Changsha DLADTO Rebar Splice Co., Ltd

The raw material of rebar coupler is No. 45 carbon structural steel, which determines the possibility of rust if the  rebar coupler  encounters water. Therefore, rust prevention is an important link in the production process of rebar splice at ADTO factory.  1. The cutting fluid will be used in the tapping process of rebar coupler reproduction. Cutting fluid is water-soluble oil and has a certain function of rust removal and rust prevention. If the cutting fluid is of inferior quality with low concentration, it will make the rebar coupler easy to rust and hard to store. 2. The rebar connection coupler packing bag is attached film woven bag. If the quality of the woven bag is not good and the seal is not strict, it will also make the mechanical splice rust. 3. If the packing bag is damaged due to improper transportation and caught in rain and dampness, the rebar coupler will rust. 4. In the process of storage, if the rebar coupler is in a humid environment, it is easy to rust if it last

Mechanical connection   processes of steel bars: upsetting straight thread coupler connection and rolling straight thread connection. Steel bar upsetting straight thread coupler connection The upsetting straight thread coupler connection is to upset the end of the steel bar and cut it into a straight thread, then use a sleeve with a straight thread to tighten the steel bar at both ends. Steel bar rolling straight thread coupler connection Steel bar rolling straight thread coupler connection is utilizes the characteristics of plastic deformation of metal materials, cooling and hardening to enhance the strength of metal materials, so that the joint and the base metal are equally strong. According to the rolling straight thread forming method, it can be divided into three types: direct rolling thread, extruded rib rolling thread, and stripped rib rolling thread.

Mechanical connection  processes of steel bars: extrusion connection and taper thread sleeve connection. Rebar coupler extrusion connection The extrusion connection of ribbed steel bar sleeve is to insert two steel bars to be connected into the sleeve, and squeeze the steel sleeve along the radial direction with the extrusion connection equipment, so that the deformed steel sleeve and the longitudinal and transverse ribs of the connected steel bar are produced. A method of connecting steel bars that are integrated as a whole. This kind of joint has good quality stability and can be as strong as the base metal, but the operator has lots work, and sometimes it may cause the hydraulic oil contaminates the steel bar, and the composite cost is high. Rebar extrusion connection requires a minimum center-to-center spacing of 60mm. Rebar taper thread sleeve connection Rebar taper thread sleeve connection is a steel bar connection method in which the ends of two steel bars are made of tapered ou

The   parallel thread rebar coupler   is a steel sleeve for the mechanical joint which transmits the axial tension or pressure of the steel bar. The connection method of the parallel threaded rebar coupler is to strip off part of the longitudinal rib and transverse rib of the end of the steel bar by cutting with a wire rolling machine, and then roll directly into ordinary parallel thread, and connect with the special parallel rebar coupler to finish the connection of the steel bar. So, how do we check its connection quality? 1. Appearance inspection of construction quality: (1) Check whether the crimping pattern conforms to the plan, why the coupler rusts, and whether the coupler is under pressure. The small indentation of the joint shall conform to the standard. (2) There should be no visible cracks on the appearance of the joint.  (3) The curvature of the joint is 40. (4) At both ends of the joint, the steel bars have inspection marks. (5) During the appearance inspection, three samp

The location of   steel sleeve   connection joints 1. The joint is located in the position where the tensile steel stress is small. When the joint is set to a high stress position, the percentage of Class III joints in the same connection section cannot be big than 25%. The percentage of Class II seams should not be big than 50%, and the percentage of Class I seams should not be limited. 2. The node avoids the seismic fortification requirements of the frame beam end and the column end stirrup densification area. When it is unavoidable, the percentage of Class II joints or Class I joints should not over 50%. 3. For parts with low tensile strength or longitudinal compression, the percentage of joints is not limited. Changsha DLADTO Rebar Splice Co., Ltd  is a professional rebar coupler producer, we have been in this field for a long time with customers for all over the world. If you have any inquiry, welcome to contact us.