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8×K29Fi-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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8×K29Fi-IWRC 是一款8 股 K 型压实填充式西瓦股 + 独立钢绳芯的低旋转中重型压实钢丝绳，符合 GB/T 8918-2016《重要用途钢丝绳》标准，适配中型履带吊主钩、港口门座起重机、建筑塔吊起升机构、矿用提升设备等对重载、抗挤压、多层缠绕、低旋转有需求的作业工况。
型号含义拆解
型号部分 含义说明 8 外层为8 个工作股，对称排列配合交叉捻向，抵消承载扭转扭矩，实现低旋转，避免吊装时吊钩打转、货物摆动 ×K29Fi K 型压实填充式股（Fi=Filler 填充结构），每股 29 根钢丝含填充丝，经冷压实后股径缩小、钢丝贴合紧密，金属利用率与抗疲劳、抗磨损性能显著提升 -IWRC 独立钢绳芯（Independent Wire Rope Core），多为 7×19 结构，提供高支撑刚度与抗挤压能力，适配多层缠绕，承载能力与结构稳定性优于纤维芯（FC）型号 一、基础结构参数
参数项 详细说明 结构组成 8 个 K 型压实填充式外层股 + 独立钢绳芯（IWRC），外层股与绳芯交叉捻向，绳体圆整，低旋转，抗挤压性强 钢丝材质 优质高碳钢（#82B、#925），冷拔强化 + 股压实处理；外层股与绳芯钢丝表面可选热镀锌 / 电镀锌 / 光面，适配不同腐蚀工况 表面处理 1. 热镀锌：镀层厚 30~60μm，适用于沿海高盐雾、矿山潮湿等中强腐蚀重载场景2. 电镀锌：镀层厚 8~15μm，适用于干燥室内中重型起重工况3. 光面：无镀层，需定期加注专用润滑脂，适用于高精度中重型吊装场景 直径范围 常见 14~52mm，主流应用 20~44mm 中重型提升 / 牵引场景 公称抗拉强度 1770MPa、1960MPa、2160MPa（中型重载优先选 1960MPa，平衡强度与耐疲劳性） 重量系数 0.510~0.540（比同规格 8×K29Fi-FC 重 22%~25%，强度与抗挤压性能显著提升） 最小破断拉力系数 0.380~0.400（K 型压实 + IWRC 协同，金属利用率比普通 8×29Fi+FC 提升 15%~20%） 二、典型力学性能表（1960MPa 热镀锌 + IWRC 芯）
公称直径（mm） 参考重量（kg/100m） 最小破断拉力（kN） 适用场景 20 170 780 中型塔式起重机起升绳、港口门式起重机牵引绳 28 330 1500 中型履带吊主钩绳、港口件杂货起重机主起升绳 36 550 2500 大型建筑塔吊主绳、矿用提升设备主绳 44 820 3750 中型港口卸船机主绳、重型预制件吊装绳 注：热镀锌对破断拉力影响＜2%；填充丝设计减少股间摩擦，延长维护周期。三、核心特性
- 重载抗挤压，适配多层缠绕：K 型压实股提升耐磨抗挤压，IWRC 芯提供高支撑刚度，适配多层缠绕，减少股间变形、断丝风险，适合高频次起升下放作业。
- 低旋转高稳定：8 股对称排列 + 交叉捻向，有效抵消扭转扭矩，中重型吊装无明显旋转，保障精准作业。
- 耐磨耐疲劳，寿命长：填充式股结构让外层钢丝接触均匀，压实工艺减少微动摩擦，耐疲劳性能是普通 8×29Fi+FC 的 1.8~2.2 倍，降低运维成本。
- 高强度高刚性：IWRC 芯提供稳定径向支撑，整体承载能力比同规格纤维芯型号提升 20%~25%，适配中重型重载工况。
四、选型与使用要点
- 安全系数选择
- 中型履带吊主钩 / 港口件杂货起重机：8~10 倍
- 大型建筑塔吊 / 矿用提升设备：10~12 倍
- 严禁用于强酸碱腐蚀无防护、超重型长期悬挂等极端工况
- 环境适配原则
- 干燥室内中重型起重 → 电镀锌型号
- 户外 / 矿山 / 沿海中强腐蚀环境 → 热镀锌型号，定期加注防腐润滑脂
- 强腐蚀环境 → 搭配聚氨酯（PU）护套，隔绝腐蚀介质
- 卷筒与滑轮匹配
- 卷筒直径 ≥ 钢丝绳直径的 24~29 倍
- 滑轮直径 ≥ 钢丝绳直径的 22~26 倍
- 滑轮槽底为圆弧深槽精密加工，匹配绳径，避免股丝受力不均断丝
- 维护注意事项
- 定期加注 钢绳芯专用防腐润滑脂，高压注脂确保渗透至股间和绳芯缝隙
- 检查重点为 股端断丝、绳径磨损、镀层脱落、芯部损伤，单股 2 丝断丝或芯部损伤立即报废
- 运输存放用专用支架盘卷，避免挤压变形、划伤镀层；长期存放于干燥通风处，定期防锈检查
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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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