Services
Forging
Forging Services
High-strength metal components produced by open-die, closed-die, and ring-rolling forging with integrated heat treatment and CNC machining.
About Our Forging
Leesh Holdings provides end-to-end forging solutions for demanding applications in automotive, construction, mining, energy, marine, and heavy equipment. Our process delivers superior grain flow, impact resistance, and fatigue life compared to cast or fabricated parts.
Why Choose Our Forging?
- Mechanical Performance: Refined grain flow and dense structure for high strength and toughness.
- Process Coverage: Open-die, closed-die (impression-die), upset forging, and ring rolling.
- One-Stop: Die design, forging, heat treatment, rough/finish machining, surface treatment, inspection.
- Quality Assurance: ISO 9001 system, full traceability, destructive and non-destructive testing.
Technical Capabilities
| Feature | Specification |
|---|---|
| Processes | Open-die, Closed-die (impression), Upset, Ring rolling |
| Materials | Carbon & alloy steels (e.g., 1045, 4140, 4340), stainless steels (304/316/410), aluminum (2xxx/6xxx/7xxx), copper/brass/bronze; titanium on request |
| Max weight | Open-die up to ~8,000 kg; closed-die up to ~150 kg; rings up to OD ~3,000 mm |
| Max size | Bars/shafts up to ~8,000 mm length (process dependent) |
| Tolerances | As-forged ISO 8062 CT6–CT9 (geometry dependent); finish tolerances to drawing after machining |
| Heat treatment | Normalize, Q&T, solution & aging (Al), anneal, stress relieve, sub-zero (on request) |
| Surface | Shot blasting, machining, coating/painting, anti-corrosion treatments |
| Testing | Chemical analysis, tensile/impact/hardness, grain flow macro-etch; NDT: UT/MT/PT |
| Machining | CNC turning/milling, deep-hole drilling, grinding; CMM inspection |
Typical Applications
- Crankshafts, connecting rods, gears, pinions
- Hubs, flanges, rings, bearings
- Mining picks, hammer heads, track links
- Valve bodies, fittings, couplings
- Wind, oil & gas, and marine hardware
Process Flow
- Engineering & DFM – Material grade, die/blank design, grain flow planning
- Die & Tooling – Impression die design & fabrication (where applicable)
- Heating & Forging – Controlled billet heating; multi-step forging for shape & flow
- Trimming & Normalizing – Flash removal and initial heat treatment
- Final Heat Treatment – Q&T/solution-aging per spec; property verification
- Machining & Finishing – Rough/finish machining, surface treatment
- Inspection & Delivery – NDT, mechanical testing, dimensional reports, packaging
FAQ
When should I choose forging over casting?
Choose forging when you need superior mechanical properties, fatigue resistance, and structural integrity—especially for safety-critical or high-load parts.
What drawings/data are needed for a quote?
3D/2D drawings (STEP/IGES + PDF), material grade & standard, estimated quantity, property requirements, heat treatment, and any machining notes.
Do you provide full machining?
Yes. We can supply rough-forged blanks, near-net forgings, or fully machined parts to print.
Request a Quote
Please include: drawings, material grade/standard, annual usage, mechanical properties, heat treatment, NDT level, machining & surface requirements, delivery terms.
