MICRO‑TIG UNDER THE MICROSCOPE • TOOL STEEL REPAIR
Injection mold & tool steel
micro‑TIG that disappears
EVS Precision Welding focuses on microscopic TIG repair of high‑value tooling: injection molds, cores, cavities, and precision steel components where distortion, undercut, and heat‑affected zone actually matter.
Micro‑TIG under 10× magnification
H13 • S7 • P20 • 420SS
Tight heat control • Minimal sink
Process focus
Micro‑TIG on tool steels only. No production fab, no
structural frames—just precision repair work on hardened tooling where
the weld has to blend, machine, and polish like it was never there.
Typical work
- Edge rebuilds on cores and cavities
- Shutoff repair and mismatch correction
- Gate relocation and detail add‑ons
- Micro‑features and EDM‑ready buildup
Tolerances & approach
Welds are placed under magnification with tight control
of heat input, bead size, and dilution. The goal is simple: give your
machinist and polisher something they can trust.
Process overview
Built around tool rooms, not fab shops
1 • Intake
Photos, prints, steel type, hardness, and how the tool runs. The more
context you give, the better the weld strategy.
2 • Weld plan
Bead size, sequence, and filler selection are chosen to minimize sink,
distortion, and post‑weld surprises.
3 • Execution
Micro‑TIG under the microscope with controlled gas coverage and heat
input, aimed at clean machining and polishing downstream.
Materials & capability
Tool steels, stainless, and mold‑grade alloys
Tool steels
H13, S7, P20, 420SS, and common mold steels. Focus on matching weld
behavior to the parent material for machining and polish.
Scale & access
Micro‑features, thin edges, and tight pockets where a normal TIG torch
is too blunt or too hot.
Environment
Clean, controlled setup with dedicated micro‑TIG equipment tuned for
low‑amp stability and precise gas coverage.