problem:
Slug Lifting and Cutting Clearance Corrections
Cold-Welding
Cutting-Edges Blunting
solution:
wocafix the matrix
wocafix outside of the punch
wocafix faces of punch and matrix
problem:
Scuffing, cold-welding and excessive wear
solution:
wocafix wear-prone parts
Defects: | Punching burrs, punching off - cuts rise up |
Coating: | All die apertures |
Refinishing: | none |
Result: | Punching burrs removed, off - cuts remain in die |
Service life: | Increased to 220% |
Defects: | Cold welding on bending jaws, cut - offs rise up |
Coating: | Bending jaws radii and die apertures |
Refinishing: | Light repolishing of bending jaws |
Result: | Clean bending parts, cold welding and rising up of cut - offs avoided |
Service life: | Increased to 280% |
Defects: | Cold welding and cracking of the material |
Coating: | Bending radii and embossing contours |
Refinishing: | Repolishing of radii and contours |
Result: | Material flows better, no more cracking and cold welding |
Service life: | Increased to 650% |
problem:
Cold-welding and scuffing of drawing or forming radii
Groove Formation
solution:
wocafix the radii
wocafix those areas producing insufficient pressure
Problem: | Corrosion on drawing die, poor flow |
Coating: | Radius on drawing ring |
Refinishing: | Fine polishing of radius |
Result: | Corrosion eliminated, material flows better, cleaner surface |
Service life: | Increased to 530% |
Defects: | Sticking and cracking open of material |
Coating: | Die aperture |
Refinishing: | Light refiling with diamond file |
Result: | Even flow of material, less pressure, no alteration in size when cleaning |
Service life: | Increased to 750% |
Defects: | Corroded stamping radius, material sticking |
Coating: | Stamping radius and drawing edge |
Refinishing: | Fine lap coating |
Result: | Corrosion and sticking avoided, better flow of material |
Service life: | Increased to 600% |
Defects: | Abrasion of the edges and extrusion points |
Coating: | Extrusion channels and mold edges |
Refinishing: | Smooth edges with diamond file |
Result: | Good injection, edge strength |
Service life: | Increased to 250% |
Defects: | Erosion of injection channel and surface |
Coating: | Injection channel and surface |
Refinishing: | Light polishing |
Result: | Erosion avoided, as also spraying - on point |
Service life: | Increased to 300% |
Defects: | Wearing of edges and breaking of the die |
Coating: | head and aperture |
Refinishing: | none |
Result: | Better ejection, less wearing of the edges and consequently no breaking |
Service life: | Increased to 480% |
Defects: | Intense wearing leading to undersize |
Coating: | Plain grinding - bevel |
Refinishing: | lap in drilling or grind to size |
Result: | True - to - size again, abrasion - proof |
Service life: | Increased to 650% |