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塑料管材铣槽机SCG
塑料管材铣槽机SCG

塑料管材铣槽机SCG

型号: SL-MT 710

管径范围: 63-710毫米

最大试样长度: 1500毫米

缺口长度: 50至720毫米

最大加工深度: 20毫米

样品的最小壁厚: 5毫米

进给速度: 140至940毫米/分钟

电源供应: 220 V,50 Hz,2 kVA。

标准: ISO 13479、GB/T 18476

GB/T 18476 铣槽机是用于流体输送用塑料管材耐慢速裂纹增长试验方法的试样切口加工设备。该设备自动化程度高、切削精度精确、设计人性化,便于操作人员安全使用。
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产品详情 塑料管材铣槽机SCG

特点


1)试样采用气动升降机构固定,采用多点支撑系统固定试件,保证了切割刀与管材的平行度,以及缺口深度的优良重复性。

2)切割深度根据操作者输入的管径、壁厚自动计算。

3)每次切割完成后,管子可电动旋转90进行下一次切割,正反两个方向均可旋转,便于检查每个缺口。

4)集成监控系统跟踪铣刀执行的总加工长度。

5)带有触摸屏的用户友好的人机界面(HMI)可以精确控制铣刀的位置和运行状态。

6)系统支持记录和查看最新的测试记录和数据。

7)X轴和Y轴均由高精度直线导轨和精密研磨滚珠丝杠驱动,确保卓越的切割精度和评估慢裂纹扩展阻力的可靠测试数据。


应用领域: 塑料管制造商、第三方检测中心和研究机构。


常见问题解答


一、标准和范围


Q1:慢裂纹扩展(SCG)缺口测试基于哪个标准?
它主要基于ISO 13479《流体输送用聚烯烃管抗裂纹扩展性能的测定缺口管缓慢裂纹扩展试验方法(缺口试验)》,相应的中国国家标准为GB/T 18476-2019。

Q2:哪些管材适合这项测试?
适用于壁厚大于5mm的聚烯烃管材,用于评价在长期静水应力下的抗缓慢裂纹扩展能力。


二、设备原则和关键要求


Q3:铣槽机在SCG测试中的作用是什么?

铣槽机是试样制备的核心设备,用于在管道外表面精密加工符合标准要求的纵向缺口(切口),缺口深度、角度、形状直接影响后续静压试验结果的有效性。

Ⅳ:STARLINK-TEST铣槽机上的90电动旋转功能有什么作用?

标准要求在一根管材上沿圆周均匀加工 4 个纵向切口。90° 电动旋转功能可在一次装夹后依次完成全部切口,避免反复装夹带来的定位误差;同时支持正反转,便于操作人员观察每个切口的加工状态。可提高工作效率。

Q5:X/Y轴使用直线导轨和滚珠丝杠的意义是什么?

高精度直线导轨结合磨削滚珠丝杠保证进给过程中的定位精度和运动稳定性,从而保证缺口深度和几何形状的加工精度。由于缺口尺寸偏差直接影响SCG测试数据的有效性,传动精度是设备选择的关键因素。


三、试样制备和切口加工


Q6:缺口深度是如何确定的?它是固定值吗?

它不是一个固定的值。切口深度必须根据管道直径和壁厚计算,以确保切口根部的剩余壁厚符合标准附件中规定的限制(例如,对于SDR 11和250毫米外径的PE管道,剩余壁厚具有定义的限制)。星链仪器铣槽机支持在输入管道直径、壁厚时自动计算切割深度,有效减少手动错误。

Q7:缺口加工后,如何进行测试?

带四个纵向缺口的管材试样按GB/T 6111(ISO 1167)进行端封,浸入80C水浴中进行静压试验,并记录失效时间,失效时间表征了管材抗缓慢裂纹扩展的能力。


四。结果解释和设备选择


Q8:更长的失效时间是否意味着更好的管道质量?

在相同的试验条件(温度、压力、缺口尺寸)下,较长的失效时间表示较好的抗缓慢裂纹扩展能力。但不同SDR或不同直径的管道不能直接跨类型比较;应按照标准的分级要求进行综合判断。

Q9:为什么铣床的精度直接决定了测试结果的可信度?

缓慢裂纹扩展从缺口尖端开始萌生和扩展,缺口深度、角度、尖端半径、表面质量都影响裂纹萌生时间和扩展速率,如果缺口加工不精确,测试数据会表现出明显的分散,甚至可能导致错误的结论,因此选择高精度、高重复性的铣槽机是保证SCG测试结果可靠性的前提。

Q10:Starlink-test铣槽机能累计铣削的总长度吗?

Starlink-test铣槽机软件具有累计记录铣削的总长度的功能。当铣削长度达到100米时,提示检查刀具磨损情况。



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