Mechanical Connection Process of Steel Bar (2)

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.

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How To Adjust Positive And Negative Thread On Thread Cutting Machine ?

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1   Remove the  eccentric bushing  and eccentric shaft from the thread holder, loosen the screws first, and then use a special wrench for the eccentric bushing to rotate the eccentric bushing 180 degrees . Then, place the loosened screws into the screw hole after the rotation of 180 degrees and tighten them (the rolling head and rib stripping head are equipped with 3 eccentric bushing, each with a 180 degree rotation, and tighten them by changing the screw hole). 2 Install the threading roller and place it counterclockwise in 1-2-3  (POSITIVE THREAD)    Install the threading roller and place it anticlockwise in 3-2-1  (NEGATIVE THREAD) 3 Upper the rib stripping machine head, tighten the screws, adjust the test bar, and start working
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Several Advantages of Using Straight Threaded Steel Bars

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1. The steel connecting sleeve is able to reduce the use of materials and easy to operate which not limited by the types of steel components. 2. The  straight threaded sleeve  can be connected conveniently, quickly and simply, they not need electricity in construction. 3. They can connect horizontal, vertical and oblique HRB335 and HRB400 steel bars of the same diameter or different diameter. The specifications and models of straight-threaded steel bar connection sleeves that our factory can produce are φ14-φ40 ordinary steel bar connection sleeves, adjustable steel bar connection sleeves, different diameter steel bar connection sleeves, and special steel bar connection sleeves. And provide wire rolling machine products of steel straight thread processing equipment.
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Problems Encountered During Rebar Coupler Processing

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 Rebar coupler is also known as mechanical splices in the construction industry. The common specifications of the  rebar coupler  are M12, M14, M16, M18, M20, M22, M25, M28, M32, M36, and M40. The most commonly used specifications are M16, M18, M20, M22, M25, M28, and M32. These are the most used on the site, but also the most commonly used. Today, we will introduce to you how to solve the wrong diameter or length problems encountered in the processing of steel sleeves.  Causes:  1. The specifications of raw materials are not accurate, and the feeding speed is too slow. 2. Raw materials are bent and not straightened before processing. 3. The mechanical equipment malfunctioned, resulting in the diameter of the rebar coupler becoming smaller. 4. Operators do not process according to engineering drawings.   Solutions: 1. Adjust raw material specifications and models, and pre-feed appropriate amount. 2. Straighten the round bend steel before cutting the raw material. 3. Check the mechanica
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