祥鑫科技(002965.SZ):既有熱成型工藝的零部件,也有冷衝壓工藝的零部件
格隆匯5月6日丨祥鑫科技(002965.SZ)於2023年5月4日-5月5日召開電話會議,問答環節中,就“熱成型的產品和冷衝壓的產品區別是什麼?請問公司是兩種工藝都有嗎?”,公司回覆稱,冷衝壓件是在常温下,利用安裝在壓力機上的模具對材料施加壓力,使其產生分離或塑性變形,從而獲得一定形狀、尺寸和性能的零件。這種工藝稱之為冷衝壓工藝。熱衝壓件加工時,得先把原材料毛坯加熱到奧氏體温度區間900度以上,然後再快速送到液壓機上,在鋼板具有延展性時進行衝壓加工。成型後模具需要合模保壓一段時間,這樣一方面能更好的控制衝壓件的形狀,另一方面是利用模具中設置的冷卻裝備對鋼板進行淬火,使衝壓件形成均勻的馬氏體組織,獲得良好的尺寸精度和機械性能。公司既有熱成型工藝的零部件,也有冷衝壓工藝的零部件。
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