关键词: 工业工程；时间研究；宽放率；线平衡；瓶颈工序

Abstract: The production line balance rate is one of the important indicators to measure the efficiency of the assembly line. Each assembly line has the problem of imbalance, which to some extent affects the competitiveness and profitability of the enterprise. This article analyzes the production and assembly process of heavy-duty trucks, with a focus on using the basic methods of industrial engineering to determine the time for on-site operations. By combining the width ratio and evaluation coefficient, standard time for each process is formulated and calculated. The bottleneck process of the assembly and welding line is identified using the line balance method, and effective improvement measures are proposed. By balancing the workload of each process, waste is eliminated, and the line balance rate is improved, improved the efficiency of production line operations.

Key words: Industrial engineering; Time study; Wide amplification rate; Line balance; Bottleneck process