行业组件数据 · 2026

耳轴吊钩

Heavy-duty forged steel hooks designed for ladle carriers to safely lift and transport molten metal containers in steel mills.

技术定义与适配语境
典型 耳轴吊钩 会按材料、尺寸公差、适配关系和失效风险在 机械和设备制造 中评估。

Trunnion hooks are critical forged steel lifting components specifically engineered for ladle carriers (yokes) in steelmaking operations. These hooks engage with the trunnion pins on ladles to provide secure attachment points for transporting molten metal between processing stages. They feature reinforced geometry, heat-resistant materials, and precise dimensional tolerances to withstand extreme thermal cycling, mechanical shock loads up to 500 tons, and corrosive environments while maintaining operational safety.

组件规格

定义
Trunnion hooks are critical forged steel lifting components specifically engineered for ladle carriers (yokes) in steelmaking operations. These hooks engage with the trunnion pins on ladles to provide secure attachment points for transporting molten metal between processing stages. They feature reinforced geometry, heat-resistant materials, and precise dimensional tolerances to withstand extreme thermal cycling, mechanical shock loads up to 500 tons, and corrosive environments while maintaining operational safety.
工作原理
The hooks utilize a C-shaped forged body with a tapered throat that mechanically interlocks with cylindrical trunnion pins on the ladle. When the ladle carrier lifts, the hook's load-bearing surface distributes weight evenly across the trunnion pin while the safety latch prevents accidental disengagement. The design converts vertical lifting force into compressive stress along the hook's inner radius, optimized through finite element analysis to prevent stress concentration and fatigue failure.
材料
AISI 4140 alloy steel (quenched and tempered to 280-320 HB)ASTM A668 Class D forged steelor heat-resistant low-alloy steels with 0.4-0.5% carbon content. Surface treatment: shot peening for fatigue resistance + high-temperature anti-corrosion coating.
Weight
150-2000 kg depending on capacity
Hardness
280-320 Brinell
Load Capacity
100-500 metric tons
Safety Factor
5:1 minimum per FEM 9.511
Surface Finish
Ra 3.2 μm minimum
Throat Opening
300-800 mm
Working Temperature
Up to 400°C continuous, 600°C peak
标准
ISO 7597DIN 15401FEM 9.511ASTM A668

行业分类与别名

耳轴吊钩 的常用贸易名称、技术标识和检索关键词。

上级产品

该组件会出现在以下整机或工业产品中。

FMEA · 风险与缓解

诱因 → 失效模式 → 工程缓解

Thermal stress cycling between 50°C and 400°C->Fatigue cracks initiating at inner radius->Regular NDT inspection + shot peening surface treatment
Impact loading during ladle engagement->Deformation of hook throat geometry->Install shock-absorbing pads + operator training
High-temperature operation exceeding 500°C->Tempering effects reducing material strength->Use heat-resistant alloy steels + cooling systems

工业生态与工程逻辑

0
Fatigue cracking from thermal cycling
1
Overload deformation
2
Wear at contact surfaces
3
Latch mechanism failure
4
Material embrittlement at high temperatures

合规与检测

tolerance
±2mm on critical dimensions, ±0.5° on angular surfaces
test method
Proof load testing at 2x rated capacity, magnetic particle inspection, ultrasonic thickness measurement, dimensional verification with CMM

制造该组件的工厂

来自 CNFX 组件能力表的相关制造商资料。

制造商列表用于前期研究和供应商能力理解,不代表认证、排名或交易担保。

采购评估维度

不是客户评论,也不是实时热度。以下维度用于前期 RFQ 准备和供应商评估。

技术文档
4/5
制造能力
4/5
可检验性
5/5
供应商透明度
3/5

这些分值是采购评估维度示例,不代表真实客户评分、具体国家买家反馈或实时询盘。

相关组件

常见问题

What inspection frequency is recommended for trunnion hooks?

Visual inspection before each shift, dimensional checks monthly, magnetic particle testing quarterly, and full load testing annually per ISO 7597 standards.

Can trunnion hooks be repaired if cracked?

No - forged hooks with any crack indication must be replaced immediately. Repair welding is prohibited due to altered metallurgical properties and stress concentrations.

How do I select the correct hook size for my ladle?

Match the hook's throat opening to the trunnion pin diameter with 10-15mm clearance, and ensure the load rating exceeds the maximum ladle weight by a 5:1 safety factor.

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URN:CNFX:ME:UNIT:TRUNNION_HOOKS