We – EPG Team the bigge EPT Chain and agricultural gearbox factory in China with 5 diverse branches. For much more information: Cellular/whatsapp/telegram/Kakao us at: 0086~13083988828 13858117778 0571 88828
Sturdy Casting Steel Large Girth Gear for Ball Mill & Kiln
Process:
Forging/Casting
Normalizing&Tempering-Proof Machinnig
Quenching&Tempering
Finish Machining(Teeth Grinding)
We can offer you in various process conditions Solutions for Many End Markets and Applications
–Mining
–Metallurgy
–Power Generation
–Cement Plant
–Port Machinery
–Oil and all-natural
–Paper creating
–OEM gear case
–General Industrial
| Specification | Machining Scope |
| Size | OD Max 16m |
| One particular Piece of Gear: OD Max 13m | |
| Assemble Gear: In accordance to drawings | |
| Hobbing Modulus | ten-60 |
| Milling Modulus | Up to one hundred twenty |
| Spiral Modulus | 1-15 |
| Accuracy Quality | Milling: 6 grade |
| Hobbing: 8 quality | |
| Material | Alloy steel: 42CrMo4, 34CrNiMo6 etc. |
| Carbon steel: C45E, 1030 | |
| Carburizing steel | |
| Quenched and tempered steel | |
| Heat remedy | Quenching & Tempering, Surface area Quenching |
| Tooth Profile | Spur, Helical, Herringbone, Crown, Spiral, Worm and shaft |
Inspection and Test Outline of Girth Gear:
| No. | Item | Inspection Area | Acceptance Criteria | Inspection Stage | Certificates |
| 1 | Chemical Composition | Sample | Material Requirement | When Smelting After Heat Treatment |
Chemical Composition Report |
| 2 | Mechanical Properties | Sample(Test Bar on the Gear Body) | Technical Requirement | After Heat Treatment | Mechanical Properties Report |
| 3 | Heat Treatment | Whole Body | Manufacturing Standard | During Heat Treatment | Heat Treatment Report Curves of Heat Treatment |
| 4 | Hardness Test | Tooth Surface, 3 Points Per 90° | Technical Requirement | After Heat Treatment | Hardness Teat Report |
| After Semi Finish Machining | |||||
| 5 | Dimension Inspection | Whole Body | Drawing | After Semi Finish Machining | Dimension Inspection Report |
| Finish Machining | |||||
| 6 | Magnetic Power Test (MT) | Tooth Surface | Agreed Standard | After Finish Gear Hobbing | MT Report |
| 7 | UT | Spokes Parts | Agreed Standard | After Rough Machining | UT Report |
| After Welded | |||||
| After Semi Finish Machining | |||||
| 8 | PT | Defect Area | No Defect Indicated | After Digging After Welded |
PT Record |
| 9 | Mark Inspection | Whole Body | Manufacturing Standard | Final Inspection | Photos |
| 10 | Appearance Inspection | Whole Body | CIC’s Requirement | Before Packing (Final Inspection) |
|
| 11 | Anti-rust Inspection | Whole Body | Agreed Anti-rust Agent | Before Packing | Pictures |
| 12 | Packing Inspection | Whole Body | Agreed Packing Form | During Packing | Photographs |
Testing Process:
· QA DOC: Chemical Composition Report, Mechanical Properties Report, UT Report, Heat Treatment Report, Dimensions Check Report
· The data on chemical composition report and mechanical properties report are approved by third party, HangZhou Ship Material Research Institute, CSIC.
· UT test: 100% ultrasonic test according to EN15718-3, SA388, Sep 1921 C/c etc.
· Heat Treatment Report: provide original copy of heat treatment curve/time table.
The use of original gear manufacturer’s (OEM) part numbers or trademarks , e.g. CASE® and John Deere® are for reference reasons only and for indicating merchandise use and compatibility. Our company and the outlined replacement components contained herein are not sponsored, authorized, or created by the OEM.
