Balines de plástico
Los balines de plástico se fabrican con resinas poliméricas en tamaños desde 1mm hasta 180 mm.
Los balines de plástico son una opción rentable para los balines de acero en algunas aplicaciones. Se pueden utilizar como agitadores dentro de latas de aerosol, válvulas, equipos médicos, baleros, una amplia variedad de aplicaciones.
Tolerancias hasta +/-0,0005″ (+/-0,0125mm). Las superficies pueden fabricarse a medida desde acabados rugosos hasta acabados altamente pulidos.
| Polyacetal (non filled material) (Poliacetal) | |
| Physical Properties for plastic balls | |
| Specific Gravity | 1.41-1.42 |
| Water absorption, 1/8″ thick specimen, 24h saturation (%) | 0.20-0.40 |
| Dielectric strength, 1/8″ thick specimen, short time (kV/mm) | 60-70 |
| Mechanical Properties for plastic balls | |
| Tensile strength at break (MPa) | 2800-3600 |
| Elongation at break (%) | 25-75 |
| Tensile yield strength (Mpa) | 62-84 |
| Tensile modulus (MPa) | 2800-3600 |
| Compressive strength (rupture or yield) (MPa) | 124 (10%) |
| Compressive modulus (MPa) | 4620 |
| Flexural strength (rupture or yield) (MPa) | 90-98 |
| Flexural modulus(MPa) | 2620-2960 |
| lzod impact. (J/m).of notched | 54-122 |
| Hardness Rockwell | M78-M94 |
| Thermal properties for plastic balls | |
| Coef. of linear thermal expansion (K-1) | 11 x 10-5 |
| Deflection temperature Flexural load oF @1.85MPa (°C) | 106-114 |
| @0.46MPa (°C) | 150-170 |
| Thermal conductivity Wm-1K-1 | 0.8-1.1 |
| Maximal temperature of use without strength (°C) | 90-110 |
| Polyamide (PA 6.6) (Poliamida) | |
| Physical Properties for plastic balls | |
| Specific Gravity | 1.13-1.15 |
| Water absorption, 24h saturation (%) | 2.8 |
| Dielectric strength, short time (KV/mm) | 24 |
| Mechanical Properties for plastic balls | |
| Tensile strength at break (MPa) | 85 |
| Tensile modulus (MPa) | 3450 |
| Elongation at break (%) | 45 |
| Flexural modulus(MPai) | 3200 |
| Shock impact (Charpy) KJ / m2 | 3 |
| Hardness Rockwell | R120 |
| Thermal properties for plastic balls | |
| Coef. of linear thermal expansion (K-1) | 8-9.5 x 10-5 |
| Deflection temperature Flexural load oF @1.8MPa (°C) | 70 |
| @0.45MPa (°C) | 245 |
| Maximal temperature of use without strength (°C) | 110 |
| Polyethylene High Density (Polietileno) | |
| Physical Properties for plastic balls | |
| Specific Gravity | 0.941-0.965 |
| Dielectric strength, (KV/mm) | 150 |
| Mechanical Properties for plastic balls | |
| Tensile strength at break (MPai) | 17-31 |
| Elongation at break (%) | 400-1000 |
| Tensile yield strength (MPa) | 27-28 |
| Flexural modulus(MPa) | 1250 |
| Shock impact (Charpy) KJ/m2 | 4 |
| Hardness Shore | D67 |
| Thermal properties | |
| Deflection temperature Flexural load oF @1.045MPa (°C) | 95 |
| PTFE (Politetrafluoroetileno) | |
| Physical Properties for plastic balls | |
| Specific Gravity | 2.14-2.20 |
| Dielectric strength, 1mm thick specimen (KV/mm) | 36 |
| Mechanical Properties for plastic balls | |
| Elongation at break (%) | 300-400 |
| Compressive strength (MPa) | 7-8 |
| Tensile modulus (MPa) | 750 |
| Flexural modulus(MPa) | 600-1000 |
| lzod impact.J/m of notched | 350-500 |
| Hardness Shore | D50-60 |
| Thermal properties | |
| Coef. of linear thermal expansion (K-1) | 13 x 10-5 |
| Deflection temperature Flexural load oF @1.82MPa (°C) | 50-60 |
| @0.45MPa (°C) | 130-140 |
| Thermal conductivity W/m-1/K-1 | 0.25 |
| Friction coefficient | 0.05-0.08 |
| Phenolic resin | |
| Physical Properties for plastic balls | |
| Specific Gravity | 1.32-1.87 |
| Water absorption, 1/8″ thick specimen, 24h saturation (%) | 0.1-0.6 |
| Mechanical Properties for plastic balls | |
| Compressive strength (max stress) (MPa) | 43 |
| Compressive modulus(MPa) | 3900 |
| Shock impact (Charpy) (Kj/m2) | 10-15 |
| Hardness Rockwell | H50-90 |
| Thermal properties | |
| Coef. of linear thermal expansion (K-1) | 7-12 10-5 |
| Deflection temperature Flexural load oF @1.8MPa | 88 |
| @0.45MPa | 96 |
| GRADE | ||||||||
| 0 | I | II | III | |||||
| Inches | mm | Inches | mm | Inches | mm | Inches | mm | |
| Sphericity | 0.0005 | 0.0125 | 0.0005 | 0.0125 | 0.001 | 0.025 | 0.005 | 0.125 |
| Tolerance | +/-0.0005 | 0.0125 | +/-0.001 | 0.025 | +/-0.002 | 0.050 | +/-0.005 | 0.125 |
| Surface | Polished | Polished | Unpolished | |||||