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​PVC缠绕管检测硬度的方法

作者: laobingguandao    来源:http://www.laobingguandao.com  时间:2020-07-28    人气:
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。
In the use of PVC winding pipe, in order to ensure its quality, first of all, the material of the product must be good, and then the process must pass. If the overall product is not strong enough, then its safety factor will be greatly reduced. Therefore, it is necessary to do a good job of corresponding detection before use to ensure whether its quality is up to standard.
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 annealed pipe with inner diameter more than 6.0 mm and wall thickness less than 13 mm. The test is very fast and simple, which is suitable for quick and non-destructive qualification inspection of pipes.
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 and the wall thickness is greater than 1.2mm, the hardness of HRB and HRC shall be tested by Rockwell hardness tester. For products with inner diameter greater than 30mm and wall thickness less than 1.2mm, hardness of HRT or hrn shall be tested by surface Rockwell hardness tester.
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 greater than 4.8 mm, the hardness of hr15t is tested by special Rockwell hardness tester. When the inner diameter of non PVC winding pipe is more than 26mm, the hardness of inner wall of pipe can be tested by Rockwell or surface Rockwell hardness tester.
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。
The characteristic of the winding pipe is the high quality of the melting seam formed by the hot winding. The flat and U-shaped tape extruded from the die of the extruder are evenly wound on the heated roller mould according to the predetermined position, thus ensuring the quality of the weld joint of the structural wall pipe. Especially in the structural design, the fusion joint of the flat tape is covered by the polyethylene coated support pipe, which improves the overall external pressure resistance of the product.
安装性能优异,缠绕管用途管道连接采用在承口预埋电熔丝同材质承插电熔连接技术,连接质量高。可做到100%无泄露,保证了管道系统寿命的相同性和运行的安全性。同时,由于该产品在同等应用条件下比其它管材重量轻,便于运输,施工方便快捷,可降低施工费用,在应用范围,不需混凝土垫层和混凝土管基沟槽合格后即可直接敷管,基本上呆做到边开挖、边下管、边回填,简化了施工程序,缩短了工期。在工程验收时,采用闭气检验代替闭水试验,既加快了验收速度,又节闭水试验中繁杂的工作和大量的试验费用。
The installation performance is excellent, and the pipe connection for winding pipe uses the same material socket electric fusion connection technology with embedded electric fuse at the socket, and the connection quality is high. It can achieve 100% no leakage and ensure the same service life and operation safety of the pipeline system. At the same time, because the product is lighter than other pipe materials in the same application conditions, it is easy to transport, convenient and fast construction, and can reduce the construction cost. In the application scope, the pipe can be directly laid without concrete cushion and concrete pipe foundation groove. Basically, the excavation, pipe laying and backfilling can be realized at the same time, which simplifies the construction procedure and shortens the construction period. In engineering acceptance, the closed water test is replaced by the closed air test, which not only speeds up the acceptance speed, but also saves the complicated work and a lot of test costs in the closed water test.
PVC缠绕管的质量检测,一定要保证质量上是过关的,而它的硬度一般常用布氏、洛氏、维氏三种硬度指标来衡量,因此要想判断它的硬度是否标准,不妨采取上述方法来试一下。
The quality inspection of PVC winding pipe must ensure that the quality is qualified, and its hardness is generally measured by Brinell, Rockwell and Vickers hardness indexes. Therefore, if you want to judge whether its hardness is standard, you may as well take the above method to try.

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