Measure the outer diameter of the cot after grinding; it should be
0.3 mm smaller now, measured on the cold surface
4. If 0.3 mm diameter reduction has been achieved, please wait for the
cot surface to cool down and measure the Ra-value of the surface.
- The total contact time might have to be adjusted, in case a different stone type or stone condition is been used
- In this case, please proceed as follows:
- If the surface is smoother than Ra 0.8 μm, shorten the total contact time by reducing just the polishing time
- If the surface is rougher than Ra 1.0 μm, lengthen the total contact time by extending just the polishing time.
如需更多資訊，請聯絡 Accotex 團隊。