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在设备修理或水暖设施及管道的修理中,大型密封圈的制作既费料,又难加工.可采取粘接的方法进行制作,比较方便.一、夹板的制作首先将石棉胶板套裁成四个90°的1/4圆圈,或两个180°的半圆圈,并留好接口.粘接后的密封性能好坏,关键在于搭接口处角度的大小及其斜面的光滑程度.角度大,则粘接面积小,易拉断,密封性差,易造成漏液、漏气;角度小,粘接面积大,强度高,装配时不易拉断,但制作较复杂.实践证明,其角度在18°左右时密封性较好.为了保证粘接面平滑、吻合,粘接后牢固、密封,需要制作切削斜面的夹具,如图1.
In the equipment repair or plumbing facilities and pipe repair, the production of large seals both material and difficult to process. Can be made by bonding methods, more convenient. First, the splint production First cut the asbestos sheet set Four 90 ° 1/4 circle, or two 180 ° semi-circle, and keep the interface after bonding the sealing performance is good or bad, the key is the size of the angle at the lap interface and the slope of the smooth degree. , The bonding area is small, easy to pull off, poor sealing, easy to cause leakage, leakage; small angle, bonding area, high strength, difficult to pull off the assembly, but the production is more complex. Practice has proved that the angle Sealing is good at about 18 °, in order to ensure a smooth and consistent bonding surface, strong and sealed after bonding, need to make a fixture for cutting bevel, as shown in FIG.