行业组件数据 · 2026

喷枪头/喷嘴块

A precision component in oxygen lance systems that controls oxygen flow and distribution during steelmaking processes.

技术定义与适配语境
典型 喷枪头/喷嘴块 会按材料、尺寸公差、适配关系和失效风险在 基础金属制造 中评估。

The Lance Tip/Nozzle Block is a critical component of the Oxygen Lance System used in basic oxygen furnaces (BOF) and electric arc furnaces (EAF). It serves as the terminal interface where high-pressure oxygen is expelled into molten metal baths. This component features precisely engineered orifices that atomize and direct oxygen streams to facilitate decarburization, temperature control, and slag formation during steel production. Its design directly impacts process efficiency, refractory wear, and final steel quality.

组件规格

定义
The Lance Tip/Nozzle Block is a critical component of the Oxygen Lance System used in basic oxygen furnaces (BOF) and electric arc furnaces (EAF). It serves as the terminal interface where high-pressure oxygen is expelled into molten metal baths. This component features precisely engineered orifices that atomize and direct oxygen streams to facilitate decarburization, temperature control, and slag formation during steel production. Its design directly impacts process efficiency, refractory wear, and final steel quality.
工作原理
The component operates by receiving high-pressure oxygen through the lance body and distributing it through multiple calibrated nozzles. These nozzles create supersonic oxygen jets that penetrate the molten metal bath, promoting chemical reactions (primarily oxidation of carbon and impurities) and creating turbulence for homogeneous mixing. The nozzle geometry (typically Laval or convergent-divergent design) accelerates oxygen to velocities exceeding Mach 2, ensuring deep penetration and efficient reaction kinetics while minimizing splashback and refractory erosion.
材料
High-temperature copper alloys (typically chromium-copper or zirconium-copper) with water-cooling channelsAlternative materials include high-grade stainless steels (316L) for specific applicationsInternal surfaces may feature ceramic coatings (alumina or zirconia) for enhanced erosion resistance.
Weight
50-200 kg
Flow Rate
500-1200 Nm³/min
Connection Type
Flanged or threaded
Nozzle Diameter
15-40 mm
Number of Nozzles
3-8
Cooling Water Flow
50-150 m³/h
Operating Temperature
Up to 2000°C (intermittent)
Oxygen Pressure Range
0.8-1.5 MPa
标准
ISO 4957DIN 17400ASTM B224

行业分类与别名

喷枪头/喷嘴块 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

Cyclic thermal loading during lance insertion/retraction->Thermal fatigue cracks in copper alloy->Implement controlled heating/cooling cycles; Use materials with higher thermal fatigue resistance
High-velocity particle impingement from slag/metal droplets->Progressive erosion of nozzle throat->Apply ceramic coatings; Regular dimensional inspection and replacement before critical erosion
Corrosion in cooling water channels->Coolant leakage into molten bath causing steam explosion->Use treated cooling water; Implement pressure monitoring and automatic shutdown systems

工业生态与工程逻辑

0
Thermal shock failure
1
Erosion-induced flow distortion
2
Coolant leakage causing explosions
3
Nozzle blockage leading to pressure spikes

合规与检测

tolerance
Nozzle diameter ±0.1 mm; Angular alignment ±0.5°; Surface roughness Ra ≤ 1.6 μm
test method
Hydrostatic pressure testing at 3x operating pressure; Flow calibration using ISO 5167; Dimensional verification with CMM; Thermal cycling simulation

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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 is the typical lifespan of a lance tip/nozzle block?

Lifespan varies from 200-800 heats depending on operating conditions, material quality, and maintenance practices. Regular inspection for erosion and thermal cracking is essential.

How does nozzle design affect steelmaking efficiency?

Nozzle geometry determines oxygen jet characteristics. Optimal designs maximize bath penetration while minimizing splash and refractory wear, typically improving yield by 0.5-1.5%.

What are common failure modes?

Primary failures include thermal fatigue cracking, erosion from high-velocity particles, blockage from slag buildup, and coolant leakage from corrosion or mechanical damage.

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URN:CNFX:ME:UNIT:LANCE_TIP_NOZZLE_BLOCK