Precision Sheet Metal Stamping, Pressing & Power Press Job Work Vasai · Mumbai · Palghar

Power presses are used for sheet metal stamping operations including blanking, piercing, punching, embossing, deep drawing, notching, coining, and forming. A power press applies controlled force through a die set to deform, cut, or shape sheet metal into precise components. At Aero Enterprises Unit I, 20 power presses from 10T to 150T run progressive die, compound die, and deep draw stamping operations for LED lighting, automotive, solar tracker, furniture, and stationery OEM clients across Vasai, Mumbai, Thane, and Palghar.

A mechanical power press uses a flywheel and crankshaft mechanism to deliver a fixed-energy, high-speed stroke at 60 to 100 strokes per minute — correct for high-volume thin-gauge blanking and piercing. A hydraulic power press delivers programmable force at controlled speed across the full stroke — correct for deep drawing, thick material forming, and operations requiring blank holder force control. At Aero Enterprises Unit I, mechanical presses cover 10T to 60T and hydraulic presses cover 75T to 150T, with press type allocated per job based on operation type, material, and tonnage requirement.

Progressive die stamping uses coil-fed sheet metal strip advancing through multiple die stations with each press stroke. Each station performs one or more operations — blanking, piercing, forming, bending — until the completed component exits the final station. Progressive die stamping is correct for components above 500 pieces per order where per-piece cycle time must be minimised and batch dimensional consistency is a specification requirement. Tooling investment is higher than compound or single-stage dies but amortises at high-volume production scale.

Progressive die stamping performs multiple operations sequentially across multiple stations as the strip advances — correct for high volume and complex multi-feature components. Compound die stamping performs blanking and piercing simultaneously in a single press stroke at one station — producing flatter, more dimensionally accurate blanks. Compound die is correct for 100 to 500 piece volumes where progressive tooling investment is not justified but dimensional consistency on the blank profile and hole pattern is required.

Deep drawing is a sheet metal forming operation that produces a 3D cup, box, or enclosure shell from a flat blank by pressing into a die cavity using a punch. The process is classified as deep drawing when the formed depth exceeds the part diameter. At Aero Enterprises Unit I, CR IS 513 DDQ (Deep Drawing Quality) grade is mandatory for deep drawing operations. Standard CQ or DQ grade will fracture or develop wall thinning at deep draw ratios. DDQ grade has a controlled microstructure specifically for severe plastic deformation without failure.

Aero Enterprises Unit I stamps CR IS 513 (CQ, DQ, DDQ grades), HR IS 2062, GI IS 277, SS 304, SS 316, aluminium, brass, and copper across a material thickness range of 0.5mm to 6.0mm. Grade is reviewed per operation type — DDQ grade is mandatory for deep drawing, DQ for tight-radius forming, CQ for standard blanking and piercing. All material enters production from JSW and TATA primary certified coils verified against Mill Test Certificates at Unit II Dhumal Nagar.

Power press stamping at Aero Enterprises Unit I achieves ±0.05mm to ±0.1mm on blank profile, hole diameter, and hole pattern centre-to-centre spacing. Punch-to-die clearance is maintained at 10–12% of material thickness per side for clean sheared edges and consistent hole geometry. First-off dimensional inspection using calibrated digital calipers, height gauges, and profile templates is performed on all critical dimensions before batch production is approved on every job.

Burr in sheet metal stamping is caused by excessive punch-to-die clearance or worn tooling. When clearance exceeds 12% per side, metal tears rather than shears cleanly, producing a raised burr on the exit face that fails downstream assembly and coating processes. At Aero Enterprises Unit I, burr height is monitored during hourly in-process batch sampling. Punch-to-die clearance is measured at defined intervals and tooling is replaced before the quality threshold is exceeded — not after a client rejection.

Aero Enterprises Unit I processes stamping orders from 100 pieces for compound die and single-stage operations. Progressive die stamping is economical from 500 pieces upward where tooling investment amortises across the production run. For prototype and design validation requirements, 3000W fiber laser cutting at Unit I produces first-off samples from DXF files on the same production day — without any tooling cost — allowing geometry confirmation before die investment is committed.

Sheet metal stamping is more economical than laser cutting above a volume threshold — typically 300 to 500 pieces for compound die and 500+ pieces for progressive die. Stamping also produces 3D formed features including embossing, deep drawing, notching, and restrike that laser cutting cannot. Laser cutting is correct for prototypes, short runs below 200 pieces, and complex profiles where die tooling investment is not justified by volume. At Aero Enterprises Unit I, both processes run on the same floor and the correct process is allocated per job based on volume, geometry, and total unit cost.