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Elevator 8 × 25Fi-IWRC
A company specializing in the production, research and development, and sales of steel wire ropes. It develops and produces supporting services for elevator rope manufacturers, focusing on 6 * 19 steel wire ropes. At the
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电梯专用 8×25Fi-IWRC 钢丝绳是在通用 8×25Fi-IWRC 基础上，针对电梯曳引、随行、补偿等工况优化的低旋转、高耐磨、抗疲劳特种钢丝绳，符合 GB 8903-2018《电梯用钢丝绳》 标准，适用于乘客电梯、载货电梯的曳引系统，尤其适配中高速电梯的重载、高频次启停作业需求。
一、型号含义拆解（电梯工况专属优化）
型号部分 含义说明 8 外层8 个工作股，相比 6 股结构截面更圆整、受力更均匀，抗旋转性能提升 30% 以上，可有效避免电梯曳引过程中绳体扭转、轿厢晃动，保障运行平稳性 ×25Fi K 型压实填充式瓦林吞股（Fi=Filled 填充结构），每股 25 根钢丝采用面接触压实工艺，股内间隙极小，电梯启停冲击下钢丝不易产生微动磨损；填充结构提升绳体与曳引轮的贴合度，降低打滑风险 -IWRC 独立钢丝绳芯（通常为 7×19 结构），经电梯工况专项强化，径向支撑力更强，能承受曳引轮长期挤压与弯曲疲劳，抗蠕变性能优于普通钢芯，避免电梯运行过程中绳体伸长导致的平层精度偏差 二、电梯专用核心技术参数
参数项 详细说明 结构组成 8 个 K 型压实填充式瓦林吞外层股 + 独立钢丝绳芯；采用同向捻 + 交叉捻复合工艺，外层股右捻、绳芯左捻，旋转扭矩≤0.5 N・m/100m，满足电梯低旋转要求 钢丝材质 专用电梯钢丝绳用高碳钢（#82B 特级），抗拉强度波动≤50MPa，屈强比≥0.85，耐疲劳次数≥2×10⁶次（弯曲半径 D=10d），远超通用钢丝绳标准 表面处理 1. 镀锌磷化复合处理：先磷化（提升润滑脂吸附性）后热镀锌（镀层厚 35~50μm），防锈、耐磨性能最优，适配潮湿机房或户外电梯2. 光面浸专用电梯润滑脂：表面涂覆高粘附性曳引脂，降低与曳引轮的摩擦系数（0.10~0.12），减少磨损与噪音3. 电镀锌：仅适用于干燥无尘机房的低速电梯 直径范围 常见 8~16mm（电梯曳引绳主流规格），适配主流曳引轮槽型（U 型槽、半圆槽） 公称抗拉强度 1770MPa（电梯专用优选等级），兼顾强度与韧性，避免钢丝脆断 最小破断拉力系数 ≥0.42（GB 8903-2018 强制要求），比通用型号高 5%~8%，保障电梯超载工况下的安全冗余 弹性模量 ≥190 GPa，蠕变伸长率≤0.1%（额定载荷下运行 10⁴次），确保电梯平层精度≤±3mm 三、典型性能表（1770MPa 镀锌磷化 + 电梯专用脂）
公称直径（mm） 参考重量（kg/100m） 最小破断拉力（kN） 适配电梯类型 8 32 28.5 小型载货电梯、杂物电梯 10 50 44.5 乘客电梯（8 人以下） 12 72 63.0 中大型乘客电梯、载货电梯 16 128 112.0 重载载货电梯、观光电梯 四、电梯工况核心特性
- 低旋转高平稳8 股对称结构 + 复合捻向设计，彻底解决电梯启停时绳体扭转导致的轿厢晃动问题，运行噪音≤55dB（额定速度 1.75m/s），提升乘坐舒适度。
- 抗疲劳耐磨损面接触压实工艺消除股内钢丝间隙，电梯高频次弯曲（曳引轮 - 导向轮往复）时，钢丝无微动摩擦，使用寿命比普通电梯钢丝绳延长 50%~80%。
- 高安全冗余最小破断拉力系数远超国标要求，配套电梯安全系数≥12（GB 10058-2009 强制要求），超载 125% 工况下仍能稳定运行。
- 精准平层独立钢芯抗蠕变性能优异，长期运行后绳体伸长量极小，无需频繁调整轿厢平层位置，降低维保工作量。
五、电梯专用选型与维保要点
- 选型匹配要求
- 绳径与曳引轮直径比：d/D ≤ 1/40（GB 7588-2020 强制要求），避免绳体过度弯曲疲劳
- 槽型匹配：半圆槽适配 8~10mm 绳径，U 型槽适配 12~16mm 绳径，提升曳引力
- 严禁用通用 8×25Fi-IWRC 替代电梯专用型号，两者疲劳性能、抗旋转性能差异显著
- 维保关键事项
- 润滑管理：定期补充电梯专用曳引脂，禁止使用普通钢丝绳润滑脂（易打滑、腐蚀绳芯）；脂层厚度保持 0.2~0.3mm
- 损伤判定：出现以下情况立即报废（GB 8903-2018）：① 单股断丝数≥3 根；② 绳径磨损≥7%；③ 钢丝绳出现明显锈蚀、变形
- 更换周期：建议每 5 年强制更换（或运行里程达 50 万 km），即使外观无明显损伤也需更换，避免疲劳断裂风险
- 存放要求：原包装存放于干燥通风机房，避免与酸碱、油污接触；安装时严禁摔打、弯折绳体
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common problem
Q
What kind of lubricant can prevent wire rope damage?
A
First, the smooth oil has good fluidity and soaking ability, allowing it to quickly enter the inside of the rope and the rope core when the wire rope is smooth pretreated, and can play a role in preventing bacteria from multiplying inside the rope core fibers.
Second, the lubricating oil adhered to the wire rope will not be easily wiped off, and the smoothing effect will not be affected within the specified temperature range. In addition, the lubricating oil with adhesive function can also prevent skid, which provides assistance for the friction of the elevator wire rope.
Third, it has a high oil film strength, which can resist the extremely high pressure between the steel wires in contact with each other under extremely heavy load, and can also resist decomposition and transformation.
Fourth, smooth oil has high cohesion, which can avoid the dripping of smooth oil, centrifugal loss when there is no exercise, and avoid grease waste and pollution to other equipment.
Fifth, it does not contain ingredients that can cause corrosion and rust in the steel wire rope, and the effect of anti-corrosion and anti-rust is better.
Sixth, its self-correcting ability is strong. When the wire rope is used, it constantly twists and turns, which will cause the surface oil film to continuously knead and expand. This requires a soft and high-temperature oil film to maintain the rope body from cracking.
Second, the lubricating oil adhered to the wire rope will not be easily wiped off, and the smoothing effect will not be affected within the specified temperature range. In addition, the lubricating oil with adhesive function can also prevent skid, which provides assistance for the friction of the elevator wire rope.
Third, it has a high oil film strength, which can resist the extremely high pressure between the steel wires in contact with each other under extremely heavy load, and can also resist decomposition and transformation.
Fourth, smooth oil has high cohesion, which can avoid the dripping of smooth oil, centrifugal loss when there is no exercise, and avoid grease waste and pollution to other equipment.
Fifth, it does not contain ingredients that can cause corrosion and rust in the steel wire rope, and the effect of anti-corrosion and anti-rust is better.
Sixth, its self-correcting ability is strong. When the wire rope is used, it constantly twists and turns, which will cause the surface oil film to continuously knead and expand. This requires a soft and high-temperature oil film to maintain the rope body from cracking.
Q
What are the classifications of wire ropes?
A
1, electric hoist wire rope: 6 * 37 + FC- 11/13/15/17.5
2, tower crane wire rope and multi-strand non-rotating wire rope: 6 * 19 + FC- 12/12.5, 6 * 37-13/14, 6 * 29FI + FC- 12/12.5, 4v39s + 5FC- 12/13/14, 35W * 7-12/13/14
3, car crane does not rotate wire rope: 4V39S + 5FC- 10/12/13/14/16/17, 35W * 7-10/12/13/14/15/16/17/18/20/22
4, pile driver flat wire rope: K6K36WS + IWR-/17.5/24/26/28/30/32/34/36/40/42/46
5, rotary excavator flat wire rope: 35W * K7- 24/26/28/30/32/36/40
6, dock crane wire rope: 6 * 36WS + IWR- 17.5/19 5/21.5/24/26
7, mine wire rope 6 * 19 + FC- 12.5/14/15.5/17/18.5/21 5/24.5/26/28, 6 * 19S + FC- 12.5/14/15.5/17/18.5/21 5/24.5
8, elevator wire rope: 8 * 19S + FC- 10/11/12/13/16
9. Hot-dip galvanized hanging basket wire rope: 4 * 31WS + PPC- 8.3/8
10. Hot-dip galvanized wire rope: 6 * 19/6 * 37/6 * 36WS/8 * 61/8 * 36WS/
11, galvanized wire rope: 6 * 7 + FC-/2/3/4
6 * 19 + FC-5/6/7 7/9.3/11, 6 * 12 + 7FC-5/6/7. 7/9.3/11, 7 * 19-5/6/8/10, 19 * 7-4/5/6/8/10, 6 * 37 + FC-8.7/9 3/11/13/15/17.5/19.5
12. Large diameter wire rope: above 60MM
13. Wire rope rigging (insertion, pressing, pouring, connectors, etc.):
14, coated wire rope: 2-3/3 - 4/4-5/5-6/6 - 8/8-12/12-15
15, binding wire rope: 6 * 12/6 * 15-13/14/15
The front represents the structure, and the back represents the diameter. For example: 6 * 37 + FC-11, the representative structure is 6 * 37 + FC, diameter: 11MM
2, tower crane wire rope and multi-strand non-rotating wire rope: 6 * 19 + FC- 12/12.5, 6 * 37-13/14, 6 * 29FI + FC- 12/12.5, 4v39s + 5FC- 12/13/14, 35W * 7-12/13/14
3, car crane does not rotate wire rope: 4V39S + 5FC- 10/12/13/14/16/17, 35W * 7-10/12/13/14/15/16/17/18/20/22
4, pile driver flat wire rope: K6K36WS + IWR-/17.5/24/26/28/30/32/34/36/40/42/46
5, rotary excavator flat wire rope: 35W * K7- 24/26/28/30/32/36/40
6, dock crane wire rope: 6 * 36WS + IWR- 17.5/19 5/21.5/24/26
7, mine wire rope 6 * 19 + FC- 12.5/14/15.5/17/18.5/21 5/24.5/26/28, 6 * 19S + FC- 12.5/14/15.5/17/18.5/21 5/24.5
8, elevator wire rope: 8 * 19S + FC- 10/11/12/13/16
9. Hot-dip galvanized hanging basket wire rope: 4 * 31WS + PPC- 8.3/8
10. Hot-dip galvanized wire rope: 6 * 19/6 * 37/6 * 36WS/8 * 61/8 * 36WS/
11, galvanized wire rope: 6 * 7 + FC-/2/3/4
6 * 19 + FC-5/6/7 7/9.3/11, 6 * 12 + 7FC-5/6/7. 7/9.3/11, 7 * 19-5/6/8/10, 19 * 7-4/5/6/8/10, 6 * 37 + FC-8.7/9 3/11/13/15/17.5/19.5
12. Large diameter wire rope: above 60MM
13. Wire rope rigging (insertion, pressing, pouring, connectors, etc.):
14, coated wire rope: 2-3/3 - 4/4-5/5-6/6 - 8/8-12/12-15
15, binding wire rope: 6 * 12/6 * 15-13/14/15
The front represents the structure, and the back represents the diameter. For example: 6 * 37 + FC-11, the representative structure is 6 * 37 + FC, diameter: 11MM
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