Hot Forging Die Punch

Name: High-Temperature Forging Die Punch – Frigate
Price: 249.00 USD
Availability: InStock

Hot Forging Die Punches are subjected to repeated rapid heating and cooling cycles that initiate surface and sub-surface cracks. Thermal fatigue resistance is enhanced through the use of high hot-yield-strength tool steels such as ESR-grade H13 or H21, combined with controlled tempering at secondary hardening peaks. Microstructural refinement and uniform martensitic transformation delay crack propagation, ensuring stable tool performance across prolonged forging cycles.

Material Specification

H13 (DIN 1.2344), H21, QRO-90 Supreme, Nimonic 80A (for nickel alloys)

Hardness (HRC)

42-48 HRC (H13 at working temp), 38-42 HRC (H21), 44-48 HRC (QRO-90)

Surface Finish (Ra/RMS)

Working Surface – 0.4-0.8 µm, Side Walls – 0.8-1.6 µm, Non-Critical – 1.6-3.2 µm

Dimensional Tolerances

Profile – ±0.05 mm, Critical Features – ±0.02 mm, Overall Height – ±0.1 mm

Punch Profile Geometry

As per 3D CAD Model (STEP/IGES) with ±0.01 mm hot-forging allowance

Product Description

Hot Forging Die Punches operate under high axial and radial forces, often exceeding 1000 MPa in closed-die applications. Through-hardened core structure with low retained austenite and uniformly distributed carbides provides exceptional dimensional stability. Optimized temper backstops compressive deformation, while residual stress balancing prevents punch head mushrooming under peak loads.

Draft Angles and Radii

Draft – 1°-3° (per side), Transition Radii – 2-5 mm (min), Corner Radii – 5-10 mm

Mounting/Retention Features

Shank Diameter – h6 tolerance, Shoulder Flatness – 0.02 mm/m, Bolting – M12-M24 (Class 10.9)

Cooling Channel Design

Diameter – 10-16 mm, Pitch – 40-60 mm, Temp Control – ±5°C, Flow Rate – 15-20 L/min

Coating/Surface Treatment

Plasma Nitriding (0.1-0.3 mm), AlCrN Coating (for aluminum), EDM Glazing (for steel)

Certification Standard

NADCA #207-2003, ISO 9001, AMS 2759 (Heat Treatment), DIN EN ISO 4957 (Tool Steel)

Technical Advantages

Hot Forging Die Punches frequently encounter adhesion issues during high-temperature metal flow, especially when forming carbon and alloy steels. Surface-engineered layers such as duplex PVD (AlTiN or CrAlN) coatings or nitrided zones create high-surface-hardness barriers with low chemical affinity. These treatments reduce diffusion bonding and metal pickup, thereby preserving punch geometry and surface finish over extended production cycles.

Prolonged exposure to forging temperatures above 1100°C leads to hardness degradation and mechanical property loss. Hot Forging Die Punches are manufactured from steel compositions with high temper resistance and strong secondary hardening effects. Fine alloying with molybdenum and vanadium forms stable carbides that prevent microstructural over-tempering, maintaining core and surface hardness during prolonged hot working conditions.

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Industry Applications

Aerospace Turbine Shafts

Applied in shaping high-strength superalloy shafts where thermal resistance and punch stability are critical under forging temperatures above 1000°C.

Railway Axles and Wheel Hubs

Utilized in hot forming of large-diameter axles and hubs where deep penetration and wear-resistant punches are essential.

Heavy-Duty Fasteners and Bolts

Deployed for forging high-strength bolts and fasteners with uniform grain flow and minimal die wear over high-volume production.

Agricultural Equipment Spindles

Used in producing forged spindles requiring consistent metallurgical properties and repeatable dimensions over extended forging cycles.

Oil & Gas Valve Bodies

Employed in forming closed-die valve bodies from stainless and duplex steels under high thermal and mechanical stresses.

Construction Machine Gears

Applied in shaping planetary and bevel gears used in heavy machinery, demanding high-impact toughness and thermal fatigue resistance.

Low Wear Rate at Tool-Workpiece Interface

Severe abrasive wear at the punch-nose interface reduces functional life. Hot Forging Die Punches achieve lower wear rates through uniform carbide distribution, improved surface finish (Ra < 0.2 µm), and optional cryogenic processing. These features enhance wear resistance during extended sliding and impact under hot deformation loads, especially in medium-to-high carbon steels.

Hot Forging Die Punches used in automated high-volume production must retain tolerances over thousands of cycles. Multi-zone heat treatment and sub-zero stabilization eliminate distortion during quenching and tempering. Geometrical integrity is further maintained using pre-machining allowances and post-hardening finish grinding to within ±5 µm profile accuracy.

Having Doubts? Our FAQ

Check all our Frequently Asked Question

How does Frigate ensure thermal fatigue resistance in Hot Forging Die Punches?

Frigate uses ESR-grade H13 and H21 tool steels with high molybdenum and vanadium content to resist thermal cracking. Controlled austenitizing and triple tempering improve microstructural stability. Temper resistance is maintained even beyond 600°C operational range. This ensures extended life under cyclic heating conditions.

What machining tolerances does Frigate maintain in Hot Forging Die Punches?

Frigate machines die punches to profile accuracy within ±5 microns using high-precision CNC grinding. Pre-hardening and post-treatment stabilization ensure dimensional integrity. Final inspection uses coordinate measuring machines (CMM) for critical areas. This reduces mismatch and flash issues during forging.

How does Frigate enhance adhesion resistance on punch surfaces?

Frigate applies duplex surface treatments such as nitriding followed by PVD AlTiN or CrN coatings. These layers reduce sticking with carbon and alloy steels. Surface hardness exceeds 2500 HV, minimizing galling and pick-up. This improves surface finish of forged components.

How does Frigate control distortion during heat treatment of die punches?

Frigate uses stress-relief annealing and slow heating rates before austenitizing to reduce internal stresses. Punches are fixtured during quenching to maintain straightness. Sub-zero treatment removes retained austenite. The process ensures high dimensional repeatability in production environments.

Can Frigate customize Hot Forging Die Punches for high-tonnage presses?

Frigate designs die punches to handle load profiles exceeding 4000 tons, using high-compression-strength tool steels. Geometry and head design are tailored to absorb impact without mushrooming. Finite Element Analysis (FEA) is used during design validation. This enables reliable use in automated, heavy-load forging cells.

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LOCATIONS

Registered Office

10-A, First Floor, V.V Complex, Prakash Nagar, Thiruverumbur, Trichy-620013, Tamil Nadu, India.

Operations Office

9/1, Poonthottam Nagar, Ramanandha Nagar, Saravanampatti, Coimbatore-641035, Tamil Nadu, India. ㅤ

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