Problems with long screw rolling thread （二）

Six, the long screw thread line is not smooth

The reason:

1. Poor precision of dental plate
2. Underdenture
3. Poor installation
4. No direct rotation (sliding over the square plate)
5. Too deep a cut in the thread
6. Thread laceration

The reason:

The long screw rolling thread path has its own drawbacks

2. The pressure of the thread plate is too high, and the Angle of the exit part is not good
3. Fracture of thread lines

The reason:

1. Excessive transfer pressure
2. Abnormal pressure in the exit section

Thin lines

The reason:

1. Thin lines on the plaque
2. Poor adjustment of thread pitch
3. Poor time coordination during the transfer

Ten, the thread is elliptical

The reason:

1. Rolling thread ellipses
2. Excessive pressure on the outlet part of the thread plate
3. Insufficient length of dental plate
4. Poor nail holding time

The thread grain has the injury

The reason:

1. The thread of the dental plate are stuck with debris

There are injuries rolling thread

3. Improper disposal of rolling thread

Twelve, there are abrasions on the head seat

The reason:

1. The inlet guide plate is lower than the dental mold
2. The Angle of the dental mold is wrong
3. Too much pressure on your head
4. Poor coordination of transfer time

There is a stripe on the thread grain along the bar diameter

The reason:

1. There is no chamfer at the outlet of the fixed surface
2. Excessive pressure adjustment at the exit
3. Insufficient length of dental plate
4. Bad chamfering at all angles of the dental plate

If you want to know more about long screw fasteners, please contact Shi Shi Tong.

Skype: kalyn qin M: +86 18124507113 Tel: +86 0755-85296744 annie@szsst88.com Add: No. 11, Dinghou Road, Dongfang Community, Songgang Street, Baoan District, Shenzhen, Guangdong, China