Overview
Lead extrusions are precision-formed components created by pushing lead or lead alloys through a die under high pressure. This process yields continuous profiles with consistent cross-sections, tailored for industrial applications requiring lead's unique properties. Extrusions are favored over castings for complex shapes with tight tolerances. Common profiles include rods, tubes, and custom geometries for radiation shielding (e.g., X-ray rooms) or construction (e.g., expansion joints). The extrusion process enhances lead's natural malleability, allowing intricate designs without compromising its density (11.34 g/cm³) or radiation attenuation capabilities.
Structure and Working Principle
Lead extrusions rely on hydraulic or mechanical presses to force heated lead billets through hardened steel dies. Temperatures typically range between 200–300°C to reduce extrusion pressure while avoiding melting. The die’s aperture determines the profile shape, with post-extrusion cooling stabilizing dimensions. Key structural advantages include seamless continuity (critical for radiation barriers) and uniform grain flow, which enhances mechanical stability. Alloying elements like antimony (1–6%) may be added to improve hardness for applications such as battery grids or roofing flashings.
Key Features
Density and radiation shielding: Lead’s high atomic number (82) makes extrusions ideal for blocking gamma rays and X-rays, with thicknesses calculated using the half-value layer principle. A 1cm lead extrusion attenuates ~50% of 100 keV photons. Corrosion resistance: Lead forms a protective oxide layer, resisting sulfuric acid (valuable in battery cases) and atmospheric moisture. Extrusions outperform coatings in longevity for harsh environments like chemical plants or marine settings.
Application Areas
Healthcare: Custom extrusions line CT scanner rooms and nuclear medicine labs, often clad in aluminum for cleanliness. Modular designs allow onsite assembly. Construction: Lead flashings and vibration-damping strips exploit extruded lead’s weatherproofing and sound absorption. Extrusions conform to ASTM B749 standards for building materials. Industrial: Battery manufacturers use extruded lead-calcium grids for maintenance-free batteries, while semiconductor labs employ lead bricks for equipment shielding.
Maintenance and Precautions
Lead extrusions require minimal maintenance due to their inertness, but surface cleaning with mild detergents prevents particulate buildup in sensitive areas like cleanrooms. Avoid abrasive methods that generate dust. Safety protocols mandate OSHA-compliant PPE (gloves, respirators) during machining or welding. Work areas need HEPA vacuum systems to capture lead particles. Disposal must follow local hazardous waste regulations, with recycling preferred given lead’s 100% recyclability.
B2B Procurement Guide
Specify alloy composition (e.g., pure lead for radiation vs. antimony-lead for structural parts) and tolerances (±0.1mm is achievable for precision extrusions). Volume discounts apply for orders exceeding 1 metric ton. Supplier evaluation should include ISO 9001 certification and material traceability. Lead time ranges from 2–6 weeks for custom dies. For international shipments, verify compliance with REACH and RoHS exemptions for industrial lead use.
Related Manufacturers
- 主营：铅板、配重铅块、铅门、铅房、射线防护铅玻璃、防辐射铅房、铅件、铅制品、铅锭、3mm铅板、防辐射铅箱、储存铅箱、电动铅门、不锈钢铅门、铅皮、铅粒、铸造铅件、铅浇铸件、铅板厂家、铅复合板、移动铅房、铅砖、铅块、硫酸钡砂
- 主营：防辐射铅门、防辐射铅板、铅箱、铅玻璃、铅门、铅块、铅件、铅丝、铅板、核医学专业防护、核医学通风橱
- 主营：dr室铅板、铅丝、铅棒、铅块、铅门、铅房、铅帘、铅板、辐射防护工程
- 主营：防辐射铅门、防辐射铅板、防辐射铅房、防辐射铅玻璃、防辐射铅箱、铅块、铅锭、铅砖、铅加工件、工业探伤铅门、工业探伤铅房、防辐射硫酸钡砂、防辐射硫酸钡板
- 主营：自动门、硫酸钡砂、气密门、6mm铅板、ect铅门、3mm铅板、8mm铅板、2mm铅板、5mm铅板、室铅门、4mm铅板、x光铅门、dr室铅板、ct室铅板、自动铅门、铅门、铅 屏风、铅玻璃、防护门、防护材料、探伤房、探伤门、加速器防护门、MR核磁屏蔽
- 主营：防辐射材料、防辐射门、射线防护工程、铅桶、铅玻璃、防辐射铅门、2mm铅板、纯铅板、防辐射铅板、铅屏风、铅箱、铅罐、配重铅块、铅砖、铅板、铅门、铅粒、防辐射屏风、重晶石粉、硫酸钡砂、射线防护、辐射防护、医用门、钢质门
- 主营：99.85铝锭、保温铝皮、保温铝卷、铅锭、一号铅锭、电解铅锭、铅材、99.996%铅、配重铅件、压型铝瓦、合金铝板、6063铝管、铝材、99.7铝锭
- 主营：工业探伤门、工业探伤房、射线防护工程、防辐射铅门、防辐射铅板、异形铅板、铅浇筑件、铸造铅块、铅件异形铅加工件、浇铸铅块、浇铸铅件、铅板、铅门、铅板施工、铅门安装、防辐射材料
- 主营：保险丝、熔断丝、储存容器、铅制品、实心铅棒、医用铅箱、配重铅块、异形铅块、废弃铅罐、异形铅砖、精密铅件、异性铅块、储存铅箱、防护铅罐、铅锑合金管、防辐射铅桶、防辐射铅皮、防辐射铅箱、耐腐蚀铅砖、铅锑合金板、防辐射用铅箱、挤压浇铸铅砖块、放射性储存铅罐、防辐射砖、移动式隔断
- 主营：复合板、探伤门、防护门、电动铅门、防护铅皮、单开铅门、平移铅门、感应铅门、口腔铅门、防护铅板、防护铅门、手动铅门、防辐射铅门、不锈钢铅门、放射科铅板、防辐射铅板、高密度铅板、防辐射纯铅板、防x光射线铅板、防护板、防护材料、电解钢板、防护安装、防护电动门、推拉电动门
- 主营：sa675gr70、f11圆钢、f92圆钢、C85500铅黄铜棒、f51圆钢、f91圆钢、34crnimo6、60si2crva、30crmntih、20crnimoa、b16圆钢、20crmnmoa、25#圆钢、30crnimo8、17crnimo6、h13圆钢、f53圆钢、f52圆钢、30crmnsia、40crmnmoa、f55圆钢、a36圆钢、f22圆钢、20crni2mo、f60圆钢、35crmnsia
- 主营：医用气密门、防护钡板、核医学通风橱、电动铅门、防辐射铅门、防辐射铅板、防辐射铅玻璃、铅棒、铅砖、配重铅块、铅箱、核医学铅桶、铅罐、铅丝、铅管、铅锭、探伤门、工业探伤房
- 主营：铝管、铝方管、铝型材、挤压铅棒、铝棒、铝板、无缝铝管、铜管、铜棒、铜板
- 主营：铅锡锑合金、锡渣回收、锡回收、锡条回收
- 主营：重锤、绝缘箱、阳极管、铅锑合金阴极线、铅锭、锡锭、阴极线、芒刺线、水泵、瓷瓶、RS阴极线、喷淋、干电阴极线、阳极板、钉子线、加热圈、吊杆