Pipe preparation:
1) The pipe shall be cleaned after cutting, and the end face shall be smooth without rough selvedge
2) Purge the cut pipe to remove iron filings and dust.
3) Use a chamferer to remove the burr outside the pipe. After chamfering, use a dust-free cloth to wet the pipe incision with IPA.
4) The cleaned pipe is sealed with a pipe cap at the opening, and then transported to the site.
Pipe welding:
1) Before welding, the special clamp block is used to fix and align the pipe, and the welding handle is installed after the pipe is aligned.
2) Use a level to correct the line.
3) Connect the pressure gauge at the end of the pipe to ensure that the internal back pressure meets the welding pressure.
4) After welding, continue blowing until the pipe is cooled.
5) After confirming that the welding result is qualified, mark the code and date near the welding position.
6) Keep welding records and test pieces.
The unqualified welding shall be treated as follows:
1) Remove all unqualified welding parts.
2) The quality control personnel shall be informed before removing the pipeline.
3) Open the valve on the air supply system to blow clean.
4) Install the end blowing pipe to ensure that the pipe is not polluted by particles during pipe cutting.
5) Qualified wheel pipe cutter shall be used for pipe cutting tools.
6) When the unqualified welding part is located in the vertical pipeline position, the nearest horizontal position shall be removed and replaced.
7) Re weld and adjust the purge gas back to the original state.
In the past 20 years, DEAR Air Separation has been committed to providing high-quality complete sets of air separation equipment for customers at home and abroad, as well as providing customers with air separation equipment maintenance, energy saving, intelligent upgrading and other services for a long time. Up to now, the company has undertaken the maintenance business of more than 100 sets of air separation units, and has completed the energy-saving and intelligent transformation of many sets of air separation units, which has been recognized and trusted by the majority of customers.
Our technical service network, which is composed of experienced and skilled debugging experts, is active in many areas and continues to receive technical skills training. DEAR's equipment maintenance and debugging is systematic, in strict accordance with the technical standards, to meet customer requirements.
DEAR takes the lead in creating intelligent manufacturing technology. In the production of spare parts, laser, vision and other intelligent technologies are added to the key process and quality nodes to assist AI algorithm to optimize the production, and intelligent automatic control is carried out through MES bus, so as to achieve the purpose of production automation, informatization, intelligence, transparent and visual production line, and product traceability. Ensure product quality.
The remote operation and maintenance system can monitor the operation data of the equipment in real time, give an active warning in the process, prompt the user to adjust and maintain in time, and ensure the safety of the equipment in the process of operation. Intelligent system management will greatly improve the efficiency of the equipment, make the customer's equipment in the best operating condition for a long time, and extend the service life of the equipment. For customers to reduce maintenance cycle, cost savings.
The company not only accumulated a lot of experience in the area of equipment maintenance floor, but also won the praise of customers in energy saving and intelligent transformation of existing air separation equipment. The energy consumption of the reformed air separation unit can be reduced by 5% - 15% on average compared with the previous one, which can save a lot of cost for customers every year.
