- JADCO Manufacturing, Inc.
- 167 Evergreen Mill Road
- Harmony, PA 16037
- Phone: 724-452-5252
- Fax: 724-452-1318
QT Plus© - Why Specify?
Fabrication Facts
Drilling: QT-PLUS is inherently tougher to drill than T1 or AR400; using the proper methods, however, it is easily machined. Work stock should be as rigid as possible, and colbalt or sintered carbide bits provide the best tool life between dressings. A short shank, two-fluted bit works best with negative rake. A 135-degree to 150-degree tip angle with 6-degree edge clearance and 20 SFPM works well.
Welding: Rods should be dry-welded on a moisture free surface. Preheat is preferred to reduce thermal stock (250-degree is a rule of thumb). Use E7018 or E8018 weld rod. If no preheat is possible, a 309 stainless rod is preferred. Welds in restraint should be avoided. Carbon equivalent = .667
Flame Cutting: QT-PLUS is easily flame cut with oxy-acetylene or plasma. Hardening will occur at the edge of the cut, and is beneficial to pre-heat before flame cutting (400 degrees) or allow enough stock to get below the hardened edge. Note: At JADCO, we burn with plasma, and the material is under water to decrease distortion of the heat-affected area.
Bending: QT-PLUS is cold formable with the proper equipment. The material’s toughness allows it to be rolled or formed for almost any application. We recommend 8T across the grain and 12T with the grain. Transverse to the grain is preferred.
