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金属矩形雨水管机械性能
文章来源:www.larcjc.cn  作者:瑞晨建材  更新时间:2019-05-01 18:48:02  Tag:  浏览:14

 机械性能 机械性能是指金属材料在外力作用下所表现出来的特性。

 

1、强度:材料在外力(载荷)作用下,抵抗变形和断裂的能力。材料单位面积受载荷称应力。

2、屈服点(бs):称屈服强度,指材料在拉抻过程中,材料所受应力达到某一临界值时,载荷不再增加变形却继续增加或产生0.2%L。时应力值,单位用牛顿/毫米2(N/mm2)表示。

3、抗拉强度(бb)也叫强度极限指材料在拉断前承受最大应力值。单位用牛顿/毫米2(N/mm2)表示。

4、延伸率(δ):材料在拉伸断裂后,总伸长与原始标距长度的百分比。

5、断面收缩率(Ψ)材料在拉伸断裂后、断面最大缩小面积与原断面积百分比。

6、硬度:指材料抵抗其它更硬物压力其表面的能力,常用硬度按其范围测定分布氏硬度(HBS、HBW)和洛氏硬度(HKA、HKB、HRC)

7、冲击韧性(Ak):材料抵抗冲击载荷的能力,单位为焦耳/厘米2(J/cm2)

 

Mechanical properties mechanical properties refer to the characteristics of metal materials under the action of external forces.

1, strength: The material under the action of external forces(load), the ability to resist deformation and fracture. The unit area of the material is subject to load stress.
2, yield point(<UNK> s): referred to as yield strength, refers to the material during the process of stretching, the stress received by the material reaches a certain critical value, the load does not increase deformation but continues to increase or produce 0.2 % L. The time-stress value is expressed in Newtons / mm 2(N/mm2).
3, tensile strength(<UNK> B) is also called strength limit refers to the maximum stress value of the material before drawing. The unit is represented by Newton / mm 2(N/mm2).
4, extension rate(Δ): After the tensile fracture, the total elongation and the original gauge length of the material.
5, cross-sectional shrinkage(<UNK>) After the tensile fracture, the maximum reduction area of the cross section and the percentage of the original break area.
6, hardness: refers to the material's ability to resist other harder material pressure on its surface, commonly used hardness according to its range to determine the distribution of hardness(HBS, HBW) and Rockwell hardness(HKA, HKB, HRC)

 

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