Transactions of Materials and Heat Treatment

Title：Remanufacturing technology and application of heavy-duty wire-wound extrusion cylinder

Authors： Qin Ruiting1 Meng Keke2 Liu Zhengwei1 Liu Yaxin1 Gao Ru1 Lei Bingwang1

Unit： 1. Inner Mongolia North Heavy Industries Group Corp.Ltd. 2. College of Mechanical Engineering Inner Mongolia University of Science & Technology

KeyWords： wire winding extrusion cylinder press-fitting remanufacturing heavy-duty extrusion cylinder

ClassificationCode：TG375+.4

year,vol(issue):pagenumber：2025,50(3):189-196

Abstract：

As a key die tooling in the hot extrusion process of large-diameter difficult-to-deform alloy pipes，the heavy-duty wire-wound extrusion cylinder has a multi-layer combined structure ,where the innermost liner is the working component and the outer cylinder is reinforced with pre-stressed steel wires. Crack failure occurred in the inner liner of the extrusion cylinder after long-term use. For the problems of high cost and extended downtime associated with the conventional disassembly-based repair methods, an innovative press-fit remanufacturing methodology, which involved pressing a new inner liner into the failed extrusion cylinder, was developed. Finite element simulation was employed to validate the feasibility of efficient liner replacement in pre-stressed wire-wound extrusion cylinder. Press-fitting was conducted using a 36,000-ton vertical extrusion press, where a pressing force of 4,030 ton was measured under an interference amount of 0.63 mm between the new inner liner and the middle liner of extrusion cylinder. The remanufactured extrusion cylinder remained fully operational after extruding 2,000 seamless steel pipes, which confirmed the feasibility of remanufacturing technology for the extrusion cylinder.

Funds：

国防基础科研计划（JCKY2022208A002）

作者简介：秦瑞廷（1986-），男，硕士，高级工程师 E-mail：842810041@qq.com 通信作者：孟可可（1986-），男，硕士，副教授 E-mail：mengkk@imust.edu.cn

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