1, clip low hardness; hardness is lower than when the clip strand hardness, clips can not be formed strand nicks in the surface, of course, will not bite strand, and then back to the top when the jack when, strand followed to retract, thus forming a slide wire.
Will scratched the side of the clip when it is different strand when the heart can cause tension, which will be full of iron filings scraped folder; 2, tensioning jack and anchorage misalignment or stopper plate and anchor work different heart piece teeth gaps. Because the slot is filled with jaw teeth embedded iron can not live Strand Back to top, the top strand this time due to back injury retraction speed clip teeth, caused by slippery silk.
3, the stopper plate wear; With the increase in the frequency of use, under considerable pressure, the support part stopper plate will be pressed down, resulting in a smaller size limit. Tensioned steel hinge line when moving backwards, clip hole open, less than the diameter of steel hinge line, because the clip is harder than steel hinge line, with steel hinge line when the jack forcibly moved backward, the clip will scratched steel hinge line appearance, resulting in a smaller diameter steel hinge line, the clip between the teeth filled with iron filings, back to top generated when the slide wire, high-speed retractable steel hinge line will damage the jaw teeth.
4, clip teeth in Tension butter, sand; when using teeth have clips sand or other impurities, impurities filling in the gap clip teeth in, when back to the top, the clip can not be embedded put steel hinge lines produce silk slip.
5, steel hinge line rust. Steel Cable rust will be filled with the same clip teeth gaps caused by slippery silk.
6, there is sediment in the stopper plate; there is sediment in the stopper plate, the harm is equivalent to the stopper plate wear limit will lead to smaller size and produce silk slip.
7, installation folder films do not elastic ring; anchor installation work, sometimes in the clip-on-chip
The elastic ring (oil "0" rings or bead) be damaged or lost, some workers do not the easy way elastic ring, so that when the top back, the clip with steel hinge line frictional force becomes small lead clips no follow-up. High Speed Steel Cable retraction will damage the jaw teeth, resulting in slippery silk.
8, clip and anchor work is not complete; at the same site using two anchors, sometimes chaotic management, resulting in not supporting the use of clips, because Anchorage taper two systems may be different, resulting in not tight clip holder strand caused by slippery silk.
9, the operation unskilled workers, oil return down too fast, too late to anchor clips Gang wire, high-speed retractable steel hinge line will damage the jaw teeth, resulting in slippery silk.