Forging hook tongue - no weight reduction groove
update£º2016-11-28 09:59 Click£ºtimes
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Forging hook tongue - no weight reduction groove Introduction of main performance index name Maximum permanent deformation (mm) at 2045kN loading Minimum ultimate load (KN) Strength requirement 0.8 3940 Product category main parameter X£¨mm
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Forging hook tongue - no weight reduction groove
Introduction of main performance index
| name | Maximum permanent deformation (mm) at 2045kN loading | Minimum ultimate load (KN) |
| Strength requirement | 0.8 | 3940 |
| Product category | main parameter | |||
| X£¨mm£© | Y£¨mm£© | Z£¨mm£© | Weight (kg) | |
| Rio Tinto forging hook tongue | 225 | 279.4 | 297 | 50 |
| Mechanical properties | |||||
| Yield strength | tensile strength | Elongation rate | Section shrinkage | hardness | To attack |
| V- type gap£¨-40¡æ£© | |||||
| (MPA) | (MPA) | % | % | (HB) | (J) |
| ≥800 | ≥950 | ≥14 | ≥30 | 270¡«320 |
≥45 |
1 forging material: 25MnCrNiMoA
2 induction heating
3 grain size is not less than 6
4 non metallic inclusions maximum grade 2
5 no Widmanstaten
6 heat treatment: normalizing + tempering
7 the surface of the forging is not allowed to crack, fold.
8 forgings are not allowed.
9 ultrasonic testing and magnetic particle testing
The remaining 10 with AAR M-201 and AAR M-211 "Steel Castings" AAR "coupler yoke, procurement and acceptance of technical conditions".
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