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济南镀锌钢管的不同物理性能

来源:http://www.jnxxjm.com

【 发布于:2020-09-16 17:21:35 】


一、硬度指标

1、 Hardness index

金属材料抵抗硬的物体压陷表面的能力,称为硬度。根据试验方法和适用范围不同,硬度又可分为布氏硬度、洛氏硬度、维氏硬度、肖氏硬度、显微硬度和高温硬度等。对于管材一般常用的有布氏、洛氏、维氏硬度三种。

The ability of a metal material to resist the indentation of a hard object is called hardness. Hardness can be divided into Brinell hardness, Rockwell hardness, Vickers hardness, shore hardness, microhardness and high temperature hardness according to different test methods and application scope. For pipe materials, Brinell hardness, Rockwell hardness and Vickers hardness are commonly used.

二、屈服点

2、 Yield point

济南镀锌管价格具有屈服现象的金属材料,试样在拉伸过程中力不增加(保持恒定)仍能继续伸长时的应力,称屈服点。若力发生下降时,则应区分上、下屈服点。济南镀锌管批发屈服点的单位为N/mm2(MPa)。


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Jinan galvanized pipe price has yield phenomenon of metal materials, specimen in the tensile process does not increase (keep constant) can continue to extend the stress, called yield point. If the force drops, the upper and lower yield points should be distinguished. The unit of wholesale yield point of Jinan galvanized pipe is n / mm2 (MPA).

上屈服点(σsu):试样发生屈服而力下降前的应力;下屈服点(σsl):当不计初始瞬时效应时,屈服阶段中的更小应力。屈服点的计算公式为:式中:Fs--试样拉伸过程中屈服力(恒定),N(牛顿)So--试样原始横截面积,mm2。

The upper yield point (σ Su): the maximum stress before the first decrease of the stress due to the yield of the specimen; the lower yield point (σ SL): the minimum stress in the yield stage when the initial instantaneous effect is ignored. The calculation formula of yield point is as follows: FS is the yield stress (constant) in the tensile process of the sample, n (Newton) so -- the original cross-sectional area of the sample, mm2.

三、抗拉强度

3、 Tensile strength

试样在拉伸过程中,在拉断时所承受的力(Fb),出以山东镀锌管原横截面积(So)所得的应力(σ),称为抗拉强度(σb),单位为N/mm2(MPa)。它表示金属材料在拉力作用下抵抗破坏的能力。计算公式为:式中:Fb--试样拉断时所承受的力,N(牛顿);So--试样原始横截面积,mm2。

During the tensile process, the maximum force (FB) that the specimen bears during breaking is the stress (σ) obtained from the original cross-sectional area (so) of Shandong galvanized pipe, which is called tensile strength (σ b), and the unit is n / mm2 (MPA). It represents the maximum ability of a metal material to resist failure under tension. The calculation formula is as follows: FB -- the maximum force borne by the specimen during breaking, n (Newton); so -- the original cross-sectional area of the sample, mm2.


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四、断后伸长率

4、 Elongation after fracture

在拉伸试验中,试样拉断后其标距所增加的长度与原标距长度的百分比,称为伸长率。以σ表示,单位为%。计算公式为:式中:L1--试样拉断后的标距长度,mm;L0--试样原始标距长度,mm。

In the tensile test, the percentage of the length increased by the gauge length to the original gauge length after the specimen is broken is called elongation. Expressed in σ, the unit is%. The calculation formula is as follows: L1 -- gauge length of sample after breaking, mm; l0 -- original gauge length of sample, mm.

五、断面收缩率

5、 Reduction of area

在拉伸试验中,试样拉断后其缩径处横截面积的缩减量与原始横截面积的百分比,称为断面收缩率。以ψ表示,单位为%。计算公式如下:式中:S0--试样原始横截面积,mm2;S1--试样拉断后缩径处的更少横截面积,mm2。

In the tensile test, the percentage of the maximum reduction of the cross-sectional area at the reduced diameter and the original cross-sectional area of the sample after breaking is called the reduction of area. Represented by ψ, the unit is%. The calculation formula is as follows: S0 is the original cross-sectional area of the sample, mm2; S1 is the minimum cross-sectional area of the reduced diameter after breaking, mm2.



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