Steel Rolling Straight Thread Connection Quality Control Points Current Position Home-Technical Help-Quality Control Points for Steel Rolling Straight Thread Connection
1) Straight thread processing operators must participate in technical training, and they will be certified to work after passing the examination;
2) The steel bar should be straightened and then cut, and cut by the cutting machine and the grinding wheel. The section of the cut should be perpendicular to the axis of the steel bar. There must be no horseshoe shape or warpage.
3) The wire head, tooth shape, pitch, etc. of the processed steel thread must be consistent with the shape and pitch of the connecting sleeve, and the qualified gauges are qualified;
4) When processing steel thread, water-soluble cut blood cutting lubricant should be used;
5) The operator shall check the appearance quality of the steel wire head one by one and make an operator mark;
6) After self-checking of the steel wire head, the random processing of each type of processing batch shall be 10%, and not less than 10, and the steel thread processing inspection record shall be filled in. If one wire is unqualified, the processing batch shall be processed. All inspections, unqualified silk ends should be reworked, and can only be used after re-inspection;
7) Threaded yarns that have been inspected shall be protected and put on protective caps, and piled up neatly according to specifications;
8) When connecting steel bars, the specifications of the steel bars and the specifications of the connecting sleeves should be the same. The type, pitch and outer diameter of the steel thread should match the connecting sleeve. And ensure that the thread of the steel bars and connecting sleeves are clean and intact;
9) When connecting the steel bars, the steel bars should be screwed into the connecting sleeves according to the axis;
10) After the joint is spliced, the two wire ends should be tightly clamped to each other at the center of the sleeve, and no complete thread of the buckle should be exposed at each end of the sleeve.
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