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聚烯烴管材銑槽機SCG
聚烯烴管材銑槽機SCG

聚烯烴管材銑槽機SCG

型號: SL-MT 710

管徑範圍: 63-710毫米

最大樣本長度: 1500毫米

缺口長度: 50至720毫米

最大加工深度: 20毫米

樣品的最小壁厚: 5毫米

進給速度: 140至940毫米/分鐘

電源供應: 220 V,50 Hz,2 kVA。

標準: ISO 13479、GB/T 18476

GB/T 18476銑槽機是用于流體輸送用塑膠管材耐慢速裂紋增長試驗方法的試樣切口加工設備。該設備自動化程度高、切削精度精確、設計人性化,便於操作人員安全使用。
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產品詳情 聚烯烴管材銑槽機SCG

特點


1)試樣採用氣動升降機構固定,採用多點支撐系統固定試件,保證了切割刀與管材的平行度,以及缺口深度的優良重複性。

2)切割深度根據操作者輸入的管徑、壁厚自動計算。

3)每次切割完成後,管子可電動旋轉90進行下一次切割,正反兩個方向均可旋轉,便於檢查每個缺口。

4)集成監控系統跟蹤銑刀執行的總加工長度。

5)帶有觸摸屏的用戶友好的人機界面(HMI)可以精確控制銑刀的位置和運行狀態。

6)系統支持記錄和查看最新的測試記錄和數據。

7)X軸和Y軸均由高精度直線導軌和精密研磨滾珠絲槓驅動,確保卓越的切割精度和評估慢裂紋擴展阻力的可靠測試數據。


應用領域: 塑料管制造商、測試實驗室和研究機構。


常見問題解答


一、標準和範圍

Q1:慢裂紋擴展(SCG)缺口測試基於哪個標準?

它主要基於ISO 13479《流體輸送用聚烯烴管抗裂紋擴展性能的測定缺口管緩慢裂紋擴展試驗方法(缺口試驗)》,相應的中國國家標準爲GB/T 18476-2019。

Q2:哪些管材適合這項測試?

適用於壁厚大於5mm的聚烯烴管,用於評價在長期靜水應力下的抗緩慢裂紋擴展能力。


二、設備原則和關鍵要求


Q3:銑槽機在SCG測試中的作用是什麼?

銑槽機是試樣製備的核心設備,用於在管道外表面精密加工符合標準要求的縱向缺口(切口),缺口深度、角度、形狀直接影響後續靜壓試驗結果的有效性。

Q4:STARLINK-TEST銑槽機的 90° 電動旋轉功能作用是什麼?

標準要求在一根管材上沿圓周均勻加工4個縱向切口。90°電動旋轉功能可在一次裝夾後依次完成全部切口,避免反覆裝夾帶來的定位誤差;同時支持正反轉,便於操作人員觀察每個切口的加工狀態。可提高工作效率。

Q5:X/Y軸使用直線導軌和滾珠絲槓的意義是什麼?

高精度直線導軌結合磨削滾珠絲槓保證進給過程中的定位精度和運動穩定性,從而保證缺口深度和幾何形狀的加工精度。由於缺口尺寸偏差直接影響SCG測試數據的有效性,傳動精度是設備選擇的關鍵因素。


三、試樣製備和切口加工

Q6:缺口深度是如何確定的?它是固定值嗎?

它不是一個固定的值。切口深度必須根據管道直徑和壁厚計算,以確保切口根部的剩餘壁厚符合標準附件中規定的限制(例如,對於SDR 11和250毫米外徑的PE管道,剩餘壁厚具有定義的限制)。星鏈試驗銑牀支持在輸入管道直徑壁厚時自動計算切割深度,有效減少手動錯誤。

Q7:缺口加工後,如何進行測試?

帶四個縱向缺口的管材試樣按GB/T 6111(ISO 1167)進行端封,浸入80C水浴中進行靜壓試驗,並記錄失效時間,失效時間表徵了管材抗緩慢裂紋擴展的能力。


四。結果解釋和設備選擇

Q8:更長的失效時間是否意味着更好的管道質量?

在相同的試驗條件(溫度、壓力、缺口尺寸)下,較長的失效時間表示較好的抗緩慢裂紋擴展能力。但不同SDR或不同直徑的管道不能直接跨類型比較;應按照標準的分級要求進行綜合判斷。

Q9:爲什麼銑牀的精度直接決定了測試結果的可信度?

緩慢裂紋擴展從缺口尖端開始萌生和擴展,缺口深度、角度、尖端半徑、表面質量都影響裂紋萌生時間和擴展速率,如果缺口加工不精確,測試數據會表現出明顯的分散,甚至可能導致錯誤的結論,因此選擇高精度、高重複性的銑牀是保證SCG測試結果可靠性的前提。

Q10:STARLINK-TEST銑槽機可以記錄總銑削長度?

星鏈試驗銑牀軟件具有累計記錄銑削總長度的功能。當累計銑削長度達到100米時,發出提示以檢查刀具磨損情況。


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