ݺҺѹ

Physical factory Customizable designSource manufacturer of ultra-high pressure hydraulic pipe expander products

Support hotline+86-13506116557

Your locationҳ > Product > TUBE EXPANDER

Liquid bag expansion head

Liquid bag expansion head

TypeTUBE EXPANDER

ContactsMr. zhou

Telephone+86.13506116557

Fax+86519.88407828

E-mailkxbg365@qq.com

Address103 Dongfang East Road, Changzhou

Consultation+86.13506116557 QQ

Details

Instructions for expanding head
(special for hydraulic tube expander, customized, + 86.13506116557 thread: M10x1 or m18x1.5)

 

Һ͹2.jpg

Һ͹1.jpg

 

a7-5.jpga7-4.jpga7-1.jpg

 

ʽ͹ali.jpg

ʽ͹11.jpg

ʽ͹.jpg
Instructions for expanding head
(special for hydraulic tube expander, customized, + 86.13506116557 thread: M10x1 or m18x1.5)

The expansion head is a special part of the expansion machine, which is the key part of the expansion machine to complete the expansion joint. When using the expansion head, the following requirements shall be met:
1. Before the formal expansion joint, warm up the machine for 3-5 minutes without load.
2. Before expanding the tube, the sharp edges and burrs at the end of the heat exchanger must be removed to avoid damaging the expanding head.
3. Before installing or replacing the expansion rod, use syringe or other methods to fill the expansion rod with water or selected expansion medium and remove the air in the expansion rod.
4. When replacing and installing the hose and expansion head every time, the air in the ultra-high pressure system must be drained, and the expansion medium shall be supplemented in time to avoid affecting the working efficiency and ensuring the operation safety.
5. During the expansion joint, the extension line of the expansion joint hole of the heat exchanger (opposite to the heat exchanger) shall not stand, otherwise, steel plate or other methods shall be used for protection.
6. For some nozzles that cannot be inserted into the expansion head, the outer circle of the expansion head can be ground small. The gap between the inner diameter of the pipe and the outer diameter of the expansion head shall not exceed 0.3mm. Too large gap will greatly reduce the service life of the expansion head.
7. In the process of tube expansion, the expansion head can only be pulled out after the pressure is completely relieved. Before the expansion joint pressure is completely removed, it is forbidden to pull out the expansion head, otherwise the expansion rod will be seriously damaged.
8. When inserting or pulling out the expansion head, it is forbidden to twist the expansion head.
9. It is forbidden to conduct expansion joint before or before the expansion rod is inserted into the pipe hole, so as to avoid damaging the expansion rod.

service life

1. The life of the expansion bar is controlled between 0.6-0.8mm in the total clearance (the sum of the clearance between the inner diameter of the tube plate hole and the outer diameter of the heat exchange tube and the clearance between the inner diameter of the heat exchange tube and the outer diameter of the expansion bar). Therefore, if the total clearance is less than 0.6mm, the service life will be longer; if the total clearance is greater than 0.8mm, the service life will be reduced; if the total clearance is greater than 1mm, the service life will be lower.

2. The life of the expansion bar is an average value. The more the number of expansion bars in the same specification, the longer the average life is. Otherwise, the shorter the average life is. It is impossible to ensure the life of less than 10 expansion bars. The larger the pipe diameter in different specifications, the longer the average life is, and vice versa. The longer the expansion bar is, the shorter the average life is, and vice versa.

3. When carrying out strength expansion joint, the edge of both sides of the expansion rod liquid bag (rubber part) must be controlled at least 8mm from the edge of the tube plate groove to prevent the edge of the liquid bag from expanding in the groove, otherwise it will seriously affect the life of the expansion rod.

previous page TUBE EXPANDER

Return

Copyright ©Changzhou Haihe Hydraulic Pipe Expander Co., Ltd.expander,tube expander,Tube Expanding Machine,condenser tube empander,hydraulic tube expander ţICP16062335