在电力系统的搭建过程中，电缆桥架如同隐藏在建筑体内的 “血管”，承载着电缆线路的有序铺设与传输。然而，不少项目在桥架安装后，却发现金属表面出现明显折痕，这些看似不起眼的瑕疵，实则是桥架性能折损的预警信号。折痕不仅会削弱桥架的整体强度，还可能加速电缆表皮磨损，甚埋下隐患，而这一切问题的根源，往往始于初的选购环节。

　　In the construction process of the power system, cable trays are like "blood vessels" hidden inside the building, carrying the orderly laying and safe transmission of cable lines. However, many projects have found obvious creases on the metal surface after the installation of the bridge frame. These seemingly inconspicuous defects are actually warning signals of the performance damage of the bridge frame. Wrinkles not only weaken the overall strength of the cable tray, but may also accelerate the wear and tear of the cable skin, and even bury safety hazards. The root cause of all these problems often begins in the initial selection process.

　　从材料的本质来看，电缆桥架的折痕问题与材质优劣紧密相关。市面上一些低价桥架，为降低成本常采用回收废钢二次加工。这类钢材在冶炼过程中杂质难以完全，内部结构松散，如同掺了砂砾的混凝土，即便轻微挤压也易出现折痕。曾有某小型工程为节省预算选用低价桥架，运输途中仅因车辆颠簸，就导致桥架表面出现蛛网般的细微裂纹，安装后承载电缆时，折痕处更是发生明显凹陷。与之形成鲜明对比的是冷轧钢板，其含碳量精准控制，经过多道轧制工序，分子排列紧密有序，如同紧密编织的钢网，能承受更大的外力冲击，在运输和安装过程中始终保持结构完整性。

　　From the essence of materials, the issue of creases in cable trays is closely related to the quality of the material. Some low-priced bridge frames on the market often use recycled scrap steel for secondary processing to reduce costs. This type of steel is difficult to completely remove impurities during the smelting process, and its internal structure is loose, like concrete mixed with gravel. Even slight compression can easily cause creases. A small project once chose low-priced cable trays to save budget. However, during transportation, due to vehicle bumps, the surface of the tray showed spider like tiny cracks. After installation, when carrying cables, there were obvious indentations at the creases. In sharp contrast, high-quality cold-rolled steel plates have precise control over their carbon content. After multiple rolling processes, the molecular arrangement is tightly and orderly, like a tightly woven steel mesh, which can withstand greater external impact and maintain structural integrity during transportation and installation.

　　制作工艺的差异，同样是造成折痕的重要因素。缺乏设备的小工厂，在桥架成型时多依赖人工操作或老旧冲压机。工人操作力度的细微偏差，或是冲压机压力不均，都会使金属板材受力失衡，就像用钝刀裁纸会出现毛边一样，折痕随之产生。而成熟的生产厂家，采用数控折弯技术，通过计算机精确控制折弯角度与压力，误差可控制在毫米级以内。以梯形桥架的斜边加工为例，设备能让金属板材在弯折过程中均匀受力，确保成型后的桥架棱角分明且表面平整。同时，配套的自动化焊接工艺，还能使桥架各部件衔接处牢固且光滑，进一步提升整体品质。

　　The difference in production process is also an important factor causing creases. Small factories lacking professional equipment often rely on manual operation or outdated stamping machines when forming bridge frames. Minor deviations in worker operation force or uneven pressure on stamping machines can cause metal sheets to experience unbalanced stress, just like how cutting paper with a blunt knife can result in burrs and creases. Mature manufacturers use CNC bending technology to precisely control the bending angle and pressure through computers, with errors controlled within millimeters. Taking the oblique edge processing of trapezoidal bridge as an example, advanced equipment can ensure that the metal sheet is uniformly stressed during the bending process, ensuring that the formed bridge has sharp edges and a flat surface. At the same time, the supporting automated welding process can also ensure that the joints of various components of the bridge are firm and smooth, further improving the overall quality.

　　面对市场上琳琅满目的电缆桥架，掌握科学的选购方法关重要。外观检查是直观的筛选方式，可随身携带强光手电筒，仔细照射桥架表面，微小的折痕、砂眼在强光下会无所遁形；用指甲轻刮表面，若涂层轻易剥落，说明防腐工艺不过关，长期使用易生锈腐蚀。在承重测试方面，可要求供应商提供模拟承重视频或数据报告，了解不同规格桥架在满负荷状态下的形变程度。曾有数据显示，不符合标准的桥架在承载额定重量 80% 的电缆时，就出现了明显下沉，而桥架即便承载 120% 的重量，也能保持稳定。此外，实地考察供应商的生产车间也很有必要，观察其原材料堆放是否规范、加工设备是否、质检流程是否严格，从源头把控产品质量。

　　Facing the dazzling array of cable trays in the market, it is crucial to master scientific purchasing methods. Visual inspection is the most intuitive screening method. You can carry a strong flashlight with you and carefully shine it on the surface of the bridge. Small creases and sand holes will be exposed to strong light; Gently scratch the surface with your nails. If the coating easily peels off, it indicates that the anti-corrosion process is not up to standard and long-term use is prone to rust and corrosion. In terms of load-bearing testing, suppliers can be requested to provide simulated load-bearing videos or data reports to understand the degree of deformation of different specifications of cable trays under full load conditions. There have been data showing that cable trays that do not meet the standards experience significant sinking when carrying 80% of the rated weight of cables, while high-quality cable trays can maintain stability even when carrying 120% of the weight. In addition, it is necessary to conduct on-site inspections of suppliers' production workshops to observe whether their raw material stacking is standardized, whether their processing equipment is advanced, and whether their quality inspection processes are strict, in order to control product quality from the source.

　　值得注意的是，电缆桥架的使用环境也会影响其折痕产生的概率。在高温潮湿的地下管廊，桥架易因热胀冷缩和腐蚀出现变形；在震动频繁的工业厂房，持续的机械震动会加剧金属疲劳。因此，需根据实际环境选择具备相应防护性能的桥架，如耐腐蚀的热浸锌桥架、抗震性能强的加强型桥架。同时，与供应商签订明确的售后条款也不可或缺，确保在出现折痕等质量问题时，能及时得到解决方案。

　　It is worth noting that the usage environment of cable trays can also affect the probability of creases. In high-temperature and humid underground pipe galleries, cable trays are prone to deformation due to thermal expansion, contraction, and corrosion; In industrial plants with frequent vibrations, continuous mechanical vibrations can exacerbate metal fatigue. Therefore, it is necessary to select cable trays with corresponding protective performance according to the actual environment, such as corrosion-resistant hot-dip galvanized cable trays and reinforced cable trays with strong seismic performance. At the same time, it is essential to sign clear after-sales terms with suppliers to ensure timely solutions in case of quality issues such as creases.

　　选购电缆桥架并非简单的商品，而是对整个电力系统的长远投资。只有深入了解产品材质与工艺，掌握的选购技巧，结合实际使用需求，才能选到坚固耐用的桥架，为电缆铺设筑牢防线，彻底杜绝折痕带来的后续隐患。

　　Choosing cable trays is not a simple commodity transaction, but a long-term investment in the safety of the entire power system. Only by deeply understanding the material and process of the product, mastering comprehensive purchasing skills, and combining them with actual usage needs, can we choose sturdy and durable high-quality cable trays, build a strong safety defense line for cable laying, and completely eliminate the subsequent hidden dangers caused by creases.

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