Segmented Dies
Multi-Station Carbide Cold Heading Dies for Bolts
Multi-station carbide cold heading dies for bolt forming lines. Jungu checks station sequence, carbide support, shrink fit, blank volume, and crack pattern before quoting.
What is Multi-Station Carbide Cold Heading Dies for Bolts used for?
Multi-station carbide cold heading dies for bolts are used across progressive forming steps where each station changes material flow and load direction. The die cannot be reviewed as a single insert. A cracked carbide core at station three may be caused by blank volume error at station one, poor transfer alignment at station two, or insufficient steel support around the carbide. Jungu reviews the full station layout, part drawing, blank diameter and cut length, fastener material, forming sequence, carbide grade, shrink-fit structure, die case support, and photos of cracks, chipping, fold marks, or off-center heads. This page is for buyers who need a coordinated station-by-station tooling review rather than one isolated replacement die. We also check whether the tool-life target is limited by design, upstream blank preparation, or actual material variation.
Common sourcing use
Progressive bolt cold heading where station sequence, blank volume, carbide support, and transfer alignment decide die life.
Related product families
Technical Review Scope
What Jungu checks
- Part drawing, station layout, forming sequence, reduction ratio, and target dimensions
- Blank diameter, cut length, material grade, wire hardness, lubrication, and volume stability
- Carbide grade, shrink fit, die case support, corner radius, and load direction
- Failure evidence: radial crack, edge chip, fold mark, off-center head, transfer scratch, or short life
Why no standard price is shown
This is B2B custom tooling. A reliable quotation depends on drawing, material, size, tolerance, machine setup, annual quantity, and the mould-life issue the buyer wants to solve. Jungu quotes after technical review instead of showing a misleading fixed price.
Information Needed for Quotation
| Station data | Station-by-station drawing or photos, target form, reduction, and current die sequence. |
|---|---|
| Blank and wire | Blank diameter, cut length, wire material, hardness, lubrication, and feed condition. |
| Support structure | Carbide grade, shrink-fit design, die case dimensions, support ring, and assembly photos. |
| Failure pattern | Photos of crack path, fold marks, head eccentricity, transfer scratches, or worn carbide edges. |
Application and Buyer Fit
| Typical application | progressive bolt cold heading where station sequence, blank volume, carbide support, and transfer alignment decide die life |
|---|---|
| Buyer review focus | station layout, blank volume, carbide support, die case fit, transfer alignment, material grade, and crack or fold pattern |
| Quotation basis | drawing, material, tolerance, machine model, quantity, and target tool life |
| Review output | a station-matched carbide die route with support, shrink-fit, material flow, and inspection points reviewed together |
Inquiry Process
- Send drawings and application details.
- Jungu reviews manufacturability and tooling route.
- Engineering confirms material, tolerance, and mould-life target.
- Quotation and lead time are prepared after technical confirmation.
FAQ
Can Jungu quote only the broken station?
Yes, but the review is safer when earlier station drawings and blanks are included because the final crack may start upstream.
Why does carbide crack even when hardness is correct?
Carbide fails from impact, poor support, radius stress, wrong shrink fit, or off-center load, not only from material hardness.
What is the most useful failure evidence?
Send the cracked die, the failed fastener, station position, and photos of upstream semi-formed blanks.
Can this product be customized?
Yes. Jungu manufactures fastener mould tooling according to buyer drawings, samples, and machine requirements.
Need this tooling reviewed?
Send drawings, machine model, material, and current failure photos for review.