| Application of 3＋9＋15×0. 225ST Steel Cord in Carcass of Truck and Bus Radial Tire |
| Received:November 02, 2021 Revised:November 02, 2021 |
| DOI：10.12136/j.issn.1000-890X.2022.12.0921 |
| Key Words: truck and bus radial tire；steel cord；carcass；fatigue resistance；durability；service life |
| Author Name | Affiliation | E-mail | | ZHU Lixin | Shandong Changfeng Tyres Co.，Ltd | 284900547@qq.com | | FENG Xinglin | Shandong Changfeng Tyres Co.，Ltd | | | XU Haitao | Shandong Daye Co.，Ltd | | | PAN Lei | Shandong Daye Co.，Ltd | | | CANG Junxiang | Shandong Daye Co.，Ltd | | | CHEN Liqiang* | Shandong Daye Co.，Ltd | 284900547@qq.com |
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| Abstract: |
| The application of 3＋9＋15×0. 225ST steel cord in the carcass of truck and bus radial tire
was investigated. The results showed that compared with 3＋9＋15×0. 22＋0. 15NT steel cord，the breaking
force of 3 ＋ 9 ＋ 15×0. 225ST steel cord increased by 30%，the stiffness increased by 24%，and the fatigue
resistance was significantly improved.By using 3＋9＋15×0. 225ST steel cord to replace 3＋9＋15×0. 22＋
0. 15NT steel cord in the carcass of truck and bus radial tire，the damage energy and durability of tire were
improved，and the service life was prolonged. |
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