The short answer Choose die casting when the housing must carry load, spread heat, block electromagnetic interference or survive fire. Choose injection moulding when it must insulate, stay light and reach a low piece price. Tooling runs 15,000 to 60,000 dollars against 3,000 to 25,000, so volume decides the rest. Start with the material, not the process Die casting and injection moulding look ...

The short answer Porosity, cold shuts, flash, shrinkage, hot cracks and die soldering cause most die casting rejects. Start with the void shape: round voids are gas from venting and shot profile, jagged voids are shrinkage from feeding and wall design. Cut a section before changing any parameter. The defect map Die casting has a short list of failure modes and a long list of causes, and the us...

The short answer Zinc wins on strength per unit volume and on thin walls; aluminium wins on strength per kilogram. Zamak 3 reaches 215 to 283 MPa tensile with about 10 percent elongation, against about 320 MPa with 1.5 to 3.5 percent for A380. Zinc is 2.4 times denser, so aluminium wins any weight-driven programme. Strength: the same headline number, two different meanings Zinc and aluminium a...

The short answer Zinc die casting suits small to medium parts that need thin walls, fine detail, tight as-cast tolerance and a platable finish: locks and door hardware, plumbing fittings, electrical connectors, power-tool and appliance parts, and decorative components. It is the wrong choice for large, weight-critical or high-temperature parts. Six product families, and why zinc fits each Zinc...

The short answer Plan on 8 to 12 weeks for new aluminium die casting tooling: about 2 to 3 weeks of die design, 4 to 6 weeks of steel machining and 1 to 2 weeks each of benching and tryout. First production then runs 3 to 4 weeks, and repeat orders 2 to 3 weeks. The project in four milestones, not one number A single lead-time figure is the least useful number a buyer can be given, because the...

The short answer Aluminium die casting suits vehicles and aircraft because one process delivers thin-wall complexity, low mass and a heat path at automotive volume. Density is 2.7 against 7.8 g/cm3 for steel, walls go to 1.5 mm, thermal conductivity is 90 to 120 W per metre-kelvin, and a shot takes 30 to 90 seconds. What a vehicle asks for, and which property answers it A car and an aircraft a...

The short answer At high volume die casting wins on unit price, but only above a crossover that lands somewhere between 500 and 3,500 pieces depending on the die cost. Below it CNC machining is cheaper because there is no tooling to repay. The honest answer is often hybrid: cast the body, machine only the features that carry a dimension. The decision is one division, so run it on your own numb...

The short answer Die casting forces metal into a reusable steel die at 10 to 175 megapascals, making a part every 30 to 120 seconds at ±0.1 to 0.25 mm. Sand casting pours into a disposable sand mould under gravity and holds only ±0.5 to 1.0 mm, so it wins below 5,000 pieces and for ferrous metals. Same idea, opposite economics Both processes pour liquid metal into a cavity, and almost everythi...

The short answer Aluminium alloy die casting injects molten aluminium into a hardened steel die under high pressure and holds it while it freezes, so one reusable die produces a near-net-shape part in seconds. Melt sits at 650 to 710 degrees, the cavity fills in 20 to 50 milliseconds, and as-cast tolerance lands near plus or minus 0.25 mm. What the process actually is Aluminium alloy die casti...

The short answer Zinc alloy die casting injects molten Zamak into a steel die on a hot-chamber machine, where the gooseneck sits in the melt. Zinc pours at 380 to 430 degrees Celsius, roughly 250 degrees cooler than aluminium, so dies last 500,000 to 1,000,000 shots, cycles run in seconds and walls go down to 0.5 mm. What the process is, and why it is a hot-chamber process Zinc alloy die casti...