{"id":10876,"date":"2024-10-25T16:56:17","date_gmt":"2024-10-25T08:56:17","guid":{"rendered":"https:\/\/www.ray-tron.com\/?p=10876"},"modified":"2024-10-25T16:56:17","modified_gmt":"2024-10-25T08:56:17","slug":"clc0014","status":"publish","type":"post","link":"https:\/\/www.ray-tron.com\/en\/clc0014\/","title":{"rendered":"Explanation of the technical process of producing rail copper strips"},"content":{"rendered":"

The process of producing track copper strips requires high precision and meticulous control. Track copper strips are generally used in rail transportation such as railways, subways, and light rails. As conductive strips and contact strips, they have high requirements for the conductivity, wear resistance, and stability of the product. The following are the key process steps for the production of track copper strips:<\/p>\n

1. Raw material selection<\/strong><\/p>\n

Choose high-purity, high-conductivity copper materials. Usually oxygen-free copper or red copper is used, and the impurity content is required to be extremely low to ensure excellent conductivity and ductility.<\/p>\n

Pre-treatment of raw materials, including surface cleaning and removal of oxide layers, to avoid surface defects during subsequent processing.<\/p>\n

2. Precision rolling<\/strong><\/p>\n

Multi-pass rolling: The thickness and width of the copper strip are controlled by a multi-pass step-by-step rolling process. Using a four-pass rolling mill or a six-pass rolling mill can achieve higher thickness uniformity.<\/p>\n

Progressive cold rolling: The thickness is reduced less each time, and the required accuracy is gradually achieved, which can effectively avoid cracks or breaks caused by stress concentration.<\/p>\n

Real-time thickness detection: The online laser thickness gauge monitors the thickness during the rolling process in real time and automatically adjusts the rolling pressure to ensure uniform thickness.<\/p>\n

3. Intermediate annealing treatment<\/strong><\/p>\n

Annealing eliminates rolling stress, so that the copper strip still maintains flexibility and tensile strength after multiple rolling passes.<\/p>\n

Annealing is performed in a protective atmosphere (such as hydrogen or nitrogen) to prevent oxidation of the copper strip surface. The temperature and time must be strictly controlled to ensure annealing uniformity.<\/p>\n

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