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自制弹簧秤的注意原则有哪些?

来源: http://www.diannaothj.com    时间:2016-09-12 18:26:44 作者:山东银丰弹簧机设备

(1)钢丝退火,可将钢丝烧红后盖没在热炭火中任其自然冷却,或连炉内煤炭一起取出让它缓慢冷却。如果把烧红的钢丝直接取出冷却,则退火不完全,钢丝硬度大,不易绕制弹簧。
(1) the wire annealing can be wire burning back cover not alone in hot coals or coal furnace cooling, even let it out with the slow cooling. If the red hot wire directly out of the cooling, the annealing is not complete, steel wire hardness, not easy to spring.
(2)用作称量不大的弹簧秤的钢丝可细一些,淬火时温度也不宜太高。温度太高,冷却太迅速会使钢丝过硬过脆而易折断。反之弹簧弹性不强,因此淬火温度应按具体需要而定。
(2) the wire can be used as a small number of weighing scales, quenching temperature should not be too high. The temperature is too high, cooling too quickly will make the steel wire excellent too brittle and easy to break. On the contrary, the spring elasticity is not strong, so the quenching temperature should be determined according to the specific needs.
弹簧秤的制作可作为课外由教师带领或指导学生进行小制作的内容。如果没有适当的弹簧钢丝,可用橡皮筋代替弹簧制成简易橡皮筋测力计。但由于橡皮筋的伸长与所受外力不成正比,故不能等分地进行刻度。(橡皮筋伸长后,横截面变小,使它受力后的相对伸长增大,所以刻度线应上密下疏)。这种测力计虽不够精确,但作为学生练习测物重和进行定性的实验还是很好的。
The production of the spring scale can be used as a teacher to lead or guide students to carry out the contents of the small production. If there is no proper available spring wire, rubber band instead of spring made of simple rubber band dynamometer. But because the extension of the rubber band is not directly proportional to the external force, the scale of the rubber band can not be divided equally. After the rubber band is stretched out, the cross section becomes smaller, so that the relative elongation of the rubber band is increased, so that the scale line is closed. Although the dynamometer is not accurate enough, but as students practice test weight and qualitative experiment is very good.
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