行业组件数据 · 2026

腐蚀衬里/覆层

Corrosion-resistant protective layer applied to pressure vessel interiors to prevent chemical degradation and extend service life.

技术定义与适配语境
典型 腐蚀衬里/覆层 会按材料、尺寸公差、适配关系和失效风险在 化学制造 中评估。

A corrosion liner or cladding is a specialized protective layer bonded or applied to the interior surface of pressure vessel shells to isolate the base metal from corrosive process fluids, chemicals, or environments. This component functions as a barrier against chemical attack, erosion-corrosion, and stress corrosion cracking, maintaining structural integrity while preventing contamination of stored or processed materials. It is engineered to withstand specific temperature, pressure, and chemical exposure conditions typical in industrial applications.

组件规格

定义
A corrosion liner or cladding is a specialized protective layer bonded or applied to the interior surface of pressure vessel shells to isolate the base metal from corrosive process fluids, chemicals, or environments. This component functions as a barrier against chemical attack, erosion-corrosion, and stress corrosion cracking, maintaining structural integrity while preventing contamination of stored or processed materials. It is engineered to withstand specific temperature, pressure, and chemical exposure conditions typical in industrial applications.
工作原理
The corrosion liner/cladding operates on the principle of sacrificial or barrier protection. It creates a continuous, impermeable layer between the corrosive medium and the vessel's structural material (typically carbon or low-alloy steel). By selecting materials with superior corrosion resistance (e.g., stainless steels, nickel alloys, polymers, or ceramics), it prevents direct contact and electrochemical reactions that would degrade the base metal. The liner may be mechanically bonded, welded, or chemically adhered to ensure no gaps or disbonding under operational stresses.
材料
Common materials include austenitic stainless steels (304L316L)duplex stainless steels (2205)nickel alloys (Inconel 625Hastelloy C-276)titanium alloysglass-reinforced epoxy (GRE)polypropylene (PP)fluoropolymers (PTFEPVDF)and ceramic coatings. Selection depends on chemical compatibilitytemperature range (-50°C to 400°C typical)pressureand mechanical properties.
Thickness
1.5 mm to 10 mm
Bond Strength
≥ 10 MPa
Surface Finish
Ra ≤ 0.8 μm for metallic liners
Pressure Rating
Up to 100 bar
Temperature Range
-50°C to 400°C
Corrosion Resistance
pH 0-14, specific chemical compatibility
标准
ISO 15614DIN 28055ASME BPVC Section VIIINACE MR0175

行业分类与别名

腐蚀衬里/覆层 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 expansion mismatch between liner and base metal->Cracking or disbonding of liner->Use materials with compatible thermal coefficients; design expansion joints; control heating/cooling rates
Abrasive or erosive process fluids->Thinning or perforation of liner->Select harder materials (e.g., ceramic coatings); design for fluid velocity control; regular thickness monitoring
Improper welding or bonding during installation->Localized corrosion at defects->Follow qualified welding procedures; conduct NDT (PT, UT); certify installers to standards like ASME IX

工业生态与工程逻辑

0
Liner disbonding due to thermal cycling
1
Crack propagation from mechanical stress
2
Chemical permeation leading to base metal corrosion
3
Improper installation causing leaks

合规与检测

tolerance
Thickness tolerance ±10%; flatness ≤ 2 mm/m; bond coverage ≥ 95%
test method
Hydrostatic testing per ASME BPVC; adhesion test per ASTM D4541; holiday detection per NACE SP0188

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 is the difference between a liner and cladding?

A liner is typically a separate sheet or layer mechanically attached or loosely fitted, while cladding is metallurgically bonded (e.g., weld overlay, explosion bonding) to the base material, offering better thermal and mechanical integration.

How often should corrosion liners be inspected?

Inspect during regular pressure vessel shutdowns, typically every 12-24 months, using non-destructive testing (NDT) like ultrasonic testing (UT) or visual inspection for cracks, disbonding, or thinning.

Can a damaged corrosion liner be repaired?

Yes, localized repairs are possible via welding, patching, or reapplication of coating, but must comply with original design standards and be tested for integrity post-repair.

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CNFX Industrial Component Index · 化学制造

数据基础

CNFX 制造商资料、技术分类、公开产品信息和持续合理性检查。

初步技术归类
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URN:CNFX:ME:UNIT:CORROSION_LINER_CLADDING