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怎样快速用肉眼辨别无缝钢管的好坏?

来源:http://www.n-impact20.com

【 发布于:2019-04-24 15:54:07 】


1.伪劣无缝钢管容易刮伤,缘由是伪劣无缝钢管厂家设备粗陋,易产生毛刺,刮伤钢材外表。深度刮伤降低钢材的强度。

1. False and inferior seamless steel pipes are easy to scratch, because the equipment of the fake and inferior seamless steel pipe manufacturer is crude, easy to produce burrs and scratch the steel appearance. Deep scratch reduces the strength of steel.

2.伪劣无缝钢管无金属光泽,呈淡红色或相似生铁的颜色。

2. The fake and inferior seamless steel pipe has no metallic luster and is light red or similar to pig iron.

3.伪劣无缝钢管的横筋细而低,经常呈现充不满的现象,缘由是厂家为到达大的负公差,废品前几道的压下量偏大,铁型偏小,孔型充不满。

3. The transverse bars of fake and inferior seamless steel pipes are thin and low, which often presents the phenomenon of full dissatisfaction. The reason is that in order to achieve large negative tolerance, the manufacturer has a large reduction in the first few routes of waste products, a small iron profile and a full pass.

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4.伪劣无缝钢管的横截面呈椭圆形,缘由是厂家为了节约资料,废品辊前二道的压下量偏大,这种无缝钢管的强度大大公开降,而且也不契合无缝钢管外形尺寸的规范。

4. The cross-section of the fake and inferior seamless steel tube is elliptical. The reason is that in order to save information, the manufacturer reduces the strength of the seamless steel tube publicly and does not conform to the specification of the shape and size of the seamless steel tube.

5.无缝钢管的成分平均,冷剪机的吨位高,切头端面平滑而划一,而伪劣无缝钢管由于材质差,切头端面常常会有掉肉的现象,即凹凸不平,并且无金属光泽。而且由于伪劣厂家产品切头少,头尾会呈现大耳子。

5. Seamless steel pipe has average composition, high tonnage of cold shearing machine, smooth and uniform cutting end face, while fake and inferior seamless steel pipe often has meat loss phenomenon, that is, uneven cutting end face, and no metallic luster. And because the products of fake and inferior manufacturers cut little, the head and tail will show big ears.

6.伪劣无缝钢管材质含杂质多,钢的密度偏小,而且尺寸超差严重,所以在没有游标卡尺的状况下,能够对它停止称量核对。普通来说整相称量效果会更好,主要思索到累积误差和概率论这个问题。

6。 The fake and inferior seamless steel pipe material contains many impurities, the density of the steel is small, and the size is too bad。 Therefore, without vernier calipers, it can stop weighing and checking。 Generally speaking, the effect of integral phase weighing is better, mainly considering the problem of cumulative error and probability theory。



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