HOME- Process
- Process Control
Process Control
| Process | Parameter | Procedure No. | ||
|---|---|---|---|---|
| Bar Cutting | Length in accordance with the size | DES-E-M-100 | ||
| Bar Heating | Temperature(Furnace atmosphere) | DES-E-M-101 | ||
| Bending | Surface condition, Temperature, C-clamp distance | DES-E-M-102 | ||
| Flash Butt Welding | Chain diameter, Initial grip separation, Flash length and Flash speed, Upset length and speed, Minimum upsetting speed, Set-up tap for secondary voltage(Welding voltage), Cooling time, Upsetting/Clamping power, Power cutting point during upsetting, Acceleration before the start of the upsetting, Mean current / Control of upper limit for set-up current Surface Condition | DES-E-M-103 | ||
| Trimming | Welded surface condition, Control of cutting knife | DES-E-M-104 | ||
| Stud Inserting | Link dimension, Stud setting point, Stud shape | DES-E-M-105 | ||
| Stud Welding | Current , Voltage, Beaded width, Qualified welder | DES-E-M-106 | ||
| Heat Treatment | Temperature(Furnace atmosphere, Cooling water), Travel speed | DES-E-M-107 | ||
| Proof Load Test | Required load, Surface crack | DES-E-M-105 | ||
| Dimension Check | Length of five link, Total length, Links dimension check, Visual inspection | DES-E-M-112 | ||
| Non-destructive Examination |
UT : Phased array type , MPI : Yoke type, Fluorescent magnetic particles, Qualified procedure and inspector (Level Ⅱ & Ⅲ) |
DES-E-M-105 | ||
| Breaking Load Test | Required load, Surface crack, Abnormal breaking, Holding time (30s) | MAP-002 | ||
| Mechanical Test | Tensile strength, Yield strength, Elongation, Reduction of area, Absorbed energy (Parent/Weld/Bend part) | DHAC-NDT-U- 001C DHAC-NDT-M-002C |
||
| Painting | Surface condition, Thickness (Thickness in accordance with the customer requirement) | DES-E-M-108 |
