| 侯绪国,张晓军,张 衡,朱善平.工矿用全钢子午线轮胎胎侧起鼓机理分析及改善措施[J].轮胎工业,2023,43(6):0369-0372 |
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| 工矿用全钢子午线轮胎胎侧起鼓机理分析及改善措施 |
| Mechanism Analysis and Improvement Measures of Sidewall Bulge of All-steel Radial Tire for Engineering and Mining |
| 投稿时间：2022-06-01 修订日期：2022-06-01 |
| DOI：10.12135/j.issn.1006-8171.2023.06.0369 |
| 中文关键词: 工矿用全钢子午线轮胎 胎侧起鼓 胎体轮廓 机理分析 改善措施 |
| 英文关键词: all-steel radial tire for engineering and mining sidewallwall bulge carcass contour mechanism analysis improvement measure |
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| 中文摘要: |
| 分析了工矿用全钢子午线轮胎（简称工矿轮胎）胎侧起鼓的发生机理，并提出改善措施。工矿轮胎胎侧起鼓的原因主要有：花纹沟沟壁角度偏小，轮胎硫化时模具花纹沟挤压胎坯使花纹沟和花纹块位置胶料分布不均，导致胎体轮廓在花纹沟和花纹块位置形状不一致；轮胎成型时，有缝扇形块成型鼓的扇形块及其缝隙位置胎体帘线锁紧不一致，导致对应位置两钢丝圈之间的胎体帘线长度不一致；胎肩垫胶和胎圈填充胶的形状和尺寸不合适，胎肩处胎体轮廓曲率半径大，胎圈处胎体轮廓曲率半径小，轮胎充气时肩部变形大，加剧了花纹沟和花纹块位置胎体轮廓差异的影响。改善措施如下：在产品设计时增大花纹沟沟壁角度，减小模具花纹沟对胶料的挤压；采用无缝扇形块成型鼓生产，保证胎体帘线长度的一致性；优化胎肩垫胶和胎圈填充胶的形状和尺寸，减小胎肩处胎体轮廓曲率半径，增大胎圈处胎体轮廓曲率半径。经两种工矿轮胎使用验证，改善措施有效。 |
| 英文摘要: |
| The mechanism of sidewall bulge of all-steel radial tire for engineering and mining（referred to as engineering and mining tire） was analyzed，and the improvement measures were proposed.The main reasons for the sidewall bulge of engineering and mining tire were as follows：the angle of the pattern groove wall was too small，the mold pattern groove extruded the carcass during tire curing，resulting in uneven distribution of compound at the pattern groove and pattern block positions，and the shapes of the carcass contour at the pattern groove and pattern block positions were different.The carcass cord locking at the sector block and the gap between the sector blocks of the seam sector block forming drum were inconsistency during the tire forming，resulting in different carcass cord lengths between two bead rings at corresponding positions.The shapes and sizes of the shoulder pad and bead filler compound were not designed properly，the curvature radius of the shoulder carcass contour was large，the curvature radius of the bead carcass contour was small，and the shoulder deformation was large when the tire was inflated，which aggravated the influence of the difference in the carcass contour between the pattern groove and the pattern block positions.The improvement measures were as follows：increased the angle of the pattern groove wall in product design to reduce the extrusion of the mold pattern groove on the compound.Seamless sector block forming drum was used to ensure the consistency of the carcass cord lengthes.Optimized the shapes and sizes of shoulder pad and bead filler compound，reduced the curvature radius of shoulder carcass contour，increased the curvature radius of bead carcass contour.The application of two kinds of engineering and mining tires proved that the improvement measures were effective. |
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