中超控股(002471.SZ):控股孫公司取得2項發明專利證書
格隆匯12月14日丨中超控股(002471.SZ)公佈,近日,公司控股孫公司江蘇中超航宇精鑄科技有限公司(簡稱“江蘇精鑄”)收到中華人民共和國國家知識產權局頒發的《發明專利證書》,分別為一種複雜薄壁高温合金鑄件補焊性能評價方法、含缺陷試樣的製備及疲勞裂紋擴展真實路徑還原方法。
一種複雜薄壁高温合金鑄件補焊性能評價方法,發明採用基於複雜薄壁高温合金鑄件廣泛存在的大面積薄壁和變截面結構特徵,抽象出共性的薄板狀、變截面台階狀特徵的鑄件,進行補焊性能評價;有效克服了現有補焊機理研究嚴重脱離工程應用的弊端,對工程鑄件補焊修復實踐具有非常高的指導作用;採用機加打孔模擬鑄造缺陷,規避了實際鑄造缺陷出現位置難以控制的問題,有利於揭示共性規律;而且通過不同補焊次數鑄件的力學性能測試與組織分析研究,可以獲得不同牌號高温合金材料的補焊工藝性以及補焊次數限制,對航空航天飛行器各類複雜薄壁高温合金鑄件驗收標準制定具有很強的參考價值。
含缺陷試樣的製備及疲勞裂紋擴展真實路徑還原方法,發明基於凝固基本原理,通過對棒狀鑄件的局部結構進行熱結設計,製備含不同缺陷組態的高温合金棒狀鑄件。採用高能量高分辨的同步輻射技術穿透高温合金薄片試樣,獲得疲勞裂紋擴展路徑,再通過圖像三維疊加,還原出高温合金試棒中疲勞裂紋真實擴展路徑,克服了以往採用掃描電鏡方法只能觀察試樣表面的弊端。基於微積分的理念,通過試棒切片分步檢測,也較好的規避了同步輻射在高温合金中穿透厚度薄的侷限性,充分發揮其分辨率高的技術優勢,使含缺陷高温合金疲勞裂紋擴展真實路徑成為可能,為含缺陷高温合金鑄件疲勞性能精準預測提供基礎。
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