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保证工艺品弹簧使用不受影响要进行试件试样
文章来源:http://www.sdzbthc.com/ 发布时间:2022-05-10 浏览次数:
制作工艺品弹簧试样时,要注意排除一些影响疲劳强度的异常因素。影响弹簧疲劳强度试验的因素有两个:一是内部因素,如化学成分、金相组织等;另一种是外部因素,如表面状态、形状和尺寸、温度和周围介质等,基于材料的固有特性。以疲劳强度(内部因素)为依据,同时考虑外部因素。
When making handicraft spring samples, we should pay attention to eliminate some abnormal factors affecting fatigue strength. There are two factors affecting the fatigue strength test of spring: one is internal factors, such as chemical composition, metallographic structure and so on; The other is external factors, such as surface state, shape and size, temperature and surrounding medium, based on the inherent characteristics of the material. Based on fatigue strength (internal factors) and considering external factors.
因此,在测试中,应尽可能排除外界因素的影响。在第一次测试中,可以根据使用条件制作样品或直接从产品中提取样品。第二、三型式试验时,应按具体要求取样。
Therefore, in the test, the influence of external factors should be eliminated as far as possible. In the first test, samples can be made according to the service conditions or directly extracted from the product. During the second and third type tests, samples shall be taken according to specific requirements.
弹簧材料试片尺寸如何调整?弹簧的尺寸总是不同程度的,因此即使变形量相同,它们之间的应力和疲劳强度也不完全相同。为了正确反映试样的疲劳强度,应在减小尺寸误差的基础上提高尺寸测量精度。样本量的测量精度应大于0.5%。当材料尺寸小于2mm时,其精度应为0.01mm。样品尺寸的0.5%,如果比例为0.01mm,则精度为0.01mm。
How to adjust the size of spring material test piece? The size of the spring is always different, so even if the deformation is the same, the stress and fatigue strength between them are not exactly the same. In order to correctly reflect the fatigue strength of the sample, the dimensional measurement accuracy should be improved on the basis of reducing the dimensional error. The measurement accuracy of sample size shall be greater than 0.5%. When the material size is less than 2mm, its accuracy shall be 0.01mm. 0.5% of the sample size, if the proportion is 0.01mm, the accuracy is 0.01mm.
测量圆形截面尺寸(如外径D2、弹簧线径d)时,应测量同一截面上相互垂直的两个直径,取其平均值作为直径尺寸。根据弹簧剪应力的计算公式:可见,为了反映大的剪应力,应测量弹簧DD的大值。
When measuring the size of circular section (such as outer diameter D2 and spring wire diameter d), measure the two diameters perpendicular to each other on the same section, and take the average value as the diameter size. According to the calculation formula of spring shear stress: it can be seen that in order to reflect the large shear stress, the large value of spring DD should be measured.
青岛工艺品弹簧厂
青岛工艺品弹簧厂厂家认为为确保弹簧受力后不产生偏载,应严格检查弹簧两端的平行度和整个弹簧的垂直度。为保证弹簧加载后各圈变形均匀,弹簧节距应均匀,弹簧圈椭圆度不宜过大。为便于试验结果对比,同批次的弹簧数量和结构应尽量保持一致。
Qingdao handicraft Spring Factory believes that in order to ensure that the spring will not produce eccentric load after being stressed, the parallelism of both ends of the spring and the perpendicularity of the whole spring should be strictly checked. In order to ensure uniform deformation of each coil after spring loading, the spring pitch should be uniform, and the ovality of the spring coil should not be too large. In order to facilitate the comparison of test results, the number and structure of springs in the same batch shall be consistent as far as possible.
此外,不同的加工和热处理条件对疲劳强度的影响也不同,因此同批次的试样应同时加工和热处理。同一批次的样品应采用自动卷簧机一次加工,尽量减少人工加工。经静压或强压处理调整弹簧的自由高度时,有时会因负荷过大而使疲劳强度降低,因此不应通过静压或强压处理调整弹簧试样的自由高度。
In addition, different processing and heat treatment conditions have different effects on fatigue strength, so the samples of the same batch should be processed and heat treated at the same time. The samples of the same batch shall be processed at one time by automatic spring coiling machine to minimize manual processing. When the free height of the spring is adjusted by static pressure or strong pressure treatment, sometimes the fatigue strength will be reduced due to excessive load. Therefore, the free height of the spring sample should not be adjusted by static pressure or strong pressure treatment.
保证工艺品弹簧使用不受影响要进行试件试样的相关内容就讲解到这里吧,如果您还想了解更为详细的内容就关注我们的网站www.sdzbthc.com,来找客服人员咨询吧。
To ensure that the use of handicraft springs will not be affected, the relevant contents of test pieces and samples will be explained here. If you want to know more details, please pay attention to our website www.sdzbthc.com COM, come to the customer service staff for advice.