og视讯注册铸造无论是扁锭还是园锭在生产中经常会出现气孔和疏松缺陷问题，气孔和疏松如同孪生姐妹，常常相伴为生，给铝加工带来许多麻烦。og视讯注册铸造组织中存在圆形孔洞称为气孔。它是金属液体在冷却期间和凝固过程中，析出的气体存留在铸锭中形成的气泡缺陷。疏松是在og视讯注册铸造组织在凝固的过程中，由于og视讯注册在液态和凝固态的过程中,体积在收缩得不到很好的补充而产生出分散孔洞。气孔形成的主要因素：在溶解中的熔体的气体处于饱和状态，溶体中存在大量非金属夹渣物，气体在铸造的过程中上浮速度慢，则气泡就会停留在铸锭中产生气孔。
Stainless steel casting slab ingot or garden ingot in production often appear porosity defect and loose, porosity and loose like twin sisters, often accompanied by a living, bring a lot of trouble to aluminum processing. Stainless steel casting organization exists in the circular holes called pores. It is during the cooling and solidification process of liquid metal, the separation of gas remaining in the ingot casting defect formation of bubbles. Osteoporosis is in stainless steel casting organization in the process of solidification, as a result of stainless steel in liquid and solid in the process of coagulation, shrinking volume is not very good supplement and produce scattered holes. Porosity formation: the main factors in the gases dissolved in the melt in saturated state, the solution of a large number of non-metallic slag content, gas in the process of casting to rise slowly, the bubbles will remain the appearance of porosity in ingot casting.
在分析疏松的原因有几种情况：
1.熔体过热。2.熔体中气体含量过高。3铸造温度过低。4.泠却强度小.铸造速度过快。5.漏斗供流不均匀。6.烘炉不彻底.停炉时间过长。7.工具及精炼气体.溶剂等潮湿或不彻底。8.高镁合金覆盖不好。
og视讯注册铸造气孔及疏松是最为常见的缺陷之一，og视讯注册熔炼与铸造技术(工艺规程)产生；都是围绕气孔和疏松缺陷所制定出来的。如何解决气孔和疏松缺陷问题？
采取几项措施：
1.是控制化学成分杂质含量(减少非金属夹杂物)2.是固体料投放改为液体料投放(缩短熔炼时间)3.是加强精炼除气4.是将原来小园锭规格改为大园锭(以降低铸造速度，改变过度带尺寸)结果避免损失。
气孔的产生原因：
1.熔炉大修或者中修.长期停炉后干燥不彻底。2.原材料潮湿.有油污.水份。3.润滑油质量不好。4.熔体在炉中过热。5.工具末彻底干燥。6.燃气水分过大。7.熔炼的时间过长。
疏松一般分为两种：一种是收缩间产生的疏松，一种是末去除溶体气体形成的疏松。疏松的形成主要因素与熔体的气体含量与铸锭成形时过度带的尺寸.形状以及结构有关。
从上述案例看，虽然事件已过去整整三十多年，但是对于大家铝加工探索与发展提供了非常宝贵的数据和借鉴。
小结：
加强成分杂质的控制，有效减少非金属夹渣物的增多。
.采用液体供料，缩小了金属在溶炉停留时间，使溶炉内的气体在不饱和的作用下得到释放和分解。
og视讯注册铸造温度采用上限。
降低铸造速度改变液穴过渡带结构，让剩余的气体有足够的上浮空间。
行之有效的除气精炼。
熔铸工艺技术的制定不是一成不变，在特殊的情况下，果断采用预案，以防产品质量缺陷的发生。
1. Strengthen the composition control of impurity, reduce non-metallic slag content increasing.
2. The liquid feeding, reduce the time spent in metal bath furnace, make the gas inside the bath furnace under the action of unsaturated release and decomposition.
3. Adopt stainless steel casting temperature limit.
4. Reduce the casting speed changing fluid hole transition zone structure, make the rest of the gas enough to rise space.
5. Effective degassing refining.
6. Set of electroslag casting technology is not a constant, in special cases, the decisive adopts the plan, to prevent the occurrence of product quality defects.
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