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关 键 词:成都国标质量弯钩型钢纤维厂家
行 业:橡胶 橡胶制品 医用橡胶制品
发布时间:2020-12-05
钢纤维是一种新、高性能的钢纤维品种。钢纤维道路的配合比设计方法大体与普通混凝土相同,不同点为:强度双控标准(抗压强度和弯拉强度);钢纤维掺量根据设计要求的弯拉强度确定;单位用水量和砂率与纤维掺量有关,每掺加0.5%(体积率)钢纤维,单位用水量增加6kg,砂率增大2%。
钢纤维混凝土具有与普通混凝土一样的搅拌、运转和施工性能,纤维在混凝土中不会结球,分布均匀,可在商品混凝土搅拌站进行生产并能用于泵送施工。铣削钢纤维混凝土的早期坍落度损失较大,30分钟损失32%,2小时损失42%。钢纤维混凝土的实际工作性优于相同的坍落度的普通混凝土。钢纤维混凝土具有良好的材料性能,与普通混凝土相比,其抗压强度提高2~20%;弯拉强度提高20~50%;劈裂抗拉强度提高20~40%;耐磨性能提高40%左右,其物理力理性能完全可以满足城市道路工程及检查井盖等配套构件需求技术指标。钢纤维粗糙而洁净的表面,能与混凝土中的水泥浆体牢固的结合,这是铣削钢纤维提高混凝土各种性能的根本原因。
钢纤维问世的时间不长,但应用领域越来越广泛,与此相应,钢纤维的品种也再不断增多。
1.按外形划分(图1)有:平直形钢纤维(a)、压棱形钢纤维(b)、波形钢纤维(c)、弯钩形钢纤维(d\e)、大头形钢纤维(f)、双尖形钢纤维(g)、集束钢纤维(h)等等。
2.按截面形状划分(图2)有:圆形(a)、矩形(b)、槽型(c)、不规则性(d)
3.按生产工艺划分有:切断钢纤维(用细钢丝切断);剪切钢纤维(用薄钢板、带钢剪切);
铣削型钢纤维(用厚钢板或钢锭切削);熔抽钢纤维(用熔融钢水抽制)。有前途的是溶抽钢纤维,价格。
Steel fiber has not been out for a long time, but its application field is more and more extensive. Accordingly, the variety of steel fiber is also increasing.
1. According to the shape (Figure 1), there are: straight steel fiber (a), pressed prismatic steel fiber (b), corrugated steel fiber (c), hook shaped steel fiber (D \ E), large head shaped steel fiber (f), double pointed steel fiber (g), bundled steel fiber (H), etc.
2. Divided by section shape (Fig. 2): Circular (a), rectangular (b), groove (c), irregular (d)
3. According to the production process, it can be divided into: cutting off steel fiber (cutting with fine steel wire); cutting steel fiber (cutting with sheet steel and strip steel);
Milling section steel fiber (cutting with thick steel plate or ingot); melting drawing steel fiber (drawing with molten steel). The most promising is the steel fiber with the lowest price.
报错
ntroduction to steel fiber
为增强砂浆或混凝土而加入的、长度和直径在一定范围内的细钢丝。常用截面为圆形的长直钢纤维,其长度为10~60毫米,直径为0.2~0.6毫米,长径比为30~100。为增加纤维和砂浆或混凝土的界面粘结,可选用各种异形的钢纤维,其截面有矩形、锯齿形、弯月形的;截面尺寸沿长度而交替变化的;波形的;圆圈状的;端部放大的或带弯钩的等。当使用截面非圆
形的钢纤维时,可按下式计算其当量直径(de):,
以切断细钢丝法、冷轧带钢剪切、钢锭铣削或钢水快速冷凝法制成长径比(纤维长度与其直径的比值,当纤维截面为非圆形时,采用换算等效截面圆面积的直径)为30~100的纤维。因制取方法的不同钢纤维的性能有很大不同,如冷拔钢丝拉伸强度为380-3000MPa、冷轧带钢剪切法拉伸强度为600-900MPa、钢锭铣削法为700MPa;钢水冷凝法虽为380MPa,但是适合生产耐热纤维。
钢纤维问世的时间不长,但应用领域越来越广泛,与此相应,钢纤维的品种也再不断增多。
1.按外形划分(图1)有:平直形钢纤维(a)、压棱形钢纤维(b)、波形钢纤维(c)、弯钩形钢纤维(d\e)、大头形钢纤维(f)、双尖形钢纤维(g)、集束钢纤维(h)等等。
2.按截面形状划分(图2)有:圆形(a)、矩形(b)、槽型(c)、不规则性(d)
3.按生产工艺划分有:切断钢纤维(用细钢丝切断);剪切钢纤维(用薄钢板、带钢剪切);
铣削型钢纤维(用厚钢板或钢锭切削);熔抽钢纤维(用熔融钢水抽制)。有前途的是溶抽钢纤维,价格。
4.按材质划分有:
普碳钢纤维(抗拉强度一般在300~2500MPa);
不锈钢纤维(按材质有304,310,330,430,446等);
其他金属纤维(铝纤维、铜纤维、钛纤维以及合金纤维)。5.按表面涂覆状态划分有:
无涂覆层,表面涂,镀锌等。工业上大量使用的是无涂覆层的普通钢纤维。
6.按施工工艺分类有:喷射用、浇注用。
7.按直径尺寸分类有:
普通钢纤维(直径d>0.08mm);
超细钢纤维(直径d≤0.08mm);
超细钢纤维主要用于增强塑料及摩擦材料。
Steel fiber has not been out for a long time, but its application field is more and more extensive. Accordingly, the variety of steel fiber is also increasing.
1. According to the shape (Figure 1), there are: straight steel fiber (a), pressed prismatic steel fiber (b), corrugated steel fiber (c), hook shaped steel fiber (D \ E), large head shaped steel fiber (f), double pointed steel fiber (g), bundled steel fiber (H), etc.
2. Divided by section shape (Fig. 2): Circular (a), rectangular (b), groove (c), irregular (d)
3. According to the production process, it can be divided into: cutting off steel fiber (cutting with fine steel wire); cutting steel fiber (cutting with sheet steel and strip steel);
Milling section steel fiber (cutting with thick steel plate or ingot); melting drawing steel fiber (drawing with molten steel). The most promising is the steel fiber with the lowest price.
4. It is divided into:
Ordinary carbon steel fiber (tensile strength is generally 300 ~ 2500mpa);
Stainless steel fiber (304310330430446, etc. according to the material);
Other metal fibers (aluminum fiber, copper fiber, titanium fiber and alloy fiber). 5. According to the surface coating state, it is divided into:
No coating, surface coated with epoxy resin, galvanized, etc. The common steel fiber without coating is widely used in industry.
6. According to the classification of construction technology, it is used for spraying and pouring.
7. Classified by diameter and size:
Ordinary steel fiber (diameter d > 0.08mm);
Ultra fine steel fiber (diameter D ≤ 0.08mm);
Superfine steel fiber is mainly used for reinforcing plastics and asbestos friction materials.