Welcome to Liaoning Public Technology Co., Ltd. official website.

ss.PNG18004275506

News
News

Contact
Contact


Liaoning Zhong Ji Technology Co., Ltd.

Contact: Manager Wang

Tel: 18004275506

Eighteen billion four million two hundred and seventy-five thousand five hundred and nine

Tel: 0427-6515296

Fax: 0427-6515299

Mailbox: lnzjgy@126.com  

Zip code: 124200

Website: wenlnzhongji.mycn86.cn

Address: Dawa Lingang Economic Zone, Panjin, Liaoning


Your current location: Home >> News >> Enterprise announcement

As for the welding of steel skeleton polyethylene composite pipes, all we need to know is that.

Release date:2018-07-19 Author: Click:

As far as welding of steel skeleton polyethylene composite pipes is concerned, enough is known.

As we all know, for any construction project, to ensure the final construction quality of the pipeline, we are required to fully comply with the correct construction codes and specifications in the construction process to carry out the construction, of course, in the actual operation process, in addition to the construction in accordance with the fixed operating procedures, in fact, the right For some pipes, it's enough to know some important information. Pipeline welding construction is a headache for many people, the welding process in the large and small cumbersome problems are also very depressing. But what we're going to show you today is that the welding of pipes is not as troublesome as everyone thought. Especially for pipes of steel skeleton and polyethylene composite pipe, it's enough to know the following points when welding.

Detection of steel skeleton polyethylene composite pipes

First of all, it should be noted that the pipeline before welding should first check whether the gap between the pipeline is in line with the requirements, whether the fuse sleeve is pulled in place, the gap between the pipeline should not be greater than 2 mm, check whether the welding machine power line touch is outstanding, the output plug is not deformed, there is no sediment or oxide layer, sweep will form a touch Various factors of poor touch.




2. Correct the welding type and resistance value, select the welding technical parameters, ensure that the selected welding technical parameters are correct, insert the output plug of the welding machine into the socket of the welding joint, make it adhere to outstanding touch, and the voltage and heating time of the heating should match the parameters of the welding technology.




3. When welding steel skeleton polyethylene composite pipe, pay attention to investigating the change of the investigation hole of the welded joint, and whether there is abnormal sound, whether the joint deformation and surface temperature change is normal, if it is found that the feeding should be stopped immediately, analyze the factors to draw up corrective measures, and put it on record, the cooling period of the welded joint should not be moved. Oscillating connectors or applying any external forces to the connecting parts.




4. If the construction schedule is affected by the shortage of centralizers, the centralizer can be unloaded after the four bolts of the centralizer are loosened, but some of the joints should not be affected by any external force, and the welded surface should not be damaged during the shortening process. The electric melting cooling method is natural cooling, so it is not suitable to adopt forced cooling.




5. Monitoring the current situation during the welding process. If the current rises beyond 2A during the last 30 seconds of the welding process, constant current welding is adopted. The current magnitude and the current rise before the value, until the end of the original welding time, when the melting temperature drops to normal temperature, the centralizer can be disassembled.


This article URL:http://en.lnzhongji.com/news/375.html

Key words:

Recently Viewed:

Liaoning Zhong Ji Technology Co., Ltd.

Contact: Manager Wang

Tel: 18004275506

Eighteen billion four million two hundred and seventy-five thousand five hundred and nine

Tel: 0427-6515296

Fax: 0427-6515299

Mailbox: Wang35055@163.com

Zip code: 124200

Address: Dawa Lingang Economic Zone, Panjin, Liaoning

PE钢骨架复合管