The application rate of shrinkage screws is very high in the decoration process and the process of settling products. After the shrinkage screws are hit into the holes in the air or on the wall, the nuts on the shrinkage bolts are tightened with a wrench. The bolts go out, but the metal sleeve does not move, so that the big head under the bolts will open the metal sleeve to fill the whole hole.
The firmness of the shrink screw is the application of the diagonality to cause the contraction to produce friction gripping force and achieve the firmness result. Hafen slot embedded part screw one end is threaded, one end has a degree of vertebrae. The appearance of a package of iron, iron cylinder half a few words, put them together into the wall to play a good hole, and then lock the nut, Luo mother screw to pull out, the degree of pull into the iron cylinder, iron cylinder was opened, so firmly solid on the wall, as usually used for guardrail, rain, air conditioning in cement, brick and other materials. But it is not very solid, if the load is large shock, about loose, so it is not recommended for settling ceiling fans.
Shrinkage screw is a special threaded adjacent part used to make air duct support, hanging and bracket firm on the wall, floor and column. It is composed of countersunk bolt, expansion pipe, flat washer, spring washer and hexagon nut. In the application, it is necessary to use the percussion drill (hammer) in the corresponding size of the hole on the joint entity, and then the Hafen groove embedded part to install the bolt and expansion tube into the hole, tighten the nut can make the bolt, expansion tube, settling part and expansion entity into a whole.
The matching process for the inner shrink bolt is to select an alloy drill bit that matches the outer diameter of the inner shrink bolt. The Hafen groove embedment is then drilled with reference to the length of the inner shrink bolt. The hole is drilled as deep as you need to settle, and then the hole is cleaned. Settle the flat washer, spring washer and nut, screw the nut to the bolt and end to cover the thread, and insert the inner shrink bolt into the hole. Turn the wrench until the washer is flush with the physical appearance of the knot. If there is no special request, it is usually tightened by hand and then twisted with the wrench for three to five turns.
Post time: Jan-10-2023