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工件為脫蠟鑄件, 照片中的黑點為微縮孔. 組織為回火(低碳)麻田散鉄.
Below: Re-post from a Germany website. Lath Martensite. Work of a real pro ! Compared to this, mine are amateur works.
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工件為脫蠟鑄件, 照片中的黑點為微縮孔. 組織為回火(低碳)麻田散鉄.
Below: Re-post from a Germany website. Lath Martensite. Work of a real pro ! Compared to this, mine are amateur works.
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