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Cast iron sand box is mainly used for box casting, including green sand casting, resin sand casting, vanishing mold casting, film-coated sand casting, etc. need sand box as a carrier for making sand mold, can be customized according to the size of the casting sand box.
In processes such as wet sand casting, resin sand casting, and lost foam casting, the sand box is the core carrier of casting molding, and its performance directly affects the precision and production efficiency of castings. Cast iron sand boxes have become the preferred process equipment for global foundries due to their high cost-effectiveness, structural stability, and deep customization capabilities. This article will deeply analyze how cast iron sand boxes can achieve efficient satisfaction of multi-scenario casting needs from the dimensions of technical standards, process adaptability, customization advantages, and industry applications.
Product Description
1. Technical standards and core advantages of cast iron sand box
Based on GB/T 9439-2010 and ISO 185 standards, cast iron sand box (HT200/HT250) achieves performance breakthroughs through material and structural innovation:
Excellent material performance:
Tensile strength ≥ 200MPa, hardness HB 180-240, 3 times higher than the load-bearing capacity of cast aluminum sand box, suitable for high-pressure molding (specific pressure 1.5-2.0MPa) and large castings (single weight ≤ 30 tons) requirements;
Excellent heat fatigue resistance, can be used for more than 5000 times at below 400ºC, and annual maintenance costs are reduced by 60%.
Scientific structural design:
The box wall adopts stepped reinforcement ribs (thickness 15-40mm), with staggered exhaust holes (Φ8-15mm), air permeability>120cm³/min, eliminating the pore defect rate to below 0.5%;
The positioning pin hole tolerance is ±0.02mm, ensuring the box assembly accuracy ≤0.1mm, and the casting size tolerance is stable at CT8-9 level.
Flexible process adaptation:
Lost foam casting: double-layer breathable structure (inner stainless steel mesh + outer sealing steel plate), negative pressure uniformity>95%, solving the problems of box collapse and shrinkage;
Coated sand casting: detachable box belt design, suitable for complex cavity demolding, sand mold compactness ≥85%, surface roughness Ra6.3μm.
2. Customized solutions for multi-process casting scenarios
The cast iron sand box can be deeply customized according to the casting size (50mm-5000mm), molding equipment (manual/automatic line) and process characteristics:
Wet sand casting sand box:
Sand intake optimization: side wall sand intake 30-80mm, top surface sand intake 50-100mm, adapted to the expansion characteristics of 3.5-5.0% moisture content of wet sand;
Quick mold change system: modular box ears and T-slot guide rails, mold change time <30 minutes, improve production line flexibility.
Resin sand casting sand box:
Anti-sticking sand design: WC-Co coating (thickness 0.2mm) is sprayed on the inner wall of the box to reduce the resin film residue rate to <0.3%;
High temperature deformation resistance: the box belt reinforcement ribs are arranged in a 45° cross layout, and the deformation of temperature sudden change (20ºC→300ºC) is <0.1mm/m.
3. Customized design process and benefit analysis of cast iron sand box
Customization process:
Demand diagnosis: 3D scanning of castings → process simulation (Magma/ProCAST) → sand box load and thermal stress analysis;
Structural design: parametric modeling (box wall thickness/rib density/positioning hole layout) → dynamic stiffness verification (ANSYS);
Trial production verification: 3D printing sand box prototype → casting process matching test → mass production optimization.
Certifications
Factory Panorama
Factory Address
QINGDAO SANZHUJI
Specializing in the production of sand casting machinery, including green sand casting production line, furan resin sand casting production line, lost foam casting production line, coated sand steel sand buried casting production line, the company has a history of 14 years since its establishment.
Contact Us
Address:North of G204 National Road, Poli Town, West Coast New Area, Qingdao, China
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