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我厂预应力电杆的生产历年来是采用由φ10盘圆冷拔成φ5.5的钢筋作为纵向主筋的。由于在冷拔工艺中所采用的润滑剂及拔模锥度角不够合理,使钢丝通过冷拔后表面沾上一层油灰,所以混凝土与钢筋的握裹力降低了,严重影响了预应力电杆的质量。怎样才能提高混凝土与钢筋的握裹力呢?关键在于去掉钢筋上的油灰。而要去掉油灰,就必须要有一种理想的润滑剂。为此,我厂把试制润滑剂作为主攻对象,先后提出了15种配方,并——进行了试
In the past years, the production of prestressed electric poles in our factory has adopted the steel bars cold drawn from φ10 round to φ5.5 as the longitudinal main bars. Because the lubricant and draft taper angle used in the cold-drawing process are not reasonable enough, the surface of the steel wire after being cold-drawn is stained with putty, so the grip strength of the concrete and the steel bar is reduced, which seriously affects the prestressed electric pole. the quality of. How can we improve the binding force of concrete and steel? The key is to remove the putty on the rebar. To remove the putty, you must have an ideal lubricant. To this end, our factory used trial lubricants as the main attack target, and put forward 15 formulas, and - conducted trials.