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鋁合金壓鑄怎么取得好的造型效果?

刮刮乐2000 www.yfrmbf.com.cn 來源:    發布時間:2019-12-06 13:15:55    點擊:

隨著社會的進步,工業的發展,山東鋁合金壓鑄應用范圍越來越廣,我們前期也有介紹過鋁合金壓鑄的操作過程的介紹,也會在過程中遇到一些問題,你要怎么解決呢!那么今天就由濟南市宏捷模具有限公司帶大家一起了解一下吧!
  With the progress of society and the development of industry, Shandong Aluminum alloy die casting is more and more widely used. In the early stage, we also introduced the operation process of aluminum alloy die casting, and we will encounter some problems in the process. How can you solve them! So today, Jinan Hongjie mould Co., Ltd. will take you to know about it!
  一、壓鑄鋁件如何取得好的造型效果?
  I. how to achieve good modeling effect for die-casting aluminum parts?
 ?。?)對于壓鑄鋁件中局部很厚的部位,在其上設置冒口要十分慎重,以防在原有熱節的基礎上再形成工藝熱節,在局部很厚的部位,配用冷鐵的效果往往要好于單用冒口的效果。
  (1) for the parts with thick local area in die casting aluminum, it is necessary to be very careful to set risers on them so as to prevent the process hot spot from forming again on the basis of the original hot spot. In the parts with thick local area, the effect of using cold iron is often better than that of using only risers.
 ?。?)對于網格類和隔板較多的壓鑄鋁件,要避免產生澆不足的缺陷,除了要將內澆口對準網格或隔板的走向外,鑄件本身的排氣也是十分重要的工藝要素。
  (2) for the die-casting aluminum parts with more grids and diaphragms, in order to avoid the defect of insufficient pouring, in addition to aligning the inner gate with the grid or diaphragms, the exhaust of the casting itself is also a very important process element.
 ?。?)砂型鑄造時,對于尺寸過大而無適用砂箱的鑄件以及對于不止一個面有較復雜腔室的鑄件,采用組型和組芯造型的方法能取得較好的效果。
  (3) in sand casting, for the castings with too large size and no suitable sand box, and for the castings with more than one complex cavity, the method of group mold and core mold can achieve better results.
 ?。?)組芯造型時,應把握好以下四方面,砂芯放置的穩定性;砂芯定位的準確性;組芯造型的可操作性;組芯與其他工藝要素的互容性。組型造型時,應在組型砂塊外進行圍砂,以防產生漏箱。
  (4) during core molding, the following four aspects should be grasped: the stability of core placement; the accuracy of core positioning; the operability of core molding; the compatibility of core and other process elements. During the formation molding, sand enclosure shall be carried out outside the formation sand block to prevent leakage.
山東鋁合金壓鑄
 ?。?)對于通身壁厚較薄的環形或框形鑄件,當澆注系統設置在鑄件部位時,直澆口與橫澆道圈之間的澆道做成折線形式,以防收縮時產生拉應力使鑄件產生變形與裂紋。
  (5) for ring or frame castings with thin wall thickness, when the pouring system is set in the center of the casting, the sprue between the straight sprue and the transverse sprue ring is made into a fold line form to prevent the casting from deformation and crack due to tensile stress during shrinkage.
  二、壓鑄鋁件要如何防止金屬液在澆注過程中氧化?
  2. How to prevent the liquid metal from oxidation during the pouring process?
 ?。?)調整鐵液含碳量和碳當量,適當提高球化溫度并加強孕育處理,降低鐵液黏度,改進鐵液流動性;
  (1) adjust the carbon content and carbon equivalent of molten iron, increase the spheroidizing temperature and strengthen the inoculation treatment, reduce the viscosity and improve the fluidity of molten iron;
 ?。?)壓鑄鋁件在保障球化前提下減少加鎂量以降低球墨鑄鐵殘留鎂量;
  (2) on the premise of ensuring spheroidization, reduce the amount of magnesium added to the die casting aluminum to reduce the amount of residual magnesium in nodular cast iron;
 ?。?)用優良爐料熔煉球墨鑄鐵,降低原鐵液含硫量及氣體、夾雜物含量;
  (3) smelting nodular cast iron with excellent furnace charge, reducing the sulfur content of the original molten iron, gas and inclusion content;
 ?。?)采用擋渣效果好的澆包,澆注前鐵液在澆包中停留足夠時間,使熔渣和夾雜物充分上??;
  (4) the ladle with good slag retaining effect shall be used. Before pouring, the molten iron shall stay in the ladle for enough time to make the slag and inclusions fully float;
 ?。?)采用?;ば云杖哿逗徒階⒚競轄?,防止金屬液氧化;
  (5) smelting and pouring magnesium alloy in protective atmosphere to prevent the liquid metal from oxidation;
 ?。?)壓鑄鋁件澆注位置和澆注系統設置應保障金屬液迅速平穩充滿型腔,縮短充型流程;采用真空吸鑄;
  (6) the pouring position and pouring system of die-casting aluminum parts should be set to ensure that the molten metal can fill the cavity quickly and stably, shorten the filling process, and adopt vacuum suction casting;
 ?。?)調整合金成分以提高其流動性,適當提高澆注溫度和澆注速度,壓鑄鋁件防止金屬液在澆注過程中氧化,改進型砂和涂料成分以防止型壁與金屬液發生化學反應,包內靜置足夠時間并加強擋渣,金屬型鑄造時適當提高型溫;
  (7) adjust the alloy composition to improve its fluidity, properly raise the pouring temperature and pouring speed, prevent the molten metal from oxidization during pouring, improve the composition of molding sand and coating to prevent the chemical reaction between the mold wall and the molten metal, allow the ladle to stand for enough time and strengthen the slag retaining, properly raise the mold temperature during the casting of the metal mold;
 ?。?)易氧化合金鋼在還原性或中性氣氛中澆注;
  (8) easily oxidized alloy steel is poured in reducing or neutral atmosphere;
 ?。?)在澆注系統中,設置過濾網和集渣包;
  (9) in the pouring system, a filter screen and a slag collecting bag are arranged;
  以上就是由濟南市宏捷模具有限公司壓鑄鋁件如何取得好的造型效果及壓鑄鋁件要如何防止金屬液在澆注過程中氧化的介紹,希望可以幫到你!想要了解更多請點擊官網//www.yfrmbf.com.cn
  The above is from Jinan Hongjie Mold Co., Ltd. how to achieve good modeling effect and how to prevent the oxidation of molten metal in the pouring process. I hope it can help you! For more information, please click //www.yfrmbf.com.cn
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