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造成山东铝合金压铸件脱皮主要因素??

来源:六合历史开奖记录    发布时间:2019-12-11 10:39:30    点击:

今天我们就跟着济南市宏捷模具有限公司一起来了解一下山东铝合金压铸脱皮因素剖析。
  Today, we will follow Jinan Hongjie mould Co., Ltd. to understand the factors of Shandong Aluminum Alloy Die Casting peeling.
  铝合金压铸件脱皮因素剖析
  Analysis of peeling factors of aluminum alloy die casting
  1冷隔的宏观形状
  1 macroscopic shape of cold insulation
  冷隔的宏观外形是指金属液体在压铸时由于所受压力的转变以致充型时不连续或不安稳。当有些模具温度偏低时,以致先进入型腔的少量液体碰着型壁顿时固结成表皮层,该表皮层会很快被水汽和油烟氧化成极薄的金属层,而后进入的金属液体在其表面掩饰固结后组成该层界面。由于该层界面有氧化气象,与基体接洽强度较低,在脱模拉力、外部气体膨胀力和碰到低温、喷丸和低压等外力的后果下,表层简略脱开起皮。
六合历史开奖记录_山东铝合金压铸
  The macroscopical shape of the cold shut refers to the discontinuity or instability of the filling of the metal liquid due to the pressure change during the die casting. When the temperature of some molds is low, a small amount of liquid entering the mold cavity first meets the mold wall and immediately solidifies into a skin layer. The skin layer will soon be oxidized into a very thin metal layer by water vapor and oil smoke, and then the metal liquid entering the mold will mask and solidify on its surface to form the interface of the layer. Due to the oxidation of the interface between the layer and the substrate, the strength of the interface is relatively low. Under the effects of the pulling force of demoulding, the expansion force of the external gas and the external forces such as low temperature, shot peening and low pressure, the surface simply peels off.
  2皮下存在微气孔
  There are micro pores under the skin
  有些脱皮是皮下气缩孔在外力后果下释放的结果。如果铸件间接压铸进去后,表面没有明显的脱皮,但在压铸件喷丸后才表示进去,抛丸的强度越大或时候越长,脱皮气象就会越严格,这是由于压铸件表面或皮下有微气孔和气泡等惹起的脱皮毛病。
  Some desquamation is the result of the release of subcutaneous gas pores under the effect of external forces. If there is no obvious peeling on the surface of the casting after indirect die-casting, but it is indicated after shot peening of the casting. The greater the strength of shot peening or the longer the time is, the more strict the peeling weather will be. This is due to the peeling disease caused by micro pores and bubbles on the surface or under the skin of the casting.
  3有些表面精密性不良
  3. Poor surface precision
  有些脱皮是由于有些铸件表面精密性不可或者啮合性不佳,在外力后果下精密层毁坏惹起的。铸件在经由过程抛丸处置和低压干净后呈现半掉落气象是由于表面精密层在2次压力打击下,吸附力更单薄的表层受到毁坏,而后翻边或掉落。
  Some desquamation is caused by the damage of the precision layer caused by the external force because of the inaccuracy or poor meshing of the surface of some castings. After shot blasting and low-pressure cleaning, the casting shows a semi drop phenomenon because the surface layer with the thinnest adsorption force is damaged and then flanged or dropped under two pressure blows.
  以上就是由济南市宏捷模具有限公司对山东铝合金压铸脱皮因素剖析的因素的介绍!想了解更多产品信息,欢迎访问官网
  The above is the introduction of Shandong Aluminum Alloy Die Casting peeling factor analysis by Jinan Hongjie Die Co., Ltd! For more product information, please visit
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