Cold extrusion sleeve connection method and measures:

1. Fix operators and provide technical training to corresponding operators.

2. Before squeezing and connecting, the end of the steel bar is marked with a positioning mark and an inspection mark. The positioning mark indicates the position of the steel bar and the sleeve. Since the steel sleeve is stretched after being squeezed, the positioning mark enters the joint, so an inspection mark is set to inspect the steel. Is the sleeve position correct?

3. When squeezing, it must be carried out from the indentation mark in the middle of the joint to both ends in sequence.

4. In order to improve work efficiency, in the processing plant area, the sleeve is connected with the steel bar to complete half of the extrusion head, and the other half is extruded on site, but the semi-finished product should be erected and placed to prevent the extrusion cylinder from being contaminated.

5. The cold-extrusion sleeve must be consistent with the specifications of the steel bar, and the size of the steel bar should not be replaced by the larger one. When the steel bar changes in diameter, if the steel bar differs by one grade, a large diameter sleeve can be used. If the steel bar differs by two or two grades, it must Add a transition section.

6. The cold-extruded film must be used in the same specifications. When connecting steel bars of different diameters, the corresponding film should be taken according to the diameter of the steel bars in the two passes.

7. After the extrusion connection is completed, straighten it in time, and the deflection angle is less than or equal to 4 degrees.

Strengthen quality inspection work, quality inspection is divided into two parts: appearance inspection and tensile test.