Friday, September 28, 2007

鑄造 www.tool-tool.com

Bewise Inc. www.tool-tool.com Reference source from the internet.
鑄造技術也可以應用在藝術雕塑上。

鑄造技術也可以應用在藝術雕塑上。

鑄造是指將某些金屬(例如等)以高溫加熱,使其溫度高於本身熔點熔化後,倒入特定形狀的鑄模,待其冷卻凝固成形,為金屬主要的加工方式。

而鑄模的材料可以是沙、金屬甚至陶瓷。因應不同要求,使用的方法也會有所不同。

[編輯] 鑄造種類

  • 砂模鑄造法(Sand Casting)
利用砂作為鑄模材料,但並非所有砂均可用以鑄造,而不同成份的砂可再細分為濕砂模鑄造法(Green Sand Mold)、表面乾砂模鑄造法(Dry Sand Mold)等等。
好處是成本較低,因為鑄模所使用的沙可重複使用;缺點是鑄模製作需時,而且不能不能被重複使用,因為要取得成品,必須破壞鑄模。
  • 金屬模鑄造法(Die Casting)
利用熔點較原料高的金屬製作鑄模。其中細分為重力鑄造法、低壓鑄造法和高壓鑄造法。
受制於鑄模的熔點,可被鑄造的金屬也有所限制。
這方法可以為外膜鑄造法和固體鑄造法。
先以蠟複製所需要鑄造的物件,然後浸入含CERAMIC的池中並待乾,使以蠟製的複製品覆上一層CERAMIC外膜,一直重複步驟直到外膜足以支持鑄造過程(約1/4寸到1/8寸),然後熔解模中的蠟,並抽離鑄模。其後鑄模需要多次加以高溫,增強硬度後方可用以鑄造。
此方法具有良好的準確性,更可用作高熔點金屬(如鈦)的鑄造。但由於CERAMIC價格頗高,而且製作需要多次加熱和複雜,故成本頗為昂貴。


BW Bewise Inc. Willy Chen willy@tool-tool.com bw@tool-tool.com www.tool-tool.com skype:willy_chen_bw mobile:0937-618-190 Head &Administration Office No.13,Shiang Shang 2nd St., West Chiu Taichung,Taiwan 40356 TEL:+886 4 24710048 / FAX:+886 4 2471 4839 N.Branch 5F,No.460,Fu Shin North Rd.,Taipei,Taiwan S.Branch No.24,Sec.1,Chia Pu East Rd.,Taipao City,Chiayi Hsien,Taiwan

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Bewise Inc. www.tool-tool.com

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