[China Aluminum Industry Network] aluminum materials according to 20,000 yuan / ton, PVC insulation strip according to 8,000 yuan / ton, domestic PA66 insulation strip by 30,000 yuan / ton, polyurethane casting rubber by 28,800 yuan / ton. The density of aluminum is 2.7g/cm, the density of PVC is 1.4g/cm, the density of PA66 is 1.3g/cm, the density of polyurethane is 1.2g/cm, and the width of the casting cavity is usually 0.8cm smaller than the width of the cavity. The general wall thickness of the profile is 0.14 cm, and the length of the profile is calculated as 600 cm.
1 Casting aluminum profiles (aluminum profiles related to door and window information) cost savings for each bar compared to wearing strips:
Each saves aluminum weight: 0.8cm × 0.14 × 4 × 600cm × 2.7g/cm = 725.8g = 0.7258kg Each aluminum cost savings: 0.7258kg × 20 yuan / kg = 14.52 yuan / root
2 wear strips for:
Article thickness is 0.2cm, strip width is 1.5cm, length is 600cm (1) each aluminum profile (aluminum profiles related door and window information) PVC wear strips Dosage: (0.2 × 1.5) × 2 × 600 × 1.4g/cm = 504g =0.5kg per aluminum profile (aluminum profiles related door and window information) PVC wear strip cost: 0.5kg×8.00yuan/kg=4.00yuan/root (2) per aluminum profile (aluminum profiles related door and window information) PA66 wear strips (0.2 × 1.5) × 2 × 600 × 1.3g/cm = 468g = 0.47kg per aluminum profile (aluminum profiles related to windows and doors information) PA66 wearing cost: 0.47kg × 30 yuan / kg = 14.1 yuan / root
3 The amount of polyurethane is:
Each aluminum profile (aluminum profile related door and window information) Polyurethane dosage (AA tank): 0.71cm2×1.2g/cm×600cm/root=511.2g=0.5112kg/root per aluminum profile (aluminum profiles related door and window information) Cost of polyurethane : 0.5112 kg/root×28.8 yuan/kg=14.72 yuan/root
4 Cast aluminum profiles (aluminum profiles related to windows and doors information) save more than PVC strips:
14.52 yuan/root—(14.72 yuan/root—4.00 yuan/root)=3.8 yuan/root
5 Cast aluminum profiles (aluminum profile related windows and doors information) than nylon 66 wear strips each save:
14.52 yuan/root—(14.72 yuan/root—14.1 yuan/root)=13.9 yuan/root
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