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　　關于設計不銹鋼鑄造結構的三大注意事項(中英文)

　　在設計不銹鋼鑄造的基本結構單元及其參數選定時，通常應注意：

　　When designing the basic structural unit of stainless steel casting and selecting its parameters, attention should be paid to:

　　(1)為防止灰鑄鐵件產生白口，除從工藝上采取措施外，必須使其壁厚不能過薄(有些資料指出，壁厚在15mm以上時，用金屬型鑄造鑄件的轉角處都必須采用圓角，對于鋁合金、鎂合金金屬型鑄造鑄件的鑄造圓角不應小于3-4m，對于鑄鐵、鑄鋼、銅合金金屬型鑄造件的鑄造圓角可參見表1.1-32選取;

　　(2)由于金屬型和芯無讓性，為便于取出鑄件和抽出型，金屬型鑄造鑄件的鑄造斜度應比砂型鑄造件的適當大一些，一般應大30%-50%，應該指出：鑄造斜度大小除與合金種類、壁的高度有關外，還與鑄件表面的位置有關，凡在鑄件冷卻收縮時與金屬型表面有脫離傾向的鑄件表面可設計較小的斜度，而在鑄件收縮時趨向于壓緊在金屬型上的鑄件表面應給予較大的斜度，各種合金的不銹鋼鑄造的鑄造斜度;

　　(1) In order to prevent the gray iron castings from producing white holes, in addition to taking measures from the process, the wall thickness must not be too thin (some data point out that when the wall thickness is more than 15mm, the corner of the casting with metal mold casting must adopt rounded corners. For aluminum alloy and magnesium alloy metal mold casting, the casting rounded corners should not be less than 3-4m, for cast iron, cast steel, cast steel, cast iron, cast iron, cast iron, cast iron, cast iron, cast iron, cast iron, cast iron, cast iron, cast iron, cast iron, cast iron The casting fillet of copper alloy metal mold casting can be selected according to table 1.1-32

　　( 2) Because of the non yielding of metal mold and core, the casting inclination of metal mold casting should be larger than that of sand mold casting, generally 30% - 50%. It should be pointed out that the casting inclination is not only related to the type of alloy and the height of the wall, but also related to the position of the casting surface, The casting surface which tends to separate from the surface of the metal mold during the cooling shrinkage can be designed with a smaller slope, while the casting surface which tends to press on the surface of the metal mold during the casting shrinkage should be given a larger slope, and the casting slope of stainless steel casting with various alloys should be the same;

　　(3)由于金屬型散熱快，因此不銹鋼鑄造的最小壁厚應比砂型鑄造鑄件的要大一些，各種鑄造合金、不同大小的鑄造最小壁厚;

　　(4)鑄件內壁和內肋的厚度一般應取相連外壁厚度的0.6-0.7，否則由于內壁(肋)冷得慢，在鑄件收縮時易在內外壁交接處產生裂紋。

　　(3) Because of the rapid heat dissipation of metal mold, the minimum wall thickness of stainless steel casting should be larger than that of sand mold casting

　　( 4) Generally, the thickness of the inner wall and the inner rib of the casting should be 0.6-0.7 of the thickness of the connecting outer wall. Otherwise, due to the slow cooling of the inner wall (rib), cracks are easy to occur at the junction of the inner wall and the outer wall when the casting shrinks.