空调生产厂家在使用内螺纹铜管时首先要将铜管弯成U型弯,随后进行涨管扩口。弯管过程中由于工艺条件或操作不当等原因可能会使弯出的U型弯产生各种各样程度不同的缺陷,这些缺陷的产生将直接影响到产品的安全性、可靠性以及外观质量。因此,针对不同的缺陷类型找出其产生的原因从而及早采取对应的预防措施尤为重要。 Air-conditioning manufacturers in the use of the first thread when the brass tube bent into a U-bend, followed by expansion tube up. Elbow bending process due to improper operation or other reasons may make bent U-bend produce a variety of different degrees of defects, these defects will have a direct impact on product safety, reliability and appearance quality. Therefore, it is particularly important to find out the causes of different types of defects and take corresponding precautionary measures as early as possible.