Overview
Foundry binders are specialized adhesives that hold sand particles together to create durable molds and cores for metal casting. They are classified into organic (e.g., phenolic urethane, furan) and inorganic types (e.g., sodium silicate, phosphate). The choice depends on metal type, mold complexity, and environmental factors. Modern binders balance strength with collapsibility to ease post-casting sand removal. Eco-friendly formulations are gaining traction, reducing volatile organic compound (VOC) emissions during pouring and cooling.
Physical and Chemical Properties
Binders exhibit varying viscosity, curing speed, and thermal resistance. Organic binders typically polymerize at 150-250°C, while inorganic types endure higher temperatures (up to 1000°C). Key metrics include tensile strength (0.5-2 MPa for cured sand) and gas permeability. Water-based binders dominate aluminum casting due to lower heat requirements, whereas iron/steel foundries prefer solvent-based systems for high-temperature stability. Newer formulations incorporate nanoparticles to enhance strength without compromising shakeout properties.
Main Applications
Primary use is in green sand (bentonite-bonded) and resin sand systems for automotive, aerospace, and heavy machinery components. Furan binders excel for intricate cores in gray iron casting, while phenolic urethane suits high-volume production. Sodium silicate binders, activated by CO2 or esters, are preferred for large steel castings due to non-toxic decomposition. Niche applications include investment casting shell reinforcements using ethyl silicate.
Safety and Storage
Store in sealed containers away from heat sources. Phenolic binders require ventilation due to formaldehyde release during curing. Inorganic binders are safer but may cause alkaline burns. Always follow SDS guidelines: use nitrile gloves and respirators when handling liquid binders. Shelf life ranges from 6 months (organic) to 2 years (inorganic). Monitor viscosity changes in stored products.
B2B Procurement Guide
Specify metal type (ferrous/non-ferrous), production volume, and curing method (heat, gas, air-set). Request Technical Data Sheets (TDS) for strength curves and gas evolution data. Bulk purchases (1+ metric tons) typically offer 10-15% cost savings. Consider regional suppliers to minimize logistics costs for liquid products. Audit supplier ISO 9001/14001 certifications for quality assurance.
Related Manufacturers
- 主营：[]
- 主营：[]
- 主营：硅溶胶、碱性硅溶胶、酸性硅溶胶、铸造、快干型硅溶胶、大粒径硅溶胶、超高纯度硅溶胶、阳离子硅溶胶
- 主营：覆膜砂、石英砂、石英粉、铸造覆膜砂、重晶石粉、圆粒砂、圆粒石英砂、硅石粉、白色硅微粉
- 主营：高岭土、膨润土、硅藻土、粘结剂、碳酸钙、滑石粉、木粉、木质纤维、负离子粉、水洗高岭土、煅烧高岭土、轻质碳酸钙、重质碳酸钙、钙基膨润土、钠基膨润土、玉米芯、杨木粉、沸石粉、负离子液
- 主营：油漆陶瓷原料、添加用硅酸铝粉、煅烧高岭土、铸造用膨润土、水洗高岭土、滑石粉、膨润土、黄陶土、红陶土、轻质碳酸钙、重质碳酸钙、铝矾土、重晶石粉、石英砂、沸石粉、海泡石
- 主营：憎水剂、模具胶、硅脂、粘结剂、防水剂、消泡剂、润滑脂、甲基硅油、二甲基硅油、柔软剂、含氢硅油、硅橡胶、295硅脂、制线硅油、羟基硅油、工业硅脂、定制硅脂、透明模具、桥梁硅脂、硅油、偶联剂、107硅橡胶
- 主营：超细硅酸铝粉、硅藻土、膨润土、粘结剂、高岭土、滑石粉、彩砂、透明粉、白炭黑、金刚砂、石墨、海泡石、木粉、轻钙、重钙、玻璃粉、贝壳粉、凹凸棒土、玻璃鳞片、陶土、铝矾土、火山岩、电气石粉、合成云母、赤铁粉
- 主营：铝矾土粉、莫来石砂粉、棕刚玉砂粉、型芯粘结剂、铸造碳钢涂料、铸造高锰钢涂料、白刚玉砂粉、封箱泥膏(条)、镁橄榄石砂粉、宝珠砂、石英粉、电熔镁砂、冒口保温发热覆盖剂、冷芯盒脱模剂、铸铁涂料
- 主营：免烘干、粘合剂、肥料造粒、粘结剂、氧化铁皮粘结剂、变性淀粉、糊化淀粉、阿尔法淀粉、玉米预糊化、预糊化淀粉、免烘干粘合剂、型煤粘合剂、除尘灰粘合剂、焦粉粘合剂、肥料造粒剂、型煤胶粉、铁粉粘合剂、氧化铁粉、除尘灰脱锌粘合剂、焦炭块、焦末、焦沫、新型焦炭、石墨增碳剂、增碳剂造粒
- 主营：芳烃油、石蜡油、矿物导热油、植物沥青铸造粘结剂、工业级白油、软化增塑剂、橡胶填充油、高温导热油、合成材料助剂
- 主营：防腐涂料、保温涂料、防水涂料、强力瓷砖粘结剂、防水卷材、无机硅声能凝胶、路桥防水涂料、金属防锈漆、隔热涂料、吸音涂料、补漏王、瓷砖胶、聚氨酯、隔音涂料
- 主营：中空玻璃微珠、隔音吸音涂料、保温隔热涂料、粘结剂、渗透结晶防水、道桥防水涂料、jrk防腐、桥面防水、防腐涂料、沥青基防水、建筑防水剂、防水粘结材料、弹性防水涂料、反应路桥防水、无机硅防水剂、沥青防水涂料、渗透结晶密封、防腐保护涂料、防水桥面涂料、硅渗透防水剂、改性沥青桥面、沥青防水粘结、防腐防水涂料、专用防水涂料、弹性防护涂料、水性渗透结晶
- 主营：防水涂料、隔热保温涂料、家装补漏、瓷砖粘结剂、翻新隔热、防腐防水涂料、防水卷材、保温凝胶、路桥防水、吸音隔音涂料
- 主营：高效减水剂、高强无收缩灌浆料、自流平水泥砂浆、EPS专用粘结剂、环氧修补砂浆、自密实细石混凝土、高延性混凝土、混凝土膨胀剂、抗渗防水剂、路面快速修补砂浆、速凝剂、混凝土早强剂、防水涂料、聚合物防水抗裂砂浆、聚合物水泥砂浆、混凝土防腐阻锈剂、混凝土色差修复剂、桥梁支座灌浆料、环氧树脂、铝酸盐无机防腐砂浆、隧道微膨胀注浆料、混凝土保护剂、金刚砂耐磨材料、防静电不发火砂浆、结构立面修补砂浆、水下不抗分散混凝土剂
- 主营：石墨粉、氢氧化钙、高纯石英砂、铸造用石英砂、石英粉、硅微粉、硅酸钾、玻璃纤维布、水玻璃、辉绿岩铸石粉、环氧树脂、环氧树脂固化剂、活性炭、消石灰、耐高温耐磨材料、钾水玻璃、耐高温涂料、玻纤布、泡花碱、辉绿岩粉、耐酸水泥、玻璃丝布、水处理石英砂、水过滤石英砂、防腐石英砂
- 主营：胶结剂、保温砂浆、水泥砂浆、粘结剂、珍珠岩保温、混凝土增强剂、轻质抹灰石膏、路面修补材料、拌砂浆添加剂、地下室防水涂料、加固修补混凝土、高柔韧性混凝土、石膏自流平砂浆、石膏自流平施工、内墙腻子粉、羟丙基甲基纤维素、防水砂浆、乳胶粉、可再分散乳胶粉、水泥自流平、混凝土防碳化防护涂、蒸压加气混凝土墙体专、高强聚合物砂浆、地面砂浆、JZ-速砼、高强无收缩灌浆料