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1.存在问题摊铺机分料器承担沥青混合料分料功能,我公司生产的摊铺机分料器箱体为钢板焊接件,其内部安装了链轮、轴承等零部件。为了便于清理分料器箱体内部的废弃润滑脂、加快清理速度,在其底部设置了大孔径细牙螺纹放油口,并安装了放油螺塞。但是经常有客户反馈,该放油螺塞使用几次后,因其细牙螺纹失效,放油螺塞无法紧固。2.原因分析该分料箱体为焊接结构件,按照加工工艺,放油口细牙螺纹安排在焊前加工,加工后安装塑料堵头进行防护,焊接完成后随箱体一起抛丸除锈和喷漆。分析认为,放油口大孔径细牙螺纹失效的原因有以下2个方面:一是在抛丸除锈过程中,
1. Existing problems Spreader sub-material to assume the role of asphalt mixture material, the company produced paver feeder box steel welded parts, the internal installation of the sprocket, bearings and other components. In order to facilitate the cleaning of the waste container inside the hopper grease, speed up the cleaning speed, set up at the bottom of the large-diameter fine thread drain port, and install the oil drain plug. However, there are often customer feedback, the use of the oil plug several times, because of its fine thread failure, oil drain plug can not be fastened. 2. Analysis of the reasons The sub-material box for the welded structural parts, in accordance with the processing technology, the fine mouth of the oil drain thread arrangement in the welding before processing, after the installation of plastic plugs for protection, together with the cabinet after welding shot blasting rust And spray paint. Analysis, the oil drain port large aperture fine thread failure due to the following two aspects: First, the shot blasting process,