CN85107780A - 混凝土构件用中强钢丝及热轧盘条 - Google Patents
混凝土构件用中强钢丝及热轧盘条 Download PDFInfo
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- CN85107780A CN85107780A CN 85107780 CN85107780A CN85107780A CN 85107780 A CN85107780 A CN 85107780A CN 85107780 CN85107780 CN 85107780 CN 85107780 A CN85107780 A CN 85107780A CN 85107780 A CN85107780 A CN 85107780A
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Abstract
本发明为混凝土构件用中强钢丝及热轧盘条，其优点是可由热轧盘条直接冷拔而成中强钢丝，无需热处理。钢丝和盘条的主要化学成分为：C 0.15～0.28％，Mn 1.30～1.75％，Si 0.25～0.70％，S≤0.050％，P≤0.050％。
Description
本发明是一种用于制造予应力混凝土构件的中强钢丝及热轧盘条。
目前，制造予应力混凝土构件的配筋用钢丝，一般采用普通碳素结构钢热轧盘条，经冷拔后制成，其缺点是该钢丝强度偏低（抗拉强度大部分不足6.5公斤/毫米2），塑性也差，经常发生脆断，影响施工安全。由于钢丝强度偏低，只有增加配筋数量来保证构件的强度，故用普通碳素结构钢冷拔钢丝配筋的予应力混凝土构件含钢量大，为适应建筑业的需要，一些国家研制了高强度冷拔钢丝，作为予应力混凝土构件的配筋，如英国BS2691：1969钢，其化学成份是C0.60～0.90%，Mn0.50～0.90%，Si0.10～0.35%，其强度在160公斤/毫米2以上，但缺点是要经过热处理，能耗较高，工艺复杂。
本发明的目的是提供一种其主要化学成份为C0.15～0.78%，Mn1.30～1.75%，Si0.25～0.70%，S≤0.050%，P≤0.050%的钢丝，其特点在于不需要经过热处理，即可由热轧盘条直接冷拔成予应力混凝土构件用的中强钢丝，其抗拉强度不低于80公斤/毫米2。用这种钢丝制做的予应力混凝土构件，比用普通碳素结构钢冷拔钢丝制做的予应力混凝土构件，可节省钢材20%左右，由于强度高，施工安全可靠。与英国BS2691：1969高强度钢丝相比，本发明能节省能源，简化工艺。
Claims (2)
1、一种用于制造予应力混凝土构件用中强冷拔钢丝的热轧盘条，其特征在于化学成份为(%)，C0.15～0.28，Mn1.30～1.75，Si0.25～0.70，S≤0.050P≤0.050。
2、一种制造予应力混凝土构件用中强钢丝，其特征在于用化学成份为（%）CO.15～0.28，Mn1.30～1.75 Si0.25～0.70，S≤0.050，P≤0.050的热轧盘条冷拔制成。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85107780 CN85107780A (zh) | 1985-10-23 | 1985-10-23 | 混凝土构件用中强钢丝及热轧盘条 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85107780 CN85107780A (zh) | 1985-10-23 | 1985-10-23 | 混凝土构件用中强钢丝及热轧盘条 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN85107780A true CN85107780A (zh) | 1987-02-11 |
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ID=4795772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85107780 Withdrawn CN85107780A (zh) | 1985-10-23 | 1985-10-23 | 混凝土构件用中强钢丝及热轧盘条 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85107780A (zh) |
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1985
- 1985-10-23 CN CN 85107780 patent/CN85107780A/zh not_active Withdrawn
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| WW01 | Invention patent application withdrawn after publication |