Welded and machined assembly in 45# steel and QT500 ductile iron for glass processing lines, finished with industrial paint.
Values below are the standard range keytrond holds for this part family. Tighter requirements are reviewed against the drawing before quotation.
| Tolerance range | IT8 - IT9, mounting faces ±0.1 mm |
|---|---|
| Surface roughness | Ra 3.2 on machined faces |
| Common materials | 45#, QT500-7 |
| Surface treatment | Painting, Primer coating, Machined faces |
| Machining processes | Welding, CNC Milling, Surface Finishing |
| Max machining size | 600 × 400 × 1500 mm |
| Applicable industries | Glass Machinery, General Automation |
| Minimum order | 2 pcs for sample, 30 pcs for batch |
| Lead time | Sample 6-9 days, batch 15-20 days |
| Drawing requirement | Please mark weld symbols, mating faces, hole positions, paint colour and any stress relief requirement. |
Glass processing lines run wet and carry abrasive dust, so the welded frames, brackets and guide supports on these machines are built from 45# steel and QT500 ductile iron. The weldment has to stay square after machining, otherwise the guide elements bind and the glass edge quality drops.
Each frame is cut, chamfered and tack welded in a fixture before final welding. The finished weldment is stress relieved, then the mounting faces and holes are milled in one clamping. After deburring, the part is primed and painted in the requested colour, with machined faces masked so they stay clean.
| Inspection item | Method and instrument |
|---|---|
| Weld bead size | Weld gauge, visual check on all seams |
| Mating face flatness | Surface plate and height gauge |
| Paint thickness | Film thickness gauge after curing |
A first article inspection report with dimensional results, material certificate and heat treatment record is provided for sample orders. Batch orders are sampled at 10 percent, with full inspection available on request.
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