南通市PVC管环刚度检测 塑料管抗冲击实验

　PVC缠绕管在使用中，要想它的质量有所保障，首先一定要是产品的材料要好，其次就是工艺上要过关，如果产品整体来说不够结实，那么对于其安全系数就会大大降低，所以说一定要在使用前，做好相应的检测，确保它的质量是否达标。Inthe use of PVC winding pipe, in order to ensure its , firstof all, the material of the product must be good, and then theprocess must pass. If the overall product is not strong enough,then its safety factor will be greatly reduced. Therefore, it isnecessary to do a good job of corresponding detection before use toensure whether its is up tostandard.1、内径在6.0mm以上，壁厚在13mm以下的退火管材，可以采用W-B75型韦氏硬度计，它测试非常快速、简便，适于对管材做快速无损的合格检验。1.W-b75 type Vickers hardness tester can be used for the annealedpipe with inner diameter more than 6.0 mm and wall thickness lessthan 13 mm. The test is very fast and simple, which is suitable forquick and non-destructive inspection ofpipes.2、PVC缠绕管内径大于30mm，壁厚大于1.2mm的，采用洛氏硬度计，测试HRB、HRC硬度。管的内径大于30mm,壁厚小于1.2mm的产品，采用表面洛氏硬度计，测试HRT或HRN硬度。2.If the inner diameter of PVC winding pipe is greater than 30mm andthe wall thickness is greater than 1.2mm, the hardness of HRB andHRC shall be tested by Rockwell hardness tester. For products withinner diameter greater than 30mm and wall thickness less than1.2mm, hardness of HRT or hrn shall be tested by surface Rockwellhardnesstester.3、内径小于0mm，大于4.8mm的产品，采用管材专用洛氏硬度计，测试HR15T硬度。当不PVC缠绕管内径大于26mm时，还可以用洛氏或表面洛氏硬度计测试管材内壁的硬度。3.For the products with inner diameter less than 0 mm and greaterthan 4.8 mm, the hardness of hr15t is tested by special Rockwellhardness tester. When the inner diameter of non PVC winding pipe ismore than 26mm, the hardness of inner wall of pipe can be tested byRockwell or surface Rockwell hardnesstester.缠绕管的特点就是热态缠绕成型熔缝质量高，它从挤塑机口模挤出的处于熔融状态的平料带和U型料带，按预定的位置均匀的缠绕在加热的滚筒模具上，保证了结构壁管熔接缝质量。特别是结构设计中平料带的熔接缝被聚乙烯包覆支撑管所覆盖，提高了制品整体的抗外压能力。Thecharacteristic of the winding pipe is the high of themelting seam formed by the hot winding. The flat and U-shaped tapeextruded from the die of the extruder are evenly wound on theheated roller mould according to the predetermined position, thusensuring the of the weld joint of the structural wall pipe.Especially in the structural design, the fusion joint of the flattape is covered by the polyethylene coated support pipe, whichimproves the overall external pressure resistance of theproduct.