Die casting frames with thickened plates and ribbed support, two-shot bases in turntable and reverse-stack configuration, and stamping die sets with ball-bearing guide pillars. Built to survive thermal cycling, not just the first trial shot.
A die casting base that is built like an injection base cracks at the sprue. A two-shot base without independent location misaligns on the second shot. The design has to match the process, not the catalogue.
Aluminium and zinc frames with thickened cavity and core plates, ribbed support pillars and generous cooling bores for thermal cycling.
Centre plate rotates 180° between shots: independent location, balanced cooling on both halves, and clearance for the rotation envelope.
Core-back or reverse-stack structure for compact mould height; second cavity formed by retracting core, suited to small and mid-size parts.
Progressive, compound and transfer die sets with four-pillar or ball-bearing guide systems, stripper plates and bolster machining.
Baffle and bubbler bores, conformal-lite drilling, thermal barrier grooves and sprue cooling machined into the frame.
Guide pillar and bush replacement, pocket re-machining and plate resurfacing for moulds already in production.
These are the design points we check on every die casting and two-shot enquiry, because they are where these moulds usually fail first.
| Item | Range / Standard | Notes |
|---|---|---|
| Cavity plate thickness | +15 % over an equivalent injection mould | Resists injection pressure and thermal gradient |
| Support pillars | Ribbed or increased count under the cavity | Limits plate deflection at temperature |
| Cooling bores | Ø8 – 14 mm main lines, baffles in cores | Thermal balance matters more than cooling speed |
| Die casting steels | H13, 8407, 1.2344; 1.2343 for high thermal load | Hardness 44 – 48 HRC after heat treatment |
| Two-shot location | Independent locating for the rotating half | Prevents drift on the second shot |
| Rotation clearance | Envelope checked against machine platen and tie bars | A 10 mm oversight stops the press |
| Stamping guide system | Ball-bearing pillars, H7 bores, perpendicularity ≤0.01/100 | Stability at 200+ strokes per minute |
| Inspection | CMM on bores, pockets and squareness; report with shipment | Dimensional record for rebuild reference |
Values are our routine capability, not a marketing ceiling. Anything outside the range goes through a technical review first — we confirm feasibility before quoting, and we do not promise what the machines cannot hold.
Die casting and two-shot jobs get an extra design gate compared with standard bases, because the cost of a wrong decision is a cracked plate in production.
Machine tonnage, shot weight, alloy, cycle time and, for two-shot, the rotation scheme. This decides plate thickness and support layout.
1–2 daysWe propose the support, cooling and ejection layout and return a marked-up drawing, so the plate is designed around the thermal load.
2–3 daysH13 / 8407 cut from certified stock, roughed, heat treated, then finished after hardness verification.
5–8 daysPockets, bores, cooling lines and rotation features machined and trial-fitted against the insert where supplied.
5–12 daysBores, pocket positions and squareness recorded; report and material certificates packed with the crate.
1–2 daysDie casting moulds fail from thermal fatigue, not from bad luck. Give us the process parameters and we will propose a plate and support design that matches the heat load, with the tolerance and the price stated up front.
Straight answers to the questions buyers actually ask before the first order.
Die casting and two-shot enquiries move fastest with the process parameters attached. The list on the left covers what our engineers need to size the base correctly the first time.
Mr. Ma (马总)
Mobile / WeChat: +86 138 2921 4701
Tel: +86 769 82986196
Email: sales@layjun.cn
No. 6 Dong’ao 3rd Road, Hengli Town, Dongguan, Guangdong, China
Working hours: Mon–Sat 08:00–20:00 (GMT+8)